223062 AOSRG45300

User Manual: AOSRG45300

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Residential Gas Water Heaters

PROMAX PLUS HIGH EFFICIENCY FEATURES
+ PLUS

HIGH EFFICIENC

Y

ENERGY-EFFICIENT DESIGNS
2"-thick CFC-free foam insulation, external heat traps and other
energy-saving features meet minimum .62 Energy Factor which qualifies for
ENERGY STAR® programs.

A. O. SMITH DYNACLEAN™ DIFFUSER DIP TUBE
Helps reduce lime and sediment buildup, maximizes hot water output. Made from
long-lasting PEX cross-linked polymer.

GREEN CHOICE® GAS BURNER
Patented “Eco-Friendly” design reduces NOx emissions by up to 33% and complies with
less than 40 ng/j requirements for low NOx.

COREGARD™ ANODE ROD
An A. O. Smith exclusive. Aluminum anode has stainless steel core, protects tank
against corrosion longer than ordinary anodes.

PUSH-BUTTON PIEZO IGNITOR
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 corrosion.

CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE
Top-mounted T&P Relief Valve as option on all models.

CODE COMPLIANCE: UBC, CEC, SBCC, CABO, HUD,
BOCA NATIONAL CODES, ASHRAE/IESNA 90.1 CURRENT EDITION AND
2004 NAECA
DESIGN-CERTIFIED BY CSA INTERNATIONAL
According to ANS Z21.10.1 - CSA 4.1 Standards governing storage-type water heaters.

EQUIPPED WITH C3 TECHNOLOGY
See other side.

6-YEAR LIMITED TANK AND PARTS WARRANTY
For complete information, consult written warranty or A. O. Smith Water
Products Company.

SERIES 100/101

®

Page 1 of 2
April 2011R

AOSRG45300

Residential Gas Water Heaters

®

SERIES 100/101
FIRST
BTU
MODEL
SERIES HOUR ENERGY GAL. INPUT
NUMBER
RATING FACTOR CAP. PER HOUR
GALLONS
NATURAL†

RECOVERY
R
90ºF RISE
GALLONS VALUE
PER HOUR

DIMENSIONS IN INCHES
A

B

C

D

E

F

DRAFT
HOOD
OUTLET

58

18

APPROX.
SHIPPING
WEIGHT
(LBS)

GVR-30

100/101

66

.63

30

40,000

41

16

62-3/8

13-3/8

8

51-7/8

3 or 4

126

GVR-40

100/101

71

.62

40

40,000

41

16

59-7/8 55-1/2 20-1/2 13-3/8

8

48-7/8

3 or 4

137

GVR-50

100/101

80

.62

50

40,000

41

16

60-7/8 56-1/2

8

50-3/8

3 or 4

172

22

13-3/8

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

Corderite Combustion Containment (C3) design meets American National
Standards Institute standards (ANS Z21.10.1 - CSA 4.1 Standards) 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.

E
C

T&P VALVE
1/2" GAS
CONNECTION

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.

B

A

F

D

*Location for optional top-mounted
T&P Valve if ordered from factory.

B

A. Easy-to-light
piezo ignitor

B. View port for easy
burner inspection
inside sealed
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.

April 2011R

www.hotwater.com

Page 2 of 2

AOSRG45300



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