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Installation and maintenance instructions ecoTEC exclusive 0020193968_05
1
Main PCB
2
Control panel PCB
3
All-gas sensor
4
Gas valve assembly
5
Outdoor temperature sensor, flow temperature
sensor (optional, external), DCF receiver
6
Circulation pump remote control
7
Return temperature sensor
8
Flow temperature sensor
9
Fan
10
Surface-mounted thermostat/burner off
11
24 V DC room thermostat
12
Bus connection (digital room thermostat/control)
13
Prioritising diverter valve
14
Water pressure sensor
15
Warm start sensor
16
Domestic hot water sensor
17
Internal heating circuit flow rate sensor
18
Impeller sensor
19
Internal pump
20
Gas family coding resistor
21
Additional relay (select via D.026)
22
Circulation pump
23
Ignition electrode