A.O. Smith GPVX 75L Series User Manual

POWER VENTED GAS WATER HEATERS
Installation and Operating Manual
1605 100271597 / 2000195581 Rev A
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
POWER VENTED GAS MODELS
WITH HOT SURFACE IGNITION
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 CONTACT THE COMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER.
MODELS GPVX 75L and BTF-80 SERIES 210 , 211
- Do not store or use gasoline or other flam-
mable vapours and liquids in the vicinity of
this or any other appliance.
- WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas sup-
plier's instructions.
• If you cannot reach your gas supplier, call
the fire department.
- Installation and service must be performed by
a qualified installer, service agency or the
gas supplier.
WARNING: If the information in these instruc-
tions is not followed exactly, a fire or explosion
may result causing property damage, personal
injury or death.
• For Your Safety •
AN ODOURANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.

A.O. Smith GPVX 75L Series Specifications

General

Brand	A.O. Smith
Model	GPVX 75L Series
Category	Water Heater
Language	English

Summary

POWER VENTED GAS WATER HEATERS

General Safety Warnings

Highlights severe risks like fire, explosion, and injury if instructions are not followed.

Gas Leak Safety Procedures

Details crucial steps to take if gas is smelled, including avoiding ignition and contacting authorities.

Professional Installation Requirement

Emphasizes that installation and service must be performed by a qualified professional.

SAFE INSTALLATION, USE AND SERVICE

IMPORTANT DEFINITIONS

Defines key terms like Qualified Installer, Service Agency, and Gas Supplier for safe installation and operation.

GENERAL SAFETY GUIDELINES

Fire Hazard Prevention Measures

Details fire prevention measures and warnings for water heater operation.

Burn Hazard from Hot Water

Warns about severe burn risks from hot water and advises on safe temperature settings.

Explosion Hazard from Overheating

Highlights explosion risks from overheated water and the need for a properly sized relief valve.

GENERAL SAFETY - CONTINUED

Cautions for Installation and Use

Lists cautions regarding improper installation, use, and service to prevent property damage.

Carbon Monoxide Gas Hazard

Details risks of carbon monoxide poisoning and necessary precautions for venting.

Flammable Vapors Fire Hazard

Warns about fire and explosion hazards from flammable vapors and advises on safe storage.

INTRODUCTION AND PREPARATION

Installer and Service Agency Qualifications

Defines qualifications and responsibilities for installers and service agencies.

Installation Preparation Steps

Outlines essential steps and considerations before beginning the water heater installation.

TYPICAL INSTALLATION OVERVIEW

Water Heater Component Identification

Identifies components of the gas water heater using numbered figures for reference.

WATER PIPING AND MIXING VALVES

Mixing Valve Usage and Safety

Explains the function and necessity of mixing valves for safety and temperature control.

Hot Water Scalding Hazards

Warns about the dangers of hot water scalding and identifies at-risk groups.

Combined Heating System Suitability

Discusses suitability for combined water and space heating applications.

WATER HEATER OPERATION

Burn Time vs. Water Temperature Data

Shows time-to-burn relationships for different water temperatures, highlighting scald risks.

Operational Sequence Diagram

Illustrates the water heater's sequence of operation from call for heat to standby.

ELECTRICAL REQUIREMENTS AND WIRING

Electric Shock Hazard Warning

Warns about electrical shock hazards and emphasizes safety precautions before servicing.

Wire Labeling for Servicing

Advises on proper wire labeling during servicing to prevent dangerous operation.

SAFETY LOCKOUT FEATURES

High Limit Control Functions

Explains high limit controls that shut off fuel supply to prevent overheating.

Blower Limit and Pressure Switches

Describes switches that limit blower temperature and monitor venting for safe operation.

Flammable Vapour Sensor Operation

Explains the sensor detecting flammable vapors and triggering a safety lockout.

WATER HEATER LOCATION GUIDELINES

Location Selection Considerations

Provides critical points for selecting a safe and economical indoor location for the water heater.

Leak Prevention and Drainage Measures

Warns about potential property damage from leaks and the need for proper drainage.

Flammable Liquids Storage Prohibitions

Advises against storing flammable liquids near the water heater due to fire/explosion risk.

CLEARANCES AND VENTING REQUIREMENTS

Servicing and Combustible Clearances

Specifies minimum clearances required around the water heater for servicing and combustibles.

