Before you begin installation, read these instructions completely and carefully.
Observe all governing codes and ordinances as they may apply.
Leave these instructions with the owner.
IMPORTANT SAFETY NOTICE
!
is to be installed only by a licensed and trained industry professional. The manufacturer will not
assume liability for unqualified installers or failure to follow these instructions.
Warning
For personal safety, disconnect system power before installing this accessory.
!
During installation, if ground wires, screws, straps, clips, or other means of attaching grounding
components are removed, they must be returned to their original positions and fastened securely.
Model: UAMFB0912A, UAMFB1824A
Filter Box Model Indoor Unit Model Height Width
UAMFB0912A
UAMFB0912A
UAMFB1824A
UAMFB1824A
The filter box can be installed before or after indoor unit installation.
A. Rear Return Applications
1. Remove the filter from the filter slot in the duct flange and discard.
2. Align the filter box so that it slides over the duct flange and fits tightly on the flange.
3. Secure filter box with sheet metal screws or rivets.
4. Install the specified size filters in the slot and place the cover over the filter access opening.
Rear Return
1
To avoid personal injury or property damage, this accessory
USYM09U
USYM12U
USYM18U
USYM24U
Depth
9-3/4"
25"
22-3/4"
9-3/4"
25"
22-3/4"
9-3/4"
38-3/4" 25-1/16" 14" x 20" x 2" (2)
9-3/4"
38-3/4" 25-1/16" 14" x 20" x 2" (2)
Installation Instructions
MERV Filter Box
Required Filter (Qty)
14" x 20" x 2" (1)
14" x 20" x 2" (1)
Bottom Return
31-5000557 Rev. 0 09-20 GEA