70" Linear Wideview
Direct Vent Gas Fireplace
Model: VWDV70
Installation and Operating
Instructions

WARNINGS
If the information in these instructions
are not followed exactly, a fireor explosion may result causing
property damage, personal injury or
loss of life.
– Do not store or use gasoline or otherflammable vapors and liquids in the vicinityof this or any other appliance.
– WHAT TO DO IF YOU SMELL GAS• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier froma neighbor's phone. Follow the gas
supplier's instructions.
• If you cannot reach your gas supplier, callthe fire department.
– Installation and service must be performed
by a qualified installer, service agency or
the gas supplier.
WARNING: Improper installation, adjustment,
alteration, services or maintenance can cause
injury or property damage. Refer to this manual.
For assistance or additional information
consult a qualified installer, service agency or
the gas supplier.

This appliance may be installed in an aftermarket*,permanently located, manufactured home (USA
only) or mobile home, where not prohibited by local
codes.
This appliance is only for use with the type(s) of
gas indicated on the rating plate unless a certified
kit is used.
*Aftermarket: Completion of sale, not for purpose of resale, fromthe manufacturer.

3735
VWDV70 cover

WARNINGDUE TO HIGH TEMPERATURES, THE APPLIANCESHOULD BE LOCATED OUT OF TRAFFIC AND
AWAY FROM FURNITURE AND DRAPERIES.
CHILDREN AND ADULTS SHOULD BE ALERTEDTO THE HAZARDS OF HIGH SURFACETEMPERATURE AND SHOULD STAY AWAY TO
AVOID BURNS OR CLOTHING IGNITION.
YOUNG CHILDREN SHOULD BE SUPERVISEDWHEN THEY ARE IN THE SAME ROOM AS THE
APPLIANCE.
CLOTHING OR OTHER FLAMMABLE MATERIALSHOULD NOT BE PLACED ON OR NEAR THE
APPLIANCE.
Keep the room area clear and freefrom combustible materials, gasoline,
and other flammable vapors andliquids.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
20303735 8/11 Rev. 1

CONTENTS

VWDV70 Series Gas Fireplace
Thank you and congratulations on your purchase of a
Vermont Castings Fireplace.

PLEASE READ THE INSTALLATION AND OPERATION INSTRUCTIONS BEFORE USING THE APPLIANCE!
IMPORTANT: Read all instructions and warnings carefully before starting installation.
Failure to follow these instructions may result in a possible fire hazard and will void the warranty.
Important Safety Information......................................3

Check Gas Pressure..................................................26

Code Approval..............................................................4

Electrical Installation.................................................26
Electrical Wiring.....................................................26
Junction Box Wiring...............................................27
Command Center Wall Installation.........................27
SCS Wiring Diagram..............................................28

Product Features..........................................................5
Product Specifications.............................................5
High Elevations........................................................5
Gas Pressures.........................................................5
Gas Specifications & Orifice Size............................5
Before You Start.......................................................5
Firebox Framing.......................................................5
Fireplace & Framing Dimensions.............................6
Standoffs..................................................................6
Fireplace Location....................................................7
Clearances....................................................................8
Secure Fireplace to Floor or Framing........................9
Finishing Material.........................................................9
Noncombustible Facing Installation.........................10
Noncombustible Requirements.............................. 11
Venting Installation.....................................................12
Installation Precautions..........................................12
Installation Planning...............................................13
Horizontal Termination...........................................13
General Venting - Termination Location.................14
Termination Clearances.........................................15
Vent Graph.............................................................15
Vertical Sidewall Installation...................................16
Vertical/Horizontal Termination Configurations......17
Below Grade Installation........................................18
Vertical Through-the-Roof
Applications & Installation....................................19
Installation for Vertical Termination........................20
Flex Vent Installation..............................................22
Fireplace Installation..................................................24
Check Gas Type....................................................24
Install Gas Piping to Fireplace/Burner System......25



Glass Frame Removal................................................29
Bulb Replacement......................................................29
Glass & Stone Placement..........................................30
Glass & Stone Placement......................................30
Accessory Log Installation.....................................31
Operating Instructions...............................................35
Operating Instructions............................................36
To Turn Off Gas......................................................36
Signature Command System Operation..................37
Touch Screen Remote Control Operation..............40
Fuel Conversion...........................................................46
Cleaning and Maintenance........................................49
Burner, Pilot and Control Compartment.................49
Pilot Flame.............................................................49
Burner Flame.........................................................49
Vent System...........................................................50
Glass Door.............................................................50
Stones....................................................................50
Troubleshooting.........................................................51
Replacement Parts.....................................................52
Firebox Components..............................................52
Signature Command System.................................53
Venting Components..............................................55
Massachusetts Residents Only................................58
Warranty......................................................................59
Efficiencies.................................................................60

20303735

IMPORTANT SAFETY INFORMATIONVWDV70 Series Gas Fireplace
OWNER

Please leave these instructions with the appliance.

Please retain these instructions for future reference.

WARNINGINSTALLER• Read this owner’s manual carefully and completely before trying to assemble, operate,••or service this fireplace.
Any change to this fireplace or its controls can be dangerous.
Improper installation or use of this fireplace can cause serious injury or death fromfire, burns, explosions, electrical shock and carbon monoxide poisoning.

This fireplace is a vented product. This fireplace must be
properly installed by a qualified service person. The glass
door must be properly seated and sealed. If this unit is notproperly installed by a qualified service person with glass
door properly seated and sealed, combustion leakage
can occur.
CARBON MONOXIDE POISONING: Early signs of carbon
monoxide poisoning are similar to the flu with headaches,dizziness and/or nausea. If you have these signs, the fireplace may not have been installed properly. Get fresh air
at once! Have the fireplace inspected and serviced by aqualified service person. Some people are more affectedby carbon monoxide than others. These include pregnant
women, people with heart or lung disease or anemia,
those under the influence of alcohol, and those at highaltitudes.
Propane/LP gas and natural gas are both odorless. An
odor-making agent is added to each of these gases. The
odor helps you detect a gas leak. However, the odor added
to these gases can fade. Gas may be present even though
no odor exists.
Make certain you read and understand all warnings. Keepthis manual for reference. It is your guide to safe and proper
operation of this fireplace.
1. This appliance is only for use with the type of gas
indicated on the rating plate. This appliance is notconvertible for use with other gases unless a certified
kit is used.
2. For propane/LP fireplace, do not place propane/LP
supply tank(s) inside any structure. Locate propane/
LP supply tank(s) outdoors. To prevent performance
problems, do not use propane/LP fuel tank of less than
100 lbs. capacity.
3. If you smell gas

•
•
•
•

shut off gas supply.
do not try to light any appliance.
do not touch any electrical switch; do not use any
phone in your building .
immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

20303735

4.		 Never install the fireplace••

in a recreational vehicle
where curtains, furniture, clothing, or other flammable objects are less than 42" from the front, top,or sides of the fireplace• in high traffic areas• in windy or drafty areas
5. This fireplace reaches high temperatures. Keep children and adults away from hot surfaces to avoid burns
or clothing ignition. Fireplace will remain hot for a timeafter shutdown. Allow surfaces to cool before touching.
6. Carefully supervise young children when they are in
the room with fireplace.
7. Do not modify fireplace under any circumstances. Anyparts removed for servicing must be replaced prior tooperating fireplace.
8. Turn fireplace off and let cool before servicing, installing, or repairing. Only a qualified service person should
install, service, or repair the fireplace. Have burnersystem inspected annually by a qualified service
person.
9. You must keep control compartments, burners, andcirculating air passages clean. More frequent cleaning may be needed due to excessive lint and dust.
Turn off the gas valve and pilot light before cleaning
fireplace.
10. Have venting system inspected annually by a qualified service person. If needed, have venting systemcleaned or repaired. Refer to Cleaning and Maintenance, Page 42.
11. Keep the area around your fireplace clear of combustible materials, gasoline, and other flammable vapor
and liquids. Do not run fireplace where these are usedor stored. Do not place items such as clothing or decorations on or around fireplace.
12. Do not use this fireplace to cook food or burn paper orother objects.
13. Never place anything on top of fireplace.

IMPORTANT SAFETY INFORMATIONVWDV70 Series Gas Fireplace

IMPORTANT:PLEASE READ THE FOLLOWINGCAREFULLY
It is normal for fireplaces fabricated of steel
to give off some expansion and/or contraction
noises during the start up or cool down cycle.
Similar noises are found with your furnace heatexchanger or car engine.
IMPORTANT:PLEASE READ THE FOLLOWINGCAREFULLY
It is not unusual for gas fireplace to give offsome odor the first time it is burned. This is dueto the manufacturing process.
Please ensure that your room is wellventilated during burn off — open all
windows.
It is recommended that you burn your fireplace
for at least ten (10) hours the first time you use
it. Place the fan switch in the “OFF” position
during this time.

WARNING

14. Do not use any solid fuels (wood, coal, paper, cardboard, etc.) in this fireplace. Use only the gas typeindicated on rating plate.
15. This appliance, when installed, must be electricallygrounded in accordance with local codes or in theabsence of local codes, with the National ElectricalCode, ANSI/NFPA 70, or the Canadian Electrical Code,CSA C22.1.
16. Do not obstruct the flow of combustion and ventilation
air in any way. Provide adequate clearances aroundair openings into the combustion chamber along withadequate accessibility clearance for servicing andproper operation.
17. When the appliance is installed directly on carpeting,tile or other combustible material other than wood flooring, you must set appliance on a metal or wood panelor hearth pad extending the full width and depth of theappliance.
18. Do not use fireplace if any part has been exposed toor has been under water. Immediately call a qualified
service technician to inspect the appliance and replace
any part of the control system and any gas control which
as been submerged in water.
19. Do not operate fireplace if any log is broken.
20. Do not use a blower insert, heat exchanger insert, or
any other accessory not approved for use with thisfireplace.
21. Do not operate the fireplace with glass door removed,
cracked, or broken.

Never connect unit to private (non-utility)
gas wells. This gas is commonly known
as wellhead gas.

! WARNING
HOT GLASS WILLCAUSE BURNS.
DO NOT TOUCH GLASSUNTIL COOLED.
NEVER ALLOW CHILDRENTO TOUCH GLASS.

Code Approval
Direct Vent type appliances draw all combustion air from outside of the dwelling through thevent pipe.
These appliances have been tested by CSA and found to comply with the established standards for
DIRECT VENT GAS FIREPLACE HEATERS in the USA and Canada as follows:
LISTED VENTED GAS FIREPLACE HEATERTESTED TO: ANSI Z21.88-2009 / CSA 2.33-2009 STANDARDSA manufactured home (USA only) or mobile home OEM installation must conform with the Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280, or when such a standard
is not applicable, the Standard for Manufactured Home Installations, ANSI/NCSBCS A225.1, orStandard for Gas Equipped Recreational Vehicles and Mobile Housing, CSA Z240.4.
20303735

product featuresVWDV70 Series Gas Fireplace

product SPECIFICATIONS• This appliance has been certified for use with either•••

natural or propane gas. See appropriate data plates.
This appliance is not for use with solid fuels.
The appliance is approved for bedroom or bedsitting
room installations.
The appliance must be installed in accordance with local
codes if any. If none exist use the current installation
code. ANSI Z223.1/NFPA 54 in the USA, CSA B149 in
Canada.

• This appliance is mobile home approved.
• The appliance must be properly connected to aventing system.

• The appliance is not approved for closet or recessed
installations.

Gas Specifications & ORIFICE SIZE
			

Max.
Min.
			
Input
Input		Orifice Sizes
Model
Fuel Btu/hr Btu/hr
Left
Middle	RightVWDV70 Nat. 51,000 32,500
#44
#43
#45
VWDV70 LP 43,000 32,000 1.25 mm 1.20 mm #56

Before You Start
Read this homeowner manual thoroughly and follow all
instructions carefully. Inspect all contents for shipping
damage and immediately inform your dealer if any damage
is found. Do not install any unit with damaged, incomplete,or substitute parts. Check your packing list to verify that
all listed parts have been received. You should have thefollowing:• Fireplace (Firebox and Burner System)• Reflective Decorative Glass • Conversion Kit• Stone Set• Wall Switch Kit
ITEMS REQUIRED FOR INSTALLATION

Control Board
Gas Control
Valve

FP2938A/C Module

Figure 1 VWDV70 Fireplace Features

Side View

FP2938HIGH ELEVATIONSVWDV controls

•
•
•
•
•
•
•
•
•
•
•

Phillips Screwdriver• Framing Materials
Hammer• Wall Finishing Materials
Saw and/or saber saw • Level
Measuring Tape
• Pliers
Electric Drill and Bits • Square
Pipe Wrench• Tee Joint
Caulking Material (noncombustible)
Fireplace Surround Material (noncombustible)
Piping Complying with Local Codes
Pipe Sealant Approved for use with Propane/LPG(Resistant to sulfur compounds)
Noncombustible finishing material or dura-rock*

Input ratings are shown in BTU per hour and are certified without deration for elevations up to 4,500 feet
(1,370 m) above sea level.

* Only used if desired to cover painted face other than using tiles ormarble. If tiles or marble are used around the face, the noncombustible
material is not needed.

For elevations above 4,500 feet (1,370 m) in USA,installation must be in accordance with the current
ANSI Z223.1/NFPA 54 and/or local codes having
jurisdiction.

firebox framing

In Canada, please consult provincial and/or local
authorities having jurisdiction for installation at elevations above 4,500 feet (1,370 m).

GAS pressures
		
Inlet Minimum
Inlet Maximum
Manifold Pressure20303735

Natural4.5” w.c.
10.5” w.c.
3.5” w.c.

Propane (LP)11.0” w.c.
13.0” w.c.
10.0” w.c.

Firebox framing can be built before or after the applianceis set in place. Refer to Figure 2 for fireplace and framing
dimensions. The framing headers may rest on the top of
the firebox standoffs. Do not bring headers below top of
standoffs. NOTE: When planning your framing and installation, keep in mind that both the gas line and electricity
should come in on the right side of the firebox (as you arefacing the front of the fireplace).
The firebox may be installed directly on a combustible floor
or raised on a platform of an appropriate height. Whenthe firebox is installed directly on carpeting, tile, or othercombustible material, other than wood flooring, the firebox
shall be installed on a metal or wood panel extending thefull width and depth of the enclosure.
FIREPLACE & FRAMING DIMENSIONSVWDV70 Series Gas Fireplace
RoughOpeningDepth

456QE” (1151 mm)

10(6 ”
236 "(276 mm)(594 mm)
2356 ”(587 mm)9156 ” (2315 mm) Rough Opening Width

RoughOpening
Height66QE”(167 mm)

4856M"(1226 mm)
4856O”(1232 mm)

4056O”(1029 mm)316 ”(803 mm)
176M”(451 mm)

16M”(45 mm)1456O”(368 mm)

6956O" (1765 mm)
726M” (1848 mm)

176 "(440 mm)66QE”(167 mm)

2356 ”(587 mm)816 ” (2067 mm)
906 ” (2302 mm)

906QE” (2294 mm)

12

7

6M”

(3

24

5

m

m

)

906QE” (2294 mm)(1

6
62 3(62 ”mm)

Unfold standoffs into upright position and fasten into placeusing #8 screws provided, three (3) screws per standoff.
Figure 3

Figure 2 Fireplace and Framing Dimensions
3735
VWDV70 dims

Figure 3

Do not fill spaces around firebox withinsulation or other materials. This could
cause a fire.

