Service manual

34
9
Combined Refrigerant Piping Systematic Drawings
Normal Operation
(Cooling mode)
Propeller fan
Check joint (Pd)
Check valve
Check
valve
Check valve
Check
valve
Check valve
Check
valve
Accumulator
Check
joint (Ps)
Capillary
Capillary
Capillary
Capillary
Fixed-speed
Inverter
Compressor
Capillary
Sensor
(TE1)
Sensor (TS)
Sensor
(TK1)
Sensor
(TK2)
Sensor
(TK3)
Sensor
(TD1)
Sensor
(TD1)
Sensor
(TD2)
Strainer
Strainer
Strainer
Strainer
Strainer
Strainer
Strainer
Strainer
Air heat exchanger at outdoor side
Fan Motor
PMV (A)
PMV
PMV PMV
Liquid
tank
Dryer
(x2)
Oil
separator
(Right side)
Air heat exchanger at outdoor side
Pulse motor valve B
(Cooling bypass)
(PMVB)
Solenoid valve
(SV2)
High- pressure sensor
Low- pressure sensor
High- pressure SW
High- pressure SW
Solenoid valve
(SV3C)
Solenoid
valve
(SV3B)
Solenoid valve (SV3A)
Compressor case oil removal valve
Solenoid
valve
(SV42)
(Left side)
M
Service valve (gas side)
Oil tank
Packed valve (oil balancing pipe)
Packed valve (liquid side)
MM-A0280HT
Master unit 1 (Inverter)
MM-A0280HX
Slave unit 2 (Fixed-speed)
MM-A0280HX
Slave unit 3 (Fixed-speed)
MM-A0280HX
Slave unit 4 (Fixed-speed)
(Indoor unit 1)
(Indoor unit 2)
Air heat
exchanger
at indoor
side
Evaporator
Evaporator
Evaporator
TC1
TC2
TC1
TC2
Pressure
sensor
Pressure
sensor
Check
joint
Check
joint
TA (Ambient sensor)
TA (Ambient sensor)
Strainer
(Indoor unit 3)
TC1
TC2
Pressure
sensor
Check
joint
TA (Ambient sensor)
(Solid line) High-pressure gas or compressed liquid refrigerant
(Dotted line) Evaporating gas refrigerant (Low-pressure gas)
Propeller fan
Check joint (Pd)
Check valve
Check valve
Check
valve
Check valve
Check
valve
Check valve
Check
valve
Accumulator
Check
joint (Ps)
Capillary
Capillary
Capillary
Capillary
Capillary
Fixed-speed
Fixed-speed
Compressor
Capillary
Sensor
(TE1)
Sensor (TS)
Sensor
(TK1)
Sensor
(TK2)
Sensor
(TK3)
Sensor
(TD2)
Strainer
Strainer
Fan Motor
PMV (A)
Liquid
tank
Dryer
(x2)
Oil
separator
Condenser
4-Way valve
4-Way valve
Condenser
Pulse motor valve B
(Cooling bypass)
(PMVB)
Solenoid valve
(SV2)
High- pressure sensor
Low- pressure sensor
High- pressure SW
High- pressure SW
Solenoid valve
(SV3C)
Solenoid
valve
(SV3B)
Solenoid valve (SV3A)
Compressor case oil removal valve
Solenoid
valve
(SV41)
Solenoid
valve
(SV42)
M
Service valve (gas side)
Oil tank
Packed valve (oil balancing pipe)
Packed valve (liquid side)
HP
HP
HP
HP
Service valve (gas side)
Packed valve (oil balancing pipe)
Packed valve (liquid side)
Service valve (gas side)
Packed valve (oil balancing pipe)
Packed valve (liquid side)
Strainer
Strainer