18
1-25
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
1.25 BOILER COMPONENTS.
Key:
1 - P.C.B.
2 - Gas valve
3 - Absolute pressure switch
4 - Gas nozzle
5 - Sleeve with seats for Venturi
6 - Air fan
7 - System flow regulation NTC probe
8 - Overheating safety thermostat
9 - Detection electrode
10 - Manifold cover
11 - Condensation module cover
12 - Igniter
13 - Ignition electrode
14 - Flue probe
15 - Condensing module air vent valve
16 - Fumes hood
17 - Sample points (air A) - (flue gas F)
18 - Heat exchanger safety thermal fuse
19 - Manual air vent valve
20 - Condensation module
21 - Heat-exchanger safety thermostat (manual reset)
22 - Burner
23 - Air intake pipe
24 - System return regulation NTC probe
25 - System flow meter
26 - Vent valve
27 - Pump
28 - Condensate trap
29 - Flow manifold
30 - 4 bar safety valve
31 - Gas cock
32 - Draining funnel.
