McQuay MDS030AR Applications Manual page 38

Design & installation Guide For McQuay MDS Multi System
220V~/50Hz
PTC
PTC
-38-
2.6.2 Wiring Diagram of Outdoor Units
Model MDS030A
L
FU
1L1 3L2 5L3
KM
2T1 4T2 6T3
blue red
C
Shaft white
heater
R CM
C2
13
C1
S
14
black
white Compressor
Description of components and parts:
Description Symbol Description
Symbol
Fuse
FU
PTC Compressor start-up unit
KM Contactor EXV Electric expansion valve
Solenoid valve
Capacitor PWMV
C1-3
HP High pressure switch
LP Low pressure switch
Model MDS030AR
220V~/50Hz
L
FU
1L1 3L2 5L3
KM
2T1 4T2 6T3
blue red
C
white
Shaft
heater
R CM
13
C1
S
14
white
Compressor black
Description of components and parts:
Symbol Description Symbol Description
PTC Compressor start-up unit FU Fuse
4WV Four-way valve EXV Electric expansion valve
KM Contactor PWMV Solenoid valve
C1-2 Capacitor LP Low pressure switch
HP High pressure switch RC Surge suppressor
2
NEUTRAL
N
Trans-
former
M
~
Fan 1
Jumper settings DIP switch J2 setting:
JP1 JP2 J2.6
OFF OFF ON
Notes:
DIP switch J1 settings:
1: -----------Field wiring
J1.1 J1.2 J1.3 J1.4 J1.5 J1.6 J1.7 2: -------------- Factory wiring
3: J2.1~2.5 sets the internetworking control address
OFF OFF OFF OFF OFF OFF ON
4: If the unit connected at the end of the bus,JP1,JP2 is on.
2
N
Trans-
former
C2
M
~
Fan 1
Jumper settings DIP switch J2 setting:
JP1 JP2 J2.6
OFF OFF OFF
DIP switch J1 settings:
J1.1 J1.2 J1.3 J1.4 J1.5 J1.6 J1.7
OFF OFF OFF OFF ON OFF ON
EXV
PWMV KM
5
3 7
LIVE
RY1 RY2 RY3 RY4 RY5
J2
TRAN-H
McQuay
CN1
TRAN-L
J1
JP1 JP2
A B GND
AI-IN
Connecting indoor
unit communication
Air discharge temperature sensor of the digital compressor(TH1)
RC
EXV PWMV 4WV
KM
5
3 4 7
LIVE
RY1 RY2 RY3 RY4 RY5
NEUTRAL
J2
TRAN-H
CN1 McQuay
TRAN-L
J1
JP1 JP2
A B GND
AI-IN
Connecting indoor
unit communication
Air discharge temperature sensor of the digital compressor(TH1)
Notes:
1: -----------Field wiring
Factory wiring
2: --------------
3: J2.1~2.5 sets the internetworking control address
4: If the unit connected at the end of the bus,JP1,JP2 is on.
8 10
RY6 RY7
NEUTRAL
OV-COMP3
OV-COMP2
OV-COMP1
LP
11 LP
HP HP
12
Coil middle
temperature sensor(TH5)
Return air temperature sensor(TH3)
Ambient temperature sensor(TH2)
8 10
RY6 RY7
NEUTRAL
OV-COMP3
OV-COMP2
OV-COMP1
LP
LP
11
HP
HP
12
Coil outlet
temperature sensor(TH6)
Coil middle temperature sensor(TH5)
Coil inlet temperature sensor(TH4)
Return air temperature sensor(TH3)
Ambient temperature sensor(TH2)