Johnson Controls TM9V MP installation manual UIM-B-0509, Condensate Drain Termination

438335-UIM-B-0509

Exhaust Pipe

Combustion Air Pipe

Tee with Drain Trap

Trap

Connect to Drain

FIGURE 23: Typical. Combustion Pipe Drain Tee.

CONDENSATE DRAIN TERMINATION

A condensate sump pump MUST be used if required by local codes, or if no indoor floor drain is available. The condensate sump pump must be approved for use with acidic condensate.

DO NOT terminate condensate drain in a chimney, or where the drain line may freeze. The line must terminate at an inside drain to prevent freezing of the condensate and possible property damage. DO NOT trap the drain line at any other location than at the conden- sate drain trap supplied with the furnace.

CONDENSATE DRAIN TRAP AND DRAIN FREEZE PROTECTION

Special precautions MUST be made if installing furnace in an area which may drop below freezing. This can cause improper operation or damage to the equipment. If the furnace is installed in an area that has the potential of freezing, the drain line must be protected. Use a 3 to 6 Watt per foot at 115 vac, 40ºF (4.4°C) self-regulating, shielded and waterproof heat tape. Wrap the drain line outside of the furnace with the heat tape and secure with ties. Follow the heat tape manufacturer's rec- ommendations.

Liquid anti-freeze will cause damage to internal plastic parts of this furnace. DO NOT attempt to winterize the furnace using liquid anti-freeze.

Johnson Controls Unitary Products 17