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8.1 ILLUSTRATED WIRING DIAGRAM - InTec² 25CE, 30CE
8 WIRING DIAGRAM
Alpha InTec² 26E, 30CE and 35CE - Wiring Diagrams
Colour Code
Bk ......Black
Bl .......Blue
Br ....... Brown
G ........Green
Gy ...... Grey
G/Y ....Green/Yellow
Or.......Orange
Pk ......Pink
R ........ Red
V ........Violet
W .......White
Y ........Yellow
Component identification
A19 ..........Removable memory
B1 ............Flow sensor
B2 ............DHW sensor
B4 ............External sensor (optional)
B5 ............Return sensor
B6 ............DHW flow rate measuring device
B9 ............DHW inlet sensor
B10 ..........Flue sensor
B24 ..........Flow safety sensor
E3 ............Ignition and detection electrode
M1............Boiler pump
M20..........Fan
M30..........3-way valve motor
M40..........DHW flow rate regulator
S5 ............System pressure switch
T1 ............Transformer
T2 ............Ignition unit
X70 ..........Safety thermostat low temperature jumper
Y1 ............Gas valve
CH SET
+
1
6
X7
Programmer clock
(optional)
X21
X26
50 51 52 53 54 55 56 57 58
X20
Relay board
(optional)
Remove link to
connect clock
Mains Supply
220 V ~ 50 Hz
Remove link
to connect 220 V
room thermostat
Room
thermostat
(optional)
Alpha
Climatic Control
(optional)
When an Alpha Climatic control is connected to terminals 41 and 44
remove the links between terminal blocks 1 and 2
X70
A19
B4
DHW SET
+
R5
R6
Low voltage
connections
220 V
connections
V
V
V
V
Y1
E3
M1
B1
B5
B24
B10
-UB
PWM
GND
HS
+UB
M20
Bk
Or
Bl
W
R
W Bk
Bl
Or
R
Bk
Br
Y
Y
Bl
Bl
W
Or
Bk
R
Or
R
W
Bk
1 2
3
4
S5
Or
Or
R
W
Or
R
W
W
Or
R W
W
R W
G
Br
G
Or
B6
Or
Br
B2
G
G
B9
Y
Y
Bl
Br
Br
Bk
Bl Bk
Bk
Bk
Bl R Bk
R
Br
Br
Or
G
W G Bl
3
1
2
4
R
Bl
Br
R
R
Br
Bl
Bk
Bl
Br
R Br
Or
G Y
Bl Bk Br W G Y
G/Y
G/Y
Br
Bl
G/Y
X1 X2 X4
X9
X10
X11
X12
X13
X16
X6
X8
X5
R2
1
1
T1
T2
Fuse
3.15 AF
N
L
3 2
3
2 1 4 1 7 1
5
1
9
1
5
1
4
1
M30
R
Bl
Br
Y
Bk
Br
Y
R
Br
Br
Bk
Bl
M
X14
6
1
M40
Bk
Y
Pk
Bl
R
Pk
Y
R
Pk
Pk
Bk
Bl
M
X15
6
1
1
6
L
N
A
B
1
2
21
40
41
44
41 14
15
38 39 38 48
GND
Vcc
Vout
PWM
GND
OUT
L N
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