Technical Documents

Residential Gas Water Heaters
Revised May 2012 Page 2 of 2
www.hotwater.com AOSRG46900
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.
Effex
®
HIGH EFFICIENCY
A
B
C
F
H
E
GAS VALVE
DRAIN VALVE
HOT
CONNECTION
COLD
CONNECTION
ANODE ROD
ON/OFF SWITCH
D
FRONT VIEW
TOP VIEW
DRAFT HOOD
T&P VALVE
1/2”
G
MODEL
NUMBER
DIMENSIONS IN INCHES
DRAFT
HOOD
OUTLET
SHIPPING
WEIGHT
(LBS)A B C D E F G H
GAHH-40 61-3/4 58 20 13-1/4 8 51-1/2 23-1/4 25 3 or 4 157
GAHH-50 60-5/8 57-1/8 22 13-1/4 8 50-1/2 25-1/4 27 3 or 4 171
All dimension in inches.
For Canadian models add T25 SMR. i.e. GAHH-40-T25.
Recovery capacity based on actual performance tests.
Water Connections – 3/4" on all models.
Not available in LP gas (Propane).
All models are certified from sea level to 10,100 ft. elevations.
Flammable Vapor Ignition Resistant Water Heaters
This A. O. Smith FVIR design meets the American National Standards Institute standards (ANSI Z21.10.1 - CSA
4.1 Standards) that deal with the accidental or unintended ignition of flammable vapors outside the water
heater, such as those emitted by gasoline.
Maximum Hydrostatic Working Pressure: 150 PSI
102
100
SERIES
GALLON
CAPACITY
ENERGY
FACTOR
BTU
INPUT
PER
HOUR
RECOVERY
AT 90°F
RISE
FOAM
THICKNESS
(INCHES)
70
40 0.70 40,000 43 2
81
50 0.70 40,000 43 2
FIRST
HOUR
RATING
GPH
GPH