Eternal GU145/508111145 User Manual

Service Information Center:
Call us rst if you have any questions with this product. We can help you with questions about assembly
and Water Heater operation or if there are any damaged or missing parts when you unpack this unit from the
shipping box. Please call before returning to the store.
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157140081 Date 2011/5/23
Installation ● Operation Manual
Natural Gas (NG) - Factory Default
Liquid Propane Gas (LPG) - Optional Orice
Model GU145 (S) / 508(11,12,21,22)1145 (S)
Model GU195 (S) / 508(11,12,21,22)1195 (S)
Model GU195 (M) /
508(11,12,21,22)1195 (M)
California Proposition 65 lists chemical substances known to the state to cause cancer, birth defects, death,
serious illness or other reproductive harm. This product may contain such substances, be their origin from fuel
combustion (gas, oil) or components of the product itself.
WARNING
! !
Read this Operator's Manual carefully and be sure your Water Heater is properly assembled, installed and
maintained. Failure to follow these instructions exactly could result in re, explosion, serious bodily injury and/or
property damage.
Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this or any other appliance.
WARNING
! !
IMPORTANT:
● Only specially trained and authorized personnel are permitted to service this water heater.
●
NOTE TO ASSEMBLER / INSTALLER:
Leave this manual with the consumer.
●
NOTE TO CONSUMER:
Keep this manual for future reference.
●
RECORD YOUR SERIAL #________________
(see silver CSA label on Gas Water Heater)
C
Only a licensed professional can install Eternal units for safety and code compliance. Venting and plumbing
codes can vary by location. Installation instructions and all applicable codes must be followed or property
damage, severe injury, or death may result. Failure to use a licensed plumber or contractor, follow venting,
plumbing, and building codes; or follow installation instructions may be unlawful and will void the product
warranty. Grand Hall is not responsible for any costs incurred for repairing any problems resulting from failure to
follow installation instructions or applicable codes.
WARNING
! !
1

Eternal GU145/508111145 Specifications

General

Brand	Eternal
Model	GU145/508111145
Category	Water Heater
Language	English

Summary

Safety Information and Warnings

General Safety Warnings

Highlights critical safety precautions regarding fire, explosion, injury, and property damage.

Technical Specifications

Model Specifics

Details technical specifications for GU145 and GU195 model water heaters.

General Specifications

Provides general performance and operational specifications for the water heaters.

Pre-Installation Safety Instructions

General Safety Precautions

Provides essential safety guidelines to follow before beginning the installation process.

Handling Flammable Vapors

Warns against the dangers of flammable liquids and their vapors near the appliance.

Installation Preparation

Additional Safety and Placement Guidelines

Covers crucial safety checks and considerations for selecting the optimal installation location.

Condensate Disposal

Condensate Trap Filling and Drain Line Material

Details how to fill the condensate trap and specifies approved materials for drain lines.

Condensate Neutralization and Trap Cleaning

Explains the acidic nature of condensate, use of neutralizers, and how to clean the trap.

Indoor Installation Requirements

Combustion Air Supply

Details the necessary combustion air supply requirements for indoor installations.

Outdoor Installation Guidelines

Exhaust Ventilation and Placement Warnings

Provides guidance and warnings regarding exhaust ventilation and placement for outdoor units.

Mobile Home Installation

Mobile Home Installation Requirements

Outlines the specific codes and safety requirements for installing the unit in mobile homes.

Wall Mounting Procedures

Mounting Steps

Step-by-step guide for securely mounting the water heater to a wall.

Venting System Materials and Guidelines

Approved Vent Pipe Materials

Lists the acceptable materials for the water heater's venting system.

Venting Guidelines and Warnings

Provides essential guidelines for proper venting installation and safety warnings.

Direct and Power Venting Configurations

Direct Vent System

Power Vent System

Vent Termination Clearances

Indoor Vent Termination Clearances

Outdoor Vent Termination Clearances

Vent Pipe Installation Clearances

US Installation Clearances

Canadian Installation Clearances

Gas Supply Piping Requirements

Gas Piping System Codes and Sizing

Details gas piping system codes, recommended pipe sizes, and capacity charts.

Natural Gas and Propane Supply Capacity

LP Gas Conversion

LP Conversion Notice and Kit

Steps for LP Conversion

Water Supply Connection

Water Supply Requirements

Filling and Draining the Water Heater

Condensate Piping Installation

Condensate Piping Requirements

Condensate Disposal Methods

Recirculation Pump Connection and T&P Valve

Temperature and Pressure Relief Valve Operation

Recirculation Pump and IPC Functionality

Electrical Connection and Safety

Installation Codes and Grounding

Covers electrical installation codes, grounding requirements, and voltage precautions.

Wiring and Servicing Precautions

MCU Installation Procedure

MCU Installation Steps and Dip Switches

MCU Wiring and Warnings

MCU Unit Identification and Power

Unique Unit Identification Number

Power Supply Schematic Diagram

Plumbing Diagrams: Recirculation and Storage

Recirculation System Diagram

Single Unit with Storage Backup Diagram

Plumbing Diagrams: Multiple Units and Storage

Recirculation System with Multiple Units

Multiple Units Connection with Storage Backup

Commercial Application Recommendations

Rapid On/Off Hot Water Usage System

Large Volume Usage System

Operating Instructions

Before Starting The System

Provides initial checks and safety procedures before starting the water heater.

Starting Up and Normal Operation

Guides the user through the process of starting up and operating the water heater.

Front Control Interface Operation

Control Panel Overview

Temperature Adjustment and Safety

Details how to adjust water temperature and highlights safety warnings related to high temperatures.

Remote Controller Operation

Remote Controller Overview

Adjusting Temperature and Locking Controller

Maintenance and Service Procedures

Systems and Parts Check

Outlines the recommended annual checks for various systems and parts of the water heater.

Cleaning and Burner Service

Diagnostic Functions

Accessing Diagnostic Information

Diagnostic Codes and Explanations

Troubleshooting Common Issues

Burner Ignition and Water Temperature Issues

Provides troubleshooting steps for common issues like burner ignition and water temperature problems.

Other Operational Issues

Self-Monitoring Error Codes

Error Code Descriptions and Remedies (E1-E94)

Lists diagnostic error codes from E1 to E94 and their corresponding remedies.

Clearing Error Messages and Service Contact

Provides instructions on clearing error messages and contact information for service.

Gas Combustion Analysis

Combustion Analyzer Usage and Notice

Explains how to use a combustion analyzer and provides related notices.

Recommended Combustion Levels

Lists the recommended O2 and CO2 levels for natural gas and propane combustion.

Gas Combustion Adjustment Procedures

High Firing Adjustment Procedure

Details the procedure for adjusting gas combustion at high firing rates.

Low Firing Adjustment and Supply Pressure Checks

Outlines procedures for checking low firing combustion and gas supply pressures.

Wiring Diagrams (GU145/GU195)

GU145(S) / GU195(S) Wiring Diagram

Provides the electrical wiring diagram for GU145(S) and GU195(S) models.

Wiring Diagrams (GU195M)

GU195(M) Wiring Diagram

Provides the electrical wiring diagram for GU195(M) models.