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

READ AND **REMOVE THIS PAGE** BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

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

[DIVISION 15: MECHANICAL]{.underline}

SECTION 15457 - WATER HEATERS

USE: Furnishing and installing liquefied petroleum gas water heaters.

**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:**

**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. 1.3B: 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.

E. 1.3C: 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.

F. 1.3D: Insert number of copies of the manufacturer\'s operation 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.

G. 2.1A: Insert applicable data.

H. 2.1B: Insert capacity in gallons.

I. 2.1C: Select applicable phrase.

J. 2.1G: Select applicable phrase.

K. 3.1C: Select or edit bracketed phrase as appropriate.

L. 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: 02/91

SECTION 15457

WATER HEATERS

[PART 1: GENERAL]{.underline}

1.1 SUMMARY:

A. Section Includes: \[Furnishing\] \[and\] \[installing\] a \[tank\]
\[tankless\] type liquefied petroleum water heater with gas vent.

1.2 REFERENCES:

A. American Gas Association:

AGA Z 21.10.1-87 Gas Water Heaters Volume I Storage Water Heaters With
Input Ratings of 75,000 BTU Per Hour or Less

AGA Z 21.10.3-87 Gas Water Heaters Volume III Storage, With Input
Ratings Above 75,000 BTU Per Hour, Circulating and Instantaneous Water
Heaters

AGA Z 21.12-81 Draft Hoods

B. American Society of Heating, Refrigerating and Air-Conditioning
Engineers:

ASHRAE 90A-80 Energy Conservation in New Building Design

C. National Fire Protection Association:

NFPA 54-88 National Fuel Gas Code

1.3 SUBMITTALS:

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

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

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

D. Operation and Maintenance Instructions: Submit \[\_\_\_\_\] copies of
the manufacturer\'s operation and maintenance instructions for the water
heater to be used on this project.

1.4 QUALITY ASSURANCE:

A. Certification Requirements: The water heater design shall be
certified by the American Gas Association (AGA). The water heater shall
be of an energy saving design and shall comply with ASHRAE 90A.

[PART 2: PRODUCTS]{.underline}

2.1 EQUIPMENT:

A. General: The water heater shall be for use at \[\_\_\_\_\_\] ft
elevation. The liquified petroleum gas input shall be at least
\[\_\_\_\_\_\] BTUH which will \[result in a \[\_\_\_\_\] gallon per
hour recovery at 90 degrees F\] \[heat \[\_\_\_\_\] GPM of water at
\[\_\_\_\_\] degrees F\] temperature rise at sea level. The water heater
shall be derated for altitude. Water heater shall have a working
pressure of \[\_\_\_\_\] psi. The water heater shall have a built-in
inlet water strainer.

B. Tank: Shall have a capacity of \[\_\_\_\] gallons. Internal surfaces
exposed to water shall be glass lined with an alkaline borosilicate
composition fused to steel.

C. Safety Devices: \[Water heater shall be equipped with an automatic
gas shut off device to shut off entire gas supply in event of excessive
temperature in tank. Thermostat shall be energy saving. Heater shall
also be equipped with a pilot safety shutoff and a certified draft hood
meeting AGA Z 21.12. Controls shall totally regulate the gas supply to
main and pilot burners. Water heater shall have \[3/4\] inch tapping for
relief valve installation and extruded magnesium anode rod for cathodic
protection. Water heater shall have a built in gas filter.\] \[Water
heater shall be equipped with a safety shutoff device of the complete
shutoff type, built-in down draft diverter, thermocouple-magnetic pilot
safety device, temperature limiting device, gas pressure regulator, and
a piezo igniter.\]

D. Heat Exchanger: Shall be solid copper.

E. Controls: Shall be conveniently located, adjustable, and
thermostatic.

F. Tank Jacket: Shall be insulated with double density glass fiber
insulation. Outer jacket shall have a baked enamel finish.

G. Burners: \[Shall be all steel, flue from burners shall be baffled for
maximum thermal efficiency. Pilot shall have low input to improve
standby efficiencies.\] \[Shall be modulating, long life, and stainless
steel.\]

H. Gas Vent (Flue): Shall be double wall; galvanized steel outer wall;
aluminum inner wall; and an insulating air gap between them. The vent
shall be complete with cap, thimble and flashing.

[PART 3: EXECUTION]{.underline}

3.1 INSTALLATION:

A. General: Install water heater according to the manufacturers printed
instructions and NFPA 54.

B. Mounting Brackets: Shall be suitable for wall mounting of the water
heater.

C. Gas Vent: Shall be sized and installed according to the manufacturers
instructions and NFPA 54. \[The vent shall be connected to the vent of
the living quarters furnace so that there is a single roof penetration
for both appliances.\] The vent passing through the roof shall extend
through the flashing, roof jack or roof thimble.

[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