Supplied By www.heating spares.co Tel. 0161 620 6677
15
DOMINA F 24 - 30 E
FERELLA F 24 - 30 MEL
MILOS AIR COMPACT E
Version - 09.2002
2.2 Hydraulic circuit tap water
Hydraulic diagram for tap water
Key
5 Airtight chamber
7 Gas inlet
8 Tap water outlet
9 Tap water inlet
10 System delivery
11 System return
14 Safety valve
16 Fan
20 Burner unit
27 Heat exchanger
29 Fume outlet collar
32 Heating circulator
34 Heating temperature sensor
42 Tap water temperature
sensor
43 Air pressure switch
44 Gas valve
49 Safety thermostat
50 Heating thermostat
56 Expansion tank
74 Heating system cock
81 Ignition electrode
82 Detection electrode
114 Water pressure switch
136 Flow meter
187 Fume diaphragm
When the card receives a signal from the flow meter indicating a tap-water draw of over 2.5 l/min, the
boiler starts working normally for tap water. If heating was in operation, or the pump was anyhow working,
the boiler will in any case give priority to the tap water, stopping the pump. The tap water does not
exchange directly with the products of combustion, but via the heating water in the exchanger, avoiding
sudden changes in temperature.
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