July 22, 1994

Contract \# TW0592

**SPECIAL SPECIFICATION**

**SECTION 15492**

**[LABORATORY FUME HOODS]{.underline}**

[Page]{.underline}

**[PART 1 - GENERAL]{.underline}**

1.01 Description. 2

1.02 Related Work. 2

1.03 Quality Assurance. 2

1.04 References.. 2

1.05 Submittals. 3

1.06 Delivery, Storage, and Handling. 3

1.07 Project/Site Conditions. 4

**[PART 2 - PRODUCTS]{.underline}**

2.01 Acceptable Manufacturers. 5

2.02 Equipment 5

**[PART 3 - EXECUTION]{.underline}**

3.01 Inspection.. 8

3.02 Installation/Application/Erection. 8

3.03 Field Quality Control. 8

3.04 Adjusting and Cleaning. 9

3.05 Commissioning.. 9

3.06 Demonstration.. 9

**SPECIAL SPECIFICATION**

**SECTION 15492**

**[LABORATORY FUME HOODS]{.underline}**

**[PART 1 - GENERAL]{.underline}**

**1.01 [DESCRIPTION]{.underline}**

> A. This Section covers requirements for providing bypass type fume
> hoods with pre-piped and pre-wired connections.

**1.02 [RELATED WORK]{.underline}**

> A. Section 01300
>
> B. Section 15010
>
> C. Section 15892
>
> D. Section 15994
>
> E. Section 15995

**1.03 [QUALITY ASSURANCE]{.underline}**

> A. Certify the fume hood performance according to American National
> Standards Institute (ANSI)/American Society of Heating, Refrigerating,
> and Air-Conditioning Engineers (ASHRAE) 110 criteria.

**1.04 [REFERENCES]{.underline}**

> A. ANSI/ASHRAE 110
>
> B. National Fire Protection Association (NFPA) 70, National Electrical
> Code (NEC).

**1.05 [SUBMITTALS]{.underline}**

> A. Make submittals according to this Section, Section 15010, and
> Section 1300.
>
> B. Product data for each fume hood:
>
> 1\. Unit design requirements.
>
> 2\. Unit features.
>
> 3\. Weights (shipping, installed, and operating).
>
> 4\. Furnished accessories.
>
> 5\. Installation and start-up instructions.
>
> C. Shop drawings detailing fabrication and installation of fume hood
> including plans, elevations, sections, component details, attachments,
> color finishes, and other construction elements. Include the
> following:
>
> 1\. Dimensions.
>
> 2\. Weight loadings and distribution.
>
> 3\. Clearances for maintenance and operation.
>
> 4\. Size and location of field connections.
>
> D. Wiring diagrams detailing power and control wiring. Differentiate
> clearly between manufacturer-installed wiring and field-installed
> wiring.
>
> E. Maintenance data for each fume hood.
>
> F. Certification of performance from the factory.
>
> G. Certification letter from manufacturer stating that the fume hood
> has been through start-up procedures and that it is functioning
> properly.

**1.06 [DELIVERY, STORAGE, AND HANDLING]{.underline}**

> A. See Section 15010.
>
> B. Protect fume hoods from damage by factory packing.
>
> C. Reject any damaged fume hoods upon arrival.
>
> D. Store fume hoods to prevent damage, and protect from weather, dirt,
> fumes, water, and construction debris. Provide a clean dry space if
> available.
>
> E. Handle fume hoods according to the manufacturer\'s rigging and
> installation instructions for unloading and transporting into the
> final location.

**1.07 [PROJECT/SITE CONDITIONS]{.underline}**

> A. Coordinate layout and installation of the fume hoods with the
> piping system and exhaust ductwork. Revise locations to suit field
> conditions and as approved by the Architect/Engineer (A/E).
>
> B. Coordinate installation with laboratory furniture installation.

