Residential Gas Water Heaters
PROMAX PLUS HIGH EFFICIENCY FEATURES
MEETS ENERGY-EFFICIENCY REQUIREMENTS
FOR MOST GAS UTILITY REBATE PROGRAMS
2"-thick CFC-free foam insulation, external heat traps and other
®
+PLUS
HIGH EFFICIEENNCCY
energy-saving features produce minimum .62 Energy Factor, which
meets Energy Star Home Program recommendations and California
Title 24 requirements.
6-YEAR LIMITED TANK AND PARTS WARRANTY
For complete information, consult written warranty or A.O. Smith Water
Products Company.
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
Southern California and Texas requirements.
COREGARD™ ANODE ROD
An A.O. Smith exclusive. Aluminum anode has stainless steel core, protects tank
against corrosion longer than 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.
DURABLE TAMPER-RESISTANT BRASS DRAIN VALVE
®
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 all 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.
EQUIPPED WITH C3 TECHNOLOGY
See other side.
SERIES 100/101
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Revised May 2008
AOSRG45300
Residential Gas Water Heaters
SERIES 100/101
FIRST
BTU
RECOVERY
90ºF RISE
APPROX.
SHIPPING
WEIGHT
(LBS)
DIMENSIONS IN INCHES
DRAFT
HOOD
OUTLET
MODEL
NUMBER
HOUR ENERGY GAL. INPUT
R
SERIES
RATING FACTOR CAP. PER HOUR GALLONS VALUE
GALLONS
A
B
C
D
E
F
†
NATURAL PER HOUR
GVR-30 100/101
GVR-40 100/101
GVR-50 100/101
66
.63
.62
.62
30
40
50
40,000
40,000
40,000
41
41
41
16
16
16
62-3/8
58
18
13-3/8
8
8
8
51-7/8 3 or 4
48-7/8 3 or 4
50-3/8 3 or 4
126
137
71
80
59-7/8 55-1/2 20-1/2 13-3/8
60-7/8 56-1/2 22 13-3/8
172
Recovery capacity based on actual performance tests.
Water Connections – 3⁄4" on all models.
† Propane Gas – 37,000 BTU input on all models.
For 10-Year Tank and 6-Year Parts Warranty, change “G” to “X” in Model Number (example: X VR-30).
HOT CONNECTION
ANODE ROD*
Flammable Vapor Ignition
™
Resistant C3 Technology
Water Heaters
COLD
CONNECTION
E
C
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.
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
A
B
1/2" GAS
CONNECTION
F
A
If flammable vapors
accidentally enter the
combustion chamber,
the Corderite flame
arrestor is designed
so flames burn off
the top surface and
cannot escape down
through the arrestor.
D
*Location for optional top-mounted
T&P Valve if ordered from factory.
B
A. Easy-to-light
B. View port for easy
burner inspection
inside sealed
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.
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Revised May 2008
AOSRG45300
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