Alpha CD24C Installation And Servicing Instructions page 32

9.2 FUNCTIONAL FLOW WIRING DIAGRAM
230/240V ~ 50Hz
Fuse 3A
Remove link to connect
external control
Fan
X12
35
Green LED H1
40
Yellow LED H4
Red LED H3
Red LED H2
Transformer
Note: Main Terminal Block
TO CONNECT EXTERNAL CONTROL REMOVE LINK
FROM TERMINALS 1 AND 2 AND CONNECT 240 V
SWITCHED LIVE TO TERMINAL 1.
Alpha CD24C/32C - Wiring Diagrams
32
Fuse
F2A
L
1
2
X1
FUSE 315 mAT
11 12 13 14 X4
36 37 38 39
41 42 43 X11
S3
Primary
Temperature
Sensor
1
2
L
3
4
Spark
Generator
X16
33 34 3 55 2
29 30 31 32
L N
X6
18 19
Main
PCB
DHW SET
CH CAP
X10
MAX CAP
X9
Pump
N
L
COM
Clock
(Optional)
X7
21 22 23 24 25 26 27
CH SET
S1 S2
X8
44 45 46 47 48 49 50 51
DHW
Temperature
Sensor
DHW Switch
NO
Primary
Pressure
Switch
N
N
N
N
Overheat
Thermostat
Flue Limit
Thermostat
Gas Valve