Mpc Five-Zone Refrigerant Cycle Diagram; Mlb Six-Zone Refrigerant Cycle Diagram - Lennox MCFA Service Manual

11.5. MPC Five-Zone Refrigerant Cycle Diagram

INDOOR
Indoor Coil
T2 Evaporator
temp. sensor

11.6. MLB Six-Zone Refrigerant Cycle Diagram

LIQUID VALVE A
LIQUID VALVE B
LIQUID VALVE C
LIQUID VALVE D
LIQUID VALVE E
T1 Room
temp. sensor
GAS VALVE A
GAS VALVE B
GAS VALVE C
GAS VALVE D
GAS VALVE E
OUTDOOR
EXV A CAPILIARY A
EXV B CAPILIARY B
EXV C CAPILIARY C
CHECK VALVE
EXV D CAPILIARY D
CAPILIARY TUBE
EXV E CAPILIARY E
Accumulator
T5 Discharge
Low pressure temp. sensor
switch
Compressor
This plate heat exchanger is to
cool the gas for compressor
during heating mode.
This EXV G, only open during the heating
mode and at low ambient temperature.
The Radiator is to cool the PCB at heating and cooling mode
Radiator is to cool the PCB at heating and cooling mode
The Radiator is to cool the PCB at heating and cooling mode
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T3
Condenser
temp. sensor
T4 Ambient Outdoor Coil
temp. sensor
4-WAY VALVE
COOLING
High pressure
HEATING
switch