41
Alpha InTec 40GS2 - Wiring Diagrams
9.2 FUNCTIONAL FLOW WIRING DIAGRAM
Alpha Control
(Optional)
1
FS
2
CH
3
4
Pump
Gas Valve
Flow
Sensor
FlowSmart
Sensor (optional)
System Pressure Switch
Fuse 3.15 AF 250 V
(on PCB)
230V ~ 50Hz
Fuse 3A
Remove link to connect
external control
N
L
N
DHW Sensor
External Sensor
(optional)
Flue
Sensor
Fan
Diverter
Valve Motor
Overheat Thermostats
Heat Exchanger
Thermal Fuse
X16
X4
2
4
4
2
5
1
1
5
3
3
X12
4
2
3
6 5
1
7
X18
4
2
3
6 5
1
7
8
X14
4
2
3
6
5
1
7
8
9
10
11
X7
4
2
3
6 5
1
X17
3
5
4
1 2
6
X19
2 1
X3
L N 3 4
X10
X9
X11
X15
1
1
2
2
3
3
Fuse
3.15 AF
250 V
Transformer
DHW SET
+
CH SET
+
B A
X5
12 34 5 6
X8
1
X6
R2
N
Spark
Generator
N
N
DHW Flow Switch
Climatic Control (low voltage)
(optional)
X3
L
X3
4
X16
1
X3
N
X16
3
X9
2
2
1
PCB
Note:
Main Terminal Block
PCB Connection
To connect external controls remove link
from terminals 1 and 2 and connect 230 V
switched live to terminal 1.
(24 V DC)
(15 - 20 V DC)
+ -
X3
3
Flame Sensing
Electrode
BUS
X21
X26
50 51 52 53 54 55 56
57 58
Relay Board
8
9
13
12
11
10
X20
6
7
5
M
FlowSmart
3-way Valve
(optional)