WARNINGWARNING

FP2931

Unit framing is to be rectangular front toFP2931 to do so will cause fire andback. Failure
unfoldstandoffs
damageto property.
20303735

PRE-INSTALLATION INFORMATIONVWDV70 Series Gas Fireplace

Fireplace Location
Plan for the installation of your appliance. This includes determining where the unit is to beinstalled, the vent configuration to be used, framing and finishing details, and whether any optional
accessories (i.e. blower, wall switch, or remote control) are desired. Consult your local buildingcode agency to ensure compliance with local codes, including permits and inspections.
The following factors should be taken into consideration:• Clearance to side-wall, ceiling, woodwork, and windows. Minimum clearances to combustibles
•
•
•
•
•
•
•

must be maintained.
This fireplace may be installed along a wall, across a corner, or use an exterior chase. See
Figure 4 for suggested locations.
Location should be out of high traffic areas and away from furniture and draperies due toheat from appliance.
Never obstruct the front opening of the fireplace.
Do not install in the vicinity where gasoline or other flammable liquids may be stored.
Vent pipe routing. See Venting section found in this manual for allowable venting configurations.
These units can be installed in a bedroom. Refer to the National Fuel Gas Code ANSI Z233.1/
NFPA 54 — (current edition), the Uniform Mechanical Code — (current edition), and Local
Building Codes for specific installation requirements.
These units can be installed in a bathroom.
A Flat on Wall
B Cross Corner
C Island**E
A
B
D Room Divider*Y
E Flat on Wall Corner*
F Chase Installation
XC
Y 4" Minimum
Y

D

B
F

Figure 4 Possible Fireplace Locations

LU584-2
Locating unit** Island (C) and room divider (D) installation is possible as longas the horizontal portion of vent system (X) does not exceed
20'. Refer to Installing Horizontal Termination Configuration on
Page 13.
* When you install your fireplace in (D) room divider or (E) flaton wall corner positions (Y), a minimum of 6" clearance must
be maintained from perpendicular wall and front of fireplace.

NOTE

COLD CLIMATE INSULATION
If you live in a cold climate, seal all cracks around your appliance, andwherever cold air could enter the room, with noncombustible material.
It is especially important to insulate the outside chase cavity between
the studs and under the floor on which the appliance rests, if the floor
is above ground level.

20303735

clearances

VWDV70 Series Gas Fireplace

WARNING

Clearances to combustibles
Follow these instructions carefully to ensure safe installation. Failure tofollow instructions exactly can create a fire hazard.
The appliance cannot be installed on a carpet, tile or other combustible
material other than wood flooring. If installed on carpet or vinyl flooring,
the appliance shall be installed on a metal, wood or noncombustible
material panel extending full width and depth of the appliance.

Stud

Wall

12“ (305 mm)
Max. Depth

Noncombustible
Material (Supplied)Standoff12” (305 mm)

30” (762 mm)
Min. to Ceiling

12”(305 mm)

12” Min.
From Opening

Top of Fireplace
Opening

956O”(241 mm)

FP2929Side View

FP2928Figure 5 Ceiling and Sidewall Clearances

FP2422mantel clearances
FP2930

NOTE: Refer to mantel installation instructions
on Page 11.
FP2928clg sidewall clear

1”
Side ofFireplace Opening

156O”
356O”

256O”
3”

Top View

5”

456O”

45°

6”

Figure 6 Mantel clearances

FP2423mantel leg

20303735

SECURE FIREPLACE to floor or framing

VWDV70 Series Gas Fireplace

Fireplace may be installed on top of framing or platform constructed of combustible
materials which do not protrude beyond
the face.

note

note

The fireplace must be secured to the floor and/or to framing studs as shown in Figure 7. Use
two (2) wood screws or masonry/ concrete screws to secure fireplace to the floor. Use four (4)screws to attach fireplace to framing. The side nailing flanges are 1/2" or 5/8" to accommodate
different wall thickness.

Never install combustible materials overfront face of fireplace or in noncombustible
zone shown below.

Noncombustible
Material (Supplied)

Framing Members

Noncombustible
Material Supplied
Must be used tocreate Four (4) Sides

Nailing Flanges

Noncombustible
Material

Figure 7 Secure Fireplace to Framing Studs

FP2932Finishing Material

Only noncombustible materials (i.e. brick, tile, slate, steel,or other materials with a UL fire rating of Zero) may be used
to cover up to the glass opening. It is permissible to bring
combustible wall board to the top of the standoffs on the
top and the sides of the unit. A 300°F minimum adhesive
may be used to attach facing materials to noncombustible
surface.

20303735

note

FP2932
NOTE: Any wiring must be done prior to final
finishing tosecure fireplace
avoid costly reconstruction.

If the unit is to be installed into a bare painted
wall, without finishing materials (i.e. brick,tile, slate, marble, etc.), a Vermont Casting
accessory face MUST be used (VWDV70CSS,VWDV70BT, VWDV70IA, etc.). The supplied
noncombustible board shown in Figure 6
MUST be used for ALL installations.

NONCOMBUSTIBLE REQUIREMENTSVWDV70 Series Gas Fireplace
NONCOMBUSTIBLE FACING INSTALLATIONCAUTION: The noncombustible board supplied with thisunit can be damaged if dropped or struck. Handle withcare.
1. Using drywall screws secure noncombustible board toframing and top nailing strip. Attach every 6" (152 mm).
Figures 8 & 9IMPORTANT: To avoid cracking the board, pre-drill
holes prior to securing to unit/framing.
2. Wipe any debris or dust from the noncombustible board
and drywall.
3. It is highly recommended to prime the facing using aquality primer prior to taping and mudding. This will
ensure proper adhesion of both the tape and mud. The
supplied board is very porous.

4. Tape the seams using a mesh type tape.
5. Mud seams as normal. We recommend using a productcalled Durabond high strength compound for the firstcoat. This product can be purchased at any hardware
store. Follow manufacturer's recommendations forcuring the mud.
NOTE: Depending upon the final finishing method, use aminimum rated 300 degree sealant, drywall compoundor thin set to seal the side and top joints.
6. Prime wall for a second time for proper adhesion ofpaint.

10”(254 mm)33”(838 mm)Header2356QE”(608 mm)

Framing

9356O” (2375 mm)
Outline of
Face

656M”

506QE”(159 mm)(1284 mm)3(6 ” (98 mm)
176QE”(446 mm)76M” (197 mm)

656M”(159 mm)

FP2939Figure 8

FP2939noncombustible material
1020303735

NONCOMBUSTIBLE REQUIREMENTSVWDV70 Series Gas Fireplace#8 x 3/4" Self-tapping
Screws (supplied)2” (51 mm)from edge

9”9”(229 mm)
Spacing

156O” (38 mm)from edge

FP2940

NOTE: Use this illustration as a guide when attaching thenoncombustible boards to the face of the fireplace. Use
the #8 x 3/4" self-tapping screws provided.

Figure 9

Metal Framing

FP2940noncmb facing screws

Maintain 16Z\x"(419 mm) to
Combustible Framing

If a mantel is to be installed
and the attachment points
fall upon the noncombustible surface above theglass frame opening, a
suitable structure must be
added in order to support
the weight of the mantel. A
framework of metal studs
as shown in Figure 10 issuggested. The two (2)front stand-offs on top of
the unit will need to be
removed.
20303735

FP2941Figure 10

FP2941
metal framing

11

Venting INSTALLATION INFORMATIONWARNINGVWDV70 Series Gas Fireplace

Read all instructions completely and thoroughly before attempting
installation. Failure to do so could result in serious injury, property damage
or loss of life. Operation of improperly installed and maintained venting
system could result in serious injury, property damage or loss of life.

INSTALLATION PRECAUTIONS
Consult local building codes before beginning the
installation. The installer must make sure to select theproper vent system for installation. The approved 5 x 8
venting components are Simpson Duravent and Selkirk
products listed on Page 49. UL1777 flexible venting is also
approved for use on these models. Before installing ventkit, the installer must read this fireplace manual and vent
kit instructions.

**3”(76 mm)*1”(25 mm)Only a qualified installer/service person should install venting system. The installer must follow these safety rules:• Wear gloves and safety glasses for protection.
• Use extreme caution when using ladders or when36" (914 mm)
Vertical Rise
Required Before
Horizontal Run

on rooftops.
• Be aware of electrical wiring locations inwalls and ceilings.
The following actions will void the warranty on your venting system:84" (2134 mm)
Minimum, Baseof Fireplace toCenterline of Vent
Pipe

• Installation of any damaged venting•

NOTICE

Failure to follow these instructions willvoid the warranty.

WARNING•

This fireplace must be vented to theoutside. The venting system must NEVER
be attached to a chimney serving aseparate solid fuel burning appliance.
Each gas appliance must use a separate
vent system. Do not use common ventsystems.

12

Figure 11 Combustible Clearances for Vent Pipe

FP2933* A minimum 1" clearance to combustibles permitted all around flue at
outside wall.
** A minimum of 3" clearance
FP2424to all sides is required along horizontal
and vertical length. Vent pipe clearances

WARNING•

component.
Unauthorized modification of theventing system.
Installation of any component partnot manufactured or approved by
MHSC.
Installation other than permitted bythese instructions.

Horizontal and vertical sections of this ventsystem require a minimum of 3" clearance
to combustibles on all sides.

20303735

VentING installation

There are two basic types of direct-vent installation:• Horizontal Termination• Vertical Termination

WARNINGinstallation planning

VWDV70 Series Gas Fireplace
Never run the vent pipe level down. This may
cause excessive temperatures which could
cause a fire.

It is important to select the proper length of vent pipe forthe type of termination you choose. It is also important to note the wall thickness.

for horizontal termination
Select the amount of vertical rise desired. All horizontal run of venting must have 1/4" rise forevery 12" of run towards the termination below 7Z\x feet of vertical rise from the floor of the fireplace. With 7Z\x feet or more vertical rise from the floor of the fireplace, the horizontal run may
run level. NEVER run vent piping down.
You may use up to three 90° elbows in this vent configuration. Refer to Vertical/Horizontal Termination Configurations on Page 15.

For vertical termination
Measure the distance from the fireplace floor to the ceiling. Add the ceiling thickness, the verticalrise in an attic or second story, and allow for sufficient vent height above the roof line.
NOTE: You may use two 45° elbows in place of a 90° elbow. You must follow rise to run ratios
when using 45° elbows. The appliance is approved for use with three 90° elbows maximum or
a combination of 90° and 45° elbows up to a maximum of 270°.
For two-story applications, firestops are required at each floor level. If an offset is needed in theattic, additional pipe and elbows will be required.
You may use a chase with a vent termination with exposed pipe on the exterior of the house.
Refer to Installing A Vent System in an Outside Chase below. If pipe is enclosed in chase, it is
not exposed.
It is very important that the venting system maintain its balance between the combustion air
intake and the flue gas exhaust. Certain limitations apply to vent configurations and must be
strictly followed.

Installing a vent system in an outside chase

NOTICE

When installing in a chase, you should insulate the chase as you would theoutside walls of your home. This is especially important in cold climates.
Insulation should be considered a combustible material. Maintain proper
clearances to all combustible materials.

NOTICE

Treatment of firestops and construction of the chase may vary frombuilding type to building type. These instructions are not substitutes forthe requirements of local building codes. You must follow all local building
codes.

WARNINGA chase is a vertical boxlike structure built to enclose venting that runs along the outside of abuilding. A chase is required for such venting.

Always maintain minimum clearances around vent systems. The minimum
clearances to combustibles for horizontal and vertical vent pipe are 1" at thetop, sides and bottom of the vent system. Do not pack the open air spaces withinsulation or other materials. This could cause high temperatures and may present
a fire hazard.

20303735

13

venting installation

VWDV70 Series Gas Fireplace
General Venting Information - Termination Location
INSIDECORNER DETAIL
G
V

H

A

D

L

V

E
C
B

V
F

Figure 12 Termination Locations

B
Fixed
Closed

Ope
rable

V
B

B

V

B

V VENT TERMINATION

B

V

J

A

CFM145aV

Fixed
ClosedOperable

X AIR SUPPLY INLET

X

M
I

V

K

X

AREA WHERE TERMINAL IS NOT PERMITTED		Canadian Installations1	US Installations2
CFM145a

A = Clearance above grade, veranda, porch,12” (30 cm)DV Termin Location12” (30 cm)
5/01/01 Rev. 12/05/01
deck, or balconysta
B = Clearance to window or door that may be6” (15 cm) for appliances6” (15 cm) for appliances		
opened< 10,000BTU/h (3kW), 12” (30 cm)< 10,000 BTU/h (3kW), 9”					
for appliances > 10,000 Btuh (3kW) and(23 cm) for appliances > 10,000
			< 100,000 BTU/h (30kW), 36” (91 cm)
Btuh (3kW) and < 50,000 BTU/h			
for appliances > 100,000 BTU/h (30kW)(15kW), 12” (30 cm) for				
appliances > 50,000 BTU/h(15kW)
C = Clearance to permanently closed window12” (305 mm) recommended to12” (305 mm) recommended to			prevent window condensation
prevent window condensation
D = Vertical clearance to ventilated soffit located							above the terminal within a horizontal
18” (458 mm)
18” (458 mm)			
distance of 2’ (610mm) from the center							line of the terminal
E = Clearance to unventilated soffit12” (305 mm)
12” (305 mm)
F = Clearance to outside corner
see next page
see next page
G = Clearance to inside corner (see next page)
see next page
see next page
H = Clearance to each inside of center line
3’ (91 cm) within a height of 15’ (5 m)
3’ (91 cm) within a height of 15’
		extended above meter/regulator assembly
above the meter/regulator assembly(5 m) above the meter/regulator
				
assy
I = Clearance to service regulator vent outlet
3’ (91 cm)
3’ (91 cm)
J = Clearance to nonmechanical air supply inlet 6” (15 cm) for appliances < 10,000
6” (15 cm) for appliances		
to building or the combustion air inlet to any BTU/h (3kW), 12” (30 cm) for< 10,000 BTU/h (3kW), 9”		other appliances
appliances > 10,000 BTU/h (3kW) and(23 cm) for appliances > 10,000
			< 100,000 Btuh (30kW), 36” (91 cm)
BTU/h (3kW) and < 50,000 BTU/h			
for appliances > 100,000 BTU/h (30kW)(15kW), 12” (30 cm) for				
appliances > 50,000 BTU/h(15kW)
K = Clearance to a mechanical air supply inlet
6’ (1.83 m)
3’ (91 cm) above if within 10'					(3 m) horizontally
L = Clearance above paved sidewalk or paved 7’ (2.13 m)†		 7’ (2.13 m)†		driveway located on public property
M = Clearance under veranda, porch, deck or
12” (30 cm)		 12” (30cm)
		
balcony				1 In accordance with the current CSA-B149 Installation Codes
2 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel
Gas Codes† A vent shall not terminate directly above a sidewalk or paved
driveway which is located between two single family 		dwellings and serves both dwellings
 only permitted if veranda, porch, deck or balcony is fully open on aminimum 2 sides beneath the floor:

14

NOTE: 1. Local codes or regulations may require different 				 clearances.
2. The special venting system used on Direct Vent Fireplaces		 are certified as part of the appliance, with clearances		 tested and approved by the listing agency.
3. MHSC assumes no responsibility for the improper 				 performance of the appliance when the venting system		 does not meet these requirements.

