Armstrong World Industries 242, 243, 302, 122, 123, 203, 182, 183 manual 2 HWC Drain Installation

Service Reference Manual INSTALLATION

6-7

Condensate Drain (HWC Models)

Install the plastic drain tube (furnished) over the 5/8" O.D. fitting welded to the center of the condensate pan. Connect the other end of the drain tube to the open trap (see Figure 6-2). The plastic drain connection is provided so that it may be disconnected from the permanent drain tubing in the building in the event it becomes necessary to remove the cooling chassis assembly.

The drain line should pitch gradually downward at least 1" per 10 feet of horizontal run to the open drain trap.

Be certain that the plastic drain tube has free drainage and is not crimped or flattened at any bend.

Alternative Method

To Open Drain Trap

Return Air Duct

5/8" I.D.

Plastic Tube (Furnished)

FIGURE 6-2 HWC Drain Installation

Drain Pan

Top of Drain Tube

Must be Below

Bottom of Drain Pan

Drain Tube - Pitch 1" for every 10 ft. (Installer Supplied)

Open Drain Trap

Venting

The venting system is an integral part of the appliance. The venting system must not be modified or added on to.

HW/HWC units are direct vent forced air central furnaces which draw fresh air from outside through a combustion air opening beneath the vent into the combustion chamber. The combustion products are then drawn out of the heat exchanger by an exhaust fan and are forced to the out- doors.

No special provisions are required for supplying combustion air.

The vent outlet must not be altered or extended in any way.

This appliance should be installed in a location such that the vent system complies with the National Fuel Gas Code Z223.1 or CAN/CGA-B149.1 &

.2.

SRM-HW/HWC 8/99