35
OPTIMAX HE PLUS 25 S
Key
16
Fan
32
Central heating pump
44
Combination gas valve
62
Time clock (optional)
81
Spark
Electrode
82
Ionisation
electrode
101
Main p.c.b.
103
Relay
104
Fuse
114
Water pressure switch
186
Return temperature sensor
191
Exhaust temperature sensor
202
Transformer 230V-24V
203
Supply lead
278
Double sensor ( Heating)
fig. 30
Cod. 3540R540 - 02/2009 (Rev. 00)
4.6 Wiring diagram