Munchkin MUNCHKIN HIGH EFFICIENCY HEATER with the "925" Controller manual PART 4. VENTING, Danger

VENTING

PART 4. VENTING

DANGER

It is extremely important to follow these venting instructions carefully. Failure to do so can cause severe personal injury, death or substantial property damage.

A. APPROVED VENTING MATERIALS

Exhaust Vent and Extensions in Plastic 2", 3" and 4" Pipe Schedule 40 or 80.

1.Non Foam Core PVC Pipe

2.Non Foam Core CPVC Pipe

3.Non Foam Core ABS Pipe

Vent Piping must conform to following

1.PVC Non Foam Core Pipe (Polyvinyl Chloride) to ASTM D-1785 or D-1784 Class 12454-B, Formerly designated Type 1, Grade 1.

2.CPVC (Chlorinated Polyvinyl Chloride) Class 23447-B, Formerly designated Type IV, Grade 1 con- forming to ASTM D-1784.

3.ABS (Acrylonitrile-Butadiene-Styrene) Class 3-2-2-2-2 conforming to ASTM D3965.

DANGER

Foam Core Pipe is not to be used in connecting the exhaust pipe.

The Munchkin is a direct vent appliance. The Munchkin is listed as a Category IV Condensing Appliance. (The Munchkin Venting is rated at Zero Clearance to combustibles.)

Note: For Concrete construction or to meet certain fire codes, exhaust and inlet piping at the wall penetration to the Munchkin must be CPVC Schedule 40 or 80 to meet local fire codes. The balance from the penetrated wall to the outside, may be PVC Schedule 40 or 80.

Inlet Air Vent

Use the same material as used for exhaust in either 2", 3" or 4" Plastic Pipe. Cellular Foam Core Pipe may be used for the inlet only, NEVER ON EXHAUST PIPING!

WARNING

This vent system will operate with a positive pressure in the vent pipe. Do not connect vent connectors serving appliances by natural draft into any portion of mechanical draft systems operating under positive pressure.

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