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.