Furnace - Airstream Caravanner 1977 Owner's Manual

Furnace
The Airstream furnace is an American Gas
Association approved Suburban unit with
an electronic ignition designed specifically
for travel trailers. It has a sealed combus¬
tion system with a dual blower for maxi¬
mum air circulation. One blower circulates
room air while the other draws in air for
combustion. The adjustable louvered heat
registers control warm air flow while cold air
returns through the galley cabinet toe kick
opening.
The heat duct system also circulates warm
air around the holding tank, water tank, and
one-stop-service center, a vital feature
when operating in below freezing weather.
The Suburban furnace is thermostatic¬
ally controlled.
When the thermostat calls
for heat, the blower starts and only after it
has reached nearly full speed will the
burner light. After the temperature set on
the thermostat is reached the blower will
continue to run for a short time removing
most of the remaining heat from the fur¬
nace as well as forcing the combustion
gases from the heat exchanger. To turn the
furnace off for an extended period of time
turn the thermostat and the gas valve to
their "OFF" positions. The gas shut-oft valve
is outside the trailer below the furnace.
Operating instructions are printed inside
the furnace door.
Trouble-free operation of the Suburban
furnace will depend on your adherence to
recommended operating procedures and
precautions. Corrections of possible mal¬
functions presented here will be helpful,in
Furnace Thermostat
an emergency situation, but servicing
should be done by a dealer. One note of
caution regarding flue gases: they are
vented from the furnace to the outside of
the trailer through a vent in the outside wall.
Do not in any way obstruct this vent by
placing clothing or other flammable ma¬
terial on the vent assembly.
Check it often
to make certain it does not become
clogged.
To start the furnace:
1. Turn main gas valve to full "ON" position.
2. Set thermostat to desired temperature.
3. The main burner will normally light within
3-4 seconds, not exceeding 15 seconds.
4. If burner does not light, set thermostat to
"OFF," wait 120 seconds and try again for
ignition.
5. If, after three tries, the burner does not
light, turn the main gas valve and the
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