20303735

venting installation

VWDV70 Series Gas Fireplace

Termination Clearances
Termination clearances for buildings with combustible and noncombustible exteriors.
Alcove Applications*
Inside Corner
Outside CornerG=
Combustible
6" (152 mm)

G

F=
Combustible
6" (152 mm)
Noncombustible2" (51 mm)

V

Noncombustible2" (51 mm)

V

F

Balcony with perpendicular side wall

Balcony with no side wall

D

C

C
V

E
O

E = Min. 6” (152 mm) for
non-vinyl sidewalls
Min. 12” (305 mm) for
vinyl sidewalls
O = 8’ (2.4 m) Min.

M

V

V

Figure 13 Termination
Clearances

No.
of Caps		 DMin.		 CMax.
1
3’ (914 mm) 2 x DActual
2
6’ (1.8 m)
1 x DActual3
9’ (2.7 m)
2/3 x DActual
412’ (3.7 m)
1/2 x DActual

M

P
M=
Combustible &Noncombustible12" (305 mm)

Combustible &Noncombustible
M = 24" (610 mm)
P = 20” (508 mm)

DMin. = # of Termination caps x 3
CMax. = (2 / # termination caps) x DActual

584-15*NOTE: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions specified for vinyl or
non-vinyl siding and soffits. 1. There must be a 3’ (914 mm) minimum between termination caps. 2. All mechanical air intakes within 10’ (1 m) of atermination cap must be a minimum of 3’ (914 mm) below the termination cap. 3. All gravity air intakes within 3’ (914 mm) of a termination cap must
be a minimum of 1’ (305 mm) below the termination cap.

Dimensions in Feet

The Vent Graph should be read in conjunction with thefollowing vent installation instructions to determine therelationship between the vertical and horizontal dimensionsof the vent system.
1. Determine the height of the center of the horizontal ventpipe exiting through the outer wall. Using this dimension on the Sidewall Vent Graph below, locate the pointintersecting with the slanted graph line.
2. From the point of this intersection, draw a vertical line
to the bottom of the graph.
3. Select the indicated dimension, and position the fireplace in accordance with same.
Example: If the vertical dimension from the base of thefireplace is 11' (3.4 m) the horizontal run to the face ofthe outer wall must not exceed 16' (4.9 m).
Sidewall Vent Graph showing the relationship between
vertical and horizontal dimensions for a Direct Vent fluesystem.

Vent run must not
be in shaded areaeg: A

Vertical Dimension From the Base of Unit to theCenter of the Horizontal Vent Pipe

How To Use The Vent Graph

40
38
36
34
32
30
28
26
24
22
20
18
84" (2134 mm)
From Floor to 16
14
Center
12
10
8
6
4
2

2 4 6 8 10 12 14 16 18 20

Horizontal dimension from the finished outside
wall to the center of the pipe on the fireplace
Figure 14 Rear Wall Venting Graph

20303735

FP2132
sidewall vent graph15

venting installation

VWDV70 Series Gas Fireplace
Vertical Sidewall Installation
Step 1

Locate vent opening on the wall. It may be necessary to
first position the fireplace and measure to obtain hole location. Depending on whether the wall is combustible ornoncombustible, cut opening to size. Figure 15 (For combustible walls first frame in opening.)
Combustible Walls: Cut a 10Z\x”H x 10Z\x”W (267 x 267mm) hole through the exterior wall and frame as shown.
Figure 15
Noncombustible Walls: Hole opening must be 8Z\x” (216mm) in diameter.

X

X
Figure 16 Vertical Height
Requirement

Vent Opening for Combustible Walls

FP1181

10Z\x”(267 mm) Min.

Step 5

Measure the horizontal length requirement figuring a 1Z\v”(32 mm) overlap, i.e. from the elbow to the outside wallcap. Figure 17
Always install horizontal venting on a level
plane.

10Z\x”(267 mm)
Min.

Fireplace Hearth

Framing DetailX
Figure 17 Horizontal Length
Requirement

Opening for Noncombustible Wall
8Z\x”
(216 mm)

Fireplace Hearth
Figure 15 Locate vent opening on wall

X
FP2293

Step 2

Secure firestop to the inside frame, center in the 10Z\x” x
10Z\x” vent opening. VO584-100

Vent Opening
2/99 djt
Place fireplace into position. Measure the vertical height
Step 3(X) required from the base of the flue collars to the centerof the wall opening. Figure 16

Step 4Using appropriate length of pipe section(s) attach to fireplace with three (3) screws. Follow with the installation of
the elbow.

16

FP1182

Step 6

Use appropriate length of pipe sections - telescopic or
fixed - and install.
Sealing vent pipe and firestop gaps with high temperature sealant will restrict cold air being drawn inaround fireplace.

Step 7

Guide the vent terminations 5” and 8” collard into theirrespective vent pipes. Double check that the vent pipes
overlap the collars by a minimum 1Z\v” (32 mm). Secure
the termination to the wall with screws provided and caulk
around the wall plate to weatherproof. As an alternative toscrewing the termination directly to the wall, you may alsouse expanding plugs or an approved exterior construction
adhesive.
Support horizontal pipes every 36” (914mm) with metal pipe straps.
20303735

venting installation

VWDV70 Series Gas Fireplace
36"(914 mm)Max.

VERTICAL/Horizontal termination
configurations
Since it is very important that the venting system maintain its balance between the combustion air intake andthe flue gas exhaust, certain limitations as to vent configurations apply and must be strictly adhered to.

36"(914 mm)Max.

36”(914 mm)

The Vent Graph, showing the relationship between verticaland horizontal side wall venting, will help to determine thevarious dimensions allowable. Figure 14
NOTE: Horizontal and vertical sections of this vent system
require a minimum of 3" (76 mm) clearance to combustibles
on all sides.
When vent exits through foundations less than 20" below
outcrop, the termination must be flush up with outcropped
wall above.
It is best to locate the fireplace in such a way that minimizes
the number of offsets and horizontal vent length.
The horizontal vent run refers to the total length of ventpipe from the flue collar of the fireplace (or the top of theTransition Elbow) to the face of the finished outside wall.

In Figures 20 and 21 dimension A plus B must not begreater than 17' (5.2 m).
• For each 45° elbow installed in the horizontal run, thelength of the horizontal run MUST be reduced by 18"(457 mm). This does not apply if the 45° elbows are
installed on the vertical part of the vent system.
• The maximum number of elbow degrees in a system is270°. Figure 21• The maximum number of 90° elbows per side wall•

installation is three (3). Figure 18
A minimum of 36" (914 mm) is required before a 90°
elbow. If a 90° elbow is fitted directly after 36" (914 mm)
vertical section mounted to the top of the fireplace, themaximum horizontal vent run before the termination ora vertical rise is 36” (914 mm). Figure 19

FP1177

Figure 19 Maximum Horizontal Run with No Rise

Max 20"90° Elbow = 3’ Reduction
BA

3 x 90°
ElbowsMax 20"36" (914 mm)
Min.

10’

FP117610’(3 m)

Figure 18 Maximum Three (3) 90° Elbows Per Installation• If a 90° elbow is used in the horizontal vent run (level

height maintained) the horizontal vent length is reduced
by 36". Refer to Figures 20 and 21. This does not apply
if the 90° elbows are used to increase or redirect a vertical rise. Figure 20
Example: According to the vent graph (Page 15) the maximum horizontal vent length in a system with a 10' verticalrise is 17Z\x’ (5.3 m) and if a 90° elbow is required in thehorizontal vent it must be reduced to 14Z\x' (4.4 m).
20303735

FP1176max 90 bends

FP1177

Figure 20 max horizontal run
FP2934
Horizontal Run Reduction

FP2427
Horizontal run
reduction

17

venting installation

VWDV70 Series Gas Fireplace
Elbow 1 =Elbow 2 =Elbow 3 =Elbow 4 =Total Angular Variation =Example:

90°
45°
45°
90°
270°

7. Level the soil so as to maintain a 4" clearance below
snorkel. Figure 19
ScrewsFirestop1

Minimum
4" Clearance
Ground

1

2

2

3

3

4

Window
Well
Gravel36" (914 mm)
4MinimumDrain36" (914 mm)
Minimum

Foundation Wall
Figure 21 Maximum Elbow Usage

Below Grade Installations
FP1180

When it is not possible to meet the required vent terminal
bends
clearances of 12" above grade level,max
a snorkel
kit is recommended. It allows installation depth down to 7" (178 mm)
below grade level. The 7" (178 mm) is measured from thecenter of the horizontal vent pipe as it penetrates throughthe wall.

FP2134

If the foundation is recessed, use recess brackets (notsupplied) for securing lower portion of the snorkel. Fasten
bracketsFP2134
to wall first, then secure to snorkel with self drilling #8 xbelow
1/2" sheet
metal
screws. It will be necessary to
grade
installextend vent pipes out as far as the protruding wall face.
Figure 23

Ensure that sidewall venting clearances are observed.
If venting system is installed below ground, we recommend a window well with adequate and proper drainage
to be installed around the termination area.

SnorkelFoundation
RecessIf installing a snorkel, a minimum 36" (914 mm) verticalrise is necessary. The maximum horizontal run with the 36”(914 mm) vertical pipe is 36". This measurement is takenfrom the collar of the fireplace (or transition elbow) to theface of the exterior wall. See the Sidewall Venting Graphfor extended horizontal run if the vertical exceeds 12".

Wall Screws

Watertight Seal
Around Pipe

Sheet Metal
ScrewsFigure 23 Snorkel Installation, Recessed Foundation

WARNING

1. Establish vent hole through the wall.
2. Remove soil to a depth of approximately 16" (406 mm)
below base of snorkel. Install drain pipe. Install window
well (not supplied). Refill hole with 12" (305 mm) ofcoarse gravel leaving a clearance of approximately 4"(102 mm) below snorkel. Figure 22
3. Install vent system.
4. Ensure a watertight seal is made around the vent pipe
coming through the wall.
5. Apply high temperature sealant caulking (supplied)around the 5" and 8" snorkel collars.
6. Slide the snorkel into the vent pipes and secure to the
wall.
18

Figure 22 Below Grade Installation

FP1180FP1966• Do not backfill around snorkel.
snorkel•	A clearanceof at least 4" must be

maintained between the snorkel andthe soil.

20303735

venting installation

VWDV70 Series Gas Fireplacevertical (through-the-roof)
applications
This gas fireplace has been approved for,• Vertical installations up to 40' (12 m) in height. Up toa 10' (3 m) horizontal vent run can be installed within
the vent system using a maximum of two 90° elbows.
Figure 24

NOTE: Horizontal and vertical sections of this vent system
require a minimum 1" clearance to combustibles at the top,sides and bottom.

Elbow 1 =Elbow 2 =Elbow 3 =Elbow 4 =Total Angular Variation =Example:

90°
45°
45°
90°
270°

1
2
3
4

40' (12 m)
Maximum
Height12' (3.7 m)
Minimum
Height10' (3 m)
Maximum36" (914 mm)
Min.

36" (914 mm)
Min.
Support Straps
Every 3'Figure 25 Maximum Elbow Usage

1

FP11792
3

FP1183

4

Figure 24 Support Straps for Horizontal Runs

• Up to two 45° elbows may be used within the horizontal

run. For each 45° elbow used on the horizontal plane,
the maximum horizontal length must be reduced by 18"(450 mm).
FP1183

Example: Maximum horizontal
lengthmax heightNo elbows = 10’ (3 m)
1x45° elbows = 8.5’ (2.6 m)
2x45° elbows = 7’ (2.1 m)• A minimum of a 36" (914 mm) vertical rise is required.
• Two sets of 45°elbows offsets may be used within the•vertical sections. From 0 to a maximum of 8' (2.5 m)of vent pipe can be used between elbows. Figure 25
The maximum angular variation allowed in the system
is 270°. Figure 25

20303735

FP1179max bends

19

venting installation

VWDV70 Series Gas Fireplaceinstallation for vertical termination
1. Determine the route your vertical venting will take. If
ceiling joist, roof rafters or other framing will obstruct
the venting system, consider an offset. Refer to Figure
26 to avoid cutting load bearing members.
For optimal flame appearance on straight vertical runs of
10 feet (3 m) or higher, the two (2) restrictor sliding plates
on the inside roof of the firebox should be partially closed.
Use the following guidelines as a starting point:
Height of Venting	Restrictor Plate Setting
30' to 40' (9.1 to 12.2 m)
1/4 open
20' to 30' (6.1 to 9.1 m)
1/3 open
10' to 20'(3 to 6.1 m)
1/2 open
After initially setting the plate openings, replace glass door
and operate fireplace for at least 15 minutes to observe
the flames.
For natural gas, the average flame height should beapproximately 6" to 7" (152 to 178 mm).
For LP gas, the average flame height should be approximately 4" to 5" (102 to 127 mm).
If the flames are too tall, open plates slightly.
If the flames are too short, close plates slightly.
CAUTION: Allow fireplace to cool completely before touching or opening the glass door.

Roof Flashing

Wall Strap

45° Elbows

FP1669Ceiling Firestop
Figure 26 Offset with Wall Strap and 45° Elbows

FP1969offset w/ wallstrap

Nails• Runs may not incorporate elbows.
NOTE: Pay special attention to these installation instructions
for required clearances (air space) to combustibles when
passing through ceilings, walls, roofs, enclosures, attic
rafters, etc. Do not pack air spaces with insulation. Also
note maximum vertical rise of the venting system and any
maximum horizontal offset limitations. Offsets must fallwithin the parameters shown in Figures 25 and 26.
2. Set fireplace in desired location. Drop a line plumb downfrom the ceiling to the position of the flue exit. Mark thecenter point where the vent will penetrate the ceiling.
Drill a small locating hole a this point.
Drop a plumb line from the inside of the roof to the ceiling
locating hole in the ceiling. Mark the center point wherethe vent will penetrate the roof. Drill a small locating holeat this point.

