Alpha InTec2 28XE - Page 38

38
Alpha InTec² 25XE and 28XE - Routine Servicing
1 N/A
2 Boiler drain point
3 DHW heat exchanger
4 Gas valve
5 DHW temperature sensor
6 Condensate trap
7 DHW flow switch
8 System expansion vessel
9 Air / gas mixer
10 Primary temperature sensor
11 Manual air vent valve
12 Ignition / sensing electrode
13 Test points (air A) - (flue F)
14 Flue temperature sensor
15 Burner cover
16 Overheat thermostat
17 Primary heat exchanger
18 Fan
19 Primary pressure switch
20 Automatic air vent
21 Boiler pump
22 Safety valve (3 bar)
23 3-way valve (motorised)
24 By-pass
25 Safety valve operation indicator
Fig. 6.6
3
2
11
10
14
15
16
17
18
19
20
21
22
23
24
25
4
5
6
7
8
9
12
13
F A