Dometic WH-6GA User Manual

HEATING
WATER HEATERS
Form No. 3317866.000 04/21 | ©2021 Dometic Corporation
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
WH - 6GA, WH - 6GEA, WH - 9GEA, WH - 10GEA, WH - 16GEA
EN
L.P. Gas Water Heater
Installation and Operation Manual ........2
FR
Chauffe-eau à gaz P.L.
Manuel d’installation et d’utilisation .... 25
WARNING: If the information in this
manual is not followed exactly, a fire or
explosion may result, causing property
damage, personal injury, or death.
– Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
– WHAT TO DO IF YOU SMELL GAS
• Evacuate all persons from the vehicle.
• Shut off gas supply at the gas
container or source.
• Do not touch any electrical switch, or
use any phone or radio in the vehicle.
• Do not start the vehicle’s engine or
electric generator.
• Contact the nearest gas supplier
or qualified service technician for
repairs.
• If you cannot reach a gas supplier or
qualified service technician, contact
the nearest fire department.
• Do not turn on the gas supply until the
gas leak(s) has been repaired.
– Installation and service must be
performed by a qualified installer, service
agency or the gas supplier.

WARNING: BURN HAZARD, FIRE,
EXPLOSION, AND/OR CARBON MONOXIDE
HAZARD.
Keep the water heater area clear of combustible
cleaning materials, gasoline, and other flammable
vapors and liquids. Failure to obey this warning
could result in death or serious injury.

WARNING.
This product can expose you to lead, which is
known to the state of California to cause cancer and
birth defects or other reproductive harm. For more
information, go to www.P65warnings.ca.gov.

Dometic WH-6GA Specifications

General

Capacity	6 gallons
Dimensions	20.5 x 16.5 x 16.5 inches
Weight	40 lbs
Heating Method	Gas
Gas Type	Propane
Ignition	Electronic
Voltage	12 VDC
Energy Source	Gas

Summary

Safety and Signal Interpretation

Recognize Safety Symbols

Understand the meaning of safety alert symbols used in the manual for injury prevention.

Understand Signal Words

Learn how signal words indicate hazard levels and potential consequences.

Follow Supplemental Directives

Observe essential safety directives before installation and operation.

Key Safety Messages

Review critical safety guidelines for preventing hazards like fire and explosion.

Product Overview and Specifications

Recommended Tools and Materials

List of tools and materials recommended for servicing the water heaters.

Component Identification

Locate and identify all major components of the water heater.

Model Identification Breakdown

Understand the numbering system for different water heater models.

Unit Dimension and Weight Specs

View detailed specifications for unit dimensions and weight.

Water Heater Installation Guide

Prepare Installation Location

Steps to prepare the RV for water heater installation, including cutouts.

Secure Water Heater Mounting

Instructions on blocking and securing the water heater unit within the RV.

Connect Water Hoses

Guide on properly connecting hot and cold water hoses to the unit.

Install Gas Supply Line

Procedures for safely connecting the L.P. gas line to the water heater.

Install Control Switches

Steps for mounting and wiring the control switches for the water heater.

Wire 115 VAC Power Supply

Instructions for connecting the 115 VAC power supply to the unit.

Configure Control Switches

Detailed steps for configuring single, combination, and dual control switches.

Install Water Heater Unit

Final steps for installing the water heater unit, including venting and sealing.

Install Access Door and Test Leaks

Procedures for installing the access door and performing gas leak tests.

Operating Your Water Heater

Electronic Control Operation

How to operate the water heater using the electronic control panel.

Gas Heating Mode

Understand the function and operation of the gas heating element.

Electric Heating Mode

Understand the function and operation of the electric heating element.

Combined Gas/Electric Operation

Learn to use both gas and electric modes for quick recovery.

Clear Operation Failures

Steps to reset the water heater after a lockout or operational failure.

Shutting Down the Water Heater

Proper procedures for safely shutting down the water heater.

Maintenance and Care Procedures

Service DSI Control Board

Guidance on troubleshooting and servicing the DSI control board.

Perform Preventative Maintenance

Routine maintenance tasks to ensure optimal performance and longevity.

Clean Ignition Module

How to clean the electronic ignition module for reliable operation.

Maintain Water Heater Tank and Winterize

Procedures for tank maintenance, winterization, flushing, and odor removal.

Service Mixing Valve

Information on servicing or replacing the water mixing valve.

Service P/T Relief Valve

Guidelines for servicing or replacing the Pressure/Temperature relief valve.

After-Market Device Guidelines

Advice and warnings regarding the use of non-approved heating elements.

Wiring Diagrams and Specifications

Combination Gas/Electric Wiring Diagram

Detailed wiring diagram for the combination gas and electric water heater.

Disposal and Warranty Information

Proper Product Disposal

Guidelines for recycling and disposing of the water heater.

Limited Two-Year Warranty Details

Information on the product's warranty coverage and how to obtain it.