Pub. No. 18-HE122D1-1-EN
Numbers in [brackets] are for 50 Hz international systems.
7
Installer’s Guide
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 14.
9. Reinstall the FIELD CHARGER and lock into place by
bending one locking tab on the cabinet. See Figure
16.
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
. 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 turn
-
ing vanes be installed inside an elbow on ductwork
attached to the entering airstream side of the air
cleaner. See Figure 9 on Page 4.
1. See door operation Section C. 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 19
.
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.
Figure 19 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 in-
door 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 19.
11. Reinstall the FIELD CHARGER and lock into place by
bending one locking tab on the cabinet. See Figure 16.
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
. 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 han-
dler, or ductwork in a location visible to the home-
owner.
16. Demonstrate Maintenance (Section H) and Door
Operation (Section C) to the homeowner.
Use inner
mounting holes
for Side Installation
Install gasket material.
Cut to length required.
