HEATING AND COOLING
THOR MOTOR COACH | MADE TO FIT
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Most TMC motorhome models are equipped with a
propane-red, forced-air furnace, appropriately sized for
the living space of the motorhome. Also, depending on
the size of the living space, the heating system may have
multiple registers that facilitate even heating throughout.
With a forced-air system, there will be one, centrally locat-
ed thermostat used to control the air temperature of the
motorhome.
Select Class A motorhomes are equipped with a hydronic
heating system. is system uses a diesel-fueled, or with
some models, a gas burner (with a supplemental electrical
heating element) to heat a volume of uid (which con-
tains special properties), that is circulated to zoned heat
exchangers located throughout the motorhome. e hot
uid enters the heat exchangers, where the uid passes
through a series of coiled tubing. As the coils rise in tem-
perature (due to the hot uid passing through), a fan blows
ambient air across coils, heating the air, which is directed
to the living space of the motorhome. Heating zones are
separately controlled by individual thermostats, so that the
air temperature of specic areas of the motorhome can be
individually controlled.
Detailed information regarding the heating and cooling
equipment that is uniquely specic to your motorhome
is not covered in this manual. Please review and retain all
manufacturer’s owner’s manuals and documentation that is
included with your TMC Owner’s Packet. e manufactur-
ers of the heating and cooling equipment installed in your
motorhome are the best source for information regarding
component features, operation, and maintenance.
For safe heating system operation, please follow all safety
warnings pertaining to the furnace, hydronic system (if
installed), propane system and electrical system printed
in all manufacturer’s documentation and labels attached
to your motorhome. It is also recommended that you read
the Propane Systems Guide and become familiar with the
entire propane system of your motorhome. If you have
questions regarding your heating and cooling system.
TMC Customer Care representatives are also available to
answer any question you may have; call, toll free at:
877-855-2867
Furnace Operation (propane, forced-air type)
e furnace supplied with your motorhome is equipped
with an electronic ignition. Never attempt to light the
burner by hand.
Before operating the furnace, smell all around the appliance
area for gas. If gas is detected, either by smell or by the CO/
LP alarm, DO NOT attempt to operate the furnace. For
your safety, gas leaks MUST be repaired before operating
any gas or electrical appliance.
WHAT TO DO IF YOU SMELL GAS
• Extinguish all open ames.
• Evacuate all persons and pets from the vehicle.
• Shut o the gas supply at the LP gas tank.
• Do not touch electrical switches or operate electrical
devices.
• Contact nearest gas supplier or qualied service tech-
nician for repairs.
• Do not turn on gas supply or operate gas or electrical
devices until the gas leak has been repaired.
Typical forced-air
furnace installation
Hydronic system main
unit, typically installed
in a service bay of the
motorhome
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