I - Unit Information; Unit Components - Lennox HP23 Series Manual

I – UNIT INFORMATION
HP23 units are available in 1, 1 -1/2, 2, 2 -1/2, 3, 3 -1/2, 4
and 5 ton capacities.
All major components (indoor blower/coil) must be
matched according to Lennox recommendations for
the compressor to be covered under warranty. Refer to
the Engineering Handbook for approved system
matchups. A misapplied system will cause erratic
operation and can result in early compressor failure.
II – UNIT COMPONENTS
Unit components are illustrated in figures 1 and 2.
HP23-141, -210, -260, -310 and -410

UNIT COMPONENTS

EXPANSION
VALVE
COMPRESSOR
HP23-141 SHOWN
CONTROL
REVERSING VALVE
BOX
FIGURE 1
HP23-460, -510 and -650 UNIT COMPONENTS
EXPANSION
VALVE
FAN
SPIDER
CONTROL BOX
REVERSING VALVE
FIGURE 2
A – Control Box (Figures 3 and 4)
HP23 UNIT CONTROL BOX SINGLE PHASE UNITS
OUTDOOR
FAN/MOTOR
SUCTION
MUFFLER HP23-141
HP23 UNIT CONTROL BOX THREE PHASE UNITS
ONLY
COMPRESSOR
ACCUMULATOR
HP23-141 ONLY
OUTDOOR
FAN/MOTOR
A low voltage make up area is provided for thermostat
field wiring. Field thermostat wiring is made to color
coded pigtail connections as illustrated in figure 5.
COMPRESSOR
ACCUMULATOR
Page 3
START CAPACITOR
(C7)
DEFROST
RELAY (K4)
COMPRESSOR
CONTACTOR
(K1)
GROUNDING
LUG
FIGURE 3
FAN CAPACITOR
(C1)
DEFROST
RELAY (K4)
CONTACTOR
(K1)
GROUNDING
LUG
FIGURE 4
THERMOSTAT WIRING IDENTIFICATION
RED
YELLOW
ORANGE
BEIGE
BLACK
FIGURE5
DUAL CAPACITOR
(C12)
POTENTIAL
RELAY (K31)
DEFROST
CONTROL
CMC1
TIMED OFF
CONTROL (A4)
HP24-651 ONLY
LOW VOLTAGE
MAKEUP
AREA
TRANSFORMER(T5)
"J" VOLTAGE
UNITS ONLY
DEFROST
CONTROL
CMC1
TIMED OFF
CONTROL (A4)
HP24-653 ONLY
LOW VOLTAGE
MAKEUP
AREA
24V (POWER) INPUT
TO OUTDOOR UNIT
(COMPRESSOR) INPUT
(REVERSING VALVE)
INPUT
(ELECTRIC HEAT)
DEFROST OUTPUT
(COMMON)