37
925.220.4 - EN
*/4536$5*0/41&35"*/*/(505)&*/45"--&3
1.240 i
Key:
1
Automatic by-pass
2
Water pressure switch
3
Three way valve
4
Gas valve
5
Expansion vessel
6
Ignition electrode
7
Central heating NTC sensor
8
Overheat safety thermostat
9
Flue-water exchanger
10
Flue hood
11
Flue thermostat
12
Flame detector electrode
13
Burner
14
Burner injectors
15
Automatic air vent
16
Pump and air separator
17
Boiler drain point
18
Manometer
19
Pressure relief valve
Figure 21
0609_0403 / CG_1740
heating
domestic
gas
domestic
heating
inlet
water outlet
water inlet
return