Carpeted Floor Installation Rules

Instructs on protecting carpeted floors from fire hazards when installing the water heater.

Carbon Monoxide and Air Supply Safety

Reinforces CO risks and the need for proper venting and air supply.

AIR REQUIREMENTS AND CORROSION RISKS

Combustion and Ventilation Air Needs

Details the necessity of adequate fresh, uncontaminated air for safe operation.

Chemical Vapour Corrosion Hazards

Warns about corrosive effects of chemical vapors on vent systems and potential warranty voidance.

NEW WATER HEATER INSTALLATION GUIDELINES

Water Piping and Scalding Prevention

Provides instructions and warnings related to water piping connections and potential scald hazards.

Combined Heating System Requirements

Details considerations for systems used for both potable water and space heating.

Toxic Chemical Hazard Warning

Warns against connecting to non-potable water systems and introducing toxic chemicals.

COMBO HEATING INSTALLATION

Combo Heating System Requirements

Lists essential requirements for installing and using combo heating systems.

System Installation Procedures

Provides installation steps and options for fan coil/air handler or baseboard systems.

WATER SYSTEM CONFIGURATIONS

Closed Systems and Recirculation Loops

Explains requirements for check valves in recirculation loops to prevent passive circulation.

Thermal Expansion Management

Details thermal expansion effects in closed systems and the need for expansion tanks.

Property Damage Prevention Measures

Advises on preventing property damage by installing expansion tanks and proper connections.

TEMPERATURE-PRESSURE RELIEF VALVE

T&P Valve Explosion Hazard

Details explosion risks if the T&P valve is not properly installed or maintained.

T&P Discharge and Water Damage

Warns about potential water damage from T&P valve discharge and the need for proper drainage.

Tank Draining and Flushing Procedures

Explains periodic draining and flushing procedures for cleaning sediment from the tank.

HIGH ALTITUDE AND GAS PIPING SAFETY

High Altitude Installation Adjustments

Addresses CO risks at high altitudes and the need for specific orifices.

Gas Piping Safety Warnings

Warns about fire/explosion risks associated with incorrect gas supply or pressure.

LP Gas Pressure Hazard

Highlights explosion risks related to LP gas operating pressure.

GAS PIPING AND SEDIMENT TRAPS

Sediment Trap Installation Requirements

Details fire/explosion risks from contaminants in gas lines and the necessity of sediment traps.

FILLING THE WATER HEATER AND VENTING

Water Heater Filling Procedure

Advises on preventing property damage by filling the tank correctly before operation.

Venting System Installation Standards

Outlines requirements for proper vent system installation using approved materials.

Carbon Monoxide and Venting Safety

Reiterates CO risks and the importance of proper venting and air supply.

VENT TERMINATION CLEARANCES

Sidewall Power Vent Clearance Requirements

Provides specific clearance requirements for horizontal vent terminations based on combustion air needs.

BLOWER ASSEMBLY AND VENT PLANNING

Blower Assembly Installation Notes

Provides instructions for installing the blower assembly securely and checking for damage.

Vent System Planning Considerations

Guides on planning the vent system layout, considering elbows, pipe length, and supports.

VENTING SYSTEM MATERIALS AND PRACTICES

Polypropylene Vent System Specifics

Discusses condensate formation in venting and the need for proper drainage.

Exhaust Venting Installation Rules

Covers requirements for safe and efficient exhaust venting using sealed piping systems.

VENTING NOTES AND SCREEN INSTALLATION

Important Venting Warnings

Details vent termination requirements and sizing, including the use of vent screens.

Vent Screen Installation Procedure

Provides instructions for correctly installing vent screens into termination elbows.

EQUIVALENT VENT LENGTH CALCULATIONS

Vent Pipe Sizing and Elbow Equivalents

Lists equivalent lengths of straight pipe for various elbows used in vent systems.

Vent Piping Support and Slope Guidelines

Illustrates an example calculation for equivalent vent length and proper pipe support.

VENTING INSTRUCTIONS AND CONNECTIONS

Vent Pipe Layout and Support

Details how to plan vent pipe routing, supports, and connections.

Solvent Cement Usage Precautions

Warns about safe handling and use of solvent cement and primer for pipe connections.

VENT PIPE CONNECTIONS TO BLOWER

Blower Coupling Installation Procedure

Details how to connect vent piping to the blower assembly using rubber couplings.

BLOWER EXHAUST DIRECTION ADJUSTMENT

INSTALLATION CHECKLIST

Water Heater Location Checklist

Checklist items for proper water heater placement and clearances.

