A.O. Smith ProMax SL Bedienungsanleitung

ProMax SL Direct-Vent Features

SIDE-MOUNTED RECIRCULATING TAPS

For installation with combination space heating/potable water heating

applications (such as with air handlers) or any system requiring a

recirculating hot water loop.

DIRECT-VENT DESIGN

One-pipe, dual-channel closed-combustion system draws all make-up air

from outside the home, eliminating problems caused by insufficient indoor

ventilation, and is FVIR compliant

Horizontal air intake and venting on all models up to 80 inches from outside

wall, with no electrical power needed.

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 and complies with less

than 40 ng/j requirements for NOx emissions.

PUSH BUTTON PIEZO IGNITOR

Makes lighting pilot fast and easy with one hand push button spark ignition.

HEAT TRAP NIPPLES Factory installed.

DURABLE TAMPER-RESISTANT BRASS DRAIN VALVE

A. O. SMITH Blue Diamond®GLASS COATING

Provides superior corrosion resistance compared to industry-standard

glass lining.

CSA Certified and ASME Rated T&P Relief Value

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 ANSI Z21.10.1-CSA 4.1 Standards governing storage-type water

heaters.

6-YEAR LIMITED TANK & PARTS WARRANTY

For complete information, consult written warranty or A. O. Smith Water

Products Company.

AOSRG46400

DIRECT-VENT

Residential Gas Water Heaters

Revised September 2009

Page 1 of 2

April 2011R

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.

Recovery capacities based on actual performance tests.

* Dual-channel system has 3˝ vent pipe inside 6˝ air intake pipe, for the 40 & 50 gallon models.

The 75-gallon model uses a 4”x 7” co-axial pipe.

All models have 2” foam cavity.

Water connection 3/4” male all models.

All models are certified for sale in Canada (add SMR “T25”).

75 gallon water connections are 12” on center.

FRONT

MAX VENT

EXTERIOR

WALL

6 DIA.

MIN VENT

SIDE

TAPS

42°

47°

25-1/4

69°

55°

TOP

INLET

DRAIN

T&P

OUTLET

Important! Vent Installation and Termination Requirements

Maximum horizontal vent distance is 80” to outside of exterior wall.

Minimum horizontal vent distance is 17” to outside of exterior wall.

Vent pipes may be trimmed (cut) for short vent installations.

For vent installation less than 30” the vent restrictor is required. Place restrictor

over the flue outlet on heater before installing the outlet vent pipe to the heater.

Recommended installation height for the heater vent pipe should be 68” for 40

gallon models and 76” for the 50-gallon and 75-gallon models (vent height).

Offset Vent Arrangement

1. When replacing an existing direct vent model, the new vent pipe

may drop from the minimum vent height as much as 7 1/4” to exit

through the existing vent opening in the exterior wall.

2. Vent may have one horizontal 90 degree turn before exiting through

exterior wall (Do not combine both offset vent arrangements in one

installation) (See examples in the installation manual)

High Rise Vent Arrangement

3. When vent termination is more than 80” above

the base of the heater. The horizontal vent run must

be a minimum of 22” from the center of the heater to

the outside exterior wall surface. (See example in the

installation manual)

Vent termination clearance hole through the exterior

wall should be approximately 7” diameter.

Snow accumulation and drifting should be considered

when locating the termination.

An optional wire grill vent cap protector is available

through the parts department, part number 9006627.

See the installation manual for complete

installation and venting requirements.

Residential Gas Water Heaters

AOSRG46400

Revised 2009 Page 2 of 2

SL DIRECT-VENT

40 & 50 gal.

25-1/4

75 gal.

29-1/2

MODEL

NUMBER

FIRST

HOUR

RATING

GALLONS

ENERGY

FACTOR

GAL.

CAP.

BTU

INPUT

PER

HOUR

RECOVERY

90ºF RISE

GALLONS

PER HOUR A B C D E F

VENT

OUT-

LET*

APPROX.

SHIPPING

WEIGHT

(LBS)

GDV-40L 73 .62 40 38,000 41 68 54-3/4 22-1/4 16 12-1/4 45-1/4 Co-Axial 167

GDVT-50L 88 .58 50 50,000 55 76 64-3/4 22-1/4 16-1/4 12-1/2 55-1/2 Co-Axial 187

GDV-75L 131 .57 75 55,000 60 76 65-3/4 26-1/4 16-1/4 12-1/2 55-1/2 17-1/4 54 Co-Axial 310

DIMENSIONS IN INCHES

41-3/4

53-3/4

16-1/2

6” DIA. on 40 & 50 Gallon Models

7” DIA. on 75 Gallon Models

75 gal vent

termination

cap is not

interchangeable

with vent cap

on 40 & 50 gal

models

September

April 2011R

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