A.O. Smith GPD-40 User Manual

Instruction Manual
PRINTED 0312 185884-003
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
POWER DIRECT VENTED GAS MODELS
NOT FOR USE IN MANUFACTURED (MOBILE) HOMES
ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS
PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE WRITE TO THE COMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER.
RESIDENTIAL GAS WATER HEATERS
• For Your Safety •
AN ODORANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.
LOW LEAD
CONTENT

A.O. Smith GPD-40 Specifications

General

Model	GPD-40
Type	Gas
Capacity	40 gallons
Energy Factor	0.62
Warranty	6 years
Recovery Rate	40 gallons per hour
Gas Type	Natural gas
Vent Type	Atmospheric
Fuel Type	Natural gas
BTU	40, 000 BTU

Summary

SAFE INSTALLATION, USE, AND SERVICE

GENERAL SAFETY

Safety messages and instructions for installation, use, and service of the water heater.

INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS

CARBON MONOXIDE DETECTOR REQUIREMENTS

Specifies mandatory installation of carbon monoxide detectors for safety.

TYPICAL INSTALLATION

MIXING VALVE USAGE

LOCATING THE NEW WATER HEATER

FACTS TO CONSIDER ABOUT THE LOCATION

COMBUSTION AIR AND EXHAUST TERMINATION CLEARANCES

VENTING THROUGH AN OUTSIDE WALL CLEARANCES

VENT TERMINATION CLEARANCES

INSTALLING THE NEW WATER HEATER

WATER PIPING

Instructions and warnings related to connecting the water supply and drainage.

TEMPERATURE-PRESSURE RELIEF VALVE

GAS PIPING

GAS PIPING INSTALLATION

Guidelines for connecting the gas supply, including shut-off valves and sediment traps.

WIRING SCHEMATIC

ELECTRICAL SAFETY AND INSTALLATION

Critical safety warnings and instructions for electrical wiring and power supply.

VENT CONNECTIONS TO BLOWER ASSEMBLY

VENTING THROUGH AN OUTSIDE WALL

VENTING SYSTEM EXAMPLE INSTALLATIONS FOR ALL MODELS

CONNECTING VENT TO BLOWER

MAKING THE JOINT

SAFETY BEFORE LIGHTING

OPERATING INSTRUCTIONS

Step-by-step guide for the initial operation and lighting of the water heater.

TEMPERATURE REGULATION

HOT WATER CAN SCALD

Warnings and advice on preventing scald injuries from hot water.

START UP CONDITIONS

PERIODIC MAINTENANCE

VENTING SYSTEM INSPECTION

ANODE ROD

TEMPERATURE-PRESSURE RELIEF VALVE OPERATION

Instructions on how to manually operate and check the T&P relief valve.

LEAKAGE CHECKPOINTS

TROUBLESHOOTING GUIDELINES