Reliant FVIR GAS WATER HEATER Technical Information PDF herunterladen (Seite 9)

RESIDENTIAL GAS AND ELECTRIC WATER HEATER

TROUBLESHOOTING and SERVICE HANDBOOK

RELIANCE Water Heater Company Technical Training Department

Water Flow: When a hot water faucet is opened, water pressure from the well tank or street

main forces cold water into the water heater. This pushes hot water out of the tank.

Operation: A residential water heater is not a precise operating appliance. Because the water

heater relies on the expansion and contraction of a metal rod, when the thermostat dial is set at

an indicated setting (“▲” is recommended as a starting setting. This is approximately (120 F.)

The heater may shut off at 110 to 130 F. The heater will consistently shut off at this same

temperature. For this same reason, water temperature may drop 15 - 25 F, around the

temperature probe, before the main burner is activated. Keep in mind that hot water in the upper

part of the tank will probably be very near the “shut off” temperature of the control while incoming

cold water drops the water temperature around the thermostat probe. Also, short repeating

heating cycles caused by small hot water uses can cause temperatures at the point of use to

exceed the thermostat setting by up to 30° F.

Setting Approximate Temperature (°F) Time To Cause Injury

Hot (▲)

120° ± 10° 5 Minutes

A 130° ± 10° 30 Seconds

B 140° ± 10° 5 Seconds

C 150° ± 10° 1.5 Seconds

Very Hot 160° ± 10° Under 1 Second

Residential Gas - continued

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Reliant FVIR GAS WATER HEATER Technical Information Seite 9