applIances —
90
2 0 0 8 K n I G h t
Heating Water with LP-Gas:
Turn on the LP-Gas.
Press the water heater
12 Volt switch, the
indicator will glow.
If the DSI fault light
illuminates this will
indicate lockout.
Press the switch twice
to reset the ignition
cycle. If problem persists consult a
qualified technician.
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 and DSI
fault light will illuminate. Reasons for
lockout may be air in the gas system
or burner tube obstructions caused by
an insect or spider web. Cycling the
12 Volt switch will reset the ignition
board. If problem persists consult a
qualified technician.
WARNING
Before beginning any service or work
on the water heater make sure the LP-
gas is turned off, the 120 Volt AC
source has been disconnected and
the 12 Volt DC source has been
disconnected. Failure to do so can
result in explosion, fire or injury.
High Temperature Thermostat:
Seperate 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 flow.
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 qualified service center
to evaluate the valve.
CAUTION
Ensure the water heater is cool prior
to establishing the air pocket.
1. Turn Off the water heater.
2. Turn Off the incoming water supply.
3. Open the hot water faucet closest to the
water heater.
4. Open the handle of the P & T valve.
5. Allow excess water to drain from the
water heater through the P & T valve.
When draining is complete, close the P
& T valve by allowing it to snap shut.
Close the faucet and turn on the water
supply.
6. Turn on the water heater.
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