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Design & installation Guide For McQuay MDS Multi System
Model MDS040AR
Model MDS040A
McQuay
BGND
A
AI-IN
HP
LP
OV-COMP1
OV-COMP2
OV-COMP3
NEUTRAL
NEUTRAL
LIVE
C1
PTC
3L21L1 5L3
6T34T2
2T1
KM
C
S
CM
R
JP2JP1
J2
J1
RY7
RY6RY4 RY5
RY3RY1 RY2
MidLet
OutLet
RTN
C-BTM
LOW-FAN
MID-FAN
HI-FAN
DIG COMP
FIXED COMP
PWMV
4WV
TRAN-H
TRAN-L
InLet
OD TEMP
DLT
HP
LP
C3
C2
~
M
~
M
Trans-
former
Connecting indoor
unit communication
Ambient temperature sensor(TH2)
Air discharge temperature sensor of the digital compressor(TH1)
Coil middle
temperature sensor(TH5)
N
1087
2
14
13
3
12
11
N
5
L
N
220V~/50Hz
FU
KM
PWMV
J1.7J1.5
J1.4J1.3J1.2J1.1
J1.6
PTC
LP
HP
ON
OFF
OFF OFF OFFOFF
OFF
OFF
FU
PWMV
KM
C1-3
JP1
JP2
OFFOFF
Description of components and parts:
Symbol DescriptionSymbol
Jumper settingsǖ
DIP switch J1 settings:
DIP switch J2 setting:
J2.6
Description
Compressor start-up unit
Contactor
Capacitor
High pressure switch
Fuse
Solenoid valve
Low pressure switch
Compressor
blue blue
red
red red
white
Fan 1
Fan 2
blue
brown
yellow
orange
blue
brown
yellow
orange
Return air temperature sensor
(TH3)
Notes:
1:
-----------
Field wiring
2:
--------------
Factory wiring
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.
McQuay
B GND
A
AI-IN
HP
LP
OV-COMP1
OV-COMP2
OV-COMP3
NEUTRAL
NEUTRAL
LIVE
RC
C1
PTC
213L2
1L1
5L3
6T3 224T2
2T1
KM
C
S
CM
R
JP2JP1
J2
J1
RY7
RY6RY4 RY5
RY3RY1 RY2
MidLet
OutLet
RTN
C-BTM
LOW-FAN
MID-FAN
HI-FAN
DIG COMP
FIXED COMP
PWMV
4WV
TRAN-H
TRAN-L
InLet
OD TEMP
CN1
DLT
HP
LP
C3
C2
~
M
~
M
JP1
JP2
OFF OFFOFF
Jumper settingsǖ
J1.7 J1.5
J1.4J1.3J1.2J1.1
J1.6
OFFOFF OFF OFFOFFOFF OFF
DIP switch J1 settings:
DIP switch J2 setting:
J2.6
RC
PTC
LP
HP
FU
PWMV
EXV 4WV
KM
C1-2
Description of components and parts:
Symbol DescriptionSymbol Description
Compressor start-up unit
Four-way valve
Contactor
Capacitor
High pressure switch
Fuse
Electric expansion valve
Solenoid valve
Low pressure switch
Ambient temperature sensor(TH2)
Air discharge temperature sensor of the digital compressor(TH1)
Coil inlet temperature sensor(TH4)
Coil middle temperature sensor(TH5)
Coil outlet
temperature sensor(TH6)
Connecting indoor
unit communication
Trans-
former
Return air temperature sensor
(TH3)
Surge suppressor
Notes:
1:
-----------
Field wiring
2:
--------------
Factory wiring
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.
N
1087
2
1413
3
4
EXV
12
11
N
5
L
N
220V~/50Hz
FU
KM
PWMV 4WV
Shaft
heater
Compressor
white
blue red
red
red
Fan 1 Fan 2
blue
brown
yellow
orange
blue
brown
yellow
orange
blue
brown
yellow
orange