A.O. Smith GPS-75 User Manual

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GENERAL SAFETY

A.O. Smith GPS-75 Specifications

General

Brand	A.O. Smith
Model	GPS-75
Category	Water Heater
Language	English

Summary

General Safety and Emergency Procedures

Gas Leak Detection and Response Protocols

Detailed steps for identifying and responding to gas leaks.

Essential Safety Warnings and Manual Retention

Key safety alerts and instructions for keeping the manual.

Safe Installation, Use, and Service Overview

Understanding Safety Symbols and Key Definitions

Explanation of DANGER, WARNING, CAUTION symbols and important roles.

General Safety Precautions

Fire, Explosion, and Scald Hazard Warnings

Critical warnings regarding fire, explosion, and scalding risks.

Additional Safety Guidelines

Flammable Vapors and Carbon Monoxide Hazards

Risks associated with flammable liquids and CO gas.

Introduction and Installation Preparation

Preparing for Water Heater Installation

Key steps and considerations before installing the water heater.

Specific Installation Requirements (Massachusetts)

Carbon Monoxide Detectors and Signage Rules

State-specific mandates for CO detectors and warning signs.

Typical Water Heater Installation Overview

Component Identification and Control Panel

Diagrams of water heater parts and thermostat controls.

Water Piping and Mixing Valve Usage

Scald Prevention with Mixing Valves

Using mixing valves to prevent hot water scalds.

Locating the New Water Heater

Location Considerations and Drainage Requirements

Guidelines for selecting a safe and accessible installation location.

Flammable Material Risks in Installation Areas

Safety precautions for areas with flammable liquids or vapors.

Combustion Air and Ventilation Requirements

Clearances, Insulation, and CO Hazards

Safety rules for vent clearances, insulation blankets, and CO risks.

Ventilation for Confined and Unconfined Spaces

Requirements for air supply based on installation space type.

Ventilation Air Intake Methods

Indoor and Outdoor Air Supply Options

Methods and diagrams for providing ventilation air.

New Water Heater Installation: Chemical and Water Piping

Chemical Vapor Corrosion Risks and Water Piping

Impact of chemicals on vent systems and water pipe connections.

Thermal Expansion and Toxic Chemical Hazards

Risks of pressure buildup and contamination from chemicals.

Temperature-Pressure Relief Valve and Piping

T&P Valve Requirements and Explosion Hazards

Safety and installation rules for the relief valve.

Discharge Pipe Safety and Water Damage Prevention

Guidelines for the relief valve discharge pipe to prevent damage.

Gas Piping and High Altitude Adjustments

Gas Piping Safety and Leak Testing

Procedures for safe gas line installation and leak checks.

High Altitude Orifice and CO Warnings

Adjustments for high altitude and carbon monoxide risks.

Sediment Traps, Filling, and Venting Basics

Sediment Trap Installation and Gas Safety

Importance of sediment traps to prevent gas system contamination.

Filling the Water Heater and Venting Overview

Procedure for filling the tank and general vent system setup.

Vent System Clearances and Planning

U.S. Horizontal Vent Clearances

Diagrams showing minimum distances for horizontal vent terminals.

Vent System Planning and Pipe Sizing

Guidance on designing the vent route and selecting pipe size.

Vent Pipe Materials and Condensate Management

Approved Vent Pipe Materials and Installation

Specifications for PVC, CPVC, and ABS vent pipes.

Condensate Handling and Blower Assembly Checks

Managing vent system condensation and blower connections.

Sidewall Vent Terminal Installation

Vent Terminal Installation Procedure and Diagrams

Step-by-step guide for installing the vent terminal through a wall.

Power Vent Wiring Schematic and Safety

Wiring Diagrams and Electrical Safety Precautions

Electrical connection diagrams and essential safety measures.

Vent System Installation Completion

Sidewall and Vertical Vent System Installation

Final steps for installing sidewall or vertical vent systems.

Vent Termination Clearances and Requirements

Critical distances for vent outlets to ensure safety.

Vent Pipe Preparation and Materials

Initial Preparation and Material Selection

Steps for preparing PVC/CPVC pipes and selecting materials.

Primer and Cement Application Guidelines

Safe and correct application of primer and solvent cement.

Vent Pipe Joint Assembly and Cleanup

Pipe Deburring, Dry Fitting, and Cement Application

Preparing pipe ends and applying cement for strong joints.

Joint Assembly and Cleanup Procedures

Steps for assembling pipes and cleaning excess cement.

Operating Instructions and Safety Checks

Pre-Operation Safety Checks and Gas Leak Procedures

Essential checks before operation and actions for gas detection.

Water Heater Operation and Temperature Setting

Step-by-step guide for starting and adjusting the water heater.

Temperature Regulation and Scald Prevention

Adjusting Water Temperature and Scald Hazard Risks

How to set temperature and minimize scald risks.

Temperature Indicators and Adjustment Controls

Understanding the water heater's temperature display and buttons.

Important Operational Information

Startup Conditions: Smoke, Odor, Thermal Expansion, Sounds

Notes on initial operation, including smoke, odor, and noises.

Operational Problems: Smelly Water and Hydrogen Gas

Troubleshooting common issues like smelly water and hydrogen gas.

Periodic Maintenance and Housekeeping

Venting System and Burner Inspection

Procedures for inspecting the vent system and burner assembly.

Burner Cleaning and General Unit Upkeep

Steps for cleaning the burner and maintaining the unit's exterior.

Anode Rod, Relief Valve, and Draining Procedures

Anode Rod Inspection and Replacement

Maintenance of the anode rod for tank protection.

Relief Valve Operation and Tank Draining

Testing the relief valve and emptying the water heater tank.

Water Heater Service and Leakage Checks

Service Guidelines and Identifying Water Leaks

General service advice and methods for detecting water leaks.

Repair Parts List and Ordering

Component Identification for Parts Ordering

A diagram and list of water heater components for ordering parts.

Troubleshooting with Intelli-Vent Control System

Intelli-Vent LED Status Codes and Troubleshooting

Diagnosing issues using LED status codes on the control system.

Intelli-Vent Control Troubleshooting (Continued)

Intelli-Vent Error Codes and Resolution Steps

Further troubleshooting for the Intelli-Vent control system error codes.

General Troubleshooting Guide

Common Water Heater Problems and Solutions

A comprehensive list of common issues and their solutions.

Limited Residential Gas Warranty

Warranty Terms, Conditions, and Responsibilities

Details on warranty coverage, exclusions, and owner obligations.

Claim Process and Important Information

Steps for filing a warranty claim and required documentation.