Monaco 2009 Knight Owner's Manual page 95

Heating Water with Propane:
Turn on the Propane.

Press the water

heater 12 Volt
switch, the indicator
will glow. If the
DSI (Direct Spark
Ignition) fault light
illuminates this will
indicate lockout. Press the switch twice
to reset the ignition cycle. If problem
persists, consult a qualified technician.
NOTE
Propane 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 propane while the
motorhome is in transit. Be sure the
water heater is off before refueling.
WARNING
Before beginning any service or work
on the water heater make sure the
propane 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.
Direct Spark Ignition (DSI):
Direct Spark Ignition (DSI) means an
automatically lit water heater. There is no pilot
flame and the burner lights by turning on the
12 Volt gas water heater switch.
NOTE
Due to a possible problem (air or
obstruction) in the propane lines, the
water heater burner will attempt three
ignition cycles. If the burner does
not light after the third attempt, the
propane function will lock-out and the
DSI (Direct Spark Ignition) fault light
will illuminate. Reasons for lockout
may be air in the gas system or burner
060306j
tube obstructions caused by an insect
or spider web. Cycling the 12 Volt gas
water heater switch ON and OFF will
reset the internal ignition board. If
problem persists consult a qualified
technician.
High Temperature Thermostat:
Seperate thermostats are used for propane
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
040405f establishing the air pocket.
Turn Off the water heater.

Turn Off the incoming water supply.

Open the hot water faucet closest to the

water heater.
031322
91