Residential Gas Water Heaters
POWER DIRECT-VENT
®
PROMAX SL POWER DIRECT-VENT FEATURES
POWER DIRECT-VENT DESIGN
ProMax SL Power Direct Vent residential gas models are equipped with FVIR
technology to meet Phase III of the ANSI Z21.10.1 standards for the resistance to
flammable vapor ignition and resistance to lint, dust and oil accumulation tests.
The Closed-combustion two-pipe system draws combustion air from outside
and vents outside the home. The system uses PVC, CPVC or ABS pipe and vents
up to 45 feet with 3" pipe, including one elbow.
SIDE-MOUNTED RECIRCULATING TAPS
For installation with combination space heating/potable water heating
applications (such as the ProMax XL Heat Exchanger) or any system requiring
a recirculating hot water loop.
INTELLI-VENT® GAS CONTROL
Equipped with silicon nitride hot surface igniter and advanced electronics for
precise control of water temperature and simplified system diagnostics.
HEAT TRAP NIPPLES
Standard on all models.
QUIET MODULAR BLOWER
With 110/120 Volt electrical system (rating 3 amps or less), with 6-foot cord, standard
3-prong male connector.
™
A. O. SMITH DYNACLEAN DIFFUSER DIP TUBE
Reduces 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.
MAGNESIUM ANODE RODS
Provides long-lasting protection against tank corrosion.
DURABLE TAMPER-RESISTANT BRASS DRAIN VALVE
®
A. O. SMITH PERMAGLAS GLASS COATING
Protects steel tank from rust.
FACTORY-INSTALLED TEMPERATURE & PRESSURE (T&P) RELIEF VALVE
CODE COMPLIANCE: U.B.C., S.B.C.C., C.A.B.O., H.U.D., B.O.C.A. 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 heater.
6-YEAR LIMITED TANK AND PARTS WARRANTY
For complete information, consult written warranty or A. O. Smith Water Products Company.
* Intelli-Vent® is a registered trademark of the Emerson Electric Company
L.1
ARGSS00407
Revised August 2007R
RESIDENTIAL
Gas Water Heaters
POWER DIRECT-VENT
FIRST
BTU
BTU
RECOVERY
DIMENSIONS IN INCHES
APPROX.
SHIPPING
WEIGHT
(LBS.)
HOUR ENERGY GALLON
INPUT
OUTPUT 90ºF RISE
MODEL
NUMBER
R
RATING FACTOR CAPACITY PER HOUR PER HOUR GALLONS VALUE
GALLONS
A
B
C
D
E
F
G
H
NATURAL NATURAL PER HOUR
GPD-40L
GPDX-50L
GPD-75L
70
.60
40
50
75
40,000 † 30,000 †
65,000 † 47,500 †
70,000 † 53,200 †
41
64
72
16
57 48-1/2 21
21
15
15
8
8
8
42
17
42
224
232
352
.58
16 69-1/2 61
54-1/2 17 54-1/2
54-1/2 17 54-1/2
105
130
.58
16 71-1/2 61-1/2 26-1/4 15-1/2
GPDX-50L is supplied with 5’ of 3”ABS vent pipe and must be used for the first 5’ of the exhaust outlet vent system.
GPD-75L 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" Male on all models.
† Propane Gas – 40-Gallon: 36,000 BTU input, 27,360 BTU output.
50-Gallon: 60,000 BTU input, 43,800 BTU output.
C
E
75-Gallon: 65,000 BTU input, 49,400 BTU output.
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.
4"
OPTIONAL CIRCULATING LOOP CONNECTION ASSEMBLIES
3" VENT
11.5" MIN.
Sold separately. Kit Number 900152-2 includes two extended PEX lined nipples for side
FROMTOP OF
HEATERTO
CENTER LINE
OF FLUE
port connections. Kit Number 900260-4 is same as 900152-2, plus two
di-electric unions and 2 brass isolation valves. For use with systems that have a check
valve in the air handler or recirculating lines.
IMPORTANT:
SEE INSTALLATION MANUAL FOR COMBUSTION AIR AND VENTING
SYSTEM REQUIREMENTS FOR POWER DIRECT-VENT WATER
HEATERS
H
F
B
A
1/2" GAS
CONNECTION
OPTIONAL (DELUXE) ROUND HORIZONTAL
VENT TERMINATION KIT
Part Number 9002749
G
D
OPTIONAL (DELUXE) SQUARE HORIZONTAL
VENT TERMINATION KIT
Part Number 9003328
Maximum hydrostatic working pressure: 150 psi
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.
500 Tennessee Waltz Parkway, Ashland City, TN 37015
ARGSS00407
Revised August 2007R
©2007 A. O. Smith Corporation
Printed in U.S.A.
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