A.O. Smith GPD-50, GPD-40 LP, GPD-75 LP, GPDL-40, GPD-50 LP Technical Documents

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Residential Gas Water Heaters

DIRECT VENT

Features

DIRECT VENT DESIGN

One-pipe, dual-channel closed 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.

INTELLIGENT CONTROL LOGIC

The internal microprocessor provides enhanced operating parameters and tighter differentials for precise sensing and faster heating response to optimize performance

DYNACLEAN™ DIFFUSER DIP TUBE

Helps reduce lime and sediment buildup, maximizes hot water output. Made from long-lasting PEX cross-linked polymer.

SELF-POWERED ELECTRONIC GAS VALVE

Uses a thermopile to generate the power needed to operate the electronic gas control without requiring an external power source.

DIAGNOSTICS

The electonic gas control incorporates and LED status indicator that monitors system operation and service diagnostics.

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

PERMAGLAS

Provides corrosion resistance.

GLASS COATING

CSA CERTIFIED AND ASME RATED T&P RELIEF VALVE

8-YEAR LIMITED TANK & 6-YEAR PARTS WARRANTY

For complete information, consult written warranty

Series 200/201

May 2013

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CANRG45701

Residential Gas Water Heaters

DIRECT VENT

MODEL

NUMBER

SERIES

HOUR

RATING

ENERGY FACTOR

GAL. CAP.

GALLONS

FIRST

GDV-40

GDVT-50

GDV-75

200 73 0.60 37 38,000 37 68 54-3/4 22-1/4 16 12-1/4 45-1/4 Co-Axial 167

200 88 0.58 50 50,0005576 64-3/4 22-1/4 16-1/4 12-1/2 55-1/2 Co-Axial

200 131 0.57 75 55,000 60 76 65-3/4 26-1/416-1/4 12-1/2 55-1/2 Co-Axial 310

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. 75 gallon water connections are 12” on center. ** Allow 25 1/4¨ for 40 and 50–gallon models and 29 1/2¨ for 75–gallon models for front–to–back dimensions for air intake at the rear of the heater. Propane units are Series 201 All models are certified from sea level to 7,700 ft. elevations.

INPUT

BTU

PER HOUR

RECOVERY@

90ºF RISE

GALLONS

PER HOUR

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 9006627005. See the installation manual for complete installation and venting requirements.

DIMENSIONS IN INCHES

A B C** D E F

40 & 50 gal.

25-1/4

75 gal.

29-1/2

MIN VENT

MAX VENT

6” DIA. on 40 & 50 Gal. Models

7” DIA. on 75 Gal. Models

6 DIA.

FRONT

VENT

OUTLET*

TOP

T&P

42°

47°

EXTERIOR

WALL

APPROX.

SHIPPING

WEIGHT

(LBS)

187

DRAIN

75 gal. vent termination cap is not interchangeable with vent cap on 40 & 50 gal. models

For Technical Information, call 1-888-479-8324. A.O. Smith Corporation reserves the right to make produ ct changes or improvements without prior notice.

May 2013

www.hotwatercanada.ca

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CANRG45701