Chappee 1.65 FF HTE - Boiler Schematic

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21. Boiler schematic
Legend:
1 boiler drain point
2 manometer
3 siphon
4 central heating NTC sensor
5 105°C overheat thermostat
6 gas valve
7 flue-water exchanger
8 flame detector electrode
9 main burner
10 ignition electrode
11 air/gas mixture header
12 mixer with venturi
13 gas diaphragm
14 fan
15 flue thermostat
16 coaxial fitting
17 automatic air vent
18 flue joint
19 hydraulic pressure sensor
Figure 18
GAS
HEATING
INLET
HEATING
RETURN
CONDENSATION
DRAIN
SEALED CHAMBER
0411_0501