Residential Gas Water Heaters
PROMAX® PLUS HIGH RECOVER FEATURES
HIGHEST RECOVERIES AND FIRST HOUR RATINGS
Capacity/input combinations up to 98 gallons/75,100 BTUs produce
recoveries up to 81 gallons per hour, with deliverable hot water up
to 150 gallons.
A. O. SMITH DYNACLEAN™ DIFFUSER DIP TUBE
Helps reduce lime and sediment buildup, maximizes hot water output. Made from long-
lasting PEX cross-link polymer.
GREEN CHOICE® GAS BURNER
Patented “Eco-Friendly” design reduces NOx emissions by up to 33%, complies with
Texas requirements for NOx emissions.
COREGARD™ ANODE ROD
A. O. Smith’s exclusive aluminum anode has a stainless steel core, protects tank
against corrosion longer versus ordinary mild steel anodes.
PUSH-BUTTON PIEZO IGNITER
Makes lighting pilot fast and easy with one-hand push-button spark ignition.
Standard on C3 Technology® models.
HEAT TRAP NIPPLES*
Factory installed on most models.
DURABLE TAMPER-RESISTANT BRASS DRAIN VALVE
THICK CFC-FREE FOAM INSULATION
Improves efficiency.
A. O. SMITH PERMAGLAS® GLASS COATING
Protects steel tank from rust.
FACTORY-INSTALLED TEMPERATURE
AND PRESSURE (T&P) RELIEF VALVE
Top-mounted T&P Valve available as option on C3 Technology models.
CODE COMPLIANCE: UBC, CEC, SBCC, CABO, HUD,
BOCA NATIONAL CODES, ASHRAE/IES 90.1-1999 AND
2004 NAECA
DESIGN-CERTIFIED BY CSA INTERNATIONAL
According to ANS Z21.10.1* standards governing storage-type water heaters.
*75 and 100 models certified to ANS Z21.10.3
Series 100/101
6-YEAR LIMITED TANK AND PARTS WARRANTY
For complete information, consult written warranty or A. O. Smith Water Products
Company.
EQUIPPED WITH C3 TECHNOLOGY®
See other side.
®
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Revised September 2008
AOSRG45400
Residential Gas Water Heaters
DIMENSIONS (INCHES)
FIRST
HOUR
RATING
(GPH)
RECOVERY
90°F RISE
PER HOUR
BTU INPUT
PER HOUR
NATURAL†
APPROX.
SHIPPING
WEIGHT
(LBS)
DRAFT
HOOD
MODEL
NUMBER
GALLON
CAPACITY
ENERGY
FACTOR
R
VALUE
OUTLET
A
B
C
D
E
F
88
38
48
138
172
195
215
275
350
GCVT-40
0.60
50,000
50,000
65,000
65,000
75,100
75,100
16
8
58-1/2 54-3/4 20-1/2 13-3/8
8
8
8
8
48-7/8
50-3/8
54-1/8
54-1/4
4
4
4
4
4
4
60-7/8 56-1/2
63-7/8 59-1/2
20
22
24
13-3/8
15-1/2
15-1/2
90
93
48
50
65
74
51
67
67
81
GCVT-50
GCVX-50
GCV-65
0.58
0.58
0.57
N/A
16
16
16
10
65
61
60
57
65
116
N/A
FCG-75*
26-1/2 14-3/4 16 50-1/4
27-3/4 15-3/16 16 57-3/8
68-1/2
N/A
98
81
FCG-100*
N/A
Recovery capacity based on actual performance tests. Water Connections – 1" on 75-gallon model, 1-1/4" on 100-gallon model, 3⁄4"on all other models.
* Not equipped with C3 Technology. 75 and 100 gallon models have factory installed (non heat trap) nipples, 75-gallon model has 80% efficiency,
998 BTU/hr. standby loss; 100-gallon model has 80% efficiency, 1146 BTU/hr. standby loss.
† Propane Gas – GCVT-40: 47,000 BTU input; GCVT-50: 45,000 BTU input; GCVX-50: 55,000 BTU input; GCV-65: 62,500 BTU input.
For 10-Year Tank and 6-Year Parts Warranty, change “G” to “X” in Model Number (example: XCVT-40), or change “F” to “P” in model number(example: PCG-75).
The standard FVIR models are certified for installations to 7700 feet elevation. For high attitude versions of the 75 & 100-gallon models add SMR “S19”
HOT CONNECTION
Flammable Vapor Ignition
ANODE ROD*
Resistant C3 Technology®
Water Heaters
Corderite Combustion Containment (C3) design meets American National
Standards Institute standards (ANS Z21.10.1) that deal with the accidental or
unintended ignition of flammable vapors, such as those emitted by gasoline.
COLD
CONNECTION
E
C
Covered by four U.S. patents, C3 Technology gas water heaters feature a sealed
combustion chamber with air intake screen and a fireproof Corderite flame
arrestor built into the water heater base. In addition, a thermal cutoff (TCO)
device, integral with the thermocouple, is designed to shut off gas flow to the
burner and pilot if poor combustion is detected.
T&P VALVE
If flammable vapors
accidentally enter the
combustion chamber,
the Corderite flame
arrestor is designed
so flames burn off
A
B
1/2" GAS
CONNECTION
F
the top surface and
cannot escape down
through the arrestor.
D
*Location for optional top-mounted
T&P Valve if ordered from factory.
A. Easy-to-light
B. View port for easy
burner inspection
inside sealed
(C3 models only)
piezo igniter
combustion chamber
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.
Revised September 2008
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AOSRG45400
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