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41
Control diagram
BCH - 25 & 30, 230.3.50, 400.3.50
A1:
B1:
B2:
B3:
F2:
F3:
F5:
F6:
F7:
M1:
M2:
M3:
R2:
R3:
R4:
RD:
ELECTRONIC
PLAQUE
OUTDOOR
SENSOR
DISCHARGE
SENSOR
LIQUID
SENSOR
INDOOR F
A
N
THEMAL
RELA
Y
OUTDOOR
F
AN THERMAL
RELA
Y
AUT
OMA
TIC
PRESSURE
CUT
-OUT28 bar
24V AMBIENT
THERMOST
A
T
AIR FLOW
RA
TE
CONTROL
COMPRESSOR
INDOOR F
A
N
MOT
OR
OUTDOOR
FA
N
DUCT
HEA
TER
DRAIN P
A
N
HEA
TER
CASING
HEA
TER
DEFROSTING
RELA
Y
I-1876/a
BCH-25,30
230.3.50
400.3.50
WHEN
AN ELECTRIC HEA
TER IS INST
ALLED,
FIT
AN F7
AIR FLOW CONTROL
*
Y1
A1
F2
4A
B
B1
72
B
B1
KM2
(14)
B2
13
14
K14
75
3
6
K5
(16)
K1
(14)
3
4
76
KM3
74
K1
11
11
9
9
6
6
79
78
O
R
B
Y
W
G
O
R
B
Y
W
G
F6
B
KM2
77
1
2
3
4
5
6
13
14
(02)
(10)
F2
13
14
(02)
10
10
2
2
K5
(16)
45
78
K5
(16)
K4a
12
12
1
1
7
7
3
3
4
4
8
8
K5
1
2
3
4
5
6
13
14
(03)
1
2
3
4
5
6
13
14
(01)
1
2
3
4
5
6
13
14
(06)
(2)
24 V
T1
63 V
A
L
F1
2A
220 V
240 V
S1
L1
K4a
(9)
1
2
K14
(12)
1
2
K1
(14)
1
2
(L3)
N
N
N
1
N
R3
14
13
K12
(4)
17
15
14
91
1
10
8
7
6
5
4
3
12
13
B1
B2
B3
A2
A1
16
73
B
P
A1
A2
F3
(03)
12
F5
230V.1.50 Hz
A2
A1
13
14
A2
*
F7
1
2
3
4
5
6
13
14
(07)
25
K15
K12
21
23
A2
A1
A2
A1
X3/5
X2/5
X2/7
KM1
A2
A1
X3/4
X2/4
RD
R4
R1
R2
M1
M3
M2
K12
13
14
THE COMPONENTS INCLUDED IN
THESE BOXES
ARE NOT SUPPLIED BY
THE MANUF
ACTURER.
THE COMPONENTS INCLUDED IN
THESE BOXES
ARE ST
ANDARD
ACCESSORIES SUPPLIED BY
THE MANUF
ACTURER.