Section 3, Installing the Exhaust System
3-2 The Oasis
®
SCH33™ Installation Manual
3.2 Mounting Location
If all technical specifications for mounting the exhaust
cannot be met, don’t use the Oasis SCH33. The heater may
perform poorly or be damaged if it is not installed
according to specifications.
Recommended Exhaust Outlet Locations
The following are recommended for exhaust outlet locations:
• Mount the exhaust outlet outside of the heater
compartment. Be aware that exhaust fumes could infiltrate
the vehicle if the exhaust is not vented correctly.
• In a typical vehicle installation the exhaust runs from the
bottom of the heater, through the floor and exits from
either side of the vehicle. Excluding the 90° bend from the
heater and without any additional 90° bends, the exhaust
run cannot exceed 12’. A 90° bend within the exhaust run
reduces the total allowable exhaust length by 2 feet. For
example, if after the 90° bend exiting the heater, the
exhaust run includes one 90° bend, the total exhaust run
cannot be longer than 10 feet.
• The outlet of the exhaust pipe must be located so the
exhaust exits directly out from under the vehicle and does
not accumulate under the vehicle. Exhaust outlets cannot
be located under an opening window, inlet vent or a slide-
out.
Recommendations for Installation
• Combustion air must be drawn directly from outside the
vehicle using the supplied air intake hose. An (optional) air
intake silencer can be used (ITR part # 10455) see figure
3.1
• If an exhaust muffler is required, use an ITR-manufactured
muffler (part # 13006-M) with a straight-through design.
No other muffler is acceptable.
The exhaust and outlet are HOT and the surrounding
areas must be thermally shielded and protected from hot
surfaces and heat build-up. Nothing can come into
contact with any part of the exhaust system.
• Install an exhaust collar into the floor of the vehicle to
isolate the hot exhaust fittings, attached to the heater,
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