Specifications

Stellar Service Instructions REV: D
Date of Issue: 14/09/2007
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”.
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SAFETY WARNING
The purpose of these instructions is to provide sufficient information to allow a person with the skills required by the
Regulatory Authorities to carry out effective repairs to a Rheem Gas Water Heater in the minimum of time.
Safety precautions or areas where extra care should be observed when conducting tests outlined in this service
manual are indicated by print in bold italics and/or a warning symbol. Take care to observe the recommended
procedure.
When conducting repairs to a gas appliance the gas train including injector sizes must not be altered
or modified in any way.
INTRODUCTION
The information provided in these service instructions is based on the water heater being installed in accordance with
AS 5601/AG 601 and the Installation Instructions provided with each water heater.
Should you require further technical advice on a Rheem Stellar Water Heater, contact your nearest Rheem Service
Department where all genuine replacement parts are also available.
WATER HEATER MODEL IDENTIFICATION
The identification numbers are designed to convey detailed information about the heater to which it is attached. The
model number consists of 7 digits and 1 letter
850 330 N 0
Cylinder Warranty
8 -10 year
First Hour Capacity
330 litres
360 litres
Gas Type
N - Natural Gas
P - Propane Gas
No Reference System Requirement
The model number, serial number and date of manufacture should be quoted in all correspondence.
OPERATION
When the gas control knob is depressed in the pilot position, it allows gas to flow to the pilot head where it can be
ignited by a spark from the piezo igniter.
The pilot flame heats the thermocouple creating an electrical current to energise the magnetic safety valve and hold it
in the open position, allowing the pilot to remain alight when the gas control knob is released.
The gas control knob can then be rotated anticlockwise, by depressing slightly, to supply gas to the main burner. The
main burner is lit via a cross light action between the pilot and the gas emanating from the main burner.
Position 7 on the gas control knob will heat the water to approximately 66ºC. Each number on the gas control
represents a water temperature change of approximately 6ºC.
The water temperature is maintained by means of a liquid contained in the sensing bulb expanding in the capillary
tube and operating a bellows located in the gas control body.
As the water temperature increases the bellows expands and acts on the valve seat by means of a lever. When the
required set temperature is reached the main gas way is closed and the main burner is extinguished.