\* \* \* \* \* \* \* \* \* \*

READ AND **REMOVE THIS PAGE** BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

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[DIVISION 15: MECHANICAL]{.underline}

SECTION 15840 ‑ TERMINAL HEAT TRANSFER UNITS

USE: Furnishing and installing radiation convectors or unit heaters for
the building heating systems and fan-coil units for heating and cooling.

**NOTES TO SPECIFIER:**

A. Options within paragraphs are identified by enclosure in brackets;
blank spaces enclosed by brackets \[\_\_\_\_\_\] provide for information
to be inserted, as appropriate, to individual projects.

B. **TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES,** the
specifier must edit (delete, substitute or add to the text). The
remaining paragraphs must be renumbered.

C. DELETE FOR FINAL COPY: Notes to the Specifier, located between lines
of asterisks; all \[brackets\], [underlining]{.underline}, **boldface**,
and *italics*, within the paragraphs; and this page. (Open Reveal Codes
\[alt F3\] to do this accurately.)

D. [To Edit "(Footer B)":]{.underline} (Corel 8). **ENTIRE FOOTER SHOULD
BE BOLDED.** Click in the footer and delete the "Project Name (ftr B)"
text and replace it with the **Name of the Project (upper and lower
case)**. Replace date with current MM/YY (WITHOUT BRACKETS).

E. The Guide Specifications are intended to be continuously reviewed and
revised. User's technical comments are appreciated. Also, other related
or similar specification that are written "from scratch" that could
benefit others, or other questions can be sent to NSTC A/E Group, ST
110, or call (303) 987-6868.

**DRAWING DATA REQUIRED:** Location and detail drawings as needed.:

**REQUIRED SPEC MODIFICATIONS:**

[GENERAL NOTES]{.underline}

A. Whenever entire articles, paragraphs or subparagraphs are not
applicable, the articles, paragraphs or subparagraphs should be deleted;
when necessary, reletter or renumber articles, paragraphs or
subparagraphs.

B. THIS GUIDE IS NOT INTENDED AS A SUBSTITUTE FOR READING THE ENTIRE
SECTION.

[TECHNICAL NOTES]{.underline}

A. 1.1A: Select applicable words.

B. 1.1B: Select or add applicable specification sections. Do not list
specification sections from Division 15.

C. 1.2: Select or add applicable references.

D. 1.3A: Select applicable words.

E. 1.4B: Insert number of copies of the manufacturer\'s descriptive data
required. Normally 5 copies are required. Distribution after review is
normally 1 copy to the COR, 3 copies to the Contractor, and 1 copy to
the project file.

F. 1.4C: Insert number of copies of the manufacturer\'s installation
instructions required. Normally 5 copies are required. Distribution
after review is normally 1 copy to the COR\< 3 copies to the Contractor,
and 1 copy to the project file.

G. 1.4D: Insert number of copies of the manufacturer\'s maintenance
instructions required. Normally 5 copies are required. Distribution
after review is normally 1 copy to the COR, 3 copies to the Contractor,
and 1 copy to the project file.

H. 1.4E: Insert number of copies of shop drawings required. Normally 5
copies are required. Distribution after review is normally 1 copy to the
COR, 3 copies to the Contractor, and 1 copy to the project file.

I. 2.1A1: Select applicable diameter of tubing.

J. 2.1B1: Select applicable diameter of tubing.

K. 2.1E1: Select applicable phrase.

L. 2.1F1: Select applicable phrase.

M. 2.1F5: Select material for intake box and louvers.

N. 2.1F6: Select applicable phrase.

O. 3.2C: Select applicable phrase.

P. 3.4A: Complete desired characteristics.

Q. 4.1 and 4.2: When a \"lump sum\" Contract is used, delete the title
PART 4: MEASUREMENT AND PAYMENT, and both articles from this section.
Measurement and payment will be addressed in Part 4 of Section 01010
-Summary of Work.

**REVISIONS OF THIS SECTION:**

CSI format, editorial changes: 12/01

Metric:

Technical Update: 01/91

SECTION 15840

TERMINAL HEAT TRANSFER UNITS

[PART 1: GENERAL]{.underline}

1.1 SUMMARY:

A. Section Includes: Furnishing and installing \[baseboard\] \[wall
fin\] radiation \[convectors\] \[unit heaters\] for the building heating
system \[and\] \[fan‑coil units\] \[unit ventilators\] \[for the
buildings\'s heating and cooling system\].