**[PART 2 - PRODUCTS]{.underline}**

**2.01 [ACCEPTABLE MANUFACTURERS]{.underline}**

> A. Hamilton Scientific, Inc. or approved substitute

**2.02 [EQUIPMENT]{.underline}**

> A. General
>
> 1\. Provide bypass type fume hood with a cabinet or table and
> structure as indicated in Tables 1 and 2.
>
> 2\. Provide features as indicated in Tables 1 and 2.
>
> B. Physical Characteristics
>
> 1\. Provide double end walls for the superstructure with the front of
> the panel at the hood opening chamfered to provide a streamlined hood
> air entrance. Provide hood interior end panels flush with the entrance
> shape. Enclose the area between the double wall ends to house the
> required sash counter-balance weight, duplex receptacles, wiring, and
> remote service valves.
>
> 2\. Provide an automatic air bypass sash opening which is dependent on
> mechanical and electrical linkage. Design the air bypass to pass 20
> percent or more of the flow rate when the hood sash is closed.
>
> 3\. Provide a removable baffle with a fixed open center slot and
> adjustable openings at top and bottom. Locate the baffle at the rear
> of the hood for adjustment of air flow due to types of gases.
>
> 4\. Provide minimum 16-gage (ga.) metal; use 304 or 316 stainless
> steel where stainless steel is identified.
>
> 5\. Provide pre-piped and labeled piping connections, so all
> connections are made exterior to the fume hood. Provide pre-wired
> power connections with a pre-wired, 3-prong, 8-ft. long, power cord.
>
> 6\. Construct the fume hood exterior of cold rolled steel component
> parts screwed together to allow for removal of the end panels, front
> and facia pieces, top facia and air foil strips for maintenance.
> Provide eight foot wide fume hoods that have a vertical sash movement
> with either a double sash and a center post or a single sash and a
> reinforced opening frame. Provide all component parts with an acid,
> alkali, and solvent resistant finish on both exterior and interior
> surfaces after fabrication of all cold-rolled steel parts and prior to
> final assembly. Provide approved finish color.
>
> 7\. Provide at the top of the hood a fluorescent or incandescent light
> fixture as indicated in Table 2. Provide a fixture shielded from the
> hood interior by a tempered glass panel sealed to the hood by an
> extruded vinyl channel. Provide electronic ballasts and T-8 lamps for
> fluorescent fixtures.
>
> 8\. Provide a sash for the hood. Provide 7/32 to 9/32-inch (in.)
> laminated safety glass or 1/4-in. transparent lexan for the sash as
> indicated in Table 1. Construct the sash of an 18 gauge painted steel
> rolled shape, 3/4-in. thick by  2 1/2-in. wide, which is mitered,
> welded, and ground smooth at the corners to provide a complete frame
> with no visible joints. Use internal interlocked, rigid, vinyl
> extrusions with the outer member, sealing and retaining the glass.
>
> a\. Counterbalance up/down moving sashes with a weight and sash cable
> system to prevent any tilting of the sash during operation. Do not use
> spring type counterbalances. Use stainless steel sash cables operating
> on ball bearing sheaves. Provide replaceable plastic guides for the
> sash frames, which operate in stainless steel sash guides to prevent
> metal-to-metal contact.
>
> b Provide ball-bearing rollers and guides for the left/right moving
> sashes. Use stainless steel for the roller construction. Use
> replaceable plastic inserts in the stainless steel guides to prevent
> metal-to-metal contact.
>
> 9\. Construct the fume hoods to permit passage through a 3-foot by
> 7-foot personnel door.
>
> 10\. Design the fume hood for exhaust duct connection at the top.
>
> 11\. Interior Surface Construction
>
> a\. Provide fume hood interior materials as indicated in Table 1. Weld
> stainless steel materials together. Triple weld polypropylene
> materials together. Provide gaskets to join dissimilar materials.
>
> b\. Provide a continuous curb for the working surface. Provide
> reinforced working surface capable of supporting 100 pounds per square
> foot without damage or warping.
>
> c\. For areas exposed to the fume hood interior, use stainless steel
> fasteners on removable parts.
>
> d\. Provide 14-ga. reinforced stainless steel for the work surface as
> indicated in Table 1.
>
> 12\. Features
>
> a\. Provide features as indicated in Table 2.
>
> b\. Provide oval cup sinks with a size of approximately 3 in. by 6
> in., unless notes otherwise. See Table 2.
>
> c\. Provide a neoprene gasket between the working surface and the
> sinks.
>
> 13\. Service Locations
>
> a\. See Table 1.
>
> b\. Locate the duplexes, remote baffle operator, remote valve
> operators, and light switches on the end walls (exterior to the fume
> hood sash). Replace duplexes with a power strip having equal number of
> outlets and same protection, if so desired.
>
> c\. Provide 3/8-in. service valves with remote serrated hose
> connection located in the fume hood interior side panels.
>
> 14\. Use only colors approved by SNL.

**[PART 3 - EXECUTION]{.underline}**

**3.01 [INSPECTION]{.underline}**

> A. Inspect areas and conditions, with Installer present, for
> compliance with requirements for installation tolerances, and other
> conditions affecting performance of the fume hoods.
>
> B. Inspect rough-in for utilities to verify actual locations of
> connections prior to installation.
>
> C. Do not proceed until unsatisfactory conditions have been corrected.

**3.02 [INSTALLATION/APPLICATION/ERECTION]{.underline}**

> A. General
>
> 1\. Install fume hoods level and plumb, in accordance with
> manufacturer\'s written instructions.
>
> 2\. Arrange installation of units to provide access space for service
> and maintenance.
>
> B. Connections
>
> 1\. Piping installation requirements are specified in other Division
> 15 sections. The Drawings indicate the general arrangement of piping,
> valves, fittings, and specialties.
>
> 2\. Duct installations and connections are specified in other Division
> 15 sections.
>
> 3\. Electrical Connections: The following requirements apply:
>
> a\. Electrical power wiring is specified in Division 16.
>
> b\. Connect unit components to ground in accordance with the National
> Electrical Code.

**3.03 [FIELD QUALITY CONTROL]{.underline}**

> A. Arrange and pay for a factory-authorized service representative to
> perform the following:
>
> 1\. Inspect the field assembly of components and installation of the
> fume hoods including piping, ductwork, and electrical connections.
>
> 2\. Prepare a written report on findings and recommended corrective
> actions.

