Technical data

22
924.674.3 - GBINSTRUCTIONS PERTAINING TO THE INSTALLER
31. BOILER SCHEMATIC
240 Fi - 280 Fi
Figure 20
Key:
1 DHW priority sensor
2 automatic by-pass
3 water pressure switch
4 three way valve
5 DHW NTC sensor
6 ow sensor with lter and water ow rate limiter
7 3-way valve motor
8 gas valve
9 ignition electrode
10 central heating NTC sensor
11 overheat safety thermostat
12 ue-water exchanger
13 ue hood
14 fan
heating domestic gas domestic heating
inlet water outlet water inlet return
15 air pressure switch
16 positive pressure point
17 negative pressure point
18 ame detector electrode
19 main burner
20 burner injectors
21 expansion vessel
22 plate heat exchanger (D.H.W.)
23 automatic air vent
24 pump and air separator
25 lling the system
26 boiler drain point
27 manometer
28 pressure relief valve
SEALED CHAMBER
0509_2604/CG1646
0606_2701
280 Fi