Commercial Gas Water Heaters
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.
CAPACITY, INPUT AND OUTPUT
500 Tennessee Waltz Pkwy, Ashland City, TN 37015
For Technical Information and Automated Fax Service, call 800-527-1953.
A. O. Smith reserves the right to make product changes or improvements without prior notice.
©2006 A.O. Smith Corporation
Printed in U.S.A.
ACGSS00305
Sept 2006R
www.hotwater.com
DIMENSIONS AND WEIGHT – ALL MODELS
*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.
®
LOW-NOx POWERED-BURNER MODELS
MODEL
NUMBER
BTP 540A
BTPV 540A
BTP 650A
BTPV 650A
BTP 740A
BTPV 740A
FI
R
ST
H
OUR
R
ATI
N
G
100° F
R
IS
E
5
83
22
06
.
7
6
9
0
2
6
11.
7
77
8
29
44
.
7
TA
NK
SI
ZE
8
5
321.
7
8
5
321.
7
8
5
321.
7
B
T
U
I
NPU
T
PER
H
OUR
540
,
000
650
,
000
740
,
000
G
allons
or
Litres
U.S. Gallons
Litres
U.S. Gallons
Litres
U.S. Gallons
Litres
I
G
P
H
or
LP
H
G
P
H
L
P
H
G
P
H
L
P
H
G
P
H
L
P
H
40
°F
4
°C
13
0
9
4
9
54
.
6
1
57
9
5
9
76
.
5
1
7
9
4
67
9
0
.3
1
00
°F
56
°C
5
23
19
7
9.
6
6
3
0
238
4
.
6
7
18
2
7
1
7
.
6
1
40
°F
7
8°C
3
74
1
4
1
5
.
6
450
1
70
3.3
5
12
193
7
.9
RECOVERY-
GA
LLON
S
PER
H
OUR
AT °F
T
EMPER
AT
URE
R
IS
E
I
nches
or
CM
Inches
CM
9
50
Lbs.
4
31.8
Kg
GAS
CONN.***
1
˝
-
A
8
0
-3/
4
2
05
.1
B
7
3
18
5
.
4
C
32-1/
4
81.9
D
9
22.9
E
2
6
-1/2
67
.3
F
2
6
-1/2
67
.3
G
93
23
6
.2
H
29-1/2
74
.9
I
4
8-1/2
123.2
G
D
I
MEN
SI
ON
S
SHI
PP
I
N
G
WE
IGHT
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
