Section 3, Installing the Exhaust System

5Connect the flexible air-intake tubing (2” I.D.) to the air- intake fitting on top of the heater. Use a #32 gear clamp to attach the tubing to this fitting.

The other end of the air-intake hose can be installed in 2 configurations:

Installation of the air-intake adapter to the underside of the RV

Locate a suitable location to mount the air-intake adapter. Drill a 2” hole through the floor. Insert the adapter from underneath and use 3 screws to secure against floor. The air entrance of the air-intake assembly shall be guarded or shielded to exclude rain, snow and debris. Use a #32 gear clamp to attach the tubing to this adapter. Ensure the run of tubing is as short as possible to facilitate air flow. See figure 3-1.

Installation of the air-intake adapter to the side of the RV

Locate a suitable location to mount the air-intake adapter. Drill a 2” hole through the side wall (minimum ¼”, maximum 2” wall thickness). Insert the adapter and use 3 screws to mount against side wall. Use a #32 gear clamp to attach the tubing to this adapter. Ensure the run of tubing is as short as possible to facilitate air flow. See figure 3-1.

6Secure both ends of the air-intake tubing with properly sized hose clamps to prevent air leaks.

7Make sure the air-intake and exhaust hoses have no leaks and are not touching each other.

8Protect the air-intake entrance from water and dirt with a guard or shield.

9On a yacht, make sure the thru hull is at least 30” above the waterline and the exhaust must be goose-necked, see Figure 3-3: The Exhaust Goose Neck Configuration.

International Thermal Research

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