Components And Their Function; Wiring Diagram - Rheem TM039 Service Instructions Manual

Components and their Function

Temperature and Pressure Relief Valve: A T&PR valve is designed to provide automatic
relief to the water heater by discharging water in case of excessive temperature, pressure
or both.
Never fit a T&PR Valve with a pressure rating greater than that indicated on
the product-rating label.
Over Temperature Energy Cut Out (E.C.O.): An ECO is a temperature-sensing device in
combination with the thermostat that automatically cuts off the supply of electrical energy
to prevent excessive water temperature occurring. This device will not reset automatically
but may be manually reset once temperatures have fallen to a safe level.
Thermostat: A thermostat is a device, responsive to temperature, which controls the
supply of electrical energy to the element to maintain the stored water at the required
temperature.
Heating Unit (Element): An element is a tubular device containing an electric resistance
that converts electrical energy into heat. The maximum rating of the Rheem Water Star is
800 watts.
Transfer Valve: A 3 way valve, sensitive to temperature that simultaneously opens one
outlet and closes the other transferring the direction of water flow.

Wiring Diagram

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TM039 Rheem Water Star Service Instructions REV: A
Date of Issue: 02/09
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
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