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FIRST
HOUR
ENERG Y
GALLO N
MODE L
NUMBE R
FACTOR
CAPACITY
RATING
GALLON S
TALL MODEL S
GCV-30
67
.61
GCV-40
70
.59
GCV-50
88
.58
SHORT MODE LS
GCVL-30
60
.61
66
Recovery capacity based on actual performance tests.
Water Connections – 3/4" on all models.
† Propane Gas – 37,000 BTU input for 50 gallon models & 36,000 BTU for 40 gallon models and 32,000 BTU input for 30 gallon models.
For 10-Year Tank and 6-Year Parts Warranty, change "G" to "X" in Model Number (example: XCV-40).
Heat Trap Nipples factory-installed on all models.
Flammable Vapor Ignition
Resistant (FVIR) Water Heaters
A. O. Smith FVIR design meets the American National Standards Institute standards
(ANSI Z21.10.1 - CSA 4.1) that deal with the accidental or unintended ignition of
flammable vapors, such as those emitted by gasoline.
Feature a sealed combustion chamber with air intake filter and a flame arrestor built
into the water heater base. In addition, a thermal cutoff (TCO) device, is designed
to shut off gas flow to the burner and pilot if poor combustion is detected.
If flammable vapors accidentally enter the
combustion chamber, the arrestor is designed
so flames burn off the top surface and can not
escape down through the arrestor.
For Technical Information and Automated Fax Service, call 800-527-1953. A. O. Smith Corporation reserves the right to make produ ct changes or improvements without prior notice.
www.hotwater.com
Residential Gas Water Heaters
®
BTU
RECOVERY
INP UT
90ºF RIS E
THICKNES S
PER HOUR
GALLON S
(INCHES)
NATURA L
†
PER HOUR
30
35,500
36
40
40,000
41
50
40,000
41
30
35,500
36
SERIES 300/301
DIMENSION S IN INCHE S
FOAM
A
B
C
1
61-1/2
58
16
1
61-3/4 58-1/4
18
1
60-3/4
57
20
1
50
46-3 /8
18
A. Industry standard thermopile
B. Large View Port for easy burner inspection
C. 360
D. Thermal Cutoff (TCO) with manual reset
DRAF T
HOOD
D
E
F
OUTLE T
13
8
52
3 or 4
13
8
51-3/4
3 or 4
13
8
50-1/4
3 or 4
13-1/2
8
40
3 or 4
ANODE ROD*
HOT
CONNECTION
E
C
VALVE
1/2" GAS
CONNECTION
D
*Location for optional top-mounted
T&P Valve if ordered from factory.
Maximum Hydrostatic Working Pressure: 150 PSI.
0
combustion air filter
APPR OXIM ATE
SHIPPIN G
WEIGHT
(LBS )
112
138
153
112
COLD
CONNECTION
A
B
F
Page 2 of 2
AOSRG45551
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