Hubbell Electric Heater Company T User Manual download pdf (Page 16)

SECTION V - SERVICING & REPLACEMENT OF PARTS

WARNING / CAUTION

Before servicing or replacing any part make sure to turn the power supply switch to the OFF position.

RELIEF VALVE

1. Disconnect power from unit.

2. Shut off incoming water and boiler water supply.

3. Lift test lever on relief valve to relieve pressure in tank.

4. Disconnect overflow piping.

5. Unscrew relief valve, remove assembly and replace with new one.

6. Connect overflow piping.

7. Turn on incoming water supply and check for leaks.

8. Turn safety switch to ON position.

Test Lever

Overflow Piping Outlet

Tank Connection

Temperature Probe

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Hubbell Electric Heater Company T User Manual Page 16