Lennox VRF VMDB Series Installation Instruction page 8

Return Air Filter
Foldable Return Air Filter
The factory-supplied return air filter is hinged to allow it
to be folded if needed to remove it from the unit in tight
spaces. See Table 1 for filter dimensions.
Filter
removal
tab
Hinges
Figure 5. Foldable Factory-Supplied Return Air Filter
Remove Return Air Filter Instructions
1. If removing the filter from the left side (facing the rear
of the unit), remove the factory-installed receiver
from the electrical control box panel by sliding the re-
ceiver up until the two plastic mounting brackets on
the back of the receiver slide out of the slots on the
back of the control box. This step is not necessary if
removing the filter from the right side (facing the rear
of the unit).
Receiver
Lift up to
remove
receiver.
Figure 6. Remove Receiver
Indoor Unit Model
VMDB007,009
VMDB012
VMDB015,018,024
VMDB030,036,048
Table 1. Filter Dimensions
Filter Dimensions
32 x 7-1/2 x 3/8 in.
813 x 192 x 10 mm
32 x 10 x 3/8 in.
813 x 252 x 10 mm
40-3/4 x 10 x 3/8 in.
1035 x 252 x 10 mm
43-1/8 x 11 x 3/8 in.
1095 x 278 x 10 mm
8
2. Loosen the screw that secures the filter retaining
bracket and slide the bracket away from the unit.
Figure 7. Loosen Filter Retaining Bracket
3. Grasp the filter removal tab and slide the filter out.
Filter removal tab
Figure 8. Slide Out Filter
Figure 9. Filter Partially Removed
4. Reverse these steps to reinstall the filter. Be sure
to reinstall the receiver if it was detached during the
filter removal.
Each Section of Filter Dimensions
8-1/2 x 7-1/2 x 3/8 in.
217 x 192 x 10 mm
8-1/2 x 7-1/2 x 3/8 in.
217 x 252 x 10 mm
13-1/2 x 7-1/2 x 3/8 in.
345 x 252 x 10 mm
14-3/8 x 11 x 3/8 in.
365 x 278 x 10 mm