Wiring Diagrams; Illustrated Wiring Diagram - Alpha CD24C Installation And Servicing Instructions

9

WIRING DIAGRAMS

9.1

ILLUSTRATED WIRING DIAGRAM

Fan
Or
W
Bl
X12
35
36 37
Green LED H1
40 41 42
Yellow LED H4
Red LED H3
Red LED
H2
Pk
Pk
Pk Pk P Gy
Transformer
Br - Brown
Bk - Black
Bl - Blue
R - Red
Or - Orange
G - Green
G/Y - Green/Yellow
W - White
Gy - Grey
Pk - Pink
P - Purple
(Optional) Clock
5
4
3
R
2
1
R
Br
Bl
Supply
230/240V-50Hz Fused at 3A
Fuse
L N
F2A
Bl
R
Br
33
X1
FUSE 315 mAT
Bk
Br
11 12 13 14 X4
18 19
P
Br
Gy
Bl
39
38
43
X11
S3
R
R
Br
Bl
R R
Primary
Temperature
Sensor
Overheat
Thermostat
Flue Limit
Thermostat
Link
1 2
G/Y
Bk
Br
R Bl
X16
34 3 55 2
29 30 31 32
L N
X6
Main
PCB
DHW SET
CH CAP
X10
MAX CAP
44
X9
Or
Or Or
COM
Pump NO
Primary Pressure
Switch
NOTE: TO CONNECT EXTERNAL CONTROL
REMOVE LINK FROM TERMINALS 1 & 2
AND CONNECT 230/240 V SWITCHED LIVE TO
TERMINAL1.
A FROST THERMOSTAT IS INCORPORATED
WITHIN THE MAIN PCB
Spark
Generator
Bk Or
R
Bk
W
Gy
Flame
Sensing
Electrode
W
R
Or
Bk
Gy
X7
21 22 23 24 25 26 27
Gas Valve
CH SET
S1 S2
45 46 47 48 49 50 51 X8
Br G
Or Bl G
G
G
DHW Temperature
Sensor
Bl
Br
DHW Switch
Alpha CD24C/32C - Wiring Diagrams
1 2
Ignition
Electrodes
W
Br
Bl
31