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Instructions for Installation (cont’d)
Filling the Water Heater
To fill the water heater with water:
1. Close the water heater drain valve by turning the handle to
the right (clockwise). The drain valve is on the lower front
of the water heater.
2. Open the cold water supply valve to the water heater.
NOTE: The cold water supply valve must be left open
when the water heater is in use.
3. To insure complete filling of the tank, allow air to exit by
opening the nearest hot water faucet. Allow water to run
until a constant flow is obtained. This will let air out of the
water heater and the piping.
CAUTION
Never use this water heater unless it is completely
full of water. To prevent damage to the tank and
heating element, the tank must be filled with
water. Water must flow from the hot water faucet
before turning “ON” power.
4. Check all new water piping for leaks. Repair as needed.
WIRING FOR 3 WIRE LEAD WATER HEATERS
NON-SIMULTANEOUS OPERATION 240 VOLT
DOUBLE ELEMENT
Note: Some Lower Hi-Temp Limit switches may have 4 terminals. Use only
the 2 terminals on left.
RED
BLACK
BLACK
BLUE
BLUE
YELLOW
YELLOW
LOWER
HEATING ELEMENT
UPPER
HEATING ELEMENT
LOWER
HEATING ELEMENT
BLACK
RED
RED
BLACK
BLUE
YELLOW
TO ELECTRIC
POWER SUPPLY
UPPER
ELEMENT
UPPER E.C.O. &
THERMOSTAT
Wiring Diagrams
STANDARD WIRING FOR
2 WIRE LEAD WATER HEATERS
NON-SIMULTANEOUS OPERATION
240 VOLT DOUBLE ELEMENT
BLACK