035-16408-001 Rev. B (101)
Unitary Products Group
3
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.
A minimum of 18” is required for service at the control panel.
A 10 inch clearance is required for the air inlet to the outdoor
coil. The air discharge of the unit requires a 60 inch clearance
between the top of the unit and any obstucture.
If the unit is to be installed on a black-topped ground area,
the unit should be raised sufficiently above the ground to
avoid taking the accumulated layer of hot air into the outdoor
unit.
Provide an adequate structural support.
GROUND INSTALLATION
The unit may be installed at ground level on a solid base that
will not shift or settle, causing strain on the refrigerant lines
and possible leaks. Maintain the clearances shown in Figure
1 and install the unit in a level position. Isolate the base from
the structure to avoid noise or vibration transmission.
Isolate the unit from rain gutters to avoid any possible wash
out of the foundation.
Normal operating sound levels may be objectionable if the
unit is placed directly under windows of certain rooms (bed
rooms, study, etc.).
UNIT PLACEMENT
1.
Provide a base in the pre-determined location.
2.
Remove the shipping carton and inspect for possible
damage.
3.
Compressor tie-down bolts should remain tightened.
4.
Position the unit on the base provided.
5.
Make a hole(s) in the structure wall large enough to
accommodate the insulated vapor line, the liquid line and
the wiring.
TXV INSTALLATION
This condensing unit requires the installation of a thermal
expansion valve. The TXV controls the superheat of the
refrigerant at the outlet of the evaporator coil, ensuring the
proper refrigerant temperature at the suction of compressor.
Following are the basic steps for installing the TXV. For detail
instructions, refer to the Installation Instructions accompany-
ing the TXV kit.
Install TXV kit as follows:
1.
First, relieve the holding charge by depressing the
Schrader valve located in the end of the liquid line.
2.
After holding charge is completely discharged, loosen
and remove the liquid line fitting from the orifice distribu-
tor assembly. Note that the fitting has
right hand
threads
.
3.
Remove the orifice from the distributor body using a
small diameter wire or paper clip. Orifice is not used
when the TXV assembly is installed.
FIGURE 1 :
TYPICAL INSTALLATION
MINIMUM 18” SERVICE ACCESS
CLEARANCE ON ONE SIDE
60” OVERHEAD
CLEARANCE
10” 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
CONTROL ACCESS PANEL
NOTE: ALL OUTDOOR WIRING MUST
BE WEATHERPROOF.
