HEATING AND COOLING
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14
THOR MOTOR COACH | MADE TO FIT
• At the beginning of the travel season, before each trip, and
periodically during the travel season, test the combination
CO/LP detector for proper function. Immediately repair
or replace malfunctioning CO/LP detectors.
• Inspect furnace venting. Venting must be free of
obstructions, absent of soot, and properly terminated
to the exterior of the motorhome. Make sure that the
vent assembly is positioned tight against outer door.
• Periodically inspect the exhaust vent for soot. Soot is
formed whenever combustion is incomplete. is is a
visual warning that the furnace is operating in an unsafe
manner. If soot is present, immediately shut furnace
down and arrange for repairs by a qualied service
center or technician.
• Keep furnace clean. More frequent cleaning may be
required due to excessive lint from carpeting, bedding
material, pet hair, etc. It is imperative that the control
compartment, burners, and circulating air passageways
of the appliance be kept clean and unobstructed.
• The furnace motor is permanently lubricated and
requires no oiling.
• Keep the furnace area clear of any combustible materials,
ammable liquids, or vapors.
• Before operating furnace, check the location of the
furnace vent to make sure it will not be blocked by the
opening of any door or obstacle. Do not operate the
furnace if the vent is blocked or obstructed in any way.
• Do not restrict the ow of combustion air or the warm
air circulation of the furnace. To do so could cause
furnace malfunction, leading to personal injury and/
or death.
• Never operate the furnace if the smell of propane gas
is detected. Do not assume that the smell of gas in the
motorhome is normal. Any time the odor of propane
gas is detected, consider it life threatening and correct the
problem immediately. Extinguish all open ames; evacuate
the motorhome; shut o the LP gas supply at the tank.
• Immediately shut furnace down and call a service
technician for repairs if the furnace cycles erratically
or delays on ignition.
• Never allow an unqualied person to attempt furnace
repairs.
• Never restrict the ducting installed by the RV manufac-
turer. To do so could cause improper furnace operation.
• Do not install air boosters (fans) in the duct system.
Such devices will cause the furnace to cycle on limit
and to have erratic operation.
• Do not place clothing or other ammable materials on
or near the furnace.
• Always follow operating instructions. Do not deviate
from step-by-step instructions.
• Do not use petroleum or citrus type cleaner on plastic
parts, as damage may occur.
Hydronic Heating System
Select TMC diesel motorhomes are equipped with an
Aqua-Hot
®
Hydronic Heating System. is low-emissions
system uses hot water to heat the cabin and bay areas of
the motorhome. The Aqua-Hot Heating System is three
systems in one:
• Interior Heating System: provides quiet, comfortable
interior heat with independent temperature zones that
provide cabin-wide even temperature control.
• Bay Heating System: keeps pipes and tanks from freezing
in the bay storage area.
• Tank-less Hot Water System: provides a steady ow of
continuous hot water.
NOTE: Detailed information regarding hydronic heat-
ing systems is not covered in this manual. Refer to the
manufacturer’s owner’s manual included with your TMC
Owner’s Packet, the on-line TMC Owners Resource, The
TMC HVAC System Guide, or visit the manufacturer’s
website.
Read and follow all safety warnings afxed to the Aqua-
Hot boiler unit and published in the manufacturer’s
manual.
WARNING
The heaters (both diesel and electric) must be switched
OFF when refueling the motorhome.
DO NOT operate the Aqua-Hot’s diesel-burner inside an
enclosed building.
DANGER
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