Mpc Three-Zone Refrigerant Cycle Diagram; Mpc Four-Zone Refrigerant Cycle Diagram - Lennox MMA018SM4 Service Manual

8.3. MPC Three-Zone Refrigerant Cycle Diagram

INDOOR
T1 Room
Indoor Coil
temp. sensor
T2 Evaporator
temp. sensor
middle

8.4. MPC Four-Zone Refrigerant Cycle Diagram

INDOOR
T1 Room
Indoor Coil
temp. sensor
T2 Evaporator
temp. sensor
middle
EXV A CAPILIARY A
LIQUID VALVE A
EXV B CAPILIARY B
LIQUID VALVE B
EXV C CAPILIARY C
LIQUID VALVE C
T2B-A Evaporator
GAS VALVE A temp. sensor outlet
T2B-B
GAS VALVE B
T2B-C
GAS VALVE C
Accumulator
EXV A CAPILIARY A
LIQUID VALVE A
EXV B CAPILIARY B
LIQUID VALVE B
EXV C CAPILIARY C
LIQUID VALVE C
EXV D CAPILIARY D
LIQUID VALVE D
T2B-A
Evaporator
GAS VALVE A temp. sensor outlet
T2B-B
GAS VALVE B
T2B-C
Accumulator
GAS VALVE C
T2B-D
GAS VALVE D
Low pressure
switch
50
OUTDOOR
CHECK VALVE
CAPILIARY TUBE
T4 Ambient
temp. sensor
4-WAY VALVE
T5 Discharge
temp. sensor
Compressor
OUTDOOR
CHECK VALVE
CAPILIARY TUBE
T4 Ambient
temp. sensor
4-WAY VALVE
High pressure
switch
T5 Discharge
temp. sensor
Compressor
T3
Condenser
temp. sensor
Outdoor Coil
COOLING
HEATING
T3
Condenser
temp. sensor
Outdoor Coil
COOLING
HEATING