1.2 REFERENCES:

A. American Society of Heating, Refrigeration, and Air Conditioning
Engineers:

ASHRAE 71‑73 Rating Unit Ventilators, Method of Testing

ASHRAE 79‑84 Rating Room Fan‑Coil Air Conditioners, Method of Testing

1.3 SYSTEM DESCRIPTION:

A. System Includes: \[Baseboard\] \[wall fin\] radiation \[connectors\]
\[unit heaters\] supplied with hot water and the \[fan‑coil units\]
\[unit ventilators\] supplied with \[hot water\] \[chilled water\]
through a \[2‑pipe\] \[4‑pipe\] system. Units satisfy room thermostat
setting through heat radiation \[or by blowing air across \[heating\]
\[cooling\] coils\].

1.4 SUBMITTALS:

A. General: Submittals shall be according to Section 01300 - Submittals.

B. Manufacturer\'s Literature: Submit \[\_\_\_\_\] copies of the
manufacturer\'s descriptive data for each unit scheduled to be used on
this project.

C. Installation Instructions: Submit \[\_\_\_\_\] copies of the
manufacturer\'s installation instructions for each unit to be used on
this project.

D. Operating and Maintenance Instructions: Submit \[\_\_\_\_\] copies of
the manufacturer\'s operating and maintenance instructions for each unit
scheduled to be used on this project.

E. Shop Drawings: Submit \[\_\_\_\_\] copies of shop drawings for each
unit scheduled to be used on this project. \[Shop drawings shall show
the type and capacity of each unit scheduled.\] Drawings shall be
\[same\] \[larger\] scale as the full size Contract Drawings.

1.5 QUALITY ASSURANCE:

A. Manufacturer Qualifications: A company regularly engaged in the
manufacture of terminal heat transfer units and who issue\'s a complete
catalog of data on such products. The manufacturer shall have parts and
service available to commence correction of the deficiency, within
\[\_\_\_\_\] hours after verbal notification by the Contracting Officer,
through factory representatives, franchised dealers, or factory
certified maintenance service shops.

1.6 MAINTENANCE:

A. Filters: Furnish the Contracting Officer with \[\_\_\_\_\] sets of
spare filters for each unit installed.

[PART 2: PRODUCTS]{.underline}

2.1 MATERIALS:

A. Baseboard Radiation:

1\. Heating Elements: Shall be \[5/8\] \[3/4\] inch I.D. copper tubing
mechanically expanded into flanged collars of evenly spaced aluminum
fins, one tube end belled.

2\. Enclosure: Shall be minimum gauge steel with back and top of one
piece, front panel, end caps, corners, and jointer pieces to snap
together and front panel easily removable. Provide full length damper.

B. Wall Fin Radiation:

1\. Heating Elements: Shall be \[1 1/4\] \[1 1/2\] inch I.D. seamless
copper tubing, 0.042 inches minimum wall thickness, mechanically
expanded into evenly spaced aluminum fins, suitable for soldered
fittings.

2\. Element Hangars: Shall be quiet operating, ball bearing cradle type
providing unrestricted longitudinal movement, on enclosure brackets.

3\. Enclosures: Shall be 18‑gauge steel up to 18 inches in height, 16
gauge steel over 18 inches in height. Provide easily jointed components
for wall to wall installation. Support rigidly, top and bottom, on
wall‑mounted brackets at 3 ft centers, maximum.

C. Convectors:

1\. Heating Elements: Shall be seamless copper tubing mechanically
expanded into evenly spaced aluminum fins and cast iron headers, steel
side plates and supports, factory air pressure tested at 100 psi under
water, and means of adjusting pitch of element.

2\. Cabinet: Shall be 16‑gauge steel front and top, 18‑gauge steel back
and ends, exposed corners rounded, easily secured removable front
panels, adequately braced and reinforced for stiffness.

D. Unit Heaters:

1\. Casing: Shall be 18-gauge steel with threaded connections for hanger
rods.

2\. Coils: Shall be seamless copper tubing, 0.025 inch minimum wall
thickness, silver brazed to steel headers, and with evenly spaced
aluminum fins mechanically bonded to tubing.

