Alpha Evoke 28NX - Location of Boiler Components; Boiler Component Diagram and Labels

Alpha Evoke 28NX and 33NX - Routine Servicing
Fig. 7.8
1 Expansion vessel
2 Burner
3 Viewing window
4 Ignition/sensing electrodes
5 Air supply pipe
6 Primary flow temperature sensor
7 Fan
8 Condensate trap
9 DHW flow switch
10 Gas injector
11 Gas valve
12 DHW heat exchanger
13 Boiler drain point
14 DHW temperature sensor
15 Test points (air A, flue F)
16 Flue temperature sensor
17 Four fixing nuts for item 18
18 Combustion chamber front assembly
19 Venturi
20 Pressure signal vent fitting
21 Primary return temperature sensor
22 Primary pressure switch
23 Automatic air vent
24 Boiler pump
25 3 bar safety valve
26 By-pass
27 Diverter valve
28 Safety valve operation indicator
29 Primary heat exchanger
15
16
19
20
21
22
23
24
25
26
27
17
18
28
AF
6
11
14
1
4
5
8
9
10
3
2
12
7
13
29
7.8 LOCATION OF BOILER COMPONENTS
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