U-
N
PE
230V
- ~
-50Hz
QF1
U-N
1L
1N
N4
L2
U3
U1
A1
1
0
1
24VAC
230V
AC
9
8
7
YV2
KM1
FU2
1
C3
4
2
16
17
20
21
F3
SA1
3
D1
2
4
14
15
+to
BT1
+to
BT2
GN1
B5
6
GND
signal
+12Vdc
TC1
27
28
26
A5
45
FU1
1
0
F1
F2
5488002300_03
78
+po
BP1
18
19
Supp.
Supp.
20 W
A
YS CONN
5Vcc
DO5
DI3
AI1
AI2
AI3
GND
12Vdc
AO1
20 W
A
YS CONN
DO3
8 W
A
YS CONN
123
KEYB
DO4
DO6
DO1
DO2
DO6
N
DO4
AO5
DI4
DI5
DI1
DI2
AI4
AO3
AO4
AO
11
1
23
1
8
10
9
8
5
12
13
17
16
20
19
7
KM1
22
23
KA1
4
2865731431
56
KM1
230V
AC 1A
MAX
2
GND
14
AO2
white
brown
RD1
13
12
28
KA1
56
F4
8
7
3
FU3
A
N1
F1
A3
34
33
N3
28
27
24
N6
23
N2
26
25
N5
22
21
3
2
1
E1
M
1~
A2
MORSETTI PER INST
ALLA
T
ORE
INST
ALLER TERMINAL
BLOCK
2
2
2
2
3
3
3
7
7
7
7
7
7
7
7
8
8
8
8
8
9
9
10
11
14
14
14
14
15
15
15
15
12
13
17
17
17
18
18
18
18
20
20
20
20
52
52
52
20
20
20
20
20
21
21
22
22
22
22
24
24
24
24
25
28
28
28
28
28
28
28
28
28
28
28
29
29
29
29
30
30
30
30
31
28
32
32
32
31
33
33
34
34
34
34
35
35
35
35
36
36
36
36
37
37
37
37
40
40
40
40
42
43
44
45
KA3
KA3
KA1
11
1
22
24
31
32
33
1L
1N
QM1
QS1
KM1
C1
123
CS
R
Z1
15
2
5
46
0
TC2
24V
AC
4
FU5
FU4
R1
5
18
6
18
6
18
6
17
18
8
M
1~
16
16
7
7
6
R2
16
16
8
23
23
23
23
23
28
28
38
38
38
38
39
39
39
39
AI5
6
24
25
41
41
41
41
19
19
19
19
DI6
15
GND
4
28
32
2
KA4
11
10
KA5
9
8
48
49
47
46
KA4
7
50
50
20
51
KA5
51
B4
3
F7
3
19
52
8
L-N
SA3
1
15
GB 01/2010
BRH FF
SINGLE-PHASE WIRING DIAGRAM
Outline wiring diagram, see the diagram on the unit’s electrical panel
A1
Radio interference suppresser
A2
Electronic controller
A3
System water pump electronic control board
A5
Remote unit control display keypad
BP1
Condenser/evaporator control pressure transducer
BT1
System water heat exchanger inlet temperature sensor
BT2
System water heat exchanger outlet temperature sensor
C1
Compressor start capacitor
E1
System water pump
F1
High pressure switch
F2
Low pressure switch
F3
System water flow switch
F4
System water dif
ferential pressure switch
F7
System pump thermal overload
FU1
T
ransformer protection fuse
FU2
Auxiliary circuit protection fuse
FU3
System water pump protection fuse
FU4
T
ransformer protection fuse
FU5
W
ell water valve protection fuse
GN1
Green compressor ON light
KA1
High pressure switch relay
KA3
Alarm relay
KA4
Not used
KA5
Not used
KM1
Compressor contactor
QF1
Chiller assembly thermal overload switch
QM1
Compressor thermal overload switch
QS1
Door lock disconnect switch
R1
Compressor oil sump heater
R2
System water heat exchanger frost heater
RD1
Red unit shutdown warning light
SA1
On-of
f switch and/or timer input
SA3
Set point of
fset input
TC1
230/24/12 V
AC transformer
TC2
230/24 V
AC transformer
YV2
W
ell water valve
Z1
Compressor
1
Not supplied
2
Optional
3
Sizes 31-41-51-61 only