Firestop
Figure 27 - If Area Above is a Room, Install Firestop
above Framed Hole as Shown

10

/"

1 2

101

/2"

FP1969firestop w room above

FP1970Nails

Firestop

Figure 28 - If Area Above is Not a Room, Install
Firestop above Framed Hole as Shown

20

FP1970
firestop no room

20303735

venting installation

VWDV70 Series Gas Fireplace

TERMINATION HEIGHTS FOR VENTS ABOVE FLAT OR
3. Cut a hole in the roof using the locating hole as a center
SLOPED ROOFS
point. (Cover any exposed open vent pipes before
cutting hole in roof). The 10Z\x"x10Z\x" (241 x 241 mm)
Horizontal Overhanghole must be measured on the horizontal. Actual length
may be larger depending on the pitch of the roof. There
must be a 1" minimum clearance from the vent pipe to
Vertical Wall
combustible materials. (Insulation should be considered
2 ft.
a combustible material).
2 ft. Min.
Min.
Lowest
4. Connect a section of pipe and extend up through the
Discharge
hole.
Opening
NOTE: If an offset is needed to avoid obstructions, you Terminationmust support the vent pipe every three (3) feet. Use wall Vent
straps for this purpose. Refer to Figure 24. Whenever
12H*possible, use 45° elbows instead of 90° elbows. TheX
Storm
45° elbow offers less restriction to the flow of the flue
Collargases and intake air.
FP1971
5. Place the flashing over the pipe section(s) extending Flashing
through the roof. Secure the base of the flashing to
the roof and framing with roofing nails. Be sure roofing
material overlaps the top edge of the flashing. There
1" Minimum
must be a 1" clearance from the vent pipe to combustible
Clearances tomaterials.
Combustibles
Concentric
6. Continue to add pipe sections until the height of the vent
Vent Pipecap meets the minimum building code requirements.
NOTE: You must increase vent height for steep roof
pitches. Nearby trees, adjoining roof lines, steep
Roof Pitch	H (feet)
Figure 29 pitched roofs, and other similar factors may cause
Flat
to 6/121.0
Minimum
Chimneypoor draft or down-drafting in high winds. Increasing
Clearance
Over
6/12
to
7/12
1.25
the vent height may solve this problem.
FP1971
Over
7/12 to 8/12
1.5
Min chimney
clearance
NOTE: If the vent pipe passes through any occupied
Over 8/12 to 9/12
2.0
areas above the first floor, including storage spaces
Over
9/12
to
10/12
2.5
and closets, you must enclose pipe. You may frame and
Over
10/12
to
11/12
3.25
sheetrock the enclosure with standard construction
Over 11/12 to 12/12
4.0
material. Make sure to meet the minimum allowable
clearances to combustibles. Do not fill any of the*H - Minimum height from roof tolowest discharge opening of ventrequired clearance spaces with insulation.

20303735

21

VWDV70 Series Gas Fireplace

FLEX VENT INSTALLATION

1. Flexible UL1777 listed venting may be used in any venting application where rigid direct ventcomponents can be used. All restrictions, clearances and allowances that pertain to therigid piping apply to the flexible venting. Flex kits may not be modiUL1777
fied. Flex kits may be added to the end of a vent run made of rigid ventFlex Vent
sections using pipe manufacturer's approved flex to pipe adapters.
This may occur only if doing so does not violate any of the venting
length, height, routing, horizontal to vertical ratio requirements
or clearance considerations detailed in this manual.
2. The flex adapter starter kit (DVFF8A/8) is used to attach
flex venting to the appliance starting collar. It includes 5"
inner and 8" outer adapter rings. Figure 30• The inner and outer adapter rings are required to start 1C\v" Flex-

NOTE

ible Pipe
all flex runs.
and Adapter• Never install damaged or torn flexible venting.
ScrewsOuter(3 places,• Over tightening clamps may rip, tear, or otherwise
equidistant justdamage flexible venting.
above gearclamp)• The adapter kit does not include individual pipe sec- DVFF8A/8
Inner Adapter
tions which may be purchased separately. (UL1777 Outer Adapter
listed type venting only.)
3. Start the flexible vent as follows:
Appliance
A. Installing the inner flex adapter and pipe. Figure 30
Starting Collar
1. Insert the long side of the 5" inner ring into
exhaust pipe, gently tap to seat into place, and secure withscrews.
2. Slide the small gear clamp over the inner flexible vent pipe,
and push out of the way.
3. Pull and extend the inner flexible vent.
Figure 30 4. Slide the inner vent onto the adapter collar, for a minimum Typical Appliance Connection
1C\v" overlap.
UL1777
5. Locate the clamp at approximately 3/4" from the flex end and tighten.
FP1972 Flex Vent
6. Secure the clamped inner section with three self-tapping screws, drilledappliance connection
equidistant, just above the clamp perimeter.
B. Installing the outer flex pipe. Figure 30
1. Firmly insert the 8" outer adapter ring into the outer appliance starting collar
and secure with screws.
2. Slide the large gear clamp over the outer flexible vent pipe, and push out
5° Radiusof the way.
3. Pull and extend the outer flexible vent.
FP1973
4. Slide the outer vent onto the appliance collar outer adapter for a minimum
Figure 31 1C\v" overlap.
Minimum Radius for Flex
5. Locate the clamp at approximately 3/4" from the flex end and tighten.
FP1973
Vent Section
6. Secure the clamped outer section with three self-tapping screws, drilledflex pipe bend
equidistant, just above the clamp perimeter.
C. Routing UL1777 flex pipe.
1. Always maintain the required clearance when routing the flex vent assembly.
2. Install firestop spacers, Figure 32, when penetrating ceiling, attic spaces, or walls.

22

Flex vent pipe spacers: Refer tomanufacturer’s specifications for correct
positioning of the spacer springs tomaintain proper distance between insideand outside pipe.
20303735

FLEX VENT INSTALLATIONVWDV70 Series Gas Fireplace

3. Do not allow the flexible vent to bend in radius tighter than 5°. Figure 31
4. Horizontal runs of flexible vent shall be supported at maximum 2 foot intervals; vertical runs,
five feet intervals. Metal strapping, properly secured, is an acceptable means to support
the flexible vent.
5. Flexible vent spacers are to be installed at intervals prescribed by the flexible vent manufacturer; and in such a way as to maintain concentric inner and outer vent spacing.
D. Attaching flexible venting to vertical termination assemblies.
1. When using Simpson pipe, an MHSC flex-to-pipe adapter (FPA) and/or rigid pipe section(s)is required to connect the flexible vent assembly to the vertical termination by using three
self-penetrating screws.
2. Review Figure 33 and corresponding instructions for proper overlap, clamp and screw
placement.
3. Three each self-penetrating screws are drilled opposite one another and below the gearclamp.
4. Use only listed and approved terminations and accessories, installed per the installation
instructions and Figure 32.
E. Installing flexible venting to horizontal termination assemblies.
1. Connect the 5" flexible vent to the horizontal termination as in Figure 34.
2. Connect the 8" flexible vent to the termination ring as in Figure 34.
3. Review Figure 34 for proper overlap and clamp placement.
4. Three each self-penetrating screws are drilled opposite one another and below the gearclamp.
5. Use only listed an approved terminations and accessories, installed per the termination
instructions and Figure 34.
Rigid Pipe Length
Termination
Cap
Flashing

Storm Collar
Roof Support

Rigid Pipe
LengthScrews(3 Places
equidistantjust above
gear clamp)

Flex to Pipe Adapter

Gear Clamp
1C\v" Flexible Pipe and Adapter
Outer Collar Overlap

Flex to Pipe
Adapter
Gear Clamp

Firestop

UL1777 Flex Vent

Figure 33 FP1975
Typical Pipe Connection

pipe connection

UL1777 Flex
PIpe

DVFF8A/8
AdapterScrews(3 Places equidistant justabove gear clamp)

UL1777 Flex Vent
FP1974

Figure 32 Typical Vertical Flex Vent Installation

20303735

MHSC Horizontal
Vent Termination

Gear Clamp

1C\v" Flexible Pipe andCollar Overlap

Figure 34 Typical Horizontal Flex Vent Installation

FP1976
horizontal flex

23

fireplace installation

VWDV70 Series Gas Fireplacecheck gas type

Use proper gas type for the fireplace you are installing. If you have conflicting gas type, do notinstall fireplace. See dealer where you purchased the fireplace for proper fireplace for your gas
type or conversion kit.

A qualified installer or service person must
connect appliance to gas supply. Follow
all local codes.

CAUTIONWARNING

Install gas piping to fireplace location

installation items needed

For propane/LP units, never connect
fireplace directly to the propane/LP
supply. This burner system requires anexternal regulator (not supplied). Install
the external regulator between the burnersystem and propane/LP supply.

Before installing fireplace and burner system, make sure you have the items listed below.

• External regulator (supplied by installer) • Piping (check local codes)• Equipment shutoff valve*• Sealant (resistant to propane/LP gas)
• Test gauge connection*• Sediment trap (recommended)• Tee joint• Pipe wrench• Approved flexible gas line with gas connector (if allowed by local codes — not provided)*

A CSA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the CSA design-certified equipment shutoff valve from your dealer.

External
Regulator

100 gallon (min)Propane/LP Supply
Tank

Vent Pointing
Down

FP1977

Figure 35 External Regulator with Vent Pointing Down
(Propane/LP Only)
FP1977
external regulator

24

CAUTION

For propane/LP connections only, the installer must supply an external regulator. The external regulator will reduceincoming gas pressure. You must reduce incoming gas pressure to between 11 and 13 inches of water. If you do not
reduce incoming gas pressure, burner system regulator damage could occur. Install external regulator with the ventpointing down as shown in Figure 35. Pointing the vent down protects it from freezing rain or sleet.

Use only new black iron or steel pipe.
Internally tinned copper or copper tubing
can be used per National Fuel Code, Section
2.6.3, providing gas meets hydrogen sulfide
limits, and where permitted by local codes.
Gas piping system must be sized to provide
minimum inlet pressure (listed on data
plate) at the maximum flow rate (BTU/hr).
Undue pressure loss will occur if the pipe
is too small.

When using copper of flex connectors use only fittings
approved for gas connections. The gas control inlet is3/8" NPT.
The gas control is equipped with a captured screw typepressure test point, therefore it is not necessary to provide
a 1/8" test point up stream of the control.
Always provide a union when using black iron pipe so
the gas line can be easily disconnected for burner or fan
servicing. Refer to gas specifications for pressure details
and ratings.
The fireplace valve must not be subjected to any test pressures exceeding 1/2 psi. Isolate or disconnect this andany other gas appliance control from the gas line whenpressure testing.
20303735

VWDV70 Series Gas Fireplace

Only persons licensed to work with gas
piping may make the necessary gas
connections to this appliance.

CAUTIONWARNING

fireplace installation

A manual shutoff valve must be installed
upstream of the appliance. Union tee
and plugged 1/8" NPT pressure tapping
point should be installed upstream of theappliance. Figure 36

NOTE: The gas line connection may be made using 1/2" rigid tubing or an approved flex connector.
Since some municipalities have additional local codes it is always best to consult your local authorities
and the current edition of the National Fuel Gas Code ANSI.Z223.1, NFPA54. In Canada CSA-B149(1 or 2) Installation Code.
A listed manual shutoff valve must be installed upstream of the appliance. Union tee and plugged
1/8" NPT pressure tapping point should be installed upstream of the appliance. Figure 36

Check your building codes for any special requirements forlocating equipment shutoff valve to fireplaces.
Apply pipe joint sealant lightly to male threads. This will prevent
excess sealant from going into pipe. Excess sealant in pipe
could result in clogged burner system valves.

CAUTION

IMPORTANT: Install main gas valve (equipment shutoff valve) in an accessible location. The main gas
valve is for turning on or shutting off the gas to the fireplace.

Use pipe joint sealant that is resistant toliquid petroleum (LP) gas.

We recommend that you install a sediment trap/drip leg insupply line as shown in Figure 36. Locate sediment trap/drip leg where it is within reach for cleaning. Install in piping system between fuel supply and burner system. Locate sediment trap/drip leg
where trapped matter is not likely to freeze. A sediment trap collects moisture and contaminants andkeeps them from going into the burner system gas controls. If sediment trap/drip leg is not installed
or is installed wrong, burner system may not run properly.

CSA Design-Certified
Equipment Shutoff Valvewith 1/8" NPT Tap*
Approved Flexible
Gas Line

Natural Gas
From Gas Meter(4.5" w.c. to 10.5" w.c. Pressure)
Propane/LP
From External Regulator(11" w.c. to 13" w.c. Pressure)
Tee Joint

Sediment Trap/Drip Leg

Pipe Nipple
Cap

Figure 36 Gas Connection

3"

Mi

nim

um

FP1978gas connection

20303735

25

VWDV70 Series Gas Fireplace

SIGNATURE COMMAND - CHECK GAS PRESSURE

1. Check gas type. The gas supply must be the same asstated on the appliance’s rating decal. If the gas supply
is different from the fireplace, STOP! Do not install theappliance. Contact your dealer immediately.
2. To ease installation, a 18" (457 mm) flex line with manual
shut-off valve has been provided with this appliance.
Install and attach 1/2" gas line onto shut-off valve.
3. After completing gas line connection, purge air fromgas line and test all gas joints from the gas meter to thefireplace for leaks. Use a solution of 50/50 water andsoap solution or a gas sniffer.
4. To check gas pressures at valve, turn captured screw
counter clockwise 2 or 3 turns and then place tubing
to pressure gauge over test point. Turn unit to high.
Figure 37. After taking pressure reading, be sure andturn captured screw clockwise firmly to reseal. Do not
over torque. Check test points for gas leaks.

Pressure Inlet

FP1909a

Pressure Outlet

WARNING

Figure 37 Signature Command Valve

Electrical Wiring

26

Do not FP1909ause open flame to check for gas
leaks.

WARNINGsignature command valve
alternate view
8/08

Electrical connections should only
be performed by a qualified, licensed
electrician. Main power must be off whenconnecting to main electrical power supply
or performing service. All wiring shall bein compliance with all local, city and state
codes. The appliance, when installed, mustbe electrically grounded in accordance withlocal codes or in the absence of local codes,
with the National Electrical Code ANSI/NFPA
70 (latest edition) and Canadian ElectricalCode, CSA C22.1.

CAUTION

General1. This fireplace is equipped with the Signature Control
valve which operates on 6 volts. The A/C module plugs
into the fireplace junction box A/C power supply. Four(4) “AA” batteries are used for back up during power
outages.
2. The Signature Command System can also be operated
without A/C power. The system can run on four (4) “AA”
batteries for approximately six (6) months under normaluse.
3. A/C power must be used to power the A/C module,
blowers, lights and AUX accessories used with thisfireplace.

Pilot Adjustment Screw

Label all wires before disconnecting whenservicing controls. Wiring errors can cause
improper and dangerous operation.

20303735

ELECTRICAL INSTALLATIONVWDV70 Series Gas Fireplace

JUNCTION BOX WIRING

1. This should be done before framing the fireplace. Wire the receptacle into an electrical circuit.
Wire with minimum 60° C wire in accordance with prevailing
codes.
2. Remove the external junction box cover by removing thescrew from the side of the outside firebox wall. Junction box
was installed at the factory.
120V AC
3. The junction box cover has a factory installed “romex” style
60Hz
strain relief connector. After connecting the wires, route thewire leads through this connector. Refer to the wiring diaFactory Supplied
Not Suppliedgram in Figure 38.
Junction Box

COMMAND CENTER WALL INSTALLATIONThe Command Center should be mounted on the wall using
the parts supplied (15 ft. cable, junction box, wall cover).
1. Mount the junction box provided at the desired locationon the wall. Do not extend beyond the 15 ft. wire cableprovided. If a longer distance is required, the 15 ft. may
be extended to 30 ft. maximum by using two (2) cables
plugged together.
2. Attach cable to Command Center by inserting connector
into socket at rear of Command center.
3. Snap wall cover provided onto Command Center andscrew into junction box. Figure 39
Junction Box
Wall
Cover

WARNING

Figure 38 Junction Box Wiring Diagram

FP1912box switch
wiring to 110 V
Do notJunction
connect wall
circuit. 8/08

4. Route the cable end without connector into the fireplace
control housing through the plastic grommet on the rearwall.
5. Attach the plastic connector to the 6 pins from the cableby pushing each pin into connector. Make sure to follow
the color code on connector. Figure 40
6. Attach connector into control board socket. Refer towiring schematic.

