HEATING AND COOLING
THOR MOTOR COACH | MADE TO FIT
99
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• At the beginning of the travel season, before each trip,
and periodically during the travel season, test the combi-
nation 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
your 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 passage-
ways of the appliance be kept clean and unobstructed.
• e furnace motor is permanently lubricated and
requires no oiling.
• Keep the furnace area clear of any combustible materi-
als, 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 you smell gas. Do not assume
that the smell of gas in your motorhome is normal. Any
time you detect the odor of gas in you motorhome,
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 attempt to repair the furnace by yourself or by
an unqualied person.
• Never restrict the ducting installed by the RV man-
ufacturer. 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
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.
DANGERDANGER
Read and follow all safety warnings afxed to the Aqua-
Hot boiler unit and published in the manufacturer’s
manual.
WARNINGWARNING
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. e 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 Re-
source, The TMC HVAC System Guide, or visit the
manufacturer’s web site.
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