seaLeD chaMBer
heating
inlet
Figure 0
Key:
1 DHW NTC priority sensor
automatic by-pass
3 water pressure switch
4 three way valve
5 DHW NTC sensor
6 flow sensor with filter and water flow rate limiter
7 3-way valve motor
8 gas valve
9 ignition electrode
10 central heating NTC sensor
11 overheat safety thermostat
1 flue-water exchanger
13 flue hood
14 fan
instructions pertaininG to the
31. BOIlER SCHEMatIC
240 fi - 280 fi
domestic
gas
domestic
water outlet
water inlet
instaLLer
heating
return
15 air pressure switch
16 positive pressure point
17 negative pressure point
18 flame detector electrode
19 main burner
0 burner injectors
1 expansion vessel
plate heat exchanger (D.H.W.)
3 automatic air vent
4 pump and air separator
5 filling the system
6 boiler drain point
7 manometer
8 pressure relief valve
280 Fi
0606_701
94.674. - GB