Commercial Gas Water Heaters
®
LOW-NOx POWERED-BURNER MODELS
Conservationist® (BTP and BTPV) commercial water heaters offer precise
powered-burner performance for medium-demand commercial applications,
plus the flexibility of conventional atmospheric venting, sidewall venting or
direct venting. To help ensure optimum performance, A. O. Smith offers
professional start-up service on BTP and BTPV models.
VENTING OPTIONS
• BTP models designed for conventional atmospheric vertical venting.
Barometric draft regulating damper provided. Order Vent Kit Part # 170777-005.
• BTPV models designed for horizontal atmospheric sidewall venting or direct venting,
using optional vent kits.
• For sidewall venting order Vent Kit Part # 192049-000.
• For direct venting order Vent Kit Part # 192050-002.
LOW-NOx POWERED GAS BURNER (NATURAL GAS ONLY)
• Pre-mix design with internal Flue Gas Recirculation (FGR)
• Safety features include internal blocked flue sensor, separate pilot
system, internal thermal cutoff and anti-flashback barrier
FULLY AUTOMATIC CONTROLS
• Including safety shut-off, high-temperature limit control
• Dual thermostat, adjustable from 120º F to 180º F
DRAFT EQUALIZING COMBUSTION CHAMBER
• Patented dome system ensures optimum flue loading and efficient heat
transfer by balancing pressure inside combustion chamber
ASME TANK CONSTRUCTION ON ALL MODELS
• Rated working pressure: 160 PSI
FACTORY-INSTALLED AGA/ASME TEMPERATURE & PRESSURE
RELIEF VALVE
GLASS-LINED TANK WITH MULTIPLE ANODE RODS
• For optimum protection against tank corrosion
FLAME INSPECTION PORT
HANDHOLE CLEANOUT
• For easy cleanout of sediment from tank bottom
HIGH-ALTITUDE INSTALLATION
• Adjustable air intake damper easily reset for high-altitude installation by
authorized start-up agent
CODES AND STANDARDS
• Meets ASHRAE/IESNA 90.1-1999 thermal efficiency and standby loss requirements
• Meets SCAQMD R1146.2 low-NOx requirements
WARRANTY
• Three-year limited tank warranty
• For complete warranty information, consult written warranty shipped with
water heater, or contact A. O. Smith Water Heaters
ACGSS00305
Sept 2006R
Commercial Gas Water Heaters
®
LOW-NOx POWERED-BURNER MODELS
CAPACITY, INPUT AND OUTPUT
RECOVERY-GALLONS
PER HOUR AT °F
FIRST
HOUR
BTU
TEMPERATURE RISE
INPUT
PER
RATING
100° F
RISE
Gallons
or
GPH
or
40°F
100°F 140°F
MODEL
NUMBER
BTP 540A
TANK
SIZE
85
321.7
85
321.7
85
321.7
4°C
1309
HOUR
Litres
LPH
56°C
523
78°C
374
U.S. Gallons
Litres
583
2206.7
690
2611.7
778
GPH
LPH
GPH
LPH
GPH
LPH
540,000
650,000
740,000
BTPV 540A
4954.6
1579
5976.5
1794
1979.6 1415.6
630 450
2384.6 1703.3
718 512
2717.6 1937.9
U.S. Gallons
Litres
U.S. Gallons
Litres
BTP 650A
BTPV 650A
BTP 740A
BTPV 740A
6790.3
2944.7
Based on 80% Thermal Efficiency obtained in A. O. Smith engineering laboratories.
To compensate for effects of high altitude above 2,000 feet, recovery ratings should be reduced approximately 4%
for every 1,000 feet above sea level.
Current Draw (120V, 60Hz, 1 Phase): 6.0 Amps
DIMENSIONS AND WEIGHT – ALL MODELS
DIMENSIONS
Inches
or
SHIPPING
WEIGHT
950 Lbs.
GAS
CONN.***
A
B
73
C
D
9
E
F
G
93
236.2
H
I
CM
1
-
80-3/4
205.1 185.4 81.9
32-1/4
26-1/2 26-1/2
29-1/2 48-1/2
74.9 123.2
Inches
CM
˝
22.9
67.3
67.3
431.8 Kg
*D dimension is for atmospheric vent size (BTP models).
**E dimension is for direct and sidewall vent size (BTPV models).
***Minimum gas supply pipe is 1-1/4". See Reference Manual, Table 7 for gas supply pipe size.
SUGGESTED SPECIFICATION
Water heater(s) shall be A. O. Smith Model __________________ or equal, with maximum storage capacity of 85 gallons, an
input rating of __________ BTU/Hr., a recovery rating of ___ GPH at 100º F temperature rise, and minimum thermal efficiency
of 80%. Heater(s) shall meet ASHRAE/IESNA 90.1-1999 requirements for thermal efficiency and standby loss, and meet
SCAQMD R1146.2 low-NOx requirements. In addition, heater(s) shall: 1) Include a powered gas burner, redundant main gas
valves, gas pressure regulator and flame inspection port. 2) Include a high-temperature limit control, dual-bulb thermostat for
accurate temperature control and anti-stacking compensation and a factory-installed AGA rated temperature and pressure
relief valve. 3) Be equipped with 1-1/2˝ NPT water inlet and outlet and a boiler-type handhole cleanout. 4) 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. 5) Have a glass-lined steel tank with multiple anodes for corrosion protection, and polyurethane foam insulation.
6) Tank shall have a 3-year limited warranty against corrosion as outlined in the written warranty.
Venting: BTP heater(s) shall be supplied with a Barometric Draft Regulator for conventional atmospheric venting.
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 pre-mix design, with internal FGR and thermal cutoff, separate spark pilot ignition
system, integral blocked flue sensor, glass view port, main gas regulator, automatic gas valve, manual test cock and manual
gas shutoff. Burner(s) must be factory-installed, tested and started by an A. O. Smith Authorized BTP Start-up Agent before
being placed into operation.
For Technical Information and Automated Fax Service, call 800-527-1953.
500 Tennessee Waltz Pkwy, Ashland City, TN 37015
A. O. Smith reserves the right to make product changes or improvements without prior notice.
ACGSS00305
Sept 2006R
©2006 A.O. Smith Corporation
Printed in U.S.A.
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