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FIRST
MODEL
HOUR
ENERGY
SERIES
NUMBER
RATING
FACTOR
GALLONS
GVR-30
100/101
66
GVR-40
100/101
71
GVR-50
100/101
80
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).
Flammable Vapor Ignition
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.
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.
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.
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 May 2008
www.hotwater.com
BTU
RECOVERY
GAL.
INPUT
90ºF RISE
CAP.
PER HOUR
GALLONS
NATURAL
PER HOUR
†
.63
30
40,000
41
.62
40
40,000
41
.62
50
40,000
41
A. Easy-to-light
Residential Gas Water Heaters
DIMENSIONS IN INCHES
R
VALUE
A
B
16
62-3/8
58
16
59-7/8 55-1/2 20-1/2 13-3/8
16
60-7/8 56-1/2
™
A
B
B. View port for easy
piezo igniter
burner inspection
inside sealed
combustion chamber
SERIES 100/101
C
D
E
F
18
13-3/8
8
51-7/8
8
48-7/8
22
13-3/8
8
50-3/8
HOT CONNECTION
E
C
T&P VALVE
1/2" GAS
CONNECTION
D
*Location for optional top-mounted
T&P Valve if ordered from factory.
APPROX.
DRAFT
SHIPPING
HOOD
WEIGHT
OUTLET
(LBS)
3 or 4
126
137
3 or 4
3 or 4
172
ANODE ROD*
COLD
CONNECTION
A
B
F
Page 2 of 2
AOSRG45300
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