31
OPTIMAX HE PLUS 25 S
Cod. 3540R540 - 02/2009 (Rev. 00)
4.2 General view and main components
fig. 27
Key
5 Room sealed compartment
7 Gas inlet
10 CH flow
11 CH return
14 Heating safety valve
16 Premix fan assembly
19 Combustion compartment
22 Main burner
29 Flue Collar
32 Pump
36 Automatic air vent
44 Gas valve
56 Expansion vessel
81
Spark Electrode
56
22
19
161
196
186
36
114
32
1174410
193
278
81
82
16
5
29 191
14
241
145
154
201
82 Ionisation electrode
114 Water pressure switch
145 System pressure gauge
154 Condensate outlet pipe
161 Heat exchanger
186 Return sensor
191 Flue gas temperature sensor
193 Siphon
196 Condensate collector
201 Fan Venturi
241 Automatic by-pass
278 Double sensor (Safety + Heating)
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