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33
INSTRUCTIONS PERTAINING TO THE INSTALLER
926.772.1 - GB/IE
Legend:
1
Boiler drain point
2
Manometer (water pressure gauge)
3
Siphon (condensate)
4
NTC delivery heating probe
5
105°C overheat thermostat
6
Gas valve
7
Heat exchanger
8
Flame detector electrode (ionisation probe)
9
Main burner
10
Ignition electrode
11
Air/gas mixture header
12
Mixer with venturi
13 Injector
14 Fan
15
Flue thermostat
16
Flue spigot
17
Automatic air vent
18
Flue joint
19
Hydraulic pressure sensor
20
Pressure gas switch
21
NTC return heating probe
22. BOILER SCHEMATIC
Figure 20