CommandCenter15 ft. Cable
+

+

Black
Brown
Red
OrangeYellow
Green

+

KT555

+

-

Batteries

ScrewsFigure 40

Figure 39 Snap Wall Cover in Place

20303735

Plastic
Connector

KT555
junction box
12/08

KT129315 ft cable plastic conn
27

ELECTRICAL INSTALLATIONVWDV70 Series Gas FireplaceLight
300 Watt Max.

Pilot

WHITE

BLACK

Opt. Blower
Opt. Aux.

WHITE
BLACK
BLACK
WHITE

300 WattMax.

PLUG-IN
CONNECTOR

A/C MODULE

GREENRF Receiver
On/off Button

Control Board
BLACK/Thermopile
RED/Thermopile

Conversion
NG/LP

Sensing

Igniter / Sparker
Plug In Connector
Control Box to Command Center

15 ft.
Cable

GroundPlug In Connector
Stepper Motor toControl Box

CommandCenterMaster
SwitchDC Power/green

Plug In Connector
Control Box toSolenoid

ON/HI
LED

Gas InGas Out
Pilot Gas Tubing

4-aa Battery
Compartment

figure 41 Signature Command Wiring Diagram

OFF/LOCAUTION

Valve

28

Electrical connections should only be
performed by a qualified, licensed electrician.
FP2942Main power supply must be turned off before
Sign command wiring diagram
connecting fans to the main electrical power
supply or performing service.
20303735

glass removal & light placement

VWDV70 Series Gas Fireplace

Glass Frame Removal
1. Use glass frame latch tool packed with unit to unlatch the three (3) frame latches.
2. Pull frame away from unit and lift up and away. CAUTION: Frame is heavy: lifting may require
two (2) people.

CAUTION

Glass Frame
Latch Tool

Glass frame is heavy: lifting may require
two (2) people.

Figure 42 Remove Glass Frame
FP2936

BULB REPLACEMENT Fp2936
glass frame removal
CAUTION: Main power supply must be turned
OFF before replacing bulbs.
1. Remove front light socket cover.
2. Use a Phillips screwdriver to remove socket
plate with bulb to be replaced. Figure 41
3. Replace socket and socket cover in reverse
order.

RemoveScrewsPORCELAIN PANELSNOTE: You must purchase and install a porcelain panel kit for this fireplace. Refer to Page
45 for kit part numbers.

Socket Plate
FP2937

Light Socket
Cover

Figure 43 Replace Light Bulbs

20303735

29
FP2937bulb replacementglass & STONE placement

VWDV70 Series Gas Fireplace
GLASS AND STONE PLACEMENT
If you will be installing the optional accessory log set,
Model LKW70, install the two (2) rear logs before installingthe decorative colored glass. Refer to Accessory Log Set
Installation, Page 31.
Find the pre-molded 4-stone assembly. Place these stones
over the pilot assembly by aligning the holes in the bottomof the stone assembly with the pins on either side of thepilot assembly. Figure 45
NOTE: The 4-stone assembly must be installed before any
decorative glass is installed.

CAUTION: Do not allow these stones to contact any partof the pilot parts. Do not allow any of the pilot flames tocontact any stones. Do not allow stones to sit directly on
burner ports or in flames.
Place three (3) pieces of hearth glass lenses (supplied)
into opening on hearth in front of burner.
Unpack all decorative colored glass and stones included inkit. Carefully mix the two colors of decorative glass. Placethe decorative colored glass above and outside the burnerto cover hearth area. Spread decorative glass in a single
layer. Figure 44
CAUTION: Do not place decorative colored glass over the
open gap between burner and hearth as this will block the
air flow and affect the performance of
the unit. Keep decorative glass behindbracket surrounding the burner andhearth.
Find the four (4) large stones. Placethem along the rear wall approximately
equally spaced as shown in Figure
46.

LG1100Figure 44 Glass Placement

Place the remaining stones randomly
outside the burner area over the hearth
and hearth glass all around the burner.
Figure 47

Turn burner on and adjust decorative
glass over the ported burner area toachieve an even, clean flame.
Replace glass door frame.

LG1100VWDV70 glass

LG1113Figure 45

LG11134 pilot stones

Figure 4630

LG1114

LG11144 large stones

20303735

ACCESSORY LOG INSTALLATIONVWDV70 Series Gas Fireplace

Figure 47 Stone & Glass Placement

LG1115ACCESSORY LOG INSTALLATION:
MODEL LKW70
LG1115WARNING: Turn fireplace VWDV70
off and allow
to cool comstones
pletely before beginning installation.

WARNING: Only a qualified service person should
service or repair this fireplace.
Kit contents:
7 logs (1 each):#1, Large Rear Left Log (20303910)#2, Large Rear Right Log (20303911)#3, Medium Top Middle Log (20303912)#4, Medium Top Left Log (20303913)#5, Medium Top Right Log (20303914)#6, Small Front Left Log (20303915)#7, Small Front Right Log (20303916)
3, Log Support Pin Brackets (20303455)
6, #8 Bracket Mounting Screws

LG1108Figure 48

Installation Instructions
NOTE: The two (2) large rear logs should be installed before installing the decorative colored glass on hearth.
1. Remove the glass door. Use glass door latch tool
packed with unit to unlatch the three (3) frame latches.
Page 29, Figure 42. NOTE: Glass door is heavy; anassistant may be necessary.
2. Mount the three (3) log support pin brackets along
the left side and center of the rear floor at the sets ofmounting holes using screws provided. Figure 48
IMPORTANT: Do not remove the two (2) short pins oneither side of the pilot.
3. Place the large rear left log #1 by aligning the holes inthe bottom of the log with the two (2) pins. Figure 49

Rear Left Log, #1

LG1108log post bracket

Figure 49
LG110220303735

LG1102
LKW70 Rear left log

31

ACCESSORY LOG INSTALLATIONVWDV70 Series Gas Fireplace
4. Place the large rear right log #2 by aligning the three (3) holes in the bottom of
the log with the three (3) pins. Figure50
5. Place decorative colored glass suppliedwith fireplace. Page 30

Large Rear Right
Log #2

LG1103Figure 50

Medium Top Middle Log #3

LG1103
6. Place medium top middle
LKW70 rear right log log #3 across the rear logs

by aligning the two (2) recesses on the bottom of thelog with the key protrusions
on each of the rear logs.
The front branch of the top
log may rest on top of thedecorative colored glass.
Figure 51

LG1104

Medium Top
Left Log #4

Figure 51

KT1104
LKW70 top middle log
7. Place the medium top left log #4
onto the left end of the rear left log#1 by aligning the recess with the
key protrusion on the rear left log.
Figure 52

Figure 52

3220303735

ACCESSORY LOG INSTALLATION
8. Place the medium top right log#5 onto the center of the rearright log #2 by aligning the recess with the key protrusion on
the rear right log. Figure 53

VWDV70 Series Gas Fireplace

Medium Top Right
Log #5Figure 53

LG1106

9. Place the small front left log #6 on
top of the decorative glass towards
the left side of the hearth. Figure 54
IMPORTANT: Do not place this log inor near the burner port area. To prevent sooting and poor combustion,
do not allow the burner flames tocontact this log.

LG1106
LKW70 top right log

Figure 54
Small Front Left
Log #6
LG110920303735

33

LG1109

ACCESSORY LOG INSTALLATIONVWDV70 Series Gas Fireplace

10. Place the small front right log #7 on
top of the decorative glass towards
the right side of the hearth. Figure 55
IMPORTANT: Do not place this log inor near the burner port area.

Figure 55

LG1107

Small Front Right
Log #7

Figure 56 shows the completed log set installation.
11. It is not necessary, but if you choose, you may placea few stones randomly around the front of the logs on
LG1107
top of the decorative colored glass. If the accessorylog(6) of thelog set is installed, LKW70
use no front
more rightthan sixstones supplied.
12. Replace glass door.
Installation complete.

LG1110Figure 56 LKW70 Complete Log Set Installation

34

LG1110
LKW70 log set

20303735

signature command - OPERATING INSTRUCTIONSVWDV70 Series Gas Fireplace

WARNINGfor your safety read before lighting
If you do not follow these instruction
exactly, a fire or explosion may result
causing property damage, personal
injury or loss of life.

A. This appliance is equipped with an ignition device which automatically lights the pilot. Referto the instructions.
B. BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to
the floor because some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS:
• Do not attempt to light any appliance.
• Do not touch any electric switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the fire department.
C. Use only your finger to push in the master switch. Never use tools. If the switch will not functionby hand, do not try to repair it. Call a qualified service technician. Force or attempted repair
may result in a fire or explosion.
D. Do not use this appliance if any part of it has been under water. Immediately call a qualified
service technician to inspect the appliance and to replace any part of the control system andany gas control that has been under water.

20303735

35

signature command - OPERATING INSTRUCTIONSVWDV70 Series Gas Fireplace

OPERATing INSTRUCTIONS
1. STOP! Read the safety information above.
2. This appliance is equipped with an ignition device which automatically lights the burner. Do not try
to light the burner by hand.
3. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smellgas, STOP! Follow "B" in the safety information on Page 31. If you do not smell gas, go to nextstep.
4. Press the master switch to the "ON" (-) position. Within eight (8) seconds it will beep once. This
indicates the system is ready.
5. Press "ON " button. Sparker will spark and pilot flame will light.
6. Once pilot flame is established, the main burner flame will light automatically.
7. If the pilot will not stay lit after several tries, turn the master switch to "OFF" and call your service
technician or gas supplier.

OFF

OFF

ON

Master
SwitchON

Command Center

FP1913
Switch box
8/08

FP1914
Pilot w sparker
8/08

TO TURN OFF GAS TO APPLIANCE
1. Turn master switch to "OFF".
2. Turn off all electrical power to the appliance if service is to be performed.

3620303735

SIGNATURE COMMAND SYSTEM OPERATION INSTRUCTIONSFEATURES

To Thermopile

RF Receiver
ON/OFF

Command Center

VWDV70 Series Gas Fireplace

To Sensor• Easy Access Function Operation and System Configuration• Operation Confirmation/Fault Diagnostic Indications(LED/Buzzer)• ON/OFF/HI/Med/Low Operation• Optional Wall Mounting
Control Board

NG/LP
Conversion• Electronic Ignition• Pilot Lockout safety feature• Electric Power Regeneration from Thermopile to save
•
•
•
•
•
•
•

To Sparker

battery
6-hour Automatic Shut Down Option
Convenient NG/LP Gas Type Conversion
Standing Pilot/Intermittent pilot Conversion
Previous settings Restoration Ability (Memory Off)
Uninterrupted Operation During Power Outage (Automatic Battery Backup)
ON/OFF RF Remote Receiver
Optional Transmitter Learn Capability

AC Module (Requires TSFSC Remote)• Easy Snap-on Design• Embedded Compact 120 VAC Adapter with Auto Battery

To Command Center

Control
Board

To Stepper Motor
To Valve

ON
LED

Master
SwitchAC ModuleOFF

CommandCenterBattery Door

FP1917

Figure 57 Signature Command System Components

Back up Feature

FP1917• Remote Controlled 3-step Blower, Lighting, and On/Off Auxiliary AC Outputs
Signature components
Transmitter
TSFSC
8/08
Three Flame Height Settings
X
Low battery Indication for Transmitter
Child Proof Lock-out
LCD Backlight
Security Codes 16
Countdown 6 hr Timer
Standard Thermostatic Control Mode
Smart Mode Thermostat (Auto Flame & Blower Modulation)
Three Brightness Settings for Lights
Three Speed Control for Blower
On/Off Auxiliary
Programmable Timer to turn blower on and off

X
X
X
X
X
X
X
X
X
X
X

BATTERY INSTALLATIONThe Command Center uses four (4) "AA" batteries as back up for power outages. The system can operate forapproximately six (6) months on battery power.
To Install Batteries (not included):
1. Press down the battery door tabs and pull out to remove battery door.
2. Install the batteries as indicated on Command Center.
3. Close battery door by snapping in place.
4. When the four (4) batteries are installed the system will operate without power.
5. The batteries should be replaced when the LED indicates low battery or at least once a year.
20303735

37

VWDV70 Series Gas Fireplace

SIGNATURE COMMAND SYSTEM OPERATION INSTRUCTIONSSYSTEM CONFIGURATION/SETUPAll System configuration/setup is done on the Command Center.
NOTE: When using On/Off wall switch, the switch must be in the ON position to perform all configuration set ups at
the command center.
Intermittent/Standing Pilot Setup (Default intermittent)
1. Holding the ON button on the Command Center while turning on the master switch will toggle between standing
pilot and intermittent pilot.
2. After the above operation, one beep (for standing pilot) or two beeps (for intermittent pilot) will be given as confirmation.
Six-hour Safety Shutdown Option (Default ON)
1. The system comes preset from the factory with a six (6) hour shutdown from its last command of operation. This isdone to prevent the fireplace from continuing to operate if unattended. You may disable this feature if you wish.
NOTE: By disabling this feature, your fireplace may continue to operate unattended.
2. When the master switch is in the ON position (“-”), pressing the ON button and the OFF button on the CommandCenter simultaneously will toggle between enabling and disabling the six-hour shutdown option.
3. After the above operation, one beep (for enabling the six-hour shutdown option) or two beeps (for disabling thesix-hour shutdown option) will be given as confirmation.
Remote Transmitter Learn Function (Default ON)
1. The RF receiver button located on the Control Board must be in the on position before the learn function can
begin. Use paper clip to depress button. One beep for RF receiver ON or two beeps for RF receiver OFF will begiven as confirmation. Refer to Figure 57 for location.
2. After the RF receiver is on, holding the OFF button on the Command Center while turning on the master switch
will activate the learn function for the transmitter.
3. After the above operation, two beeps will be given and the green LED on the Command Center will flash for 10
seconds.
4. During the 10 seconds, press the OFF button on a transmitter to learn. Another two beeps will be given to confirm
a successful learning. Refer to transmitter instructions for remote operations.
Shutting Off the Standing Pilot (Temporary Shut Off)To shut off the standing pilot for service or summer shut down, press and hold the ON button on the Command Centerfor 3 seconds when the master switch is in the ON position (“-”) and the main burner is off.
Note: Pilot will resume the next time system is turned on.

Key Combinations for System Settings
NOTE: When On/Off wall switch is used, it must be in the On position to perform all system setups.

