A.O. Smith ProLine Spec Sheet
For technical information call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
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AOSRG47000
FLAMMABLE VAPOR IGNITION
RESISTANT (FVIR) WATER HEATERS
A. O. Smith FVIR design meets the American National Standards
Institute standards (ANSIZ21.10.1-CSA 4.1) that deal with the
accidental or unintended ignition of flammable vapors, such as
those emitted by gasoline.
Features a sealed combustion chamber with intake air 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.
Maximum Hydrostatic Working Pressure: 150 PSI
B
A
G
H
F
D
1/2" GAS
CONNECTION
COLD
CONNECTION
C
E
HOT
CONNECTION
(ANODE OUTLET
ON T&P MODELS)
ANODE ROD
(OPTIONAL T&P
LOCATION)
T&P VALVE
Maximum Hydrostatic Working Pressure: 150 PSI
B
A
G
H
F
D
1/2" GAS
CONNECTION
COLD
CONNECTION
C
E
HOT
CONNECTION
(ANODE OUTLET
ON T&P MODELS)
ANODE ROD
(OPTIONAL T&P
LOCATION)
T&P VALVE
Recovery capacities based on actual performance tests.
Water connection is 3/4” on all models
†Models ship with supplied insulation blanket.
For 10-year tank and 10-year parts warranty, change “G” to “X” in model number (example: XCR-40).
‡ LP models not available on GCRH-40.
*For optional side-mounted recirculating taps, add “L” to the suffix (example: GCR-40L).
All models approved for installation from sea level to 10,100 ft. elevation.
Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement.
Model
Number
Nominal
Gallon
Capacity
Rated
Storage
Volume
First
Hour
Rating
(Gallons)
UEF
BTU
Input
Natural
Gas
BTU
Input
Propane
Gas
Recovery
90°F Rise
Gallon Per
Hour
Dimensions in Inches
Approx.
Shipping
Weight (lbs)
A B C D E F *G *H
Draft
Hood
Tall Models
†GCB-30R 30 29 62 0.60 32,000 29,000 32 60-1/2 57 16 14 8 51 N/A N/A 3 or 4 123
GCR-30R 30 29 62 0.60 32,000 29,000 31 60-1/2 57 18 14 8 51 N/A N/A 3 or 4 132
‡GCRH-40 40 38 65 0.59 35,500 N/A 38 61-3/4 58-1/4 20 12-1/4 8 52 N/A N/A 3 or 4 138
†GCB-40 40 38 78 0.65 40,000 36,000 42 61-3/4 58-1/4 18 12-1/4 8 52 N/A N/A 3 or 4 130
GCR-40* 40 38 80 0.66 40,000 36,000 42 61-3/4 58-1/4 20 12-1/4 8 52 14-1/4 51-3/4 3 or 4 138
GCG-50* 50 48 81 0.62 40,000 37,000 41 60-3/4 57-1/4 21 12-1/4 8 50 1/2 14-1/4 50-1/2 3 or 4 148
GCR-50* 50 48 84 0.62 40,000 37,000 43 60-3/4 57-1/4 22 12-1/4 8 50-1/2 14-1/4 50-1/2 3 or 4 165
GCRT-50* 50 48 89 0.61 50,000 45,000 54 60-3/4 57-1/4 22 12-1/4 8 50-1/2 14-1/4 50-1/2 4 165
†GCRX-50* 50 49 99 0.61 60,000 54,000 65 65-1/2 61 22 13-1/2 8 54-1/4 14-1/4 54-1/4 4 182
GCRX-55* 55 55 83 0.62 60,000 54,000 65 59-3/4 55-1/4 24 13-1/2 8 48 14-1/4 48 4 185
Short Models
†GCBL-30R 30 29 65 0.60 32,000 29,000 32 50-1/4 46-3/4 18 14 8 40 N/A N/A 3 or 4 114
GCRL-30R 30 29 55 0.60 32,000 29,000 32 50-1/4 46-3/4 20 14 8 40 N/A N/A 3 or 4 108
†GCBL-40 40 38 68 0.57 40,000 36,000 41 51-1/2 48 20 12 8 41-1/4 N/A N/A 3 or 4 134
GCRL-40 40 38 67 0.58 40,000 36,000 41 51-1/2 48 22 12 8 41-1/4 N/A N/A 3 or 4 135
GCRL-50 50 50 81 0.62 40,000 40,000 43 53-1/4 49-3/4 24 13-1/4 8 41-3/8 N/A N/A 3 or 4 177
COMMERCIAL-GRADE
RESIDENTIAL GAS WATER HEATERS
© December 2019 A. O. Smith Corporation. All rights reserved.
www.hotwater.com | 800-527-1953 Toll-Free USA | A. O. Smith Corporation | 500 Tennessee Waltz Parkway | Ashland City, TN 37015