Technical data

24
924.674.3 - GBINSTRUCTIONS PERTAINING TO THE INSTALLER
Key:
1 water pressure switch
2 automatic bypass
3 gas valve
4 ignition electrode
5 central heating NTC sensor
6 overheat safety thermostat
7 ue-water exchanger
8 ue hood
9 fan
10 air pressure switch
11 positive pressure point
(Not featured on 1.140 Fi)
12 negative pressure point
13 ame detector electrode
14 main burner
15 burner injectors
16 expansion vessel
17 automatic air vent
18 pump and air separator
19 boiler drain point
20 manometer
21 pressure relief valve
1.240 Fi
Figure 22
heating gas domestic heating
inlet water inlet return
SEALED CHAMBER
0509_2605/CG1654