Reliant FVIR GAS WATER HEATER Technical Information PDF herunterladen (Seite 8)

RESIDENTIAL GAS AND ELECTRIC WATER HEATER

TROUBLESHOOTING and SERVICE HANDBOOK

RELIANCE Water Heater Company Technical Training Department

Temperature: Two metal probes mounted

onto the back of the control are immersed

inside the tank water. One probe (the

shorter) acts as a temperature high limit. If

water gets excessively hot, a sensor within

the probe opens, interrupts the small

electrical current to the gas valve, and gas

flow through the control is interrupted. If this

safety sensor opens, the entire control must

be replaced.

The longer probe contains a metal rod that

expands and contracts as water temperature

around the probe cools and heats. As the

rod expands, it pushes against a lever

actuated gas valve. If the regulator is

pushed sufficiently, gas flow is interrupted to

the main burner. Adjusting the temperature

dial changes the distance the rod must

expand or contract to open or close the gas

valve.

Gas: When you prepare to light the pilot,

you are instructed to turn the top

knob to the pilot position and depress

the knob. When the knob is

depressed gas will flow to the pilot

burner only. You then have to

(manually) ignite this pilot gas. When

the pilot is lit, the flame must heat the

thermocouple until it generates

sufficient electricity to the gas valve

to allow you to release the knob while

gas continues to flow to the pilot.

When the top knob is turned to the

“ON” position, gas is also available to

the main burner if the thermostat calls

for heat.

Residential Gas - continued

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Reliant FVIR GAS WATER HEATER Technical Information Seite 8