Gas Supply and Piping Checklist

Checklist items for safe gas supply and piping installation and leak testing.

Vent Pipe System Checklist

Checklist items ensuring correct vent pipe material, slope, and support.

Vent Termination Checklist

Checklist items for correct horizontal and vertical vent termination clearances and screens.

Water System Piping Checklist

Checklist items covering T&P valve, piping, and closed system precautions.

Electrical Connections Checklist

Checklist items for proper electrical connection, polarity, and grounding.

LIGHTING AND OPERATING INSTRUCTIONS

Safety Precautions Before Lighting

Crucial safety warnings and instructions to follow before attempting to light the water heater.

Operating and Starting Procedure

Step-by-step guide for safely starting up and operating the water heater.

TEMPERATURE CONTROL SYSTEM OPERATION

Burn Hazard from Hot Water Settings

Reinforces burn hazards from hot water and recommends temperature limiting devices.

Hot Water Scalding Risks Explained

Explains how hot water can cause injury and identifies vulnerable individuals.

GAS CONTROL VALVE THERMOSTAT SETTINGS

Thermostat Setting Temperature Chart

Shows temperature settings and burn times for different dial settings on the thermostats.

160°F Thermostat Temperature Table

Provides approximate temperatures and burn times for the 160° thermostat setting.

181°F Thermostat Temperature Table

Provides approximate temperatures and burn times for the 181° thermostat setting.

OPERATIONAL INFORMATION AND ADVICE

Startup Conditions: Condensate, Smoke, Sounds

Explains common conditions like condensate, smoke, and strange sounds during initial startup.

Operational Issues: Smelly Water, Hydrogen Gas

Discusses issues like smelly water, air in faucets, and hydrogen gas production.

PERIODIC MAINTENANCE SCHEDULE

General Heater and Vent Upkeep

Outlines routine checks and cleaning for the heater, piping, and vent system.

Venting System Inspection Procedure

Details annual inspection requirements for the venting system to ensure safety.

Blower Cleaning Instructions

Provides instructions for cleaning lint and dust from the blower assembly and motor.

BURNER OPERATION AND INSPECTION

Burner and Combustion Chamber Cleaning

Advises calling a service agency for cleaning the combustion chamber and burner.

Housekeeping for Ventilation Safety

Emphasizes maintaining clear ventilation and avoiding combustibles near the heater.

ANODE ROD MAINTENANCE

Anode Rod Property Damage Warning

Warns about property damage related to anode rod inspection and replacement.

TEMPERATURE-PRESSURE RELIEF VALVE

T&P Valve Explosion Hazard

Details explosion risks if the T&P valve is not properly installed or maintained.

T&P Discharge and Water Damage

Warns about potential water damage from T&P valve discharge and the need for proper drainage.

Tank Draining and Flushing Procedures

Explains periodic draining and flushing procedures for cleaning sediment from the tank.

WATER HEATER DRAIN AND FLUSH PROCEDURES

Draining the Water Heater Tank

Details procedures for draining the water heater tank safely.

Flushing the Water Heater Tank

Details procedures for flushing the water heater tank to remove sediment.

LEAKAGE CHECKPOINTS AND SERVICE

Identifying Water Leak Sources

Guides users on identifying and correcting water leaks from various sources.

General Service Safety Warning

General safety warning about reading manual and safety messages.

REFERENCE PARTS LISTING

TROUBLESHOOTING GUIDELINES

Burner Flame and Hot Water Issues

Lists causes and corrective actions for high burner flame and insufficient hot water.

Hot Water Temperature and Recovery Problems

Lists causes and corrective actions for water being too hot and slow hot water recovery.

TROUBLESHOOTING GUIDELINES (CONTINUED)

Condensation, Odors, and Leakage Issues

Lists causes and corrective actions for condensation, combustion odors, and water leakage.

HEATER CONTROL LOCKOUTS AND RESET

Heater Control Reset Procedures

Explains soft lockouts and how to reset the control system.

Understanding Lockout Types

Explains hard lockouts, which indicate a failed controller requiring replacement.

IGNITION AND SYSTEM ERROR CODES

Ignition States and Timing Information

Lists ignition sequence timing for various states of operation.

System Status and Error Code Interpretation

Lists error codes and their corresponding meanings for diagnosing system failures.

READING LED FLASH SEQUENCES