Water Heater - Airstream Excella 1975 Owner's Manual

Water Heater
The Bowen Gas Water Heater is equipped
with a Robertshaw 100% shut-off safety valve
which shuts off the gas supply if the pilot
flame is extinguished or the water tempera¬
ture becomes excessively hot. It is lighted and
serviced from the outside through an access
panel at the roadside, rear, of the trailer.
Procedure for lighting or relighting:
1. Be sure the water heater is filled with water.
Open the hot water faucet at the sink and
when the water flows, the heater is full.
2. Turn manual gas valve, on the lower
exterior of the trailer below the water
heater, to the "ON" position.
3. Turn the gas valve knob (A) to the "OFF"
position and the temperature indicator
dial (B) to the lowest temperature
position.
4. Wait sufficient length of time to allow gas,
which may have accumulated in the
burner compartment, to escape (approxi¬
mately five minutes).
5. Turn gas valve knob (A) to "PILOT".
6. Depress and hold the red reset knob (E)
and push the lighter (D) in and turn until
the pilot flame ignites. This may take
several turns of the knob. Or you may
light it with a match.
7. Keep the reset knob depressed for one-
half minute after the pilot flame ignites.
8. Turn the gas cock knob to "ON".
9. Set the temperature indicator dial to the
desired water temperature.
10. To shut down the water heater, turn the
gas cock knob to the "OFF" position.
Water Heater Access Panel
Pilot Flame Adjustment
If the pilot flame does not have a small orange
tip, the pilot is not getting enough gas. The
flame should be about 1/4 inch in vertical
height when the water in the tank is cold and
the burner is off, 1/4 to 3/8 inch in horizontal
length when the tank is warm.
A large orange flame indicates excessive gas
supply, which will result in short pilot life and
early replacement. The pilot has been proper¬
ly adjusted at the factory and should operate
with a blue, orange tipped flame enveloping
the pilot thermocouple. Removal of the pilot
adjustment cap (C) in the lower right comer
of the control will reveal the pilot adjustment
screw. Turning this screw clockwise reduces
the flow of gas to the pilot (blue flame) and
counter-clockwise, the gas supply will increase
(orange flame). Always replace the Pilot
Adjustment Cap to prevent gas leakage.
Water Heater Controls and Drain Valve
Air Shutter Adjustment.
All fuels depend upon air (oxygen) to give
them proper burning characteristics. A
yellow, smoking flame indicates a lack of air
and a noisy hard blue flame indicates too
much air. The air shutter slides back and forth
along the burner tube and is held in place by a
small shutter adjustment screw (D). Loosen
the screw for adjustment. A good method of
adjusting the air shutter is to slide the shutter
to the right until yellow tipping occurs on the
main burner flame (not the pilot) and then
slowly slide the shutter to the left until all
signs of yellow tipping are gone. When proper
adjustment has been obtained, tighten the
screw holding the air shutter. The outside
access door must be kept firmly locked for
proper operation.