Description of functioning
technical
7
Description and function of the hydraulic components:
Compact hydraulic unit:
(Part number MCB2190)
This unit consists of various hydraulic components: circulating pump, safety valve,
drain valve, plate heat exchanger, 3-way valve, fl ow restrictor, automatic drain valve
and automatic bypass. All these together form a compact unit.
Radiators
Hot water outlet
Return
Primary heat
e
xchanger
Primary heat
e
xchanger
1
5
6
2
3
4
1. Pump 4.Plate heat exchanger 7. DHW Thermistor
2. Pressure relief valve
5.Three way valve
3. Draining valve
6.Automatic air vent
Circulating pump head:(Part number MCB3050)
Operates in both CH and DHW mode. Circulation of the primary circuit either to the
radiators or to the plate heat exchanger when operating in DHW mode.
Pump combines a manual and automatic anti-blocking system
The capacity of this pump has a mamometric head of 5 metres for the 24kW boiler.
Safety valve:
Also called an overpressure valve, Its function is to prevent the heating circuit exceed
ing 3.0b pressure. DO NOT USE FOR DRAINING BOILER
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