Lennox XC20-036-230-01 Installation And Service Procedure page 6

COMPRESSOR TOP CAP
SWITCH (THERMAL)
CRANKCASE HEATER THERMOSTAT
(S40) OPENS AT 70ºF, CLOSES AT 50ºF
DRIER
(ONE WAY - HFC-410A)
LIQUID LINE SENSOR
IMPORTANT
This unit must be matched with an indoor coil as
specified in Lennox Product Specification bulletin.
Coils previously charged with HCFC-22 must be
flushed.
XC20
Typical Plumbing Components
SERVICE VALVE
Figure 2. Plumbing Component Locations
HIGH PRESSURE
SERVICE VALVE
CAUTION
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take care
while handling this equipment and use protective
clothing.
6
COMPRESSOR
LOW PRESSURE
SWITCH
SWITCH