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DHW
CH1
CH2
DHWCHP4
P3
Prestige
SCHEMA : 4
DHW
CH2
CH1
Prestige
CH
P4
P3
DHW
SCHEMA : 7
en
35
System Control - ACVMax: 660Y2800 • B
EN
FR
NL
ES
IT
DE
PL
RU
PRESET CONFIGURATION 1  SOLO 2 PUMPS
High temperature heating circuits, with additional load pump, possibly with
optional outdoor temperature sensor and room thermostats, and with DHW
circuit.
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 sensor
............. 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
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 sensor
............. 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
35


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