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DHW
CH2
CH1
DHW
Prestige
CH P4 P3
SCHEMA : 8
en
37
System Control - ACVMax: 660Y2800 • B
EN
FR
NL
ES
IT
DE
PL
RU
PRESET CONFIGURATION 4  SOLO 2 PUMPS
High temperature heating circuits, with additional load pump, possibly with
optional outdoor temperature sensor and room thermostats, and with DHW
circuit.
Electrical board terminals Terminal name --> Connected to
ACV Max
123456
1 2 3 4 5 6
W
W
W
W
W
W
4 5 6
1 2 3
1 2 3
4 6
X15
1 2 3 4 5 6 7 8 9 10
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
X11
6 7 8 9 10
1 2 3 4 5
6 7 8 9 10
1 2 3 4 5
16
15
3 4
1 2
X16
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10 11 12 13 14
W
R
Or
Bk
Bk
V
Bk
42 1 3 2 1 1 2 3 1 2 3 4 5 6
8 9 10 11 12
1 2 3 4 5
13
6
14
7
X2
1 2 3 4 5 6 7 8 9 10
W
R
Y
R
Y
BK
BK
W
6 7 8 9 10
1 2 3 4 5
X3
1 2 3 4 5 6 7 8 9 10 11 12
V
W
R
Bk
7 8 9 10 11
1 2 3 4 5
12
6
X1
R
Bk
Y
Y
Bk
Bk
R
R
W
W
V
Y
Bk
Bk
R
Bk
W
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
W
W
W
W
W
W
W
V
1 2 3 4 5
1 2 3 4 5
8
Bk
2 31
1412 13
X12
X9
P14
123
4
123
456
B
V
B
W
P13
B
Or
123
Bk
B
Y/Gr
W
Br
B
Br
Br
Y/Gr
B
B
1 2 3 4 5 6 7 8
8 7 6 5 4 3 2 1
123
5
F00
X100
N
L
N
L
W
ON / OFF
3
230 V ~ 50Hz
1
N
L
N
L
N
L
2
6
B
Y/Gr
Br
B
Y/Gr
Br
Br
B
Bk
B
Y/Gr
Y/Gr
Y/Gr
Y/Gr
Y/Gr
Y/Gr
Y/Gr
V
B
Y/Gr
W
B
Y/Gr
Br
B
Y/Gr
Br
B
Y/Gr
B
Or
Br
B
Br
Y/Gr
B
X101
18
17
20
19
21
24
4
X10
12
X20
16
25
2 1
1
NTC 5
9
2 1
1
NTC 2
10
2 1
1
NTC 1
11
123
1
21234123456
X7
X4
X6
X5
Bus A
Bus - Ground
Bus B
0-10 Volt - Ground
0-10 Volt - Input
Cascade sensor - Ground
Cascade sensor - Input
NTC 3
NTC 4
1
2
22
23
26
X18
V
W
B
W
B
B
9 10 11 12 13 14 15 16
16 15 14 13 12 11 10 9
X100
7
Y/Gr
Y/Gr
B
W
B
W
B
V
B
Br
Y/Gr
B
Br
B
Br
Y/Gr
P4 P3
FL
27
5AT Fuse
5AT Fuse
5AT Fuse
............. ERR --> Error (Alarm)
............. DHW --> DHW pump
............. CH --> CH pump (CH1 circuit)
............. P4 --> P4 pump (CH2 circuit)
............. Flame --> Flame
............. P3 --> P3 pump
ACV Max
123456
1 2 3 4 5 6
W
W
W
W
W
W
4 5 6
1 2 3
1 2 3
4 6
X15
1 2 3 4 5 6 7 8 9 10
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
X11
6 7 8 9 10
1 2 3 4 5
6 7 8 9 10
1 2 3 4 5
16
15
3 4
1 2
X16
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10 11 12 13 14
W
R
Or
Bk
Bk
V
Bk
42 1 3 2 1 1 2 3 1 2 3 4 5 6
8 9 10 11 12
1 2 3 4 5
13
6
14
7
X2
1 2 3 4 5 6 7 8 9 10
W
R
Y
R
Y
BK
BK
W
6 7 8 9 10
1 2 3 4 5
X3
1 2 3 4 5 6 7 8 9 10 11 12
V
W
R
Bk
7 8 9 10 11
