Tiffin Motorhomes 2015 Phaeton, Owner'S Manual, Page: 35 / 158

28
HEATING & AIR CONDITIONING
FURNACE
The Phaeton is equipped with a forced-air
furnace fueled by LP gas. The furnace is
controlled by the wall-mounted thermo-
stats (Figure 3-4) located inside the moto-
rhome (one in the front of the motorhome;
the other in the master bedroom).These
thermostats control both the heating and
air conditioning for the motorhome.
In the gas heating mode, the furnace heats
air which, in turn, is circulated through
ductwork in the floor of the motorhome. If
any obstruction(s) block the floor vent(s)
or air-return register, then the furnace will
not function properly. Any items stored un-
der the cabinets should be carefully stowed
to prevent damaging or crushing the furnace ducting or blocking the warm-air return.
When a furnace is being used for the first time, there may be an initial “burn-off” of manufacturing
compounds or residues left on the heat exchanger or in the ductwork which could produce odors,
fumes, and possibly some smoke. This is normal and should not cause concern, unless it persists for
an excessive amount of time.
To minimize the after-effects of this “burn-off” process, the initial use of the furnace should be done
with all the doors and windows open to permit normal air circulation to dissipate these odors and
fumes.
For routine operation of the furnace, set the thermostat to the desired temperature setting and then
turn the thermostat to gas heat. In about a minute, the furnace should begin to operate and warm or
hot air should be coming through the ductwork.
Figure 3-4: Thermostat
NOTICE
NEVER attempt to modify the furnace. To do so may cause fire, explosion,
carbon monoxide poisoning or asphyxiation. If the furnace is malfunction-
ing, immediately shut the unit “off” and call a trained service technician as
soon as possible.