Function	Operation
Intermittent/Standing
Pilot Setup
Standing Pilot Temp.
Shutoff
RF Remote Receiver
On/OffLearn Remote
Transmitter
6-hour safety
shutdown setup

38

Hold the ON ▲ button while turning on the master switch(Beep once for standing pilot, twice for intermittent pilot)
Hold the ON ▲ button 3 seconds (when the master switch
on the main burner is off)
Push the RF receiver On/Off button on the control board
Beep once for ON and beep twice for OFF
Hold the OFF ▼ button while turning on the master switch(Beep twice then press any handheld remote button)
Press the ON ▲ button and OFF ▼ button simultaneously(Beep once for ON, twice for OFF)

Default Setting
Intermittent
Pilot

RF OFF		

ON

20303735

SIGNATURE COMMAND SYSTEM OPERATION INSTRUCTIONSVWDV70 Series Gas Fireplace

FUNCTIONS/OPERATION
Turning on the fireplace
1. Turn on the master switch and wait for a beep.
2. Press the ON button on the Command Center or turn on wall switch. Pilot will light and burner will come on High setting or last memory setting (See Turning Off Fireplace below). For memory feature.
Pilot Safety Lockout Function
1. If the pilot doesn’t light after sparking for 30 seconds, pilot trial lockout happens. The LED on the Command Center
flashes Green once every 2 seconds, until reset.
2. If the pilot flame is lost during normal operation, the system will try three (3) times to relight after three (3) failures,
flame loss lockout happens. The LED on the Command Center flashes Red-Green once every 2 seconds, until reset.
3. Turning the master switch on the Command Center to the off position, then ON again will reset the system.
Flame Height Control
1. Press the ON button (on the Command Center) once to turn on the main burner with maximum flame height.
2. Press the OFF button to decrease flame height. The first two presses will decrease the flame height to medium andlow.
3. The third press on OFF will turn off the main burner. In standing pilot configuration, the pilot will stay; in intermittent
pilot configuration, the pilot will be shut off.
Turning the Fireplace Off
There are three ways to turn the fireplace off.
1. Flip the master switch to the off (“O”) position. (This will turn the entire system OFF.)
2. Press the OFF button to Medium, Low, then Off.
3. Hold the OFF button anytime for three seconds or by turning off the wall switch. These two commands of OFF are(Memory Off) the system will remember all last settings before turning off. The next time the fireplace is turned on, allsettings will resume. To reset, change to the desired settings and shut off by using the Memory Off commands andthe system will be reset to those new settings.

Command Center Operations:
The following functions are available on the Command Center.

Function	Operation
Power Up
Fireplace ON
Fireplace OFF		
Flame Height Up
Flame Height Down

Flip the master switch to the ON ("_") position to power up the system
Press the ON ▲ button on the Command Center or turn on wall switch to turn the fireplace on
Flip the master switch to the OFF ("o") position OR press the OFF ▼ button 3 			
times OR for Memory Off, hold the OFF ▼ button 3 seconds, or turn off wall switch
Press the ON ▲ button once to turn on the fireplace with maximum flame heightPress the OFF ▼ button to lower the flame height to Medium and Low

Self Diagnostics Chart:

The Command Center has a self-diagnostic LED enabling you to troubleshoot problems and potentially avoid a service call. Please refer to the charts below for indicator reference.
Fault
Conversion Cover Missing
Spark FailNo Sensor Signal
Pilot Lockout - trial
Pilot Lockout - flame loss
Low Battery
No or Low Thermopile Power
Learning
AC Power On
Pressure Switch Failed (Power Vent only)

20303735

LED Indication
One RED (1 time)
Two RED (1 time)Three RED (1 time)
One GREEN, every 2 sec. (until manual reset)
One RED-GREEN, every 2 sec. (until manual reset)
One RED, every 10s (continuously)
Two RED, every 10s (continuously)
GREEN Flashes, every 1 sec. (for 10 sec.)
GREEN solid
One RED every 2 sec. (until manual reset)

39

Information Bar
The information bar shows the room temperature, the“sending signal” radio icon, the low battery indication icon,
the child-proof icon, and the flame icon. This area doesn’t
have touch buttons.

• The room temperature will always be shown after•••

power-up. It displays the room temperature from 40°F to 99 °F. “Lo” and “HI” will be displayed when theroom temperature is lower than 40°F or higher than
99°F, respectively.
The radio icon will be shown when the transmitter issending a signal.
The low battery indication icon will be shown when
the battery voltage is low.
The child-proof icon will be shown when the childproof mode is activated.
The flame icon indicates the current flame height- Off, Low, Medium and High

Touch Area
The touch area contains all touch buttons to control thetransmitter. It consists of two categories: menus and adjustment arrows. The blue LED backlight lights up for 8
seconds when any of the touch buttons is pressed.

40

Logo
Bar

Figure 58 shows the display of the TSFSC LCD.

Adjustment
Controls

Turn appliance OFF (at the Master Switch) if
you are away from your house for an extended
period of time. Never leave anything on top of
the surface of the transmitter.

n Function Areas of the LCD Display

•

Menus

Due to the sensitive temperature monitoring
components in the transmitter, it is necessary
to allow the transmitter to stabilize to room temperature before accurate room temperatures
are displayed. If the transmitter is activatedfrom a severe cold condition, allow 15 minutes
for accurate temperature readings to appear on
the LCD display.

Touch Area

WARNINGTOUCH SCREEN REMOTE CONTROL OPERATION
Information
Bar

NOTE

VWDV70 Series Gas Fireplace

Logo Bar

Function Areas of the LCD Display
Figure 58

The Logo Bar contains the brand logo: Signature Command System.
n Initialization and FP2646
Setting up

TSFSC display
Installing Batteries:
Figure 59
The remote transmitter has
two battery compartments,
one on each end of the transmitter. Always change all
four (4) batteries at thesame time.

Battery Door
Tabs

To install batteries,
1. Press down the battery
door tab and pull out to remove the battery door.
Figure 59
2. Install the batteries as indicated inside the battery compartments.
3. Close the battery door by snappingin place.
FP2607
4. When all four batteries are installed,
the transmitter
install battery
will initialize for 5 seconds and then is ready for use.
5. The batteries should be replaced every 12 months orwhen the low battery icon indicator is displayed.

• The menus include TIMER, THERMO, LIGHT, FAN

Changing Temperature Unit•

1. All available icons on the LCD will be turned on thenbe cleared.
2. The LCD will display temperature unit: °F. Use ON ∆to toggle the units between °F and °C within the first 5
seconds.
3. The transmitter enters Manual Mode
4. The LCD displays room temperature with the chosen
unit.

and AUX.
The adjustment arrows include ON/up and OFF/down. Their default function is to adjust the flame
height. When a button from the menu is pressed,
the ON/up and OFF/down buttons will temporarily
become adjustment controls for the selected item.
When the adjustment is done, the ON/up and OFF/down buttons go back to flame height controller
again.

When batteries are installed in the transmitter,

20303735

TOUCH SCREEN REMOTE CONTROL OPERATIONVWDV70 Series Gas Fireplace
ON
LED

Setting Privacy Code on Transmitter:
Figure 60
The remote transmitter privacy code is preset in factory.
In the event of activation or interference from other nearby
transmissions, change the code using the following procedures (learn function must be performed after changing
the code):

Master SwitchOFF

WARNING

1. Press the ON/arrow button andthe TIMER button at the same
FP2650time to enter privacy code setup
mode.
Front Panel
Battery Door
Figure 62 2. The setup display is shown in the
Bezel Optional
Command Center
figure. The four digits on the top
stand for the privacy code (as the
4. During the 10 seconds, press the OFF button on theactual DIP switches on Ambient’s
transmitter to learn. Another two beeps will be given toprevious remotes). The default
confirma successful learning. Figure 62
FP2650values of the four digits will be allcommandctr (2)
ctrlorbrd“1” (ON).
Do
not use twomore remote control sysFigure60
tems in the same area with the same privacy
3. The first digit will be flashing uponcode setting, as they will communicate withentering the setup mode. Push the ON button to toggle
FP2649each other. This may cause the appliances to
its value between “0” (OFF) and “1”(ON),and push themalfunction.
“OFF” button to jump to the next digit.
next digit
setTheprivacecode
will then start flashing and the first one stops flashing.
Resetting the transmitter:Set up the four digits to your choice.
If the transmitter is not working properly, reinstall the bat4. After setting up all the four digits, push “OFF” to finish
teries to reset the transmitter.
the process and return to the previous mode.
1. Pull out at least one of the batteries.
5. The Signature Command control board then needs tore-learn the new setting.
2. Press any key on the screen to discharge.
3. Wait for 10 seconds and reinstall the batteries.
Performing Learn Function
1. The RF receiver button on the control board in the fireplace must be in the on position before the learn function can begin. Figure 61. With the Command Center
master switch in the ON position, use paper clip to depress the recessed button on Control Board, one beepfor RF receiver ON or two beeps for RF receiver OFF.
2. Holding the OFF button on the Command Center
while turning on themaster switch will
RF Receiver
activate the learn
ON/OFF
function for thetransmitter.
3. After the above operation, two beeps
will be given andthe green LED on
the Command Center will flash for 10
seconds.
Control Board
Figure 61

20303735

Pushing and holding any key for more than 10 seconds
until the display refreshes will also reset the transmitter.
n Functions and Operations
General:The TSFSC Remote Control has four (4) operating modes:
Manual, Timer, Thermostatic and Smart Mode. The control system can be set to temperature range between 45°
F and 90° F. The blower speed and flame height can be
adjusted in the manual, timer and thermostatic mode. The
Smart Mode will automatically adjust flame height andblower speed according to the difference between Set
and Room temperatures.
The transmitter will operate the remote receiver from 1
foot to a maximum of 30 feet. The distance is reduced
when batteries are low.
Manual Mode
Figure 63
In this mode, the TIMER button and the THERMO button will only display “TIMER” and “THERMO”, respectively without showing the time and the SET temperature.
Pressing the ON/up and OFF/down buttons will change
the flame height if none of the menu buttons (TIMER,
THERMO, LIGHT, FAN, AUX) are pressed and flashing.

FP2650command ctr ctrl brd

41

VWDV70 Series Gas Fireplace

TOUCH SCREEN REMOTE CONTROL OPERATION

1. Press the ON/up button to turn on the fireplace. The
flame icon on the LCD displaysHigh.
2. Press the OFF/down button to
decrease the flame height andturn off the fireplace. When the
OFF/down button is pressed
for three times, the flame iconchanges from High to Medium,to Low, then to Off.
3. If the OFF button is held formore than 3 seconds at any
flame height, the fireplace will
be turned off and the flame icon
disappears.
4. Sliding up and down on the arFigure 63
row buttons can also turn on or turnFP2651
off the fireplace.
5. If the fireplace is shut off using the above
methods
Manualmodein 3
and 4, all the settings will be remembered and will beresumed next time the fireplace is turned on (Memory
Off).
Timer Mode
Figure 64
Press the TIMER button to enter
timer mode. The fireplace will stayon for a period of time as specified
by the timer and then be shut off
by the transmitter when the timer
counts down to zero.
1. When the TIMER button ispressed, the Set Time appears
in the frame of the button andflashes.
2. Use ON/up and OFF/down toincrease or decrease the Set
Figure 64
Time in 15 min. increments, between 0:00 to 6:00.
FP2652Sliding up and down on the arrow buttons
will increasemode
or decrease the Set Time in 1 hour Timer
increments.
3. Push the TIMER button again to confirm the Set Time,the transmitter sends an ON signal to turn on the fireplace.
4. The flashing stops and the ON/up and OFF/down buttons become flame height controller again. The flame
height will then stay as set up by the ON/up and OFF/down buttons.
5. The TIMER button can be used when the transmitter is in Manual Mode or in Thermostat Mode. In bothmodes, the fireplace will be shut down completely
when the timer counts down to zero.
6. To exit Timer Mode,a. Push and hold the TIMER button for 3 seconds Or
b. Use the OFF/down buttons to decrease the Set
Time to zero Or
42c. Slide down on the arrow buttons to exit TIMER
mode and shut off the fireplace.
Thermostat Mode
Figure 65
NOTE: The Command Centerbuttons will disable when thermostat is being used.
Press the THERMO button to
set the transmitter in thermostat
mode. The transmitter will automatically turn on the fireplacewhen the room temperature is
below the set temperature andturn off the appliance when theroom temperature is above theset temperature within one degree.

Figure 65

1. When the THERMO button is pressed,
the Set temperFP2653
ature appears in the frame of the button and flashes.
thermo mode
2. Use ON/up and OFF/down to increase or decrease
the Set temperature in 1 degree increments, between
45 degrees and 90 degrees. Slide up and down on thearrow buttons will increase or decrease the Set Temperature in 10 degrees increments.
3. Press the THERMO button again to confirm the Set
Temperature. The transmitter will send out an On
signal or an Off signal depending on the relationshipbetween the Set temperature and the Room temperature.
4. The flashing stops and the ON/up and OFF/down buttons become flame height controller again. The flame
height will then stay as set up by the ON/up and OFF/down buttons.
5. To exit Thermostat Mode:a. push and hold the THERMO buttons for 3 seconds orb. slide down on the arrow buttons to exit Thermostat mode and shut off the fireplace.
Smart Mode Option for Thermostat Mode
Figure 66
Press and hold the THERMO button and the ON/UP
button at the same time for
3 seconds to toggle between Smart Mode and theregular Thermostat Mode.
The icon “Smart Mode” willappear under the Set Temperature. The transmitter
will automatically adjust
the flame height according
to the difference between
the Set temperature and

Smart
Mode
Icon

Figure 66

FP265420303735
smart mode

TOUCH SCREEN REMOTE CONTROL OPERATION
the Room temperature. There is no manual flame heightadjustment. The fan speed will also automatically adjust
if turned on.
NOTE: there will a 10 second delay for the flame adjustment when the fireplace is turned on.
1. When Set Temp. is 3° F or higher than Room Temp.,
flame height will be on High.
2. When Set Temp. is 2° F higher than Room Temp.,
flame height will be on Medium.
3. When Set Temp. is 1° F higher than Room Temp.,
flame height will be on Low.
4. When Set Temp. is equal to Room Temp., flame height
does not change (stays on low).
5. When Set Temp. is lower than Room Temp., the fireplace will be shut off.
6. When Set Temp. is 1° F higher than Room Temp.,
again the flame height will be on Low.
7. the fan speed follows the flame height, if the fan isturned on.

VWDV70 Series Gas Fireplace

5. When the fan button is flashing, slide up and down on
the arrow buttons will turn the blower speed to Highor Off directly without pressing the fan button again toconfirm.
6. If the blower is turned on using the FAN button, theblower speed will adjust automatically when using
Smart Mode (See Smart Mode section).
Blower On Delay Time and Off Delay Time Setup(not used with VWDV70)
Figure 68

Blower Speed Control (not used with VWDV70)
Figure 67

1. Hold the FAN button for 3 seconds until two numbers appear on the LCD screen. The
left number is blower On Delayand the right number is blower
Off Delay Time.
2. When the first number is flashing, use the ON/up button to
set the desired On Delay Timefrom 0 to 15 min.
3. Press the OFF/down button
to jump to the Off Delay Time
Figure 68
setup.
FP2656
4. When the second number is flashing,use the ON/up
button again to set the desired Off Delay
Time
from
0
blowerdelay
setup
to 15 min.
5. Press the OFF/down button again to finish the setup
and the new settings will be transmitted to the receiver.
6. The default settings are 5 minutes for the On Delay
Time and 8 minutes for the Off Delay Time, as shown.

NOTE: Blower will only work withflame on.

Light Brightness Control
Figure 69

The blower speed control function
is used to adjust the speed of theblower connected to the Signature
Command System. There are four
speed levels, Off, Low, Medium,High.

The light brightness control function is used to adjust the brightness of the light bulbs connectedto the AC module on the Signature Command System. There
are four light brightness levels
defined: Off, Low, Medium, HighTo exit Smart Mode and shut off the fireplace;a. push and hold the THERMO buttons for 3 seconds, Or
b. press the OFF button, Or
c. slide down on the arrow buttons.
To shut off the Smart Mode option and return to regularthermostat mode, press and hold the THERMO button
and the ON/UP button at the same time for 3 seconds
again.

