A.O. Smith BTPV-650A, BTP-740A, BTP-540A, BTP-650A User Manual

STANDARD FEATURES

Meets ASHRAE/IES 90.1-1999 thermal efficiency and standby loss
requirements. Meets SCAQMD Low NOx requirements.

Professional Start-Up is provided.

BTP ATMOSPHERIC CONVENTIONAL (Vertical Venting) — A barometric

draft regulating damper is provided.

BTPV HORIZONTAL AND DIRECT VENT — Optional vent kits allow for
sidewall venting or direct venting.

GLASS-LINED TANK — Exclusive corrosion protection with glass-lining
and nickelous oxide on all interior tank surfaces. Multiple anodes provide
corrosion protection. Factory installed A.G.A./ASME rated Temperature and
Pressure relief valve.

POWERED GAS BURNER — Premix Low NOx burner design with internal
FGR. Features an internal blocked flue sensor, separate pilot system, internal
thermal cutoff & anti-flashback barrier. Inlet gas pressures: 14" W.C. max.,
8" W.C. min. natural gas only.

CONSERVATIONIST

®

COMMERCIAL GAS DIRECT VENT

TANK-TYPE WATER HEATERS

BTP-540A, BTPV-540A, BTP-650A,

BTPV-650A, BTP-740A, BTPV-740A

Low NOx Certified

FULLY AUTOMATIC CONTROLS — Safety shut off, high temperature limit

control, dual thermostat (adjustable 120

°F thru 180°F) for accurate

temperature control.

HIGH ALTITUDE INSTALLATION — Equipped with adjustable air intake
damper, easy to reset for high altitude installation by Authorized BTP
Start-Up agent.

DRAFT EQUALIZING COMBUSTION CHAMBER — Patented dome system
balances pressures inside the combustion chamber to ensure even heat
distribution, optimum flue loading and maximum heat transfer.

THICK PERMAFOAM INSULATION — Saves fuel, reduces standby heat loss.

JACKET — Is of heavy gauge steel with baked enamel finish over bonderized

undercoat.

U.L. CERTIFIED.

ASME CONSTRUCTION — Rated working pressure 160 PSI.

A.G.A./ASME TEMPERATURE & PRESSURE RELIEF VALVE — Factory installed.

OTHER FEATURES

• Two layers of high temperature ceramic fiber insulation surrounding
combustion chamber • Flame inspection port opening • Mounted on rugged
channel iron skids • Multiple anodes for protection.

EASY CLEANING — One handhole clean out provided.

CAUTION: Must be installed on noncombustible surface.

Storage Input Recovery Recovery Rating

Capacity Rating Rating Rating Current Draw

Models (Litres) Nat. 100

U.S. Gals. BTU/HR. GPH GPH 120V

BTP(V)-540A 85 (261) 540,000 523 374
BTP(V)-650A 85 (261) 650,000 630 450
BTP(V)-740A 85 (261) 740,000 718 512

Based on 80% thermal efficiency obtained in A. O. Smith engineering laboratories.
NOTE: To compensate for the effects of high altitude areas above 2000 feet, recovery ratings

should be reduced approximately 4% for every 1000 feet above sea level.

°°

°F Rise 140

°°

°°

°F Rise 60Hz 1 Phase

°°

6.0 Amps

LIMITED WARRANTY OUTLINE

If the tank should leak anytime during the first three
years, under the terms of the warranty, A.O. Smith
will furnish a replacement heater less burner and
controls; installation, labor, handling and local de­livery extra.

THIS OUTLINE IS NOT A WARRANTY.

For complete information, consult the written
warranty or A.O. Smith Water Products Company.

Warranty does not apply to product installed
outside of the United States of America or its
territorial possessions and Canada.

Revised December 2004

A 107.0

ALL DIMENSIONS IN INCHES (MILLIMETERS)

Models A B C D** E*** F G H I Conn. Ship. Wt.

BTP(V)-540A

BTP(V)-650A

BTP(V)-740A

* Minimum gas supply pipe is 1 1/4”, reference Manual, Table 7 for gas supply pipe size.

** D dimension is for atmospheric vent size.

*** E dimension is for direct and side-wall vent size.

80 3/4 73 32 1/4 9 6 26 1/2 93 29 1/2 48 1/2 1* 950

2,051 1,854 819 229 152 673 2,362 749 1,232 25.4 431 kg

80 3/4 73 32 1/4 9 8 26 1/2 93 29 1/2 48 1/2 1* 950

2,051 1,854 819 229 203 673 2,362 749 1,232 25.4 431 kg

80 3/4 73 32 1/4 9 8 26 1/2 93 29 1/2 48 1/2 1* 950

2,051 1,854 819 229 203 673 2,362 749 1,232 25.4 431 kg

Gas Approx.

BTP(V) SUGGESTED SPECIFICATION

GENERAL

Water heater(s) shall be Model______________as manufactured by A.O. Smith or equal. Water heater(s) shall be of glass-lined design and include a
powered gas burner, redundant main gas valves, gas pressure regulator and flame inspection port. Heater(s) shall have an input rating of ______and a
recovery rating of_________GPH at a temperature rise of 100°F with a maximum storage capacity of 85 gallons. Heater(s) shall be equipped with 1-1/2"
NPT water inlet and outlet openings and a boiler-type handhole cleanout. Heater(s), for barometric venting and under UL795 for sidewall/direct venting,
shall be constructed and stamped in accordance with ASME Boiler and Pressure Vessel Code and be so marked for a maximum working pressure of 160
psi. Heaters shall include a high temperature limit control, dual bulb thermostat for accurate temperature control and anti-stacking compensation and a
factory installed A.G.A. rated temperature and pressure relief valve. Heater(s) shall be equipped with multiple anodes for corrosion protection, insulated
with polyurethane foam, and meet ASHRAE/IES 90.1-1999 requirements for thermal efficiency and standby loss, and meet SCAQMD R1146.2 low NOx
requirements. Heater(s) shall have a minimum thermal efficiency 80%. The outer jacket shall have a baked enamel finish over a bonderized undercoat. All
internal surfaces of the heater(s) exposed to water shall be glass-lined with an alkaline borosilicate, nickelous oxide composition that has been fused to
steel by firing at a temperature range of 1,400°F. Heater(s) tank shall have a 3 year limited warranty against corrosion as outlined in the written warranty.

METHOD OF VENTING

BTP heater(s) shall be factory supplied with a Barometric Draft Regulator for conventional atmospheric venting using conventional venting materials.
BTPV heater(s) shall be supplied with an optional vent kit allowing for horizontal sidewall venting or direct venting.

BURNER AND CONTROLS

Burner(s) shall be of the premix with internal FGR & thermal cutoff design. Design shall include a separate spark pilot ignition system. In addition,
burner(s) shall have an integral blocked flue sensor, glass view port, main gas regulator, automatic gas valve, manual test cock and manual gas shutoff
valve. Burner(s) must be factory installed, tested and started by an A. O. Smith Authorized BTP start-up agent before placing the unit(s) into operation.

A 108.0

A. O. Smith Water Products Company, Inc.

On Line www.aosmithwaterheaters.com

For Technical Information and

Automated Fax Service

Phone: [phone]

A. O. Smith Corporation reserves the right to make product changes
or improvements at any time without notice.

© A. O. Smith Corp., 2004

A. O. Smith

Water Products Company

Ashland City, TN

A Division of A. O. Smith Corporation

Printed in U.S.A.