APPLIANCES - 4
CAY M A N 2 0 0 7
90
Heating Water with 120 Volt AC:
Have either shore power (preferred) or
the generator supplying AC voltage.
Press the water heater switch.
NOTE:
It is not fuel efficient to use the
generator to operate the water heater on
120 Volt AC.
Heating Water with LP-Gas:
Make sure the LP-Gas is turned on.
Press the LP-Gas water heater switch.
The indicator lamp will glow steady. A
ashing lamp will indicate lockout. Press
the switch twice to reset the ignition
cycle.
NOTE:
LP-Gas and 120 Volt AC functions can
be on at the same time. This will speed
up the process of heating water for large
volume use.
CAUTION:
It is recommended not to operate the
water heater on LP-Gas while the
motorhome is in transit. Be sure the
water heater is off before refueling.
NOTE:
Due to potential air in the LP-Gas lines,
the water heater will attempt three
ignition cycles. If the burner does not
light after the third attempt, the LP-
Gas function will lock-out. Reasons for
lockout may be air in the gas system or
burner tube obstructions caused by an
insect or spider web.
High-Temperature Thermostat:
Separate thermostats are used for LP-Gas
and AC electric. If a thermostat fails, a high-
temperature safety limit switch will open.
CAUTION:
If the high-temperature safety limit
should open, discontinue using the
water heater. Have the water heater
inspected by a qualified technician
to determine the cause of the over
temperature condition.
Water Heater Bypass Valve:
The bypass valve is located at the back of the
water heater. Turning the valve to the bypass
position prevents water from entering the water
heater. Turn the valve to the bypass position
when winterizing. For normal operation, turn
bypass valve to normal ow.
Pressure & Temperature Relief Valve:
The water heater is equipped with a Pressure
& Temperature (P & T) relief safety valve.
The P & T valve is designed to open if water
temperature in the tank exceeds 210° F (98.8°
C) or internal pressure exceeds 150 psi. If water
begins to weep from the valve, it may be due
to a loss of the air pocket in the tank and not
a defective valve. See re-establishing the air
pocket.
Re-establishing the Air Pocket:
Water may weep from the P & T valve under
normal operation. This is not necessarily a faulty
valve but more likely caused by lack of an air
pocket and water expansion. The water heater
tank is designed with an internal air pocket.
Eventually, the cyclic expansion of water will
absorb the air pocket. When weeping from the
valve occurs, the air pocket will need to be
re-established utilizing the following procedure.
If the valve continues to weep after establishing
the air pocket, contact a quali ed service center
to evaluate the valve.
CAUTION:
Ensure the water heater is cool prior to
establishing the air pocket.
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