McQuay MDS030AR Applications Manual page 41

Model MDS050AR(380V/3N~/50Hz)
R S
T
FU
DB3A
KM
OL
T2
T1 T3
M M
~ C1 ~
Shaft
heater
red
18
Digital Fan 1
compressor
Description of components and parts:
Symbol Description Symbol Description
DB3A Reverse phase-loss protector FU Fuse
Four-way valve Electric expansion valve
4WV EXV
KM Contactor
Solenoid valve
PWMV
Capacitor
C1-2 OL Overload protector
HP High pressure switch LP Low pressure switch
RC Surge suppressor
Model MDS060A
380V/3N~/50Hz
R S T
FU
DB3A
KM
OL
white
T2 17
T1 T3
M M
~ C1 ~
black
18
Digital
Fan 1
compressor
Description of components and parts:
Symbol Description Symbol Description
DB3A Reverse phase-loss protector FU Fuse
KM Contactor PWMV Solenoid valve
C1-2 Capacitor OL Overload protector
K1-3 Relay LP Low pressure switch
HP High pressure switch
DB3A
L
71
81
L1 LIVE
N NEUTRAL
Trans-
former
M
C2 ~
red
20
Fan 2
Overload setting&Jumper settings DIP switch J2 setting:
OL JP1 JP2
J2.6
12.9A 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 ON
OFF OFF OFF
4: If the unit connected at the end of the bus,JP1,JP2 is on.
L
K3
23
K2
22
K1
21
LIVE
L1
NEUTRAL
N
Trans-
white
19 former
M
C2 ~
black
20
Fan 2
Overload setting&Jumper settings: DIP switch J2 setting:
OL JP1 JP2 J2.6
14.0A 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 ON OFF
4: If the unit connected at the end of the bus,JP1,JP2 is on.
Design & installation Guide For McQuay MDS Multi System
RC
EXV
PWMV 4WV KM
21 22
2 3
1
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)
Factory wiring
DB3A
71
81
PWMV KM K1 K2
3 5 7
1
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
23
RY6 RY7
NEUTRAL
OV-COMP3
OV-COMP2
OV-COMP1
12 OL
LP
LP
15
HP HP
16
Coil outlet
temperature sensor(TH6)
Coil middle temperature sensor(TH5)
Coil inlet temperature sensor(TH4)
Return air temperature sensor(TH3)
Ambient temperature sensor(TH2)
K3
8
RY6 RY7
NEUTRAL
OV-COMP3
OV-COMP2
OV-COMP1
12 OL
LP LP
15
HP HP
16
Coil middle
temperature sensor(TH5)
Return air temperature sensor(TH3)
Ambient temperature sensor(TH2)
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