Alpha Boilers SY24 - Boiler Schematic

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2.10 BOILER SCHEMATIC
Alpha SY24 - Technical Data
1 - Gas valve
2 - Primary temperature sensor
3 - Main burner
4 - Main heat exchanger
5 - Room sealed chamber
6 - Fan
7 - Air pressure switch
8 - Flue hood
9 - Overheat thermostat
10 - Expansion vessel
11 - Automatic air vent
Fig. 2
12 - Pump
13 - Drain point
14 - Pressure relief valve
15 - Ignition electrodes
16 - Flame sensing electrode
17 - Flue sampling point
18 - Gas service cock
19 - Primary pressure switch
20 - On/off valve (2 off)
21 - Automatic by-pass