1 2 3 4 5
12
6
X1
R
Bk
Y
Y
Bk
Bk
R
R
W
W
V
Y
Bk
Bk
R
Bk
W
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
W
W
W
W
W
W
W
V
1 2 3 4 5
1 2 3 4 5
8
Bk
2 31
1412 13
X12
X9
P14
123
4
123
456
B
V
B
W
P13
B
Or
123
Bk
B
Y/Gr
W
Br
B
Br
Br
Y/Gr
B
B
1 2 3 4 5 6 7 8
8 7 6 5 4 3 2 1
123
5
F00
X100
N
L
N
L
W
ON / OFF
3
230 V ~ 50Hz
1
N
L
N
L
N
L
2
6
B
Y/Gr
Br
B
Y/Gr
Br
Br
B
Bk
B
Y/Gr
Y/Gr
Y/Gr
Y/Gr
Y/Gr
Y/Gr
Y/Gr
V
B
Y/Gr
W
B
Y/Gr
Br
B
Y/Gr
Br
B
Y/Gr
B
Or
Br
B
Br
Y/Gr
B
X101
18
17
20
19
21
24
4
X10
12
X20
16
25
2 1
1
NTC 5
9
2 1
1
NTC 2
10
2 1
1
NTC 1
11
123
1
21234123456
X7
X4
X6
X5
Bus A
Bus - Ground
Bus B
0-10 Volt - Ground
0-10 Volt - Input
Cascade sensor - Ground
Cascade sensor - Input
NTC 3
NTC 4
1
2
22
23
26
X18
V
W
B
W
B
B
9 10 11 12 13 14 15 16
16 15 14 13 12 11 10 9
X100
7
Y/Gr
Y/Gr
B
W
B
W
B
V
B
Br
Y/Gr
B
Br
B
Br
Y/Gr
P4 P3
FL
27
5AT Fuse
5AT Fuse
5AT Fuse
............. DHW sensor (NTC3)
............. Optional outdoor temp. sensor (NTC4)
............. Optional room thermostat 1
............. Optional room thermostat 2
ACV Max
123456
1 2 3 4 5 6
W
W
W
W
W
W
4 5 6
1 2 3
1 2 3
4 6
X15
1 2 3 4 5 6 7 8 9 10
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
X11
6 7 8 9 10
1 2 3 4 5
6 7 8 9 10
1 2 3 4 5
16
15
3 4
1 2
X16
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10 11 12 13 14
W
R
Or
Bk
Bk
V
Bk
42 1 3 2 1 1 2 3 1 2 3 4 5 6
8 9 10 11 12
1 2 3 4 5
13
6
14
7
X2
1 2 3 4 5 6 7 8 9 10
W
R
Y
R
Y
BK
BK
W
6 7 8 9 10
1 2 3 4 5
X3
1 2 3 4 5 6 7 8 9 10 11 12
V
W
R
Bk
7 8 9 10 11
1 2 3 4 5
12
6
X1
R
Bk
Y
Y
Bk
Bk
R
R
W
W
V
Y
Bk
Bk
R
Bk
W
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
W
W
W
W
W
W
W
V
1 2 3 4 5
1 2 3 4 5
8
Bk
2 31
1412 13
X12
X9
P14
123
4
123
456
B
V
B
W
P13
B
Or
123
Bk
B
Y/Gr
W
Br
B
Br
Br
Y/Gr
B
B
1 2 3 4 5 6 7 8
8 7 6 5 4 3 2 1
123
5
F00
X100
N
L
N
L
W
ON / OFF
3
230 V ~ 50Hz
1
N
L
N
L
N
L
2
6
B
Y/Gr
Br
B
Y/Gr
Br
Br
B
Bk
B
Y/Gr
Y/Gr
Y/Gr
Y/Gr
Y/Gr
Y/Gr
Y/Gr
V
B
Y/Gr
W
B
Y/Gr
Br
B
Y/Gr
Br
B
Y/Gr
B
Or
Br
B
Br
Y/Gr
B
X101
18
17
20
19
21
24
4
X10
12
X20
16
25
2 1
1
NTC 5
9
2 1
1
NTC 2
10
2 1
1
NTC 1
11
123
1
21234123456
X7
X4
X6
X5
Bus A
Bus - Ground
Bus B
0-10 Volt - Ground
0-10 Volt - Input
Cascade sensor - Ground
Cascade sensor - Input
NTC 3
NTC 4
1
2
22
23
26
X18
V
W
B
W
B
B
9 10 11 12 13 14 15 16
16 15 14 13 12 11 10 9
X100
7
Y/Gr
Y/Gr
B
W
B
W
B
V
B
Br
Y/Gr
B
Br
B
Br
Y/Gr
P4 P3
FL
27
5AT Fuse
5AT Fuse
5AT Fuse
37


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