3\. Fan: Shall be direct drive propeller type, statically and
dynamically balanced. Horizontal models complete with sleeve bearings
and fan guard. Vertical models complete with grease lubricated ball
bearings.

4\. Air Outlet: Shall be adjustable pattern diffuser on projection
models and four‑way louvers on horizontal throw models.

E. Fan‑Coil Units:

1\. Cabinet: Shall be 16‑gauge steel with exposed corners and edges
rounded, easily removed panels, glass fiber insulation \[,\] \[and
integral air outlet\] \[and air inlet grilles.\] \[Finish exposed
surfaces in baked enamel.\]

2\. Coils: Shall be evenly spaced aluminum fins mechanically bonded to
copper tubes, designed for 200 psi and 220 degrees F.

3\. Fans: Centrifugal with forward‑curved, double‑width wheels,
statically and dynamically balanced, direct driven, on sleeve bearings.
Resiliently mounted.

4\. Filter: Easily removed 1‑inch thick glass fiber throw‑away or
permanent washable type, filtering air before coil.

5\. Control: \[Four position speed switch, factory wired\] \[Two
position speed switch in cabinet where accessible\]. Provide
key‑operated wall‑mounted switch where inaccessible.

F. Unit Ventilators:

1\. Cabinet: Shall be 14‑gauge steel on solid base pan with exposed
edges rounded. Provide removable front panels with quick‑acting,
key‑operated camlocks. Finish external surfaces in baked enamel. Provide
removable die‑cast or fabricated steel discharge grilles. \[Units having
cooling coils: insulate internal parts and surfaces exposed to
conditioned air stream with moisture‑resistant insulation.\]

2\. Fans: Shall be centrifugal with forward‑curved, double‑width wheels,
statically and dynamically balanced, direct driven, on sleeve bearings,
resiliently‑mounted. Arrange to draw air through coil. Manually control
motor by key‑operated on‑off switch.

3\. Mixing Dampers: Shall be multi‑blade with compressible seal. Capable
of varying proportion of mixed air from 100% room air to 100% outside
air.

4\. Filters: Shall be easily removed 1‑inch thick glass fiber throw‑away
or permanent washable types, filtering air before unit coil.

5\. Outside Air Intake: Shall be \[Anodized aluminum\] \[Steel\] wall
intake box and louvers removable from frame with 1/2‑inch square mesh
galvanized screen in back of louver.

6\. Coils: Shall be copper tubes mechanically expanded into evenly
spaced aluminum fins tested to operate at 150 psi. \[Install 16‑gauge
galvanized steel drain pan under cooling coil, easily removable for
cleaning and provided with drain connection.\]

PART 3: EXECUTION

3.1 INSTALLATION:

A. General: Install units according to the manufacturer\'s
recommendations. Equipment configuration and locations shall be as shown
on the drawings. Provide each unit with shut‑off valve on supply and a
lockshield balancing valve on return piping. Provide float‑operated
automatic air vents with stop valve.

3.2 ADJUSTING:

A. Lubrication: Each unit shall be lubricated according to the
manufacturer\'s specifications.

B. Filters: Shall be placed in each unit prior to starting unit.

C. Thermostats: Each thermostat shall control its associated unit
\[on‑off positions\] \[heat‑cool position\] \[four‑speed\] \[two‑speed\]
fans.

3.3 DEMONSTRATION:

A. Requirements: Upon completion of installation and after circuitry has
been energized, the Contractor shall demonstrate capability and
compliance of system with requirements. Malfunctioning units shall be
corrected and retested by the Contractor to demonstrate compliance with
the specifications.

3.4 SCHEDULES:

A. Terminal Unit Schedule: Listed below is a schedule of the units with
the physical and operating characteristics of each:

Type:

Unit No.:

Location:

Service:

BTU/Ft:

GPM:

Motor RPM:

Motor Hp:

Remarks:

3.5 TRAINING OF GOVERNMENT EMPLOYEES:

A. Requirements: See Section 01700 - Contract Closeout.

[PART 4: MEASUREMENT AND PAYMENT]{.underline}

4.1 METHOD OF MEASUREMENT:

A. Units: The work described in this section will not be measured for
payment.

4.2 BASIS OF PAYMENT:

A. Payment: No direct payment for the work described under this section
will be made. The Contractor shall include consideration for this item
in the bid price for other items of the Contract.

END OF SECTION