Mpa And Mpb Three-Zone Refrigerant Cycle Diagram; Mpa And Mpb Four-Zone Refrigerant Cycle Diagram - Lennox MPA009S4S Service Manual

7.3.

MPA and MPB Three-Zone Refrigerant Cycle Diagram

INDOOR
Indoor Coil
T2 Evaporator
temp. sensor
middle
7.4.

MPA and MPB Four-Zone Refrigerant Cycle Diagram

INDOOR
Indoor Coil
T2 Evaporator
temp. sensor
middle
LIQUID VALVE A
LIQUID VALVE B
LIQUID VALVE C
T1 Room
temp. sensor
GAS VALVE A
GAS VALVE B
GAS VALVE C
LIQUID VALVE A
LIQUID VALVE B
LIQUID VALVE C
LIQUID VALVE D
T1 Room
temp. sensor
GAS VALVE A
GAS VALVE B
GAS VALVE C
GAS VALVE D
OUTDOOR
EXV A CAPILIARY A
EXV B CAPILIARY B
EXV C CAPILIARY C
T2B-A Evaporator
temp. sensor outlet
T2B-B
T2B-C
Accumulator
Compressor
OUTDOOR
EXV A CAPILIARY A
EXV B CAPILIARY B
EXV C CAPILIARY C
EXV D CAPILIARY D
T2B-A
Evaporator
temp. sensor outlet
T2B-B
T2B-C
Accumulator
T2B-D
Low pressure
switch
Compressor
42
CHECK VALVE
T3
Condenser
temp. sensor
CAPILIARY TUBE
T4 Ambient
temp. sensor
4-WAY VALVE
T5 Discharge
COOLING
temp. sensor
HEATING
CHECK VALVE
T3
Condenser
temp. sensor
CAPILIARY TUBE
T4 Ambient
temp. sensor
4-WAY VALVE
High pressure
switch
T5 Discharge
temp. sensor
Outdoor Coil
Outdoor Coil
COOLING
HEATING