4.2 General view and main components
5
Sealed chamber
7
Gas inlet
8
Domestic hot water outlet
9
Cold water inlet
10
System delivery
11
System return
14
Safety valve
16
Fan
19
Combustion chamber
20
Burner assembly
26
Combustion chamber insulation
27
Copper exchanger for heating and hot water
28
Fume manifold
29
Fume outlet manifold
32
Heating circulating pump
36
Automatic air vent
82
5
56
28
278
81
20
194
42
95
10
8
fig. 26 - General view
cod. 3540R880 - 01/2009 (Rev. 00)
NINFA N LOW NOX 24 MCS
29
44
7
9
136
11
39
37
37
Water inlet filter
39
Flow regulator
42
DHW temperature sensor
44
Gas valve
56
Expansion tank
81
Ignition and detection electrode
74
System filling cock
95
Diverter valve
114 Water pressure switch
136 Flow meter
194 Exchanger
278 Double sensor (Safety + Heating)
297 Air pressure transducer
297
16
27
26
19
14
36
114
32
74
EN