18-CD29D1-11
27
Installer’s Guide
HORIZONTAL APPLICATIONS
Upflow and Downflow furnaces - All horizontal appli-
cations are left side only. It is always recommended that
the auxiliary drain pan be installed under a horizontally
installed evaporator and/or 95% gas furnace. Connect the
auxiliary drain pan to a separate drain line (no trap is
needed in this line).
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 reposition
into the other drain tap of the inducer, which is located 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. On upflow
units, this tube may need to be extended, using the tubing
shipped with the furnace.
Connections must be made to an
OPEN or VENTED
DRAIN
. Outdoor draining of the furnace and coil conden-
sate is permissible if allowed by local codes. Caution should
be taken to prevent drains from freezing or causing slip-
pery conditions that could lead to personal injury. Excessive
draining of condensate may cause saturated ground condi-
tions that may result in damage to plants.
UPFLOW
(VERTICAL)
Left side
Use exten-
sion hose
here
UPFLOW HORIZONTAL 21" & 24" UNITS
(Left side only)
^
&
DOWNFLOW (VERTICAL)
Left
side
Use CPVC tubing from Trap outlet,
over burner box to cabinet exit
DOWNFLOW (VERTICAL)
Right
side
Cut off curved end of
Inducer drain hose
DOWNFLOW (HORIZONTAL)
*
(
)
