F
D
3" VENT
11.5" MIN.
FROM TOP OF
HEATER TO
CENTER LINE
OF FLUE
1/2" GAS
CONNECTION
B
A
E
C
4"
GPDX-50 is supplied with 5’ of 3” ABS vent pipe and must be used for the first 5’ of the exhaust outlet vent system.
GPD-75 is supplied with 5’ of 3” CPVC vent pipe and must be used for the first 5’ of the exhaust outlet vent system.
Recovery capacity based on actual performance tests.
Water connections, 3/4" on all models.
†
Propane inputs/recoveries: GPD-40: 36,000BTU/37GPH
GPD-50: 38,000BTU/39GPH
GPDX-50: 60,000BTU/59GPH
GPD-75: 65,000BTU/67GPH
*R Value shown is “performance rated.”
MODEL
NUMBER
FIRST
HOUR
RATING
GALLONS
ENERGY
FACTOR
GAL.
CAP.
BTU
INPUT
PER HOUR
NATURAL
†
RECOVERY
90ºF RISE
GALLONS
PER HOUR
R
VALUE*
A
B
C
D
E
F
BLOWER
OUTLET
APPROX.
SHIPPING
WEIGHT
(LBS)
GPD-40
70
.60
40
40,000
41
16
57
48-1/2
21
15
8
42
3
224
GPD-50
87
.59
50
40,000
41
16
66
57-1/2
21
15
8
51
3
232
GPDX-50
105
.58
50
65,000
64
16
69-1/2
61
21
15
8
54-1/2
3
232
GPD-75
130
.58
75
70,000
72
16
71-1/2 61-1/2 26-1/4 15-1/2
8
54-3/4
3
300
DIMENSIONS IN INCHES
IMPORTANT: VENTING AND COMBUSTION AIR REQUIREMENTS
Read and follow requirements shown in the Installation Manual for ProMax
®
Power Direct-Vent Gas water heaters dealing with type, placement and length
of vent pipe and vent termination, as well as clearances required to provide
adequate combustion and proper ventilation.
IMPORTANT:
SEE INSTALLATION MANUAL FOR COMBUSTION AIR AND VENTING
SYSTEM REQUIREMENTS FOR POWER DIRECT-VENT WATER
HEATERS
OPTIONAL (DELUXE) ROUND HORIZONTAL
VENT TERMINATION KIT
Part Number 9002749
OPTIONAL (DELUXE) SQUARE HORIZONTAL
VENT TERMINATION KIT
Part Number 9003328
Maximum hydrostatic working pressure: 150 psi
www.hotwater.com
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.
Residential Gas Water Heaters
POWER DIRECT-VENT
CLOSED COMBUSTION
Created October 2008
Page 2 of 2
AOSRG45900
204009_AOSRG45900.indd 2
204009_AOSRG45900.indd 2
10/24/08 12:34:29 PM
10/24/08 12:34:29 PM
