Installation Instructions

23
Hose #8
Hose #7
Hose #7
Hose #7
Figure 28
COUNTERFLOW MODEL INSTALLED HORIZONTALLY WITH LEFT
SIDE DOWN (SEE FIGURE 29)
*Also see Front Cover Pressure Switch Tube Location on page
9.
Minimum 5 1/2" clearance is required for the drain trap be-
neath the furnace.
NOTE: For horizontal installations, some of the required hoses
are found in the factory-installed hose assemblies. Remove
the hose clamps to obtain the respective hoses needed for
installation, and install per the following directions.
1. Remove the factory installed drain trap and hose
assemblies. Leave the 100° elbow inserted and
clamped in the vent-drain elbow.
2. Remove two 1”plugs from left side of cabinet
3. (Draining the Collector Box) Remove the cap from the
left side of the collector box drain port (bottom in
horizontal left position) and install it on right side drain
port.
4. Place radius end of hose #4 (factory installed) on the
collector box drain port and secure with a silver clamp.
5. Insert hose #2 from outside the cabinet in the front
drain hole.
6. Connect hose #4 & hose #2 together using a straight
barbed coupling and two gold clamps (factory installed).
7. (Draining the Vent Elbow) Remove rubber plug from
vent – drain elbow side port.
8. The unused vent-drain elbow drip leg port must be
plugged to prevent flue gases from escaping. Insert
rubber plug removed in step 7 into the 100°elbow.
(Inserting a blunt tool such as a 3/16’’ Allen wrench
into the center of the rubber plug will stretch the plug
and allow complete insertion)
9. Place radius end of hose #4 on the side port of vent –
drain elbow and secure with a gold clamp.
10. Insert a ½” diameter PVC pipe (factory installed) into
hose #4 and secure with a gold clamp.
11. Insert the non-grommet end of hose #5 (factory
installed) from outside the cabinet in the back drain
hole.
12. Insert 100º elbow in hose #5 and secure with a red
clamp.
13. Locate hose #4 and cut a cut off a 4” straight section
and discard the radius end.
14. Connect the 4” straight section of hose #4 to the
100º elbow and the PVC pipe and secure with red
clamps.
15. Connect the hoses to the trap inlets and secure with
silver clamps, drain trap outlet must point to the
original bottom
of the furnace.
16. Using the two sheet metal screws provided in the
cabinet, secure the trap to the furnace.
17.Refer to Field Supplied Drain section for instructions on
field supplied / installed drain on outlet of furnace trap.
Hose #4
Hose #5
Hose #4
Hose #2
Figure 29