506303-01 Page 17 of 40Issue 0938
6. From the tee, connect the drain to disposal area. The top
of the tee must be left open for proper condensate
drainage. The open end of the tee must be oriented so
that condensate does not run out of the opening.
7. Remove 72" vinyl hose supplied with unit and cut in half.
Connect one end of the vinyl hose to the 3/8" barbed
fitting of the 2" x 2" x 1/2" tee in vent and the other end to
the 3/8" barbed fitting on the drain trap assembly.
Horizontal Installation – Left to Right Airflow
Furnace must be mounted such that the side through which
the condensate will drain is elevated a minimum of 9" above
a surface such as a floor.
Install unit at a slight pitch forward (see Figure 22).
1. Relocate 1/2" NPT plug installed on flue pan to one side
of the internal trap assembly (as shown in Figure 23).
2. Connect the 1/2" NPT plug (supplied) to the opposite
side of the internal trap assembly from the plug installed
in Step 1.
3. Insert trap assembly (supplied) into flue pan (see Figure
24).
4. Connect a length of 3/4" PVC pipe (3' minimum) to the
trap assembly (see Figure 21).
5. Install 3/4" tee (supplied) as shown in Figure 21.
4. Connect a length of 3/4" PVC pipe (3' minimum) to the
trap assembly (see Figure 25 on page 18).
Completing Condensate
Drain Installation
3/4" Tee
3/8" Vinyl Hose
(supplied)
Be sure to avoid double-trapping the vinyl hose. Hose must
be installed as shown.
Figure 21
Figure 22
Tilt Unit Forward
Figure 23
Insert Plugs
Figure 24
Install Trap Assembly
1/2” NPT x 1/2” PVC
Adapter and Trap Assembly
(supplied)
Flue Pan
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