18-CD37D1-2-EN
27
Installer’s Guide
CONDENSATE DRAIN INSTRUCTIONS
The inducer housing has a secondary drain opening at its
9 o’clock position. Remove the plug and use the 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 45.
Connections must be made to an
OPEN/ VENTED DRAIN
.
NOTE: All condensate drain piping supplies included
with the furnace are intended for internal piping only and
should not be applied external to the furnace. All external
piping should use 1/2" size PVC pipe and fittings through-
out for drain connections (fittings, pipe and PVC solvent
cement not provided with furnace, must be field supplied).
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 APPLI-
CATIONS
. The standard arrangement is for the drain connec-
tion 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 Figure 44 is shipped
in the blower compartment.
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
repositioning 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 reconnecting the tubing to the lower con-
nection on the inducer housing. See Figure 45.
For horizontal installation, remove the condensate trap and
position the trap outside the cabinet through the slotted open-
ing 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).
▲
CAUTION
!
It is recommended that a drain pan be installed under the
furnace to prevent property damage or personal injury
from leaking condensate.
THE UPFLOW (VERTICAL) MAY BE INSTALLED
LEFT OR RIGHT SIDE CONDENSATE DRAIN
TO DRAIN
RIGHT SIDE
HEADER
UPFLOW FURNACE
(Vertical)
TO DRAIN
LEFT SIDE
HEADER
Figure 44
