Chappee initia MASTER 2.24 FF Installers And Users Instructions page 16

Boiler schematic
Fr
CN
GB
Gr
SP
PT
2.24 CF
heating domestic water gas domestic water heating
inlet outlet
Figure 16
Key:
1 boiler drain point
2 hydraulic pressure sensor
3 gas valve
4 gas train with injectors
5 ignition electrode
6 flue-water exchanger
7 DHW NTC sensor
8 flue gas hood
9 flue gas thermostat
10 central heating NTC sensor
11 flame sensing electrode
12 main burner
13 expansion vessel
14 automatic air vent
15 pump and air separator
16 manometer
17 safety valve
18 boiler filling tap
19 DHW flow priority microswitch
20 automatic by-pass
21 overheat thermostat
inlet return
54