McQuay MDS030A Manual page 26

Model: MDS150B
380V/3N~/50Hz
R T
KM1 KM2 KM3
OL1 OL2
T2 T2 T2
T1 T3 T1 T3 T1
M M M
~ ~ ~
Constant-speed Constant-speed Digital compressor
compressor 1 compressor 2
Description of the components and parts:
Reversion
DB3A FU Fuse
KM Contactor
HP High pressure switch
Solenoid valve
LPT OL Overload protection
HPT High pressure sensor
TR Transformer
Model: MDS150BR
380V/3N~/50Hz
R T
KM1 KM2 KM3
OL1 OL2
18 19
T2 T2 T2
T1 T1
M
~
Shaft
heater heater
Constant-speed Constant-speed Digital compressor
compressor 1 compressor 2
Description of the components and parts:
Reversion
DB3A Fuse
4WV
KM Contactor
HP High pressure switch
LPT Low pressure sensor Overload protection
HPT High pressure sensor Transformer
FU L
71
T
KM4 KM5
OL4 OL5
21 23 24 26
T3
M
~
Fan motor
OL1 OL3 OL4 OL5
14.0 14.0 3.3A 1.8A
S2.3 S3.4
ON ON
FU
T 71
KM4 KM5
OL4 OL5
21 23 24 25 26
M
~
heater
Fan motor
OL1 OL3 OL4
14.0 14.0 3.3A
S2.3 S3.2 S3.3 S3.4
ON OFF ON ON
LOW-I HI-1 TH7 TH6 TH5 TH3
TR
V1+
black
V1-
V2+
white
V2-
12
OL2
FIX2-OL
MDS-P
OL1 13
14
OL3
DIG-OL
16 17
L1 HP 15 OL4 OL5
HP
L
J18
J1
1
2
KM4
3
PMW
Notes:
Field wiring
1:
2: Factory wiring
3: S1.3~S1.8 set the number of indoor units. S2.1 sets the unit as a master/slave. For details of S2.4~S2.8, see the instructions.
LOW-I HI-1 TH7 TH5 TH3
TR
V2-
OL2 12
FIX2-OL
13
OL1
14
OL3
DIG-OL
OL4 OL5 17
L1 HP 15
HP
L
J18
J1
1
2
KM4
3
PMW
Notes:
1: Field wiring
2: Factory wiring
3: S1.3~S1.8 set the number of indoor units. S2.1 sets the unit as a master/slave. For details of S2.4~S2.8, see the instructions.
page 25
LPT
1 2 3
TH4 TH2 LOW-U HI-U
MDS-M
30
Connecting the indoor unit
Connecting central control system n
EXV1 EXV4
4 8 10 11
KM5 EXV4
5
KM5 KM4 KM2 KM1 KM3
LPT
1 2 3
TH12 TH11 LOW-U HI-U
MDS-M
30
31 Connecting the indoor unit r
32
33 Connecting central control system o
S1 S2 S3
EXV1 EXV4
4 8 10 11
KM5
5
KM5