1. Press the FAN button to enter
the blower speed control mode.
1. Press the LIGHT button to enThe fan icon will start flashing.
ter the light brightness control
mode. The LIGHT icon will
2. Press the ON/up and OFF/
Figure 67
start flashing.
down button to increase/deFP2655
crease the blower speed.
2. Press the On/up and OFF/blower speed control
down buttons to increase/de3. Press the fan button again to confirm the speed setcrease the light brightness
ting. If the fireplace is on, the blower speed will take
Figure 69(Off-Low-Medium-High).
effect right away; if the fireplace is off, the receiver will
FP2657
remember this setting and the blower is still off (see
3. Press the light button again to confirm the setting. The
Lightbright control
blower On Delay and Off Delay in the next section).
new setting will be transmitted to thereceiver.
4. After the signal is sent, the ON/up and OFF/down but4. After the signal is sent, the On/up and Off/down buttons become flame height controller again.
tons become flame height controller again.
20303735

43

VWDV70 Series Gas Fireplace

TOUCH SCREEN REMOTE CONTROL OPERATION

5. When the light button is flashing, slide up and down on
the arrow buttons will turn the light brightness to HIGHor Off directly without pressing the light button again toconfirm
AUX Control (Optional)
The AUX control function is used to turn on orturn off the auxiliary component connected to the
AC module of the Signature Command System.
Press the AUX button to turn on or turn off theauxiliary.
1. When the auxiliary is turned on, the icon will become
solid text and the “ON” icon will appear below
theFP2658“AUX” icon.
AUX
2. When the auxiliary is turned off, the icon will become
hollow text and the “ON” icon will disappear.
NOTE: Some fireplaces use the AUX function to control
options within the fireplace. Refer to fireplace manual for
operation.
Setting up Blank Screen or Constant Display in Idle
Figure 70
There is an option to
set up how the LCD
displays and functions when the transmitter is in idle. There
are two choices:
1. A) Mode. Whenthe transmitter isin idle, the icons
in the “touch area”(timer, thermostat,blower, light andFigure 70
AUX) will disappear, as shown in the figure on the left. When any ofFP2659the touch buttons is pressed, those icons will appear
blank screen
and are ready to operate (default).
2. B) Mode. The transmitter always displays all available
icons showing current status of timer, thermostat,blower, light and AUX as shown in the figure on theright.
Press TIMER and THERMO buttons at the same time for
3 seconds to toggle between A) and B).
1. When the current setting is A), touch any place in thetouch area to bring up the icons then press TIMER button and THERMO button at the same time for 3 seconds. The backlight will flash once to indicate that thesetting has changed to B).
2. When the current setting is B), pressing TIMER button
and THERMO button at the same time for 3 seconds
will switch to A) Mode. The touch area icons will disappear.

44

n Safety Features
1. Low Battery Detection
When low battery condition occurs, the transmitter willturn off the fireplace.
A) Battery voltage is checked every one minute. When the battery voltage is low, theLCD displays a low battery icon which will
exist in all modes.
B) The transmitter will not operate with low battery
FP2612
voltage. Change the batteries before the batteries
become too weak for normal operations.
low battery
2. Power On Initialization
After the power-on initialization, the transmitter sends
a signal to turn off the fireplace.
3. Thermal Shutdown
When the ambient temperature is more than 99°F, thetransmitter will turn off the fireplace.
A) The LCD will display “HI”.
B) The Transmitter will not function until
the room temperature has dropped below 99 degree Fahrenheit.
4. Low Temperature Condition
When the ambient temperature is lessthan 40 degrees Fahrenheit, the LCD
FP2613will display “LO”, and NO SIGNAL willHI
be sent to turn on the appliance.
All functions still remain the same forboth Manual Mode and Thermostat
Mode
5. Child-proof Protection
The child-proof icon will be shown when
the child-proof mode is activated bypressing the ON button and the OFF
button at the same time for three seconds.
A) Enter childproof mode by pressing andholding both
FP2614
the ON button and the OFF button simultaneouslo no childly for 3 seconds. The Childproof indicator will beshown on the LCD.
B) Deactivate childproof mode by pressing and holding the ON button and the OFF button simultaneously for 3 seconds again. The Childproof indicator
disappears on the LCD.
C) The transmitter cannot be operated in childproof
mode.

20303735

TOUCH SCREEN REMOTE CONTROL OPERATIONVWDV70 Series Gas Fireplacen Using the Mounting Base
The transmitter comes with a mounting base which allows
you to hang the transmitter on the wall.
1. Secure the mounting baseon the wall with suppliedscrews. For best viewing
angle, make it the sameheight as your eyes.
2. Hang the transmitter on thehook of the mounting base,then push down so thetransmitter is flush to themounting base.

Figure 71

FP2674 TROUBLESHOOTING
mounting base

Symptom	Causes	Action
1. Battery icon on LCD on transmitter
1. Low Battery
1. Replace batteries. Change batteries						 every 6 to 9 months.
2. LCD display is blank			
2. Check battery installation or replace						 batteries.
3. LCD display shows “funny” display			
3. Reset the transmitter (see “Resetting						 the Transmitter” section).
4. Appliance does not come on
2. The transmitter did not match
1. Make sure the transmitter has						 with the receiver		 learned to the receiver.
			
3. Transmitter measures temp1. Move transmitter to a cooler place				 erature exceeding 99 degrees		 and wait until temperature drops						 Fahrenheit and shows “HI” on		 below 99 degrees.			
				 LCD
			
4. Distance between the transmitter
1. Make sure the operating distance is				 and receiver is more than 30 feet		 less than 30 feet.
5. Blower is not on after the fireplace is
5. Blower setting is off
1. Press FAN key to select Fan speed
		 turned on				 you desire.
			
6. Blower delay setting is set too
1. Press and hold FAN key to set 					high		 desired ON/OFF delays. This is done						 in minutes.

20303735

45

FUEL CONVERSIONVWDV70 Series Gas Fireplace

CAUTIONWARNING

This Kit Must be Installed by a Qualified Service Agency
This conversion kit shall be installed by a qualified service agency in accordance with the
manufacturer’s instructions and all applicable code and requirements of the authority having jurisdiction. If the information in these instructions is not followed exactly, a fire, explosion or production of carbon monoxide may result causing property damage, personal
injury or loss of life. The qualified service agency is responsible for the proper installationof this kit. The installation is not proper and complete until operation of the converted appliance is checked as specified in the manufacturer’s instructions supplied with the kit.
LOGS MAY BE HOT TO THE TOUCH. HANDLE THE LOGS WITH GLOVES AND PLACE
THEM ON A NONCOMBUSTIBLE SURFACE WHEN THEY HAVE BEEN REMOVED FROM
THE INSERT.
Before installing conversion kit...
• Disconnect electrical power.
• Shut off gas supply.
• Allow unit to cool.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
The procedure for converting from one gas to anotheris the same regardless of the initial gas used, except
where noted. The only variation is in the orifice sizes
and component part numbers. Your authorized service
provider will ensure the correct parts are used.

2. Carefully remove the stones and glass on the left front
2/3 of the burner to expose the left lens placed in frontof the burner.
3. Remove the two (2) left lenses placed in front of theburner.
4. Remove the right side panel and place on protectedsurface to prevent damage.
5. To gain access to the gas valve and control board,
remove the access plate located on the right side of
the unit by removing the screws that secure the plateto the side.
6. Using the Torx T20 driver or slotted screwdriver, remove and discard the regulator and rubber gasket in
the face of the valve. Figure 72

The parts needed to convert from natural gas to LP
are provided with the fireplace. The parts to convert
from LP to natural gas must be purchased from an
authorized dealer. Refer to Page 54.

Regulator

Conversion parts included:
Burner orifice (refer to Table 1)
Pilot orifice
Gas valve regulator
Conversion rating plate label
Conversion cap
Venturi air shutter (for conversion to Natural gas only)

RubberGasketTools required: Torx T20 Driver (2Z\x” minimum length
recommended) or Slotted Screwdriver, 5/8”, 11/16”, 3/4”
and 7/8” Combination Wrenches, Phillips Screwdriver

CONVERSION INSTRUCTIONS
1. Using the hand tool provided with the unit, remove
the glass door by rotating the three (3) cams to release the door from its locked position. Tilt top ofglass frame away from unit and lift up and away.
CAUTION: An assistant may be necessary to help remove glass frame.
46

Figure 72

7. Install the new regulator with rubber gasket from theKT1196
conversion kit. Make
sure the gasket is seated properly.
SC valve regulator
8. Remove control board and A/C module assembly. It is
attached with velcro fasteners to the wall of the enclosure behind the access plate removed earlier.
20303735

FUEL CONVERSIONVWDV70 Series Gas Fireplace

9. Separate the A/C module from the control board byremoving screw. Figure 73
10. Replace conversion cap with new cap supplied in kit.
Gently remove with small flat screwdriver. Figure 74
11. Reinstall A/C module and control board in reverse order.
A/C Module

Control Board

Table 1				 Orifice Size		
Fuel Type
Left
Middle 	Right
Burner OrificeLP1.25 mm 1.2 mm #56
Burner Orifice Natural
#44
#43
#45
Remove Air
Shutter
Replace Screw

Figure 75 Remove Air Shutters- Conversion to LP

KT1127

Figure 73

Remove
Screw

KT560

KT560
remove air shutter
12/08

KT1127
AC box
Install Air Shutters
to 1/8” Open

KT1193
KT1118Figure 76 Install Air Shutters Conversion to Natural Gas

KT1118
shutter
For conversion toair
Naturalgas:open
Install new air shut-

Figure 74 Convert Control Board

12. Using open end wrenches of 5/8” and 3/4”, loosennuts secured to the injectors through the opening on
the lenses removed earlier. Pull flexline away. ReKT1193
place injectors with injectors provided
in kit. Refertoconversion
cap
Table 1 for correct injector sizes. Injectors are different in size and specific to each burner.
13. For conversion to LP: Unscrew three (3) air shuttersthrough lens opening and discard. Figure 75. NOTE:
Replace screws.
20303735

ters provided and adjust to 1/8" opening. Figure 76
14. Reassemble flex lines to injectors and tighten nuts.
15. Remove the top of the pilot assembly by pulling backslightly on the C-clamp (Figure 77) and pulling straight
up on the hood. Remove the pilot orifice using a flatblade screwdriver and replace with new pilot orificeprovided in kit.
16. Replace pilot hood and C-clamp.

47

FUEL CONVERSIONVWDV70 Series Gas Fireplace

Testing Engine / Burner Assembly

1. Partiallydisengage C-clamp

KT1414

Figure 77

KT1113
remove pilot hood48

1. Turn on the gas shut off valve.
2. Follow Lighting Instructions on the unit. Light the unit
according to Homeowner’s Manual. Use soapy water
to check for leaks on the pilot assembly, regulator,
burner and tubing. Turn off unit.
3. Place the correct Gas Conversion rating label plate
and the regulator’s conversion label on the existing
rating plates. Attach conversion label to control valve.
4. Reinstall stones and glass. Refer to Homeowner’s
Manual
5. Reinstall glass door.
6. Light unit. Check for proper burner flame appearance.
Refer to Homeowner’s Manual.

DANGER

2. Pull up on hoodto remove

Never check for gas leak with open flame!

20303735

WARNING

cleaning and maintenance

VWDV70 Series Gas Fireplace

Turn off gas before servicing fireplace. It is
recommended that a qualified service technician
perform these check-ups at the beginning ofeach heating season
SensorBurner, Pilot and Control Compartment
Thermopile

Keep the control compartment, stones, and burner areas surrounding
the stones clean by vacuuming or brushing at least twice a year. Make
sure the burner porting, pilot air opening and burner air opening are freeof obstructions at all times.

Pilot Flame
The flames from the pilot should be visually checked as soon as theheater is installed and periodically during normal operation. The pilot
flame must always be present when the fireplace is in operation.
Figure 78. The pilot flame has three distinct flames, one engulfing thesensor, one engulfing the thermocouple, and the other reaching to themain burner.

burnerInspect area around the injector. Remove any lint or foreign material witha brush or vacuum.

FP2453Figure 78 Pilot Flame

FP2453hooded pilot flames

Burner Flame
The flames from the burnershould be visually checked assoon as the heater is installed andperiodically during normal operation.
In normal operation, at full rate, andafter operating for about 15 to 30
minutes, the flame should be yellow.
Figure 79
If the flame is blue and candle-like inappearance, adjust glass or add more glass over ports.
NOTE: The type of installation, vent system configuration,
and wind effects may cause the flame patterns to vary.

Figure 79 Burner Flame Appearance

LG1098VWDV70 log flames

20303735

49

VWDV70 Series Gas Fireplacecleaning and maintenance

Vent SysteM
The fireplace and venting system should be inspected before initial use and at least annually by aqualified field service person. Inspect the external vent cap on a regular basis to make sure that nodebris is interfering with the airflow. Inspect entire venting system to ensure proper function.

Glass Door
Thoroughly clean the inside of the glass door after using the fireplace for two hours. Periodically clean
the glass door as necessary.
When cleaning the glass, remember:

•
•
•
•
•
•
•

Do not remove the glass when hot. Allow glass to cool before removal.
NEVER use abrasive materials.
Keep children and pets a safe distance away.
Never operate the fireplace without the glass door properly secured.
Never operate the fireplace if the glass is broken.
Replace any glass that is chipped, cracked, or broken. Replacement glass door assemblies MUST
be supplied by the fireplace manufacturer ­– No substitute materials may be used.
Handle glass door with care to avoid striking or scratching it on hard objects.

To clean glass door, follow “Glass Removal” procedure outlined in the Final Installation section. Film
deposit on the inside of the glass should be cleaned off using a nontoxic, non-corrosive, non-abrasive,
mild-cleaning solution. Simply apply an adequate amount to the glass and wipe off with a damp cloth.
After all maintenance has been completed, re-install glass door.

StonesIf stones must be removed for cleaning, handle carefully by holding gently at each end. Gloves are recommended to prevent skin irritation from ceramic fibers. If skin becomes irritated, wash gently with soap
and water. Vacuum surface of stones with brush attachment or brush logs with a soft bristly (i.e. clean,
dry paintbrush). To place stones in the fireplace, refer to Stone Placement section on Page 30.
NOTE: Do not use fluids to clean ceramic fiber stones.

50

20303735

troubleshooting

VWDV70 Series Gas Fireplace

SIGNATURE COMMAND SYSTEMOPERATION

Install batteries and/or
plug in the AC board

FAULT

No beep in about
8 seconds

A

Using
battery?
Make sure
CommandCenter andthe control
board areconnected bya 2 feet or 15
feet cable

After the beep

Flip the master switch(rocker switch) to the
ON position

Press the ON button on
the Command CenterNo beep
orno sound from thevalve indicating pilotsolenoid open

ACTIONDIAGNOSIS

B

Battery polarity wrong?

Re-install batteries

Battery voltage low?

Change batteries

AC plug is plugged to
AC mains?

Plug the AC plug to
AC mains

The 5-pin connector on
the AC board broken or
bent?

Repair or replace the
AC Board

LED on the CommandCenter does not showsolid green?

