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USE
DESCRIPTION OF UNIT
2.2 Electrical diagram
Figure 2.1
1
Gas separate valve 1
2
Gas proportional valve
3
Thermostat
4
Main board
5
Direct current fan
6
Power cord
7
Flame detector
8
Igniter
9
Earth
10
Display
11
Water inlet temperature sensor
12
Water outlet temperature sensor
13
Water flow sensor
14
Gas separate valve 3
15
Main gas valve
16
Gas separate valve 2
GND
1
2
3
5
4
6
7
8
9
10
11
12
13
16
14
15
