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

READ AND **REMOVE THIS PAGE** BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

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

[DIVISION 15: MECHANICAL]{.underline}

SECTION 15872 ‑ EXHAUST FANS

USE: Furnishing and installing exhaust fan systems.

**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: Complete description of system.

E. 1.4A: Select applicable specification section.

F. 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.

G. 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.

H. 1.4D: Insert number of copies of the manufacturer\'s operating and
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.

I. 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.

J. 1.4F: Insert number of copies of performance curves 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.

K. 1.4G: Insert number of copies of Certificates of Conformance
required. Normally 3 copies are required. Distribution after review is
normally 1 copy to the COR, 1 copy to the Contractor, and 1 copy to the
project file.

L. 2.1G: Select applicable words.

M. 2.1H: Select applicable words. Review whether to use paragraph G or H
or both

N. 2.1I.7: Select applicable words.

O. 2.1I.8: Determine if an explosion proof requirement exists and
include or delete as applicable.

P. 2.1J.2: Select applicable material.

Q. 3.1A.2: Select applicable words.

R. 3.4A: Delete or complete as required.

S. 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: 03/91

SECTION 15872

EXHAUST FANS

[PART 1: GENERAL]{.underline}

1.1 SUMMARY:

A. Section Includes: \[Furnishing\] \[and\] \[Installing\] exhaust fan
systems.

1.2 REFERENCES:

A. Air Movement and Control Association:

AMCA 210‑85 Laboratory Methods of Testing Fans for Rating

AMCA 300-85 Test Code for Sound Rating

B. Air Conditioning and Refrigeration Institute:

ARI 670‑85 Fans and Blowers

C. National Fire Protection Association:

NFPA 70‑90 National Electrical Code

NFPA 90A-89 Installation of Air Conditioning and Ventilating Systems

1.03 SYSTEM DESCRIPTION:

A. Requirements: Exhaust fans are to be installed in \[[
]{.underline}.\] Power roof ventilators are to be installed in \[[
]{.underline}.\]

1.4 SUBMITTALS:

A. General: Submittals shall be according to \[Section 01300 ‑
Submittals.\] \[and\] \[Section 01365 ‑ Certificates of Conformance.\]

B. Manufacturer\'s Literature: Submit \[[ ]{.underline}\] copies of the
manufacturer\'s descriptive data for the exhaust fans to be used on this
project.

C. Installation Instructions: Submit \[[ ]{.underline}\] copies of the
manufacturer\'s installation instructions for the exhaust fans to be
used on this project.

D. Operating and Maintenance Instructions: Submit \[[ ]{.underline}\]
copies of manufacturer\'s operating and maintenance instructions for the
exhaust fans to be used on this project.

E. Shop Drawings: Submit \[[ ]{.underline}\] copies of shop drawings for
the exhaust fans to be used on this project. Shop drawings shall show
physical dimensions, shaft sizes, drives, drive arrangement and motor
data. Drawings shall be \[same\] \[larger\] scale as the full size
Contract Drawings.

F. Performance Data: Submit \[[ ]{.underline}\] copies of performance
\[curves\] showing the performance characteristics of the exhaust fans
to be used on this project.

G. Certificates of Conformance: Submit \[[ ]{.underline}\] copies of
written certification from the supplier that the fan has been tested in
accordance with AMCA 300 and that the sound level does not exceed that
required on this project.

1.5 QUALITY ASSURANCE:

A. Labeling Requirements: Fans shall bear the Underwriters\'
Laboratories, Inc. (UL) label and the AMCA Certified Rating Seal. When
no standard is applicable, the manufacturer shall submit data to verify
the fan capacity at the specified operating conditions.

[PART 2: PRODUCTS]{.underline}

2.1 EQUIPMENT:

A. General: Provide equipment meeting the requirements shown on the fan
schedule in Part 3 of this section.

B. Automatic Shutdown: Provide fire safety switches of the thermostatic
type to de‑energize the fan if the exhaust air exceeds 130 degrees F for
fans of 2,000 cfm or greater.

C. Backdraft Dampers: Furnish each fan with backdraft dampers which may
be external or built‑in type. The damper shall be delicately balanced
and shall close when the fan stops. The blades are to be protected from
rattling and creating noise by specific noise reducing construction
features. Design features such as sound absorbent strips on damper
blades are acceptable.

