Side Return Furnace Installation - Trane FD145CLFR000D Installation Operation & Maintenance

4. Apply transitions or spacer as required to clear flue
piping and to ensure the opening of the air cleaner
matches the opening in the furnace.
Position the air cleaner on the return opening of the
furnace with the air cleaner cabinet gasket against the
furnace. Check that the front of the air cleaner cabinet
is facing the front of the furnace.
5. Align the rear of the air cleaner flush with the rear of
the indoor unit.
6. Align the sides of the cabinet with the sides of the unit.
7. The front of the cabinet will NOT align flush with the
front of the unit.
8. Securely fasten the unit using the self-tapping sheet
metal screws provided. See Figure 16.
9. Reinstall the FIELD CHARGER and lock into place by
bending one locking tab on the cabinet. See Figure 18.
10. Reinstall the PRE-FILTER and COLLECTION CELLS.
11. Each COLLECTION CELL must be oriented with the
handles toward the front.
12. The door can be installed in either direction. Deter-
mine which direction will best allow access to the
latches and 24 Volt power cord. Insert the 2 tabs on the
door into the slot in the cabinet flange and rotate the
door into the closed position. Rotate the two quarter-
turn latches on the Power Door inward. See Door
Operation, Section C.
NOTE: The door has a safety switch to ensure power is
interrupted when the door is removed. This switch is
open when the door is removed from the cabinet. When
the door is properly installed, an actuator tab located in
the cabinet will close the switch, allowing power to the
electronics.
13. Remove stickers (two stickers both are 5.5" x 7.5")
from the packet and attach to furnace, air handler, or
ductwork in a location visible to the homeowner.
14. Demonstrate Maintenance (Section H) and Door
Operation (Section C) to the homeowner.

SIDE RETURN FURNACE INSTALLATION

14.5" & 17.5" MODELS ONLY
NOTE: The 21" and 24 1/2" air cleaner cabinet heights
require a transition between the air cleaner cabinet and
the Furnace in side return applications.
NOTE: Do NOT install the air cleaner cabinet on the
side of an air handler.
NOTE: It is recommended that sheet metal turning
vanes be installed inside an elbow on ductwork at-
tached to the entering airstream side of the air cleaner.
See Figure 9 on Page 4.
1. Rotate the two quarter turn latches on the Power Door
outward then rotate the Power Door to remove it from
the cabinet. Remove the PRE-FILTER, FIELD
CHARGER, and both COLLECTION CELLS. Set the
components aside until the cabinet is installed and the
indoor unit is in place.
2. Install the self-adhesive gasket material on the side of
the air cleaner cabinet flange that will mate with the
indoor unit. This flange has a double set of holes. See
Figure 21
.
Pub. No. 18-HE53D1-11 Numbers in [brackets] are for 50 Hz international systems.
Installer's Guide
3. On a protective pad, lay the indoor unit on its side.
Position the furnace with the return air side of the
cabinet facing up.
4. Align the bottom of the air cleaner cabinet 1/4" ABOVE
the bottom of the furnace and flush with the rear of the
furnace.
Use inner
mounting holes
for Side Installation
Install gasket material.
Cut to length required.
Figure 21 Side Installation Details
5. Mark the inside of the opening in the air cleaner
cabinet on the side of the furnace using the inside
edge of the air cleaner cabinet as a guide. Remove the
cabinet and cut the opening in the side of the furnace.
NOTE: Do NOT use the standard furnace indents for the
opening. The opening for the air cleaner must be larger
than the standard furnace opening. Install transition as
required for air cleaner opening to match furnace
opening as described below.
6. Position the air cleaner on the return opening of the
indoor unit with the air cleaner cabinet gasket against
the indoor unit. Check that the front of the air cleaner
cabinet is facing the front of the indoor unit.
7. Align the rear of the air cleaner flush with the rear of
the indoor unit.
8. Align the sides of the cabinet with the sides of the unit.
9. The front of the cabinet will NOT align flush with the
front of the unit.
10. Securely fasten the unit using the self-tapping sheet
metal screws provided. See Figure 21.
11. Reinstall the FIELD CHARGER and lock into place by
bending one locking tab on the cabinet. See Figure 18.
12. Reinstall the PRE-FILTER and COLLECTION CELLS.
13. Each cell must be oriented with the handles toward the
front.
14. The door can be installed in either direction. Deter-
mine which direction will best allow access to the
latches and 24 volt power cord. Insert the 2 tabs on the
door into the slots in the cabinet flange and rotate the
door into the closed position. Rotate the two quarter-
turn latches on the Power Door inward. See Door
Operation, Section C.
NOTE: The door has a safety switch to ensure power is
interrupted when the door is removed. This switch is
open when the door is removed from the cabinet. When
the door is properly installed, an actuator tab located in
the cabinet will close the switch, allowing power to the
electronics.
15. Remove stickers (two stickers both are 5.5" x 7.5")
from the packet and attach to the furnace, air handler,
or ductwork in a location visible to the homeowner.
16. Demonstrate Maintenance (Section H) and Door
Operation (Section C) to the homeowner.
7