14
18-CD19D5-10
Installer’s Guide
CONDENSATE DRAIN INSTRUCTIONS
plug to cover the hole at the 6 o’clock position. Reposition the
inducer drain tube from 6 o’clock to the 9 o’clock location. Cut
and reattach the tube to the canister trap. Plug openings in
blower deck, inducer and blower section. See Figure 18.
Connections must be made to an OPEN/VENTED DRAIN.
Refer to illustrations of typical connections. Outdoor draining
of the furnace and coil condensate is permissible if allowed by
local codes.
Caution should be taken to prevent drains from freezing
or causing slippery conditions that could lead to personal
injury. Excessive draining of condensate may cause
saturated ground conditions that may result in damage
to plants.
NOTE:
Use 1/2" size PVC pipe and fittings throughout for drain connec-
tions (fittings, pipe and PVC solvent cement not provided).
NOTE:
A corrosion resistant condensate pump must be used if a
pump is required for a specific drain system.
Knock outs are provided on the left and right hand side of both
furnace cabinets for drain connections IN VERTICAL APPLICA-
TIONS. The standard arrangement is for the drain connection
on the left side. The tubing may have to be trimmed in this
application to avoid kinking.
The upflow (vertical application) has provisions for right
side drain connections by turning the trap and extending the
tubing to the lower right front corner of the furnace. Trim all
excess tubing to avoid kinking. The connecting tubing for left or
right side condensate drain shown in Figures 16 & 17 is shipped
in the blower compartment.
The downflow (vertical application) may be right side drain
by removing the drain lines and rotating the trap from left to
right, reconnecting the lines, and running 1/2" CPVC pipe from
the trap to the right side knock out just over and above the
burner section ( Use RTV high temperature silicone sealant to
connect the CPVC pipe to the trap for ease of removing and
cleaning the trap). See Figure 19.
It is recommended that a drain pan be installed under
the furnace to prevent property damage, personal
injury or death from leaking condensate.
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▲
CAUTION
!
It is always recommended that an auxiliary drain pan be
installed under a horizontally installed evaporator or 90% gas
furnace. Connect the auxiliary drain line to a separate drain line
(no trap is needed in this line).
All horizontal applications are left side only and require reposi-
tioning the condensate canister trap to the exterior of the
cabinet. Additionally the drain tubing connected to the inducer
housing must be repositioned for removing the plug and recon-
necting the tubing to the lower connection on the inducer
housing. See Figure 18.
For horizontal installation, remove the condensate trap and
position the trap outside the cabinet through the slotted opening
next to the secondary cell. On upflow/horizontal models, remove
lines from the blower section and pull through the blower deck.
Cut and reattach the line from the secondary cell (use the spring
to prevent kinking). The inducer housing has a secondary drain
opening at its 9 o’clock position. Remove the plug and use the
TO DRAIN
LEFT SIDE
VERTICAL UPFLOW – LEFT SIDE CONDENSATE
DRAIN CONNECTION
ALL HORIZONTAL APPLICATIONS
ARE LEFT SIDE DRAIN ONLY
(TYPICAL UPFLOW FURNACE SHOWN IN HORIZONTAL)
TO
OPEN/
VENTED
DRAIN
VERTICAL UPFLOW – RIGHT SIDE CONDENSATE
DRAIN CONNECTION
TO DRAIN
RIGHT SIDE
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