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HP25 PARTS ARRANGEMENT
FIGURE 1
HP25 UNIT COMPONENTS
CONTACTOR
DEFROST CONTROL
LIQUID LINE
SERVICE VALVE
VAPOR LINE
SERVICE VALVE
COMPRESSOR
MUFFLER
DEFROST
THERMOSTAT
EXPANSION
VALVE
EXPANSION VALVE
SENSING BULB
REVERSING VALVE
AND SOLENOID
COMPRESSOR
TERMINAL BOX
FILTER/DRIER
WITH
INTERNAL CHECK VALVE
THERMOMETER WELL
TERMINAL STRIP
DUAL CAPACITOR
(Single-Phase Units)
SERVICE LIGHT
THERMOSTAT
DISTRIBUTOR
AND GAUGE PORT
AND GAUGE PORT
SUCTION GAUGE PORT
COMPRESSOR
TEMPERATURE
SENSOR
HP25211 THRU 460 ONLY
FACTORY
CHARGE
PROCESS PORT
CHARGE
COMPENSATOR
ACCUMULATOR
HP25510 AND
-650 ONLY
HIGH PRESSURE SWITCH
FAN CAPACITOR
(Three-Phase Units)
SETTING THE UNIT
HP25 heat pump units are approved and warranted
only for installation with specially matched indoor
coils, L10 or L15 line sets, and refrigerant control de
vices as designated by Lennox. Refer to the Lennox En
gineering Handbook for approved systems.
INSTALLATION
CLEARANCES
FIGURE 2
NOTE-48"
(1219mm)
clearance required
on top of unit.
*One side dimension
may be 12" (305mm).
*36"
(914mm)
36"
(914mm)
*36"
(914mm)
*36"
(914mm)
Heat pump units operate under a wide range of weath
er conditions; therefore, several factors must be con
sidered when positioning the outdoor unit.
1- Place a sound-absorbing material, such as Iso
mode, under the unit if it will be installed in a loca
tion or position that will transmit sound or vibra
tion to the living area or adjacent buildings.
2- Mount unit high enough above ground or roof to al
low adequate drainage of defrost water and prevent
ice build-up.
3- In heavy snow areas, do not locate unit where drift
ing 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 support frame is constructed, it must not block
drain holes in unit base.
4- When installed in areas where low ambient tem
peratures exist, locate unit so winter prevailing
winds do not blow directly into outdoor coil.
5- Locate unit away from overhanging roof lines
which would allow water or ice to drop on, or in
front of, coil or into unit.
