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Charging
The XCZ20 unit is factory-charged with enough HFC-410A
refrigerant to accommodate a 15-foot length of refrigerant
piping. Charge should be checked and adjusted using the
tables provided on the charging procedure sticker on the
unit access panel. Detailed information is provided in the
XCZ20 Installation and Service Procedures manual, which
is available on LennoxPros.com.
IMPORTANT !
Room thermostat must be turned down at least 5°F
from set point so charging occurs with system
operating at 100% capacity. Seven-segment display
on outdoor control will show outdoor unit running
capacity.
Alarms
Alarm information is provided on on the outdoor unit ac
cess panel and in the S30 Installer's System Setup Guide.
Detail alarm information is also available in the XCZ20
Installation and Service Procedures available on
LennoxPros.com.
Outdoor Control Seven-Segment Display
and Push Button
Information concerning the outdoor control seven-seg
ment display and push button operations are available on
the unit access panel and in the XCZ20 Installation and
Service Procedures.
System Component Configuration
(Outdoor Unit)
All configuration of the outdoor unit is completed using the
S30 thermostat. Please refer to the S30 Installer's System
Setup Guide for complete details on how to integrate this
unit into a communicating system.
IMPORTANT
This performance check is ONLY valid on systems
that have clean indoor and outdoor coils, proper
airflow over coils, and correct system refrigerant
charge. All components in the system must be
functioning
properly
compressor operational check.
Accurate measurements are critical to this test as
indoor system loading and outdoor ambient can
affect variations between low and high-capacity
readings.
Page 15
to
correctly
perform
XCZ20 SERIES
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