Applicable To All Versions; Compressor Information And Testing - Lennox Signature XP21 Series Installation And Service Procedure

Compressor Information and Testing

The XP21 uses either a ZPSK4 or ZPSK5 depending on model number. See table 25 for applicable compressor use by
model number.
ELECTRICAL CHARACTERISTICS
Table 24 provides information concerning the electrical characteristics of both the ZPSK4 and ZPSK5 (single−phase).
Lennox
Compressor
Lennox Model
Part Number
XP21−024−230−01 thru −04 100504−01
XP21−024−230−05 103137−01
XP21−036−230−01 thru −03 100504−02
XP21−036−230−04 103137−02
XP21−048−230−03 100504−03
XP21−048−230−04 103137−03
XP21−060−230−03 100504−14
XP21−060−230−04 103137−04
ELECTRICAL CHARACTERISTICS
External mechanical differences between the ZPS*K4 and ZPS*K5 are minimal. The suction and discharge tube height dif-
ferences are less than 0.75". The ZPS40K5 compressor is 0.50" taller than the ZPS40K4. All other ZPS*K5 compressors are
shorter than the equivalent ZPS*K4 compressor. The mounting configuration is the same for both compressor families. The
compressor frame sizes are different and a smaller crankcase heater may be required. In addition, there are difference sin
mounting grommets because of the different frame sizes.
K4 COMPRESSOR MODULATING SOLENOID

APPLICABLE TO ALL VERSIONS

Table 25. Compressor Electrical Characteristics Comparison
Copeland Model
ZPS20K4E−PFV
ZPS20K5E−PFV
ZPS30K4E−PFV
ZPS30K5E−PFV
ZPS40K4E−PFV
ZPS40K5E−PFV
ZPS49K4E−PFV
ZPS49K5E−PFV
SOLENOID PLUG (24VDC INPUT)
These controls convert the 24 volt AC
power to 24 Volt DC. The solenoid is
pulled in with 24 volts DC and then the
coil is held in by pulsing the voltage
between 6 and 18 volts DC.
Figure 27. K4 Compressor Modulating Solenoid
Voltage Phase LRA RLA
52 10.3
58.3 11.7
82 16.7
83 15.3
208/230 1
96 21.2
104 21.2
118 23.1
153 28.8
Page 57
Minimum
Max Fuse Run
Circuit
/ Ckt Bkr Capacitor
Ampacity
14.9 25 35/5 370
20 25 35/5 440
22.9 35 40/5 440
21.1 35 40/5 440
28.5 45 45/10 440
28.5 45 30/5 440
30.9 50 80/7.5 440
38 60 40/5 440
SOLENOID PLUG (24VDC INPUT /
24VDC OUTPUT)
This control outputs 24VAC on Y2 and
OUT. The plug on the compressor has
a rectifer that converts the 24VAC to
24VDC. The solenoid is pulled in with
24VDC.
Start Kit
63W22
10J42
63W23
10J42
10J42
12J90
63W24
12J90
XP21