Hubbell Electric Heater Company HSE - Manual (Page 15)

15
HEATING ELEMENT
1. Disconnect power from unit.
2. Shut off incoming water supply.
3. Attach hose to drain connection.
4. Lift manual release lever on relief valve to let air into system or break union on outgoing
water line.
5. Drain water from tank.
6. Disconnect the wires from the heating element terminals.
7. Remove the 3/8-16 nuts.
Tank Flange
Element Terminals
Nuts
8. Withdraw element assembly and remove gasket.
Gasket
Element Assembly
9. Install new gasket and insert new heating element.
10. For 3-phase heaters, rewire the element according to the voltage and phase rating of the unit
as shown below. For single phase operations, connect wires to terminals.
11. Fill tank and check around gasket for any leaks.