830867-BIM-B-0412
2
Johnson Controls Unitary Products
LIMITATIONS
The unit should be installed in accordance with all National, State and
Local Safety Codes and the limitations listed below:
1. Limitations for the indoor unit, coil, and appropriate accessories
must also be observed.
2. The outdoor unit must not be installed with any duct work in the air
stream. The outdoor fan is the propeller type and is not designed to
operate against any additional external static pressure.
3. The maximum and minimum conditions for operation must be
observed to assure a system that will give maximum performance
with minimum service.
4. The unit should not be operated at outdoor temperatures below 50°
F without an approved low ambient operation accessory kit installed.
SECTION III: UNIT INSTALLATION
LOCATION
Before starting the installation, select and check the suitability of the
location for both the indoor and outdoor unit. Observe all limitations and
clearance requirements.
The outdoor unit must have sufficient clearance for air entrance to the
condenser coil, air discharge, and service access. See Figure 1.
If the unit is to be installed on a hot sun exposed roof or a black-topped
ground area, the unit should be raised sufficiently above the roof or
ground to avoid taking the accumulated layer of hot air into the outdoor
unit.
Provide an adequate structural support.
ADD-ON REPLACEMENT/RETROFIT
The following steps should be performed in order to insure proper sys-
tem operation and performance.
1. Change-out the indoor coil, if required, to an approved indoor coil/
condensing unit combination with the appropriate metering device.
2. If the outdoor unit is being replaced due to a compressor burnout,
then installation of a 100% activated alumina suction-line filter drier
in the suction-line is required, in addition to the factory installed liq-
uid-line drier. Operate the system for 10 hours. Monitor the suction
drier pressure drop. If the pressure drop exceeds 3 psig, replace
both the suction-line and liquid-line driers. After a total of 10 hours
run time where the suction-line pressure drop has not exceeded 3
psig, replace the liquid line drier, and remove the suction-line drier.
Never leave a suction-line drier in the system longer than 50 hours
of run time.
TABLE 1:
Application Limitations
Ambient Air Temperature
on Outdoor Coil
Air Temperature on
Indoor Coil
Min. DB
Max. DB
Min. WB
Max. WB
50 °F
115 °F
57 °F
72 °F
For multiple unit installations, units must be spaced a minimum of 18
inches apart (coil face to coil face).
NOTICE
FIGURE 1:
Typical Installation
MINIMUM 18” SERVICE ACCESS
CLEARANCE ON ONE SIDE
60” OVERHEAD
CLEARANCE
6” CLEARANCE
COIL AREA
WEATHERPROOF
DISCONNECT
SWITCH
THERMOSTAT
TO FURNACE OR
AIR HANDLER
TERMINAL BLOCK
NEC CLASS 1 WIRING
NEC CLASS 2 WIRING
TO INDOOR COIL
SEAL OPENING(S) WITH
PERMAGUM OR EQUIVALENT
POSSIBLE OUTDOOR THERMOSTAT KIT LOCATIONS
(UNIT MOUNTING NOT AVAILABLE ON ALL MODELS)
NOTE: ALL OUTDOOR WIRING
MUST BE WEATHERPROOF.
