Refrigerant System - Lennox XP13-018 Service Literature

III − REFRIGERANT SYSTEM
Refer to figure 11 and 12 for refrigerant flow in the heat-
ing and cooling modes. The reversing valve is energized
during cooling demand and during defrost.
XP13 COOLING CYCLE (SHOWING MANIFOLD GAUGE CONNECTIONS)
EXPANSION/CHECK
VALVE
LOW HIGH
PRESSURE
PRESSURE
GAUGE MANIFOLD
TO
LIQUID LINE
R−410A
SERVICE
DRUM
PORT
XP13 HEATING CYCLE (SHOWING MANIFOLD GAUGE CONNECTIONS)
EXPANSION/CHECK
VALVE
LOW HIGH
PRESSURE PRESSURE
GAUGE MANIFOLD
TO
LIQUID LINE
R−410A
SERVICE
DRUM
PORT
OUTDOOR UNIT
DISTRIBUTOR
COIL SENSOR
BIFLOW
OUTDOOR
FILTER / DRIER
COIL
INTERNAL
COMPRESSOR
LIMIT
MUFFLER
COMPRESSOR
NOTE − ARROWS INDICATE DIRECTION OF REFRIGERANT FLOW
FIGURE 11
OUTDOOR UNIT
DISTRIBUTOR
COIL SENSOR
BIFLOW
OUTDOOR
FILTER / DRIER
COIL
INTERNAL
COMPRESSOR
LIMIT
MUFFLER
COMPRESSOR
NOTE − ARROWS INDICATE DIRECTION OF REFRIGERANT FLOW
FIGURE 12
Page 8
REVERSING VALVE
SUCTION
SERVICE
VAPOR
PORT
LINE
VALVE
EXPANSION/CHECK
VALVE
REVERSING VALVE
SUCTION
SERVICE
VAPOR
PORT
LINE
VALVE
EXPANSION/CHECK
VALVE
INDOOR UNIT
INDOOR
COIL
INDOOR UNIT
INDOOR
COIL