9ecoTEC plus 937 installation and maintenance manual
2.3 Structure and functional elements
The ecoTEC plus 937 consists of
– a modified combination boiler and
– a 15 litre shift load storage tank.
Mains cold water heated by the combi unit is fed to the
heat insulated storage tank by means of a modulating
storage tank charging pump.
The combi unit supplies the shift load storage tank with
electrical energy for the storage tank charging pump.
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Fig. 2.3 Function elements combi unit
Key:
1 Expansion vessel combi boiler
2 Air intake pipe
3 Compact thermal module
4 Ignition electrode
5 Fan
6 Diverter valve with built in automatic adjustable bypass
7 pump
8 Electronics box
9 Pressure sensor
10 Hot water heat exchanger
11 Gas valve
12 Heat exchanger
13 Connection flue duct
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Fig. 2.4 Function elements shift load storage tank
Key:
1 Shift load storage tank expansion vessel
2 Aqua-Sensor
3 storage charging pump
4 NTC temperature sensor - hot water outlet
5 Storage tank pressure relief valve
2.4 Identification plates
The identification plate of the ecoTEC plus 937 is located
on the underside of the unit.
Unit description, data and dimensions 2
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