HORIZONTAL APPLICATIONS
Upflow and Downflow furnaces - All horizontal ap- plications are left side only. It is always recommended that the auxiliary drain pan be installed under a hori- zontally installed evaporator and/or 90% gas furnace. Connect the auxiliary drain pan to a separate drain line (no trap is needed in this line).
&
Left side
UPFLOW (VERTICAL)
*
Use
extension hose here
UPFLOW HORIZONTAL 21" & 24" UNITS
(Left side only)
The trap must be repositioned to the exterior of the cabinet. Remove the trap from its present location and reposition the trap outside of the unit, through the long circular hole, next to the secondary recuperated cell. Remove the larger drain line (from the secondary cell) and trim to fit between the secondary cell and the new trap location. On upflow units, plug the hole in the blower deck where the tube went through.
Remove the hose from the induced blower and reposi- tion into the other drain tap of the inducer, which is lo- cated 90° clockwise around the inducer. Move the cap from that drain tap to the unused drain tap. On upflow units, plug the hole in the blower deck where the tube went through. This tube on downflow units will need to be cut to fit between the inducer and the trap. On upflow units, this tube may need to be extended, using the tubing shipped with the furnace.
Installer’s Guide
(
Left side
DOWNFLOW (VERTICAL)
)
Right side
Use CPVC tubing from Trap outlet,
over burner box to cabinet exit
DOWNFLOW (VERTICAL)
Q
Cut off curved end of
Inducer drain hose
DOWNFLOW (HORIZONTAL)
Connections must be made to an OPEN/ VENTED DRAIN. Outdoor draining of the furnace and coil con- densate is permissible if allowed by local codes. Caution should be taken to prevent drains from freezing or caus- ing slippery conditions that could lead to personal in- jury. Excessive draining of condensate may cause satu- rated ground conditions that may result in damage to plants.
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