Reliant FVIR GAS WATER HEATER Technical Information PDF herunterladen (Seite 66)

RESIDENTIAL GAS AND ELECTRIC WATER HEATER

TROUBLESHOOTING and SERVICE HANDBOOK

RELIANCE Water Heater Company Technical Training Department

NOT ENOUGH HOT WATER - ELECTRIC

CAUSE

Not enough hot water complaints are becoming more frequent in the water heater

industry. This increase was triggered when changes required by our regulatory

agencies were implemented. For example, heaters are now factory preset at a

lower temperature and inlet tubes have been shortened. While lower temperatures

settings reduce the burn rate, and shorter dip tubes guard against stacking, both

affect the amount of hot water a water heater can supply. The following test will

help determine if a water heater is supplying the intended amount of hot water and

will help pinpoint any problems that exist.

TEST

Please read all the steps of the test prior to beginning. If you feel uncomfortable

performing any of these steps, contact a service person to conduct this test for you.

STEP 1

At the faucet nearest to the water heater, time (in seconds) how long it takes to fill a

1 gallon bucket (flow rate).

Gallon per minute (gpm) = 60 seconds / seconds to fill a 1 gallon bucket

If the bucket fills in: 10 sec = 6 gpm

12 sec = 5 gpm

15 sec = 4 gpm

20 sec = 3 gpm

24 sec = 2.5 gpm

STEP 2

Turn both upper and lower thermostat dials on the water heater to 130° F.

STEP 3

Run about 15 gallons of hot water from the nearest faucet. Shut water off.

STEP 4

Water heater should complete heating 15 gallons in approximately 45 minutes

STEP 5

At a nearby faucet using a candy thermometer, measure the hot water temperature.

STEP 6

The temperature should fall between 120 F to 140 F.

STEP 7

Continue running the hot water until 60% of the tank capacity is depleted:

CAPACITY DEPLETE

30 gallons 18 gallons

40 gallons 24 gallons

50 gallons 30 gallons

66 gallons 39 gallons

80 gallons 48 gallons

120 gallons 72 gallons

STEP 8

At the same faucet using a candy thermometer, measure the water temperature.

STEP 9

The temperature should be about 30 F below the temperature in step 6.

THE FIX

Step 6 - if the temperature was not within range, check the thermostats.

Step 9 - if more than 30 F was lost, check the lower element for continuity and the

dip tube.

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