McQuay MDS030AR Applications Manual page 39

Model MDS040A
220V~/50Hz
L
FU
1L1 3L2 5L3
KM
2T1 4T2 6T3
blue blue
red
C
C2
R
CM
M
C1 PTC
~
S
13
red
white
Fan 1
Compressor
Description of components and parts:
Symbol Description Symbol Description
PTC Compressor start-up unit FU Fuse
KM Contactor PWMV Solenoid valve
C1-3 Capacitor LP Low pressure switch
HP High pressure switch
Model MDS040AR
220V~/50Hz
L
FU
1L1 3L2 5L3 21
KM
2T1 4T2 6T3 22
blue red
C
Shaft
heater
R C2
CM
M
PTC C1
~
S
13
white red
Compressor
Fan 1
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
LIVE
NEUTRAL
N
Trans-
former
C3
M
~
14
red
Fan 2
Jumper settings DIP switch J2 setting:
JP1 JP2
J2.6
OFF OFF ON
DIP switch J1 settings:
Notes:
1: -----------Field wiring
J1.1 J1.2 J1.3 J1.4 J1.5 J1.6 J1.7
2: --------------
3: J2.1~2.5 sets the internetworking control address
OFF OFF OFF OFF OFF OFF OFF
4: If the unit connected at the end of the bus,JP1,JP2 is on.
2
LIVE
N NEUTRAL
Trans-
former
C3
M
~
14
red
Fan 2
Jumper settings DIP switch J2 setting:
JP1 JP2
J2.6
OFF OFF OFF
DIP switch J1 settings:
Notes:
1: -----------Field wiring
J1.1 J1.2 J1.3 J1.4
J1.5 J1.6 J1.7
2: --------------
3: J2.1~2.5 sets the internetworking control address
OFF OFF OFF OFF OFF OFF OFF
4: If the unit connected at the end of the bus,JP1,JP2 is on.
Design & installation Guide For McQuay MDS Multi System
PWMV
KM
5
7 8
3
RY1 RY2 RY3 RY4 RY5
J2
TRAN-H
McQuay
TRAN-L
J1
JP1 JP2
A B GND
AI-IN
Connecting indoor
unit communication
Air discharge temperature sensor of the digital compressor(TH1)
Factory wiring
RC
EXV PWMV 4WV
KM
4 5
3 7 8
RY4 RY5
RY1 RY2 RY3
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)
Factory wiring
10
RY6 RY7
NEUTRAL
OV-COMP3
OV-COMP2
OV-COMP1
LP LP
11
HP
HP
12
Coil middle
temperature sensor(TH5)
Return air temperature sensor(TH3)
Ambient temperature sensor(TH2)
10
RY6
RY7
NEUTRAL
OV-COMP3
OV-COMP2
OV-COMP1
LP 11 LP
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)
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