Alpha CD50 - Page 34

34
Alpha CD50 - Wiring Diagrams
9.2 FUNCTIONAL FLOW WIRING DIAGRAM
X6
X9
S3
X8
LN
X16
X7
X1
Main
PCB
FUSE 315 mAT
X11
X12
X4 X5
29 30 31 32
40
36
35
11
41
37
12 15
42
18
44
19
45
38
13 16
43
39
14 17
3433 3
55
2
24
49
26
51
25
50
22
47
23
48
2721
46
Clock
(Optional)
1
2
3
4
Pump
Fan
Diverter Valve
Gas Valve
Primary
Temperature
Sensor
Primary
Pressure
Switch
NOCOM
Overheat
Thermostat
Spark
Generator
Flue Limit
Thermostat
Fuse
F2A
2
1
230/240V ~ 50Hz
Fuse 3A
Remove link to connect
external control
N
N
Note:
Main Terminal Block
N
L
L
DHW
Temperature
Sensor
Transformer
N
L
N
TO CONNECT EXTERNAL CONTROL REMOVE LINK
FROM TERMINALS 1 AND 2 AND CONNECT 240 V
SWITCHED LIVE TO TERMINAL 1.
240 Vac
24 Vac
H1
H4
H3
H2
Green LED
Yellow LED
Red LED
Red LED
S10 S3 S2 S1
X10
CH SET
DHW SET
CH CAP
MAX CAP
+ +
+
+
S1 CH set jumper
S2 CH timer jumper
S3 DHW temp off
S10 Range fan speed