548086-XIM-C-0814
2
Johnson Controls Unitary Products
INSPECTION
As soon as a unit is received, it should be inspected for possible dam-
age during transit. If damage is evident, the extent of the damage
should be noted on the carrier’s delivery receipt. A separate request for
inspection by the carrier’s agent should be made in writing. See Local
Distributor for more information.
Special Requirements For Installing/Servicing R-407C
Equipment
•
Gauge sets, hoses, refrigerant containers, and recovery system
must be designed to handle the POE/PVE type oils, and the
higher pressures of R-407C.
•
Manifold sets should be high side and low side with low side
retard.
•
All hoses must have a 700 psig service pressure rating.
•
Leak detectors should be designed to detect HFC refrigerant.
•
Recovery equipment (including refrigerant recovery containers)
must be specifically designed to handle R-407C.
•
A liquid-line filter drier is required on every unit.
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 ensure 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.
5.
The maximum allowable line length for this product is 75 feet.
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 paved
ground area that is seasonally hot, 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 adequate structural support.
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
125°F
57°F
72°F
For multiple unit installations, units must be spaced a minimum of
24” (61 cm) apart (coil face to coil face).
NOTICE
FIGURE 1:
Typical Installation
60” OVERHEAD
CLEARANCE
MINIMUM 18” SERVICE
ACCESS CLEARANCE
ON ONE SIDE
WEATHERPROOF
DISCONNECT
SWITCH
THERMOSTAT
10” CLEARANCE
AROUND PERIMETER
CONTROL
ACCESS
PANEL
TO INDOOR COIL
NEC CLASS 1 WIRING
NEC CLASS 2 WIRING
TO FURNACE OR
AIR HANDLER
TERMINAL BLOCK
SEAL OPENING(S) WITH
PERMAGUM OR EQUIVALENT
NOTES:
ALL OUTDOOR WIRING MUST BE WEATHERPROOF.
MINIMUM 24” UNIT TO UNIT CLEARANCE.
A0150-001
