Figure 6: Alternative installation clearances
Mounting the outdoor unit on a wall
Before you begin:
On occasion, site conditions may require direct wall mounted brackets to be used to locate and
support the outdoor unit. In these applications, address unit base pan support, structural integrity,
safe access, and serviceability, as well as the possible sound and vibration transmission into the
structure.
About this task:
When site conditions require you to mount the outdoor unit on a wall, you must use two direct
wall mount brackets to support the outdoor unit. The wall mount brackets are field supplied. It is
important to be aware that wall mounting is best served by a correctly engineered solution.
1. Make sure that the location you have selected for the outdoor unit is suitable. See Selecting a
location for installation.
2. Use two wall mount brackets to mount the outdoor unit on the wall.
Installing the outdoor unit as a replacement unit
About this task:
When installing this unit as a replacement for an existing R-454B unit, you must replace the outdoor
unit, indoor coil, and metering device. Complete all of the steps outlined to ensure correct system
operation and performance. Replace the refrigeration piping where possible.
Installation Manual: R-454B Outdoor Split-System Air Conditioner20
Johnson Controls Ducted Systems
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