Page 3
Parts Arrangement
Figure 1
contactor
defrost control/timed−off control
liquid line
service valve
and gauge port
vapor line
service valve
and gauge port
compressor
muffler
expansion valve
with internal check valve
reversing valve
and solenoid
compressor
terminal box
filter/drier
dual capacitor
distributor
high pressure
switch
ground lug
defrost
thermostat
sensing bulb
crankcase heater
thermostat
(2−1/2 through
5−ton units)
crankcase
heater
Setting the Unit
CAUTION
In order to avoid injury, take proper precaution when
lifting heavy objects.
CAUTION
Sharp sheet metal edges can cause injury. When
installing the unit, avoid accidental contact with
sharp edges.
These units operate under a wide range of weather condi-
tions; therefore, several factors must be considered when
positioning the outdoor unit. The unit must be positioned to
give adequate clearances for sufficient airflow and servic-
ing. A minimum clearance of 24 inches (610 mm) between
multiple units must be maintained. Refer to figure 2 for in-
stallation clearances.
1 − Place a sound−absorbing material, such as Isomode,
under the unit if it will be installed in a location or posi-
tion that will transmit sound or vibration to the living
area or adjacent buildings.
2 − Mount unit high enough above ground or roof to allow
adequate drainage of defrost water and prevent ice
build−up.
3 − In heavy snow areas, do not locate unit where drifting
will occur. The unit base should be elevated above the
depth of average snows.
NOTE − Elevation of the unit may be accomplished by
constructing a frame using suitable materials. If a sup-
port frame is constructed, it must not block drain holes
in unit base.
36"
(914 mm)
36"
(914 mm)
*36"
(914 mm)
*36"
(914 mm)
Installation Clearances
NOTE − A service access
clearance of 30" (762 mm)
must be maintained in front
of the service access panel.
Clearance to one side must
be 36" (914 mm). Clearance
to one of the remaining two
sides may be 12" (304 mm)
and the final side may be 6"
(152 mm).
NOTE − A clearance of 24" (610 mm)
must be maintained between two units.
NOTE − 48" (1219 mm) clearance required on top
of unit. Maximum soffit overhang is 36" (914 mm).
Figure 2
4 − When installed in areas where low ambient tempera-
tures exist, locate unit so winter prevailing winds do
not blow directly into outdoor coil.
