Refrigerant System Flow Diagrams - Lennox MS8 SERIES Installation And Service Procedures

Refrigerant System Flow Diagrams

The following two diagrams illustrate refrigerant flow in either cooling or heating (heat pump only) operations.
INDOOR UNIT
INDOOR COIL
INDOOR UNIT
INDOOR COIL
MS8C / MS8H (208-230V)
TYPICAL AIR CONDITIONER SYSTEM
3-WAY
MUFFLER
SERVICE
VALVE
COMPRESSOR
STRAINER
2-WAY
SHUT-OFF
VALVE
FIGURE 72
TYPICAL HEAT PUMP SYSTEM
3-WAY
SERVICE
VALVE
COMPRESSOR
STRAINER
2-WAY
SHUT-OFF
VALVE
FIGURE 73
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OUTDOOR UNIT
Discharge
ACCUMULATOR
Suction
OUTDOOR COIL
STRAINER
Capillary
ELECTRONIC
EXPANSION VALVE
OUTDOOR UNIT
MUFFLER
REVERSING
VALVE
Discharge
Suction
ACCUMULATOR
STRAINER
ELECTRONIC
EXPANSION VALVE
(EXCEPT 30K WHICH
USES CAPILLARY)
COOLING
OUTDOOR COIL
COOLING
HEATING