5. Converting the filter box from rear (as supplied) to
bottom return
1. Remove rear duct flanges and bottom plate.
2. Install duct flanges on the bottom of the filter box.
3. Install the bottom plate on the rear of the filter box.
Use of
Filt
er per
Model
type
Use of
Filt
er
per
Model t
ype
Us
e o
f
Filt
er per
Model t
ype
1
2
3
Rear Return
(standard)
Bottom Plate
Duct flanges
Inlet flow
Inlet flow
Bottom Return
• When you notice exceptionally abnormal noise or vibration,
stop operation and contact your dealer.
Warning
• Use proper safety equipment for the Installation work.
• Tighten all screws as specified in the instructions.
- Over tightening screws can cause damage to parts.
• Not following properly installation instructions may result
in air flow not passing through the filters, causing poor
performance and other problems.
Caution
FBM-Series
© 2019 Mitsubishi Electric US, Inc.
10
Specifications are subject to change without notice.