**3.04 [ADJUSTING AND CLEANING]{.underline}**

> A. Adjust sashes for proper operation.
>
> B. Adjust baffle linkages for proper baffle operation.
>
> C. Clean unit fume hood interiors to remove foreign material and
> construction dirt and dust.

**3.05 [COMMISSIONING]{.underline}**

> A. Provide labor, material, equipment, etc., required to facilitate
> the commissioning process. Perform form tests and verification
> procedures required by the commissioning process when requested by the
> Commissioning Authority and directed by the General Contractor. See
> Section 15995.

**3.06 [DEMONSTRATION]{.underline}**

> A. Provide a factory-authorized service representative supervise
> start-up of equipment, to demonstrate operation, and to train
> personnel.
>
> B. See Section 15995.
>
> END OF SECTION

EXCEPT FOR ATTACHMENTS

FUME HOOD SPECIFICATION TABLES 1 & 2

**FUME**

**HOOD**

**SPECIFICATION**

**TABLE**

**1**

**Dimensions** **Construction** **Envelope** **Basis of Design**

**Equip.Room** **Material** **Seal**

**No.**

**FH-**

**ER =**

**epoxy**

**(chemical**

**resistant)**

**resin,**

**G = glass,**

**L = lexan,**

**PP =**

**polypropylene,**

**PVC = polyvinyl**

**chloride,**

**S = slate,**

**SS = stainless**

**steel**

**Hood** **Maximum** **Working** **Working** **Opening**
**InteriorSashWorkingEnvelope/** **Frame/Drain** **W =**

**Width** **Height** **Surface** **Surface** **Height** **Working**
**Surface** **Plenum** **Chassis** **Welded,**

**Feet** **Inches** **Height** **Depth** **Inches** **Height**
**C = Calked,**

**Inches** **Inches** **Inches** **G = Gasketed**

1 1405 4 90 36 30 30 44 L PP PP SS PVC W/G

2 1405 4 90 36 30 30 44 L PP PP SS PVC W/G

3 1206 6 90 36 30 30 44 G ER SS SS PVC W

4 1206 4 90 36 30 30 44 G ER SS SS PVC W

5 1104 4 90 36 30 30 44 G ER SS SS PVC W/G

6 1104 4 90 36 30 30 44 G ER SS SS PVC W/G

7 1104 4 90 36 30 30 44 G ER SS SS - W/G

8 1104 4 90 36 30 30 44 G ER SS SS - W/G

9 1109 6 90 36 30 30 44 G ER SS SS PVC W/G

10 1109 6 90 36 30 30 44 G ER SS SS PVC W/G

12 1706 5 90 36 30 30 44 G SS SS SS - W

15 2213 4 90 36 30 30 44 L ER PP SS - W/G

**FUME**

**HOOD**

**SPECIFICATION**

**TABLE 2**

**Features** **Service**

**Equip.** **Room** **Locations**

**No.**

**FH-**

**Sash Slides** **Base Cabinet** **Lighting** **Ar**
**FP = foot pedal operator,1 on**

**=** **LS = lightthe**

**(125** **argon,switch,left,**

**footcandles** **DI = deionizedN22L =**

**at the** **water,=** **2 on**

**work** **DPLX** **nitrogen,the**

**surface)** **=** **NG** **left,**

**120** **=** **etc.,**

**V,** **naturalR =**

**GFCI,gas,1 on**

**Duplex,NPW = non-the**

**NDPLXpotableright,**

**=** **water,2R =**

**120** **PCW = process2 on**

**V,** **coolingthe**

**Non-** **water, right,**

**GFCI,L** **etc.**

**Duplex,=**

**U/D** **Y** **D = DoorsF =FluorescentSinkDrainN2** **Ar**

**=** **=** **Dr = Drawers**

**Up** **Yes** **Ds = DoorsI =IncandescentY =**

**&** **Yes**

**or** **N** **Shelves**

**=** **S = Shelves** **N =**

**Down** **No** **No**

**L/R**

**=**

**Left**

**or**

**Right**

**NG** **DI** **NPW** **NPW** **PCW** **DPLX** **LS** 1 1405 U/D Y D F R
Y L

**FP**

\- - R - - - 2L L 2 1405 U/D Y D F R Y

L - - R - - - 2L L 3 1206 U/D Y D F R

Y L - - - R R - 2L L 4 1206 U/D Y D F

R Y L - - - R R - 2L L 5 1104 U/D Y D

F Note 1 Y L - R R R - - L L 6 1104 U/D Y

D F R,Note 2 Y L - R R R - - L L 7 1104 U/D

Y D F - N L - R R R - - L L 8 1104

U/D Y D F - N L - R R R - - L L 9

1109 U/D Y D I R Y L - R R R - - 2L L

10 1109 U/D Y D I R Y L - R R R - - 2L

L 12 1706 L/R Y D F - N - - - - - - -

6L L 15 2213 U/D Y Ds F - N L - - R - -

\- 3L L

Notes:

1\. Provide a sink for the entire work surface.

2\. Provide a 12-in. by 12-in. sink.