Alpha 115S, Design, Installation And Servicing Instructions

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2.11 BOILER SCHEMATIC
Alpha CD90S/115S - Technical Data
1 Tundish
2 Pressure relief valve (4 bar)
3 Drain point
4 Primary pressure switch
5 Gas valve
6 Fan
7 Injector
8 Air inlet pipe
9 Ignition electrodes
10 Combustion chamber cover
11 Heat exchanger
12 Flue hood
13 Air inlet sampling point
14 Flue sampling point
Fig. 3
15 Automatic air vent
16 Primary flow temperature sensor
17 Primary return temperature sensor
18 Overheat thermostat
19 Flue overheat thermostat
20 Burner
21 Flame sensing electrode
22 Venturi
23 Venturi positive point (P2)
24 Pump
25 Condensate trap
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Return Gas Flow
Condensate
discharge