Replace the AC Board

Check NG/LP
conversion cap
and control
board
connections

Check valve
connections

Check power
supply (gothrough A )Replace the Control
Board orCommand Center

Checkgrounding

No sparking on
the pilot

C

Check pilot
connections

Go throughB

Sparking is happening
elsewhere (under thepilot), re-install/replace
the pilot

Sparking doesn’t
continue

D

The Control Board is having interference from thesurrounding metal (Ground)

Re-install the Control
Board, move it aroundor change theControl Board

Pilot doesn’t light

Main burner doesn’t
light

E

F

Check gas supply

Go through E

Go through C

The sensor on the pilot
is not in the flame(pilot flame too small)?

Sparking is not in thepath of gas flow, adjust
sparker position or
replace the pilot
Adjust sensor position
or replace the pilot

FP1911troubleshoot sc
8/08

20303735

51

REPLACEMENT PARTSVWDV70 Series Gas Fireplace
FIREBOX COMPONENTS AND ACCESSORIES
2

1

3

5

8d
8a
8b

8c
6
7
8e
	Ref.
Description	Qty.
1.
Bulb (35 Watt)82.
Bulb Socket
8
3.
Glass Frame Assembly1
4.
Junction Box Assembly (not shown)
1
5.
Wire (Lighting)1
6.
Lightwire Junction Box w/Cover
2
7.
Wire Nut
3735 10
Accessories / Field Installed
VWDV70 firebox parts
8.
Porcelain Panel Kit Black (complete)
1
8a.
Porcelain Panel Black - Rear Left1
8b.
Porcelain Panel Black - Rear Middle
18c.
Porcelain Panel Black - Rear Right1
8d.
Porcelain Panel Black - Left1
8e.
Porcelain Panel Black - Right
1
8.
Porcelain Panel Kit Bronze (complete)
1
8a.
Porcelain Panel Bronze - Rear Left1
8b.
Porcelain Panel Bronze - Rear Middle
18c.
Porcelain Panel Bronze - Rear Right1
8d.
Porcelain Panel Bronze - Left1
8e.
Porcelain Panel Bronze - Right
1
9.
Log Set (not shown)
1
10.
Trim Kit (not shown)
152

VWDV70
78D0007
73D4521K
20303344
26D212820303729
20303352
20302355
VWDV70PB
20303704
20303705
20303706
20303703
20303702
VWDV70PBZ
20303709
20303710
20303711
20303708
20303707
LKW70
VWDV70TKB

20303735

REPLACEMENT PARTSVWDV70 Series Gas Fireplace

SIGNATURE COMMAND SYSTEM & ENGINE
5

3
2

20

4

18

5

19
15
6

5

18
15

8

19
7

5
8

17
15

21

9
8
26

10

11a

21

9

14
9

29

12
13

11b

10

27

21

23

22
10

11c

33
32

24

31
25

16

30

3735
VWDV70 engine parts

20303735

53

REPLACEMENT PARTSVWDV70 Series Gas Fireplace
SIGNATURE COMMAND SYSTEM & ENGINE
Item

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11a.
11b.
11c.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.

Description	Qty.

Base Engine
Gasket, Engine Base
Gasket, Access Panel
Assy, BurnerSupport, Burner
Bracket, Tube Support
Pilot Assy
Venturi, Gasket
Venturi w/Screw, No air shutter
Air Shutter
Injector #44
Injector #43
Injector #45
Elbow - Street 3/8" x 3/8" 90°
Valve
Flexline, 18" w/Shutoff Valve
GrommetFitting 3/8 NPT x 3/8 Brass MaleTube, Valve to T
Tube, Straight
Brass Tee, 3/8" Comp.
Brass 90° Elbow, 3/8" Comp.
Flexline, 3/8" Comp.
Gasket, Valve Bracket
Bracket, Valve
Control Board NG
AC Module SCS
Wall Cover for C/C
Wall Junction Box
Cable, Wall Switch, 15 ft. (not shown)
Top Noncombustible Board
Bottom Noncombustible Board
Hearth Glass
Command Center
Remote Transmitter

Fuel Conversion Kit
Natural Gas to LP

54

1
1
1
1
4
1
1
3
3
3
1
1
1
1
1
1
4
1
1
2
2
1
3
1
1
1
1
1
1
1
1
1
3
1
1

VWDV70NTSC

20302845K
20302866
20302867
20303226
20303233
20303730
80D0006
45D0032
69D1026
69D102720303805
20303806
20303804
0069882
80D0001
69D0030
73D018902566020302884K
20302885K
20303648
20301832
20303323
20302462
20302967K
80D0018
80D0004
80D0022
20H2080
80D001120303649
20303651
20302895
80D1005
TSFSC

20303736K

20303735

REPLACEMENT PARTSVWDV70 Series Gas Fireplace

GLASS
Ref.
Description	Qty.	Part No.
1.
Glass Set, Onyx
3
GKO
2.
Glass Set, Diamond
3
GKD
STONES
1.
Stone M Black
620303041K
2.
Stone M Sand
620303042K
3.
Stone M White
620303043K
4.
Stone M Dark Gray
620303044K
5.
Stone White4
78D0136K
6.
Stone Sand
4
78D0140K
7.
Stone Dark Gray
4
78D0138K
8.
Stone Brown
4
78D0139K
9.
4-Stone Assembly
120303995K
10.
Stone L Black1
20303037K
11.
Stone L Sand
120303038K
12.
Stone L White1
20303039K
13.
Stone L Dark Gray
120303040K

20303735

55

VENTING COMPONENTSVWDV70 Series Gas Fireplace
VENT COMPONENTS FOR 5" X 8"
1

2

3

4

HO

T
10

5

6

9

7

8

				Current	Old
				Simpson	Simpson
				
Duravent
Duravent		Qty./		
or MHSC	
or MHSC	Selkirk
Metal-Fab
Item Box Description	Part no.	Part no.	Part no.	Part no.
1
1
Horizontal High Wind Termination Cap
58DVA-HC
1285
5DT-HC-1
1
Horizontal Termination Cap Built-In Vinyl Siding Standoff,		
BHS8TK		--					
Heat Deflector, Firestop, 90° Elbow and Adjustable 						
			Pipe 11" to 145/8"
1
1
Horizontal Termination Cap w/Built-In Vinyl Siding Standoff,		
BHSF8TKA		--					Heat Deflector, Firestop, Flexible Pipe 20" to 48", Adapter
1
8
Horizontal Termination w/ 1" Firestop		
BHRST/8
1
1
Horizontal Temination Cap				
5DHT730024KHLDV vent parts
2
1
Vertical Termination
58DVA-VC
1280
5DT-VC
5DVT
3
46" Pipe Length
58DVA-06
1208
5DT-065D6
3
4
9" Pipe Length
58DVA-09
1207
5DT-093
4
12" Pipe Length
58DVA-121206
5DT-12
5D12
3
424" Pipe Length
58DVA-24
1204
5DT-245D24
3
436" Pipe Length
58DVA-36
1203
5DT-36
5D36
3
448" Pipe Length
58DVA-48
1202
5DT-48
5D48
4
4
81/2" Pipe Extension
58DVA-08A-5DT-AJ
4
4
16" Pipe Extension
58DVA-16A--5445° Elbow
58DVA-E45
1245
5DT-EL455D456
5445° Swivel Elbow--5DT-EL45
6490° Elbow
58DVA-E90
1290
5DT-EL90S
5D906
6490° Swivel Elbow-1290G
5DT-EL90S
76Flashing, 0/12 to 6/12 Roof Pitch
58DVA-F6
1243
5DT-AF6
5DF
7		
Steep Roof Flashing
58DVA-F12
1243S
-8
6
Storm Collar
58DVA-SC
1253
5DT-SC
5DSC
9
4Firestop
58DVA-FS
1263
5DT-FS
5DFS
9		1" Firestop
58DVA-FS-10
1Vinyl Siding Standoff
58DVA-VSS
1250
5DT-VS
5DVS
11		
Attic Insulation Shield (not shown)
58DVA-IS--128Flex Adapter Starter (not shown)
DVFF8A/8---

NOTE: Vertical Termination 1283 must not be used with this unit.
5620303735

VWDV70 Series Gas Fireplace20303735

57

Requirements
for Fireplace
the Commonwealth of
VWDV70 Series Gas
MassachusettsThis product must be installed by a licensed plumber orgas fitter when installed within the Commonwealth of
Massachusetts.

Note Regarding Vented Products
Flex line installation must not exceed 36 inches and musthave a T shutoff valve.
Any residence with a direct vent product must have a CO
detector installed in the residence.
Installation of the fireplace or vented gas log in the Stateof Massachusetts requires the damper to be permanently
removed or welded in the fully open position.
In addition, neither a naturally vented gas log nor a vent-free
product may be installed in a bedroom or bathroom in theState of Massachusetts.
All gas fitting and installation of this heater shall only be done
by a licensed gas fitter or licensed plumber.
For all side wall horizontally vented gas fueled equipment
installed in every dwelling, building or structure used in whole
or in part for residential purposes, including those owned or
operated by the Commonwealth and where the side wall
exhaust vent termination is less than seven (7) feet above
finished grade in the area of the venting, including but notlimited to decks and porches, the following requirements
shall be satisfied:

Installation of Carbon Monoxide Detectors
At the time of installation of the side wall horizontal vented
gas fueled equipment, the installing plumber or gas fitter shallobserve that a hard wired carbon monoxide detector with analarm is installed on each additional level of the dwelling,building or structure served by the side wall horizontal
vented gas fueled equipment. It shall be the responsibilityof the property owner to secure the services of qualified
licensed professionals for the installation of hard wired carbon
monoxide detectors.
In the event that the side wall horizontally vented gas fueled
equipment is installed in a crawl space or an attic, the hard
wired carbon monoxide detector with alarm and battery backup may be installed on the next adjacent floor level.
In the event that the requirements of this subdivision can not
be met at the time of completion of installation, the owner shallhave a period of thirty (30) days to comply with the above
requirements; provided, however, that during said thirty (30)day period, a battery operated carbon monoxide detector withan alarm shall be installed.

Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accordancewith the above provisions shall comply with NFPA 720 and
ANSI/UL 2034 listed and IAS certified.
58

Signage
A metal or plastic identification plate shall be permanently
mounted to the exterior of the building at a minimum heightof eight (8) feet above grade directly in line with the exhaustvent terminal for the horizontally vented gas fueled heating
appliance or equipment. The sign shall read, in print size noless than one-half (1/2) inch in size, “GAS VENT DIRECTLY
BELOW, KEEP CLEAR OF ALL OBSTRUCTIONS”.

Inspection

The state or local gas inspector of the side wall horizontally
vented gas fueled equipment shall not approve the installation
unless, upon inspection, the inspector observes carbon
monoxide detectors and signage installed in accordance withthe provisions of 248 CMR 5.08(2)(a)1 through 4.

Exemptions
The following equipment is exempt from 248 CMR 5.08(2)(a)1
through 4:• The equipment listed in Chapter 10 entitled “Equipment
Not Required To Be Vented” in the most current edition of
NFPA 54 as adopted by the Board; and• Product Approved side wall horizontally vented gas fueled
equipment installed in a room or structure separate fromthe dwelling, building or structure used in whole or in partfor residential purposes.

MANUFACTURER REQUIREMENTS

Gas Equipment Venting System Provided
When the manufacturer of Product Approved side wall
horizontally vented gas equipment provides a venting systemdesign or venting system components with the equipment, theinstructions provided by the manufacturer for installation of
the equipment and the venting system shall include:• Detailed instructions for the installation of the venting
system design or the venting system components; and• A complete parts list for the venting system design or
venting system.
Gas Equipment Venting System NOT Provided
When the manufacturer of a Product Approved side wall
horizontally vented gas fueled equipment does not provide
the parts for venting the flue gases, but identifies “special
venting systems”, the following requirements shall be satisfied
by the manufacturer:• The referenced “special venting system” instructions shallbe included with the appliance or equipment installation
instructions; and• The “special venting systems” shall be Product Approvedby the Board, and the instructions for that system shall
include a parts list and detailed installation instructions.
A copy of all installation instructions for all Product Approved
side wall horizontally vented gas fueled equipment, all venting
instructions, all parts lists for venting instructions, and/or all
venting design instructions shall remain with the appliance orequipment at the completion of the installation.
20303735

VWDV70 Series Gas Fireplace

Limited lifetime warranty
Lifetime Warranty

The following components are warranted for the lifetime of the product, subject to proof of purchase:
Firebox, Combustion Chamber, Heat Exchanger, Grate, Steel Burners, Glass (thermal breakage only),
Ceramic Fiber Logs and Refractory Brick. Coverage is provided only to the original purchaser and isnontransferable. MHSC will also pay for reasonable labor costs associated with repairing or replacing thecomponent described above for up to five (5) years. Labor rates will be determined by MHSC's publishedlabor rates in effect at the time labor is performed.

Basic Warranty
MHSC warrants the components and materials in your gas appliance to be free from manufacturing andmaterial defects for a period of two years from date of installation. After installation, if any of the components
manufactured by MHSC in the appliance are found to be defective in materials or workmanship, MHSC
will, at its option, replace or repair the defective components at no charge to the original owner. MHSC
will also pay for reasonable labor costs incurred in replacing or repairing such components for a periodof two years from date of installation. Any products presented for warranty repair must be accompanied
by a dated proof of purchase.
This Limited Lifetime Warranty will be void if the appliance is not installed by a qualified installer in accordance with the installation instructions. The Limited Lifetime Warranty will also be void if the applianceis not operated and maintained according to the operating instructions supplied with the appliance, anddoes not extend to (1) firebox/burner assembly damage by accident, neglect, misuse, abuse, alterations,
negligence of others, including the installation thereof by unqualified installers, (2) the costs of removal,
reinstallation or transportation of defective parts on the appliance, or (3) incidental or consequential damage. All service work must be performed by a Vermont Castings Authorized Dealer.
This warranty is expressly in lieu of other warranties, express or implied, including the warranty of merchantability of fitness for purpose and of all other obligations or liabilities. MHSC does not assume forit any other obligations or liabilities in connection with sale or use of the appliance. In states that do notallow limitations on how long an implied warranty lasts, or do not allow exclusion of indirect damage,those limitations of exclusions may not apply to you. You may also have additional rights not covered in
the Limited Lifetime Warranty.
MHSC reserves the right to investigate any and all the claims against the Limited Lifetime Warranty anddecide upon method of settlement.

IF WARRANTY SERVICE IS NEEDED...
1. Contact your supplier. Make sure you have your warranty, your sales receipt and themodel/serial number of your MHSC product.
2. DO NOT ATTEMPT TO DO ANY SERVICE WORK YOURSELF.

20303735

59Based on CSA P.4.1-09

Efficiency Ratings
Model	EnerGuide Ratings		Fireplace Efficiency (%)
VWDV70NTSC
79.3
VWDV70PTSC
79.8*

DOE		
(AFUE %)
71.4
77.5*

*After conversion toLP.
Recherchez
dans la brochureles caractéristique de rendementénergétique de foyer au gaz
Énerguide
Based
CSA
P.4.1-09
SelononCSA
P.4.1-09

MHSC

149 Cleveland Drive • Paris, Kentucky 40361
www.mhsc.com