Submittal Sheet

Commercial Gas Water Heaters
These designs comply with the current edition of the American National Standard for Gas Water Heaters, Volume III, ANSI Z21.10.3 / CSA 4.3
as an automatic circulating tank water heater, and automatic storage water heaters.
ALL MODELS
* Center line of water outlet on top of the water heaters is approximately 7 inches from the front edge of the water heater.
TOP VIEW
FRONT
BACK
VENT
CONNECTION
3 INCH ALUMINUM
(exhaust elbow)
E E
T & P VALVE
D
G
J
SUPPLY GAS
CONNECTION
F
B
CLEANOUT
3/4” NPT
DRAIN
3/4” NPT
RECIRCULATION
RETURN
1 1/2” NPT
WATER
INLET
LOWER
TEMPERATURE
PROBE
INTAKE AIR
CONNECTION
3 INCH PVC
H
I
WATER
OUTLET
HEIGHT
C
A
45°
30°
GAS
CLEAN OUT
T&P VALVE
DRAIN
VALVE
FRONT
EXHAUST
AIR INTAKE
18°
42°
26°
90°
For Technical Information and Automated Fax Service, call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
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www.hotwater.com AOSCG10210
MODEL
APPROX.
CAPACITY
GALLON/LITER
DIMENSIONS
SHIPPING
WEIGHT
STD
SHIPPING
WEIGHT
ASME
A B C D E F G H I J
INCHES/CM INCHES/CM INCHES/CM INCHES/CM INCHES/CM INCHES/CM INCHES/CM INCHES/CM INCHES/CM INCHES/CM LBS/KG LBS/KG
BTH-120(A) 60 / 227 3/7.62 27.75/70.5 6.3/16 35/88.9 55.5/141 53.5/135.9 11.25/28.6 42.25/107.32 48.5/123.2 18.25/46.36 460 / 208 490 / 220
BTH-150(A) 100 / 379 3/7.62 27.75/70.5 6.3/16 56.38/143.2 76/193.04 75.75/192.4 11.25/28.6 64/162.6 70/177.8 18.25/46.36 523 / 237 553 / 251
BTH-199(A) 100 / 379 3/7.62 27.75/70.5 6.3/16 56.38/143.2 76/193.04 75.75/192.4 11.25/28.6 64/162.6 70/177.8 18.25/46.36 523 / 237 553 / 251
BTH-250(A) 100 / 379 3/7.62 27.75/70.5 6.3/16 56.38/143.2 76/193.04 75.75/192.4 11.25/28.6 64/162.6 70/177.8 18.25/46.36 523 / 237 553 / 251
BTH-300(A) 119/450.96 4.75/12.07 33.12/84.12 4.75/12.07 52.00/132.08 75.75/192.41 73.75/187.3 12.75/32.39 63.13/160.35 69.25/175.9 23.00/58.43 855 / 387 855 / 387
BTH-400(A) 119/450.96 4.75/12.07 33.12/84.12 4.75/12.07 52.00/132.08 75.75/192.41 73.75/187.3 12.75/32.39 63.13/160.35 69.25/175.9 23.00/58.43 855 / 387 855 / 387
BTH-500(A) 119/450.96 4.75/12.07 33.12/84.12 4.75/12.07 52.00/132.08 75.75/192.41 73.75/187.3 12.75/32.39 63.13/160.35 69.25/175.9 23.00/58.43 855 / 387 855 / 387
GAS
INTAKE
CLEANOUT
T&P
DRAIN
EXHAUST
1 1/2" NPT
WATER
OUTLET
FRONT
18°
30°
45°
42°
70°
20°
TOP
RECIRCULATION RETURN
CLEANOUT
3/4" NPT
T&P
3/4" NPT DRAIN
1 1/2" NPT
WATER INLET
4" EXHAUST VENT
CONNECTION
E
FRONT
CONNECTION
1 1/2" SUPPLY GAS
BACK
4" PVC AIR INTAKE
CONNECTION
B
WATER OUTLET
HEIGHT
D
J
G
I
H
F
C
A
BTH-120(A) through BTH-250(A)
BTH-300(A) through BTH-500(A)
GAS
INTAKE
CLEANOUT
T&P
DRAIN
EXHAUST
1 1/2" NPT
WATER
OUTLET
FRONT
18°
30°
45°
42°
70°
20°
TOP
RECIRCULATION RETURN
CLEANOUT
3/4" NPT
T&P
3/4" NPT DRAIN
1 1/2" NPT
WATER INLET
4" EXHAUST VENT
CONNECTION
E
FRONT
CONNECTION
1 1/2" SUPPLY GAS
BACK
4" PVC AIR INTAKE
CONNECTION
B
WATER OUTLET
HEIGHT
D
J
G
I
H
F
C
A
Electrical characteristics-120V-60Hz A.C., 5.0 A
“A” in model represents ASME construction
Propane gas models available