D. Vibration Isolation: Provide fans with vibration isolation supports
or mounting. These may be integral in the fan construction or furnished
separately according to Section 15241 ‑ Vibration Isolation.

E. Electrical: Motors, when not furnished with the fans, shall be as
specified in Section 15170 - Motors. Magnetic starters when required,
shall be as specified in Division 16.

F. Finish: Aluminum fans and enclosures shall have either a baked‑enamel
finish or an anodized finish. Steel fans and enclosures shall have a
baked enamel finish.

G. Constructed Roof Curbs: When roof mounted fans or air outlets are
shown, \[curbs shall be as detailed on the drawings\] \[or\] \[curbs
shall be as shown in SMACNA Low Pressure Duct Construction Standards.\]

H. Pre‑Fabricated Roof Curbs: Provide pre‑fabricated roof curb for
exhaust fan \[and provide acoustic insulation on duct below roof line\].
\[Provide acoustic insulation on fan inlet plenum.\]

I. Exhaust Fans: Shall conform to the following:

1\. Direct‑driven wall mounted exhaust fans.

2\. Housing shall be heavy gauge spun aluminum construction and shall be
weatherproof.

3\. Fan wheels shall be backwardly curved non‑overloading centrifugal
design and be statically and dynamically balanced.

4\. Housing shall be provided with rubber grommetted internal wiring
passage and shall discharge exhaust air in a 360 degree pattern, away
from the building.

5\. Fan shall have integral attachment collar or angle flange to receive
a through the wall sleeve.

6\. Each fan installation shall include a backdraft damper.

7\. Fan shall be tested according to AMCA 210 and AMCA 300 \[and shall
meet the requirements of these procedures.\] \[and shall comply with ARI
670 requirements.\]

8\. Fan \[\_\_\_\_\] shall have explosion proof construction, an
explosion proof motor and explosion proof electrical connections.

9\. Refer to Division 16, Electrical for electrical connections and
controls.

J. Roof Ventilators: Shall conform to the following:

1\. Belt‑driven, roof mounted, exhaust fans.

2\. Housing shall be heavy gauge \[galvanized steel\] \[aluminum\] with
manufacturer\'s standard finish.

3\. Fans shall be integrally mounted in the ventilator housing. No
portion shall protrude below the roof line. Fans shall provide
performance listed.

4\. Housings shall be hinged for complete access and of low silhouette
design with four sided discharge.

5\. Motors shall have ball bearings and have the electrical
characteristics noted in the fan schedule. In addition, the motor shall
be removed from the airstream, and shall be encased in a weatherproof,
removable metal housing, open at the bottom to permit cooling.

6\. Unit shall be constructed for curb mounting, securely fastened, and
properly flashed.

7\. Provide prefabricated, curb, 12 inches in height.

8\. Provide screened discharge openings (birdscreen).

9\. ab Fans shall be equipped with automatically operated backdraft
dampers.

10\. Refer to Division 16 Electrical, for electrical connections and
controls.

11\. Structural framing shall be adequate to support units on roof.

12\. Fans shall be tested according to AMCA 210 and AMCA 300 and shall
meet the requirements of these procedures.

PART 3: EXECUTION

3.1 INSTALLATION:

A. General: Install equipment according to the manufacturer\'s
instructions and as required by NFPA 70 and NFPA 90A.

1\. Install fan units in locations as shown on the drawings.

2\. When fans are ducted, install flexible connections \[at inlet\]
\[and outlet\] of fan.

3\. Install fans in roof or exterior wall with flashing to prevent water
and weather from entering the building.

4\. Provide adequate access to fan locations requiring periodic
inspection and maintenance.

5\. Lubricate bearings before fan startup.

3.2 FIELD QUALITY CONTROL:

A. Performance Testing and Balancing: Shall be according to Section
15996 ‑ Testing, Adjusting, and Balancing of HVAC Systems.

3.3 ADJUSTING:

A. Speed Adjustment: The Contractor shall make speed adjustment of
V‑belt drive fans when required to produce specified capacity. This
adjustment may be done with adjustable sheaves for a single V‑belt or by
replacing sheaves for a multiple V‑belt.

3.4 SCHEDULES:

A. Fan Schedule: Listed below is a schedule of the fans with the
physical and operating characteristics of each:

Fan No. CFM S.P. Motor HP Sones Electrical

[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