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4.2 General view and main components
196
350
81
35
278
42
221
Key
7
Gas inlet
8
Domestic hot water outlet
9
Cold water inlet
10
System flow
11
System return
14
Safety valve
32
Heating circulating pump
35
Air separator
36
Automatic air vent
37
Cold water inlet filter
39
Cold water flow limiter
42
DHW temperature sensor
28
10
8
7
39
136
44
37
fig. 35 - General view
cod. 3541G612 - Rev. 00 - 11/2017
MODENA 38C HE
WILO
9
11
44
Gas valve
56
Expansion tank
81
Ignition/ionization electrode
114 Water pressure switch
136 Flow meter
186 Return sensor
191 Exhaust temperature sensor
193 Siphon
196 Condensate tray
221 Bypass cock
278 Double sensor (Safety + Heating)
350 Fan/Burner
191
56
193
186
14
36
114
32
EN
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