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Eternity Plus M20 User Manual

Eternity Plus M20
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WaterMark
GMK10177
WMKA22451
Thank you very much for purchasing our water heater. Before installing and
operating your water heater, please read this manual carefully and keep it
for future reference.
INSTALLATION GUIDE
FOR EXTERNAL INSTALLATION ONLY
Eternity Plus
GAS WATER HEATERS
MODELS
M20 (JSW40-20VH)
M20-50 (JSW40-20VH-50)
M26 (JSW52-26VH)
M26-50 (JSW52-26VH-50)

Questions and Answers:

Eternity Plus M20 Specifications

General IconGeneral
BrandEternity Plus
ModelM20
CategoryWater Heater
LanguageEnglish

Summary

Important Notes

Installation Notes

Guidelines for installation, including national, state, and local regulations.

Service Notes

Guidelines for maintenance and fault-finding according to instructions and regulations.

Plumbing Notes

Pre-set temperatures for M20-70°C and M20-50°C models, and connection requirements.

Specifications

Introduction

Dimensions and Connection Points (M20)

Detailed dimensions and connection points for the M20 model.

Dimensions and Connection Points (M26)

Detailed dimensions and connection points for the M26 model.

Safety Guidelines

Critical safety warnings and instructions for installation and operation.

General Guidelines

General advice and precautions for appliance installation and use.

Installation

Confirm Appliance Suitability

Verify the unit's suitability for gas type, pressure, water pressure, and electrical rating.

Selecting Suitable Location for Installation

Precautions and considerations for choosing the installation location, including ventilation and clearances.

Clearances for Outdoor Heater Locations

Required minimum clearances for outdoor installations based on AS/NZS 5601.1:2010 standards.

Gas Connection

Instructions and precautions for connecting the gas supply to the water heater.

Sizing and Connection Suitability

Guidelines for gas line sizing, pressure, and connection suitability.

Measuring Inlet Gas Pressure and Testing Gas Leakage

Procedures for checking gas pressure and performing leak tests before operation.

Water Connections

Instructions for connecting water supply lines, including valve types and pressure checks.

Electrical Connection

Requirements for electrical grounding, power supply, and switch installation.

Remote Controller (Optional)

Remote Controller Installation Requirements

Guidelines for safely installing remote controllers, considering splash resistance and sealing.

Remote Controller Temperature Setting (70°C Mode)

Range and increment for setting temperature with remote controller in 70°C mode.

Remote Controller Temperature Setting (50°C Mode)

Range and increment for setting temperature with remote controller in 50°C mode.

Remote Controller Installation

Details on cable requirements, length, and wall mounting for the remote controller.

Connection of Remote Controller Wiring

Step-by-step instructions for connecting the remote controller wiring to the water heater unit.

Initial Operation

Safety Before Operating

Crucial safety checks and precautions before initial startup of the water heater.

Normal Operation

Operation Without Remote Controller

Steps for operating the water heater using manual controls.

Operation With Multiple Remote Controllers

How to operate the unit when multiple remote controllers are connected.

Freeze Prevention

Information and caution regarding freeze protection for the water heater and associated pipes.

Maintenance and Service

Unit Draining and Filter Cleaning

Step-by-step guide for draining the unit and cleaning the cold-water inlet filter.

General Troubleshooting

Common problems related to temperature, hot water, unit ignition, and fan operation.

PCB Error Codes

A table listing error codes displayed on the remote controller and their corresponding faults.

Wiring Diagram

Illustrates the electrical connections and component wiring for the water heater.

Water Flow and Water Temperature (M20)

Charts showing water flow rates vs. temperature for the M20 model at different supply water temperatures.

Water Flow and Water Temperature (M26)

Charts showing water flow rates vs. temperature for the M26 model at different supply water temperatures.

Warranty Conditions

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