4.3 Plumbing circuit
126
78
278
27
20
44
95
241
42
7
Gas inlet
8
DHW outlet
9
DHW inlet
10
System delivery
11
System return
14
Safety valve
20
Burner assembly
27
Copper exchanger for heating and domestic hot
water
32
Heating circulating pump
36
Automatic air vent
42
DHW temperature sensor
50
10
8
7
fig. 26 - Plumbing circuit
cod. 3540G380 - 02/2007 (Rev. 00)
NINFA 32 MC
136
9
11
44
Gas valve
56
Expansion tank
74
Heating system cock
78
Anti-backflow device
81
Ignition and detection electrode
95
Diverter valve
114 Water pressure switch
126 Fume thermostat
136 Flow meter
241 Automatic by-pass
278 Double sensor (Safety + Heating)
56
81
114
36
14
32
74
GB