Alpha CD32C - Boiler Schematic

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2.10 BOILER SCHEMATIC
1 - Flow regulator
2 - DHW flow switch
3 - Diverter valve and DHW flow valve
4 - Gas valve
5 - Primary temperature sensor
6 - DHW heat exchanger
7 - Main burner
8 - Primary/condensing heat exchanger
9 - Room sealed chamber
10 - Fan
11 - Pressure differential test points
12 - Flue hood
Fig. 2B
13 - Overheat thermostat
14 - Expansion vessel
15 - Automatic air vent
16 - Pump
17 - Drain point
18 - Pressure relief valve
19 - Primary pressure switch
20 - Ignition electrodes
21 - Flame sensing electrode
22 - DHW temperature sensor
23 - Flue sampling point
Alpha CD24C/32C - Technical Data
24 - Gas service cock
25 - Mains inlet on/off valve
26 - On/off valve (2 off)
27 - Automatic by-pass
28 - Cyclone separator
29 - Condensate trap
30 - Injector
31 - Venturi
32 - Venturi negative point
33 - Venturi positive point
34 - Flue thermostat