Oasis Concepts Diesel and AC Heating System for Recreational Vehicles and Yachts User Manual
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Section 3, Installing the Exhaust System
• In a coach, the typical mounting location for the exhaust
outlet is under the floor of the Oasis™ Heating Module
compartment, or on the other side of the coach, directly
across from the module. Keep in mind you cannot exceed 12’
of exhaust piping, without any bends, or 8’ with two 90°, 2”
minimum radius bends.
• Position the outlet of the exhaust pipe so that the exhaust
exits off the side of the coach, not directly underneath the
coach or under an opening window, vent or slide-out.
In a yacht installation, the following is recommended for the exhaust
outlet location:
• Mount the exhaust thru hull so that the exhaust fumes cannot
enter or re-infiltrate any living areas.
• Make sure that the thru hull is at least 30” above the water
line with a goose neck rise on the exhaust to help eliminate
water from getting to the Oasis™ Heating Module through the
exhaust. If the dual exhaust air-intake thru hull is used,
ensure that the air-intake is placed between 10 o’clock and
2 o’clock and also goose-necked to avoid water ingestion, see
Figure 3-3: The Exhaust Goose Neck Configuration.
• There needs to be a 1/8" air gap around the exhaust thru hull.
The standard thru hull is 4" in diameter. The hole for the
fitting should be 4-1/4". Make sure that the holes for the
mounting screws have enough material left to properly bite.
The fitting must be centered in the hole.
Recommendation for Installation
The following applies to both a coach and yacht:
• You may use sweep bends but each 90° bend is equivalent to
two foot of exhaust piping. For example, if you use two 90°
bends you must deduct two foot per bend from the maximum
allowed 12’ straight exhaust pipe length. Therefore you will
be restricted to 8’ of straight exhaust piping plus the two
bends. Do not exceed these recommendations.
• The combustion air must be drawn from outside the coach or
yacht. The maximum length of the air-intake tubing is 7 feet.
Do not exceed this recommendation.
3-2
The Oasis™ Heating Module