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Alpha HE CB25/33, SY25 - Technical Data
2.11 HE SY25 BOILER SCHEMATIC
Fig. 2b
3
-
Gas valve
4
-
Primary pressure switch
6
-
Main burner
7
-
Ignition electrodes
8
-
Primary heat exchanger
9
-
Room sealed chamber
10
-
Pressure tube
11
-
Fan
12
-
Air pressure