Commercial Gas Water Heaters
POWERED BURNER MODELS
LARGE-VOLUME POWERED BURNER
FEATURES
The large-volume powered burner line includes the largest, most powerful A. O. Smith tanktype gas water heaters. With tank capacities up to 600 gallons and firing capacities up to 2.5
million BTUs per hour, these large-volume high-output water heaters are capable of producing
over 3,000 gallons (GPH) of hot water per hour at an 80°F rise. These heavy-duty industrialgrade water heaters are designed and built to handle the most demanding hot water heating
requirements of large commercial and industrial users.
POWERED GAS BURNER
U Suitable for natural or propane gas
U Electronic safeguard control with intermittent spark ignition
U Main and pilot automatic gas valves with gas pressure regulators
U Diaphragm air switch for proof of blower operation
U Flame inspection port
FULLY AUTOMATIC CONTROLS WITH SAFETY SHUTOFF
U High-temperature limit control (manual reset)
U CSA and ASME rated T&P relief valve
U Hinged-door control compartment for easy access
U Upper and lower thermostats for accurate temperature control
U Standard control is for 120°-180°F water service
U Factory-installed low-water cutoff
BLUE DIAMOND® GLASS LINING
U Proprietary A. O. Smith glass lining provides superior coverage and unmatched
durability
U Equipped with multiple anode rods for additional corrosion protection
MODELS
BTP 150-140
through
BTP 600-2000
HEAVY-DUTY JACKET
U Heavy-gauge steel jacket with baked powder-coated for durability
U Two 3” handhole inspection openings
MAXIMUM HYDROSTATIC WORKING PRESSURE
U All models: 160 psi
PROFESSIONAL START-UP SERVICE
U FACTORY START-UP INCLUDED
– Required for activating warranty and assuring maximum operating performance.
Contact your local sales representatives or Authorized Start-Up Agent to arrange a
FREE
U Assures proper installation and adjusts burner for clean combustion and most
operation
CODES AND STANDARDS
4.3 CSA Standards
U Meets the thermal efficiency and standby loss requirements of the U.S.
Department of Energy and current edition of ASHRAE/IESNA 90.1
OPTIONAL LOW NOx BURNERS
U Low NOx burners from 400,000 BTUH up to 2 million BTUH
U Complies with Texas Low NOx and Air Quality Management Districts with requirements
of less than 30 ng/j
Revised April 2012
Revised October 2012
start-up.
by UL (Underwriters Laboratories), according to ANSI Z21.10.3-
Low Lead Content
PG 1 OF 6
AOSCG11200
Commercial Gas Water Heaters
Revised April 2012 PG 2 OF 6
Revised October 2012
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AOSCG11200
Commercial Gas Water Heaters
†Indicates model equipped with “Wayne” burner.
All other “H” dimensions are for models equipped with “Power Flame” Power Burner.
Minimum Installation Clearances to Combustibles:
Front: 18 inches
Back: 0 inches
Sides: 0 inches
Top: 5 inches
A clearance of 24 inches is recommended from serviceable parts such as relief valve, power burner, drain valve and anodes (anodes are located on side
above cold water inlet).
Minimum gas supply pressure: 7 inches W.C.
Maximum gas supply pressure: 13 inches W.C.
BTP models are Category I appliances (Fan Assisted) and require a negative draft. These units should only be commonly vented with other Category I negative
draft appliances per the latest addition of the National Fuel Gas Code. An approved/listed Type “B” venting material is recommended. A negative draft of -0.02”
to -0.07” is required in the vent.
Revised April 2012 PG 3 OF 6
Revised October 2012
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AOSCG11200
Commercial Gas Water Heaters
Revised October 2012
Revised March 2009 PG 4 OF 6
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AOSCG11200
Commercial Gas Water Heaters
HIGH-VOLUME POWERED BURNER
THREE-YEAR LIMITED TANK WARRANTY
UÊ FACTORY START UP REQUIRED- - Included for activating warranty and assuring maximum operating performance.
Contact your local sales representative or Authorized Start-Up Agent to arrange a FREE certified start-up.
U For complete information, consult written warranty or contact A. O. Smith
OTHER BTP FEATURES:
TWO LAYERS OF HIGH-TEMPERATURE CERAMIC FIBER INSULATION IN COMBUSTION CHAMBER
FLAME INSPECTION PORT OPENING
MOUNTED ON RUGGED CHANNEL IRON SKIDS
NATIONAL BOARD STAMPING
ASME-RATED TEMPERATURE AND PRESSURE GAUGE
LOW-WATER CUTOFF
CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE
BAROMETRIC DRAFT REGULATOR
120-VOLT CONTROL CIRCUIT
DRAIN VALVE
180°F WATER SERVICE THERMOSTATS
BTP OPTIONS:
U FACTORY MUTUAL APPROVED CONTROL ARRANGEMENT
U HIGH OR LOW WATER PRESSURE CONTROL
UÊ CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE
UÊ MODULAR GRAPHIC BURNER SYSTEMS MANAGEMENT ON HEATERS WITH 270,000 BTU INPUT AND OVER
U LOW-NOX BURNER
OPTIONAL LOW NOx BURNERS
Available Low NOx Burner BTU Input
Sizes (Nat. Gas Only)
Add N to Model Number for low NOx Burner.
Example: BTPN-150-720
BTUH
400,000
540,000
720,000
800,000
1,250,000
1,500,000
2,000,000
BTPN/NMPR
MOTOR HP
1/4 HP
1/4 HP600,000
1/2 HP1,000,000
1 HP1,750,000
Revised April 2012 PG 5 OF 6
Revised October 2012
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AOSCG11200
HIGH-VOLUME POWERED BURNER
Commercial Gas Water Heaters
Gas water heater(s) shall be A. O. Smith model BTP _____________, with a storage capacity of
_______ gallons, an input rating of _______ BTU/hr and a recovery rating of _______ gallons
per hour (gph) at atemperature rise of 100ºF. Maximum gas supply pressure to heater(s) shall
be 13” W.C., and ASME working pressure shall be 160 psi.
The tank shall be glass lined with alkaline borosilicate composition and fused to the steel
by firing at 1600ºF, and shall be insulated with fiberglass insulation. The heater will also
be equipped with multiple anodes for cathodic protection. Heater(s) shall be equipped
with _______ NPT water inlet and outlet openings, and two 3” handhole cleanouts. The
heater(s) shall be constructed in accordance with ASME code, and the entire unit listed by
Underwriters Laboratories.
Heater(s) shall be equipped with a powered gas burner with electronic safeguard,
intermittent electronic ignition, main and pilot automatic gas valves, redundant solenoid
gas valve, gas pressure regulator, diaphragm switch for proof of boiler operation, and
inspection port.
Controls and other components shall include manual-reset high-temperature limit control,
upper and lower thermostats, combination temperature and pressure gauge, low-water
cutoff, CSA and ASME rated T&P relief valve, drain valve and draft regulator.
Control compartment door shall be hinged for easy access.
The heater(s) shall meet the thermal efficiency and standby loss requirements of the U.S.
Department of Energy and current edition of ASHRAE/IESNA 90.1. The tank shall have
a 3-year limited warranty against failure as outlined in the written warranty.
Professional start-up service shall be included and is required to activate warranty.
Professional Start-Up Included - required for activating warranty and assuring maximum
operating performance.
SUGGESTED SPECIFICATION
Revised April 2012 PG 6 OF 6
Revised October 2012
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AOSCG11200
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