Description of the appliance
12 Installation and maintenance instructions ecoTEC plus 0020116700_01
3
3 Description of the appliance
Design
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3.1 Functional elements of the VU system boiler
Key
1 Gas valve
2 Water pressure sensor
3 Venturi with mass flow sensor
4 Heat exchanger
5 Connection for the air/flue gas duct
6 Expansion vessel
7 Air intake pipe
8 Compact thermal module
9 Ignition electrode
10 Fan
11 Automatic air vent
12 Pressure gauge
13 Heating pump
14 By-pass valve
15 Expansion relief valve
16 Electronics box
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3.2 Functional elements of the VUW combination boiler
Key
1 Gas valve
2 Water pressure sensor
3 Venturi with mass flow sensor
4 Heat exchanger
5 Connection for the air/flue gas duct
6 Expansion vessel
7 Air intake pipe
8 Compact thermal module
9 Ignition electrode
10 Fan
11 Automatic air vent
12 Pressure gauge
13 Heating pump
14 By-pass valve
15 Expansion relief valve
16 Electronics box
17 Diverter valve with bypass
18 Impeller sensor (hot water)
19 Secondary heat exchanger
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