Page 3
Parts Arrangement
Figure 1
HP27 UNIT COMPONENTS
CONTACTOR
DEFROST CONTROL/TIMED−OFF CONTROL
LIQUID LINE
SERVICE VALVE
AND GAUGE
PORT
VAPOR LINE
SERVICE VALVE
AND GAUGE
PORT
MUFFLER
EXPANSION VALVE
WITH
INTERNAL CHECK VALVE
REVERSING
VALVE
AND SOLENOID
BIFLOW
FILTER/DRIER
DUAL
CAPACITOR
DISTRIBUTOR
HIGH PRESSURE
SWITCH
GROUND LUG
DEFROST
THERMOSTAT
TXV
SENSING BULB −036,
−042 ONLY
VAPOR GAUGE
PORT
ACCUMULATOR
TXV
SENSING BULB
−024, −030 ONLY
Setting the Unit
CAUTION
In order to avoid injury, take proper precaution when
lifting heavy objects.
CAUTION
Danger of sharp metallic edges. Can cause injury.
Take care when servicing unit to avoid accidental
contact with sharp edges.
The outdoor units operate under a wide range of weather
conditions; therefore, several factors must be considered
when positioning the outdoor unit. The unit must be posi-
tioned to give adequate clearances for sufficient airflow
and servicing. A minimum clearance of 24inches (610 mm)
between multiple units must be maintained. Refer to figure
2 for installation clearances.
1 − Place a sound−absorbing material, such as Isomode,
under the unit if you intend to install it in a location or a
position that will transmit sound or vibration to the liv-
ing area or adjacent buildings.
2 − Install the unit high enough above ground or roof to
prevent ice build−up and to allow adequate drainage of
defrost water.
3 − In areas that receive heavy snow, do not locate the unit
where drifting will occur. Ensure that the unit base is
elevated above the depth of average snows.
NOTE − Elevate the unit by constructing a frame using
suitable materials. If you construct a support frame, it
must not block drain holes in the base of the unit.
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
