Wiring Diagrams; Illustrated Wiring Diagram - Benchmark Alpha InTec 24X Installation And Servicing Instructions

8

WIRING DIAGRAMS

8.1

ILLUSTRATED WIRING DIAGRAM

Room
thermostat
Link
(optional)
Supply
230 V
~ 50 Hz
Bl
R
Br Bl G/Y
L N 1 2
X20
Relay Board
Bl R Br
X21
Bk
Bl
Br
Remove link
R
to connect
Bl R Br G/Y
Alpha controls
5
R
4
R
3
2
1
Alpha controls (optional)
230 V electrical connections
Boiler
Pump
Ignition
Electrodes
Diverter
Valve
DHW
Br
Bl
Spark
Bk Br
Generator
1 2
Bl
Br Gy
X26
(optional)
50 51 52 53 54 55 56 57 58
Bl
Br
Bl
Br
Bl Bk Bl R
Br Br Gy
L N 3 4 1 2 3 4 5 1 2 3
2 1
X3 X16 X9 X19
B A
X10
R2
1 2 3
Fuse
X11
3.15 AF
DHW SET
+
X15
Transformer
Low voltage electrical connections
Alpha
Climatic Control
DHW
(optional)
Inlet sensor
(optional)
External
-
Sensor
+ Sensor
(optional)
Flame
Sensing
Electrode
8 9 10 11 12 13
G G W W Bk R
W
W Bk G Gy Or Bk
Gy
W R G Gy Or Gy
7 6 5 4 3 2 1 5 4 3 2 1 8 7 6 5 4 3 2
X12 X4 X18
11
10
X6
9
CH SET
8
7
+
X14 6
5
4
X8
3
1
2
1
12 34 5 6
X5
X17 X7
1 2 3 4 5 6 6 5 4 3 2 1
Bk
Bl
R Or
W
Alpha InTec C and X - Wiring Diagrams
System
Pressure
Fan
Switch
DHW
Flow
Flow
Overheat
Switch
Thermostat
DHW
Sensor
Or W Gy Or
R R G G Bk Bl R Gy Or W
Colour Code
Br Brown
Bk Black
Bl Blue
R Red
Or Orange
1
G Green
G/Y Green/Yellow
R
W White
R
Gy Grey
G
G
Remove the link between terminal
block connections 1 and 2 if the
optional Alpha Climatic control or
230 V room thermostat is used.
Br
Bl
Heat
Exchanger
Thermal
Fuse
Flue
Sensor
Gas
Valve
W
Gy
Br
Bk Gy
Bl
37