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GSW 73992 User Manual

Page 18

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General

CAUTION!

NEVER APPLY ELECTRICAL POWER TO

THIS WATER HEATER UNLESS IT IS COMPLETELY

FULL OF WATER. TO PREVENT DAMAGE TO THE TANK

AND HEATING ELEMENTS, THE TANK MUST BE FILLED

WITH WATER BEFORE USE. WATER MUST FLOW

FROM THE HOT WATER FAUCET BEFORE APPLYING

POWER.

Filling the Water Heater

1. Do not turn the power on until all the following steps,

including Startup steps, have been completed.

2. Make sure the drain valve is closed.

3. Open a hot water faucet associated with the system.

4. Open the cold water supply valve.

NOTE: When filling, avoid water leakage. Do not allow the

insulation of the water heater to get wet as water can cause

electrical malfunction.

5. When water runs out of the hot water faucet in a steady

stream, the tank is full.

6. Close the hot water faucet and check the system for

leaks. Repair as required and retest.

7. Connect a hose to the drain valve and route to a suitable

drain. Open the drain valve and let water run to flush out

any foreign matter that may have entered the system.

Once flushed, close the drain valve and disconnect

hose. Repeat steps 4-6.

Startup

Perform the following checks when the heater is placed into

operation for the first time.

Voltage Check: Verify that the supply voltage and the rating

plate voltage are the same.

1. Open the upper component panel cover and check all

electrical connections.

2. Remove the lower cover and the insulation for the ele-

ment compartment and check all electrical connections.

3. Turn "ON" the electrical supply to the heater.

4. Carefully watch all the components for one complete

cycle of operation to see that they function properly.

DANGER:

Hazardous voltages are present in both com-

partments. Be careful not to touch any electrical connec-

tions.

5. To check the operation of the thermostat

(a) operate the thermostat manually and

(b) let the heater come to the preset temperature and

shut off automatically.

6. Turn "OFF" the electrical supply to the heater.

7. Replace all the insulation and close all covers.

8. Turn "ON" the electrical supply to the heater.

High Temperature Limiting Device

The heater is equipped with a high temperature cutoff

switch. If the water temperature exceeds the preset limit this

device turns off the power to the heating elements. The high

temperature switch is set to activate at 88°C (190°F). If the

switch has been activated, allow the water temperature to

drop by 17°C (30°F) (min) and reset manually. The high-

temperature switch is not adjustable.

VI) OPERATION