Lennox Signature XP21 Series User Manual

Page 60
XP21
Table 27. Two−Stage Modulation Compressor Field Operational Checklist
Two−Stage Modulation Compressors Field Operational Checklist
Unit Readings Y1 − First Stage
Expected results during Y2
demand (Toggle switch On)
Y2 − Second Stage
COMPRESSOR
Voltage Same
Amperage Higher
CONDENSER FAN MOTOR
Amperage Same or Higher
TEMPERATURE
Ambient Same
Outdoor Coil Discharge Air Higher
Compressor Discharge Line Higher
Indoor Return Air Same
Indoor Coil Discharge Air Lower
PRESSURES
Suction (Vapor) Lower
Liquid Higher

Lennox Signature XP21 Series Specifications

General

Brand	Lennox
Model	Signature XP21 Series
Category	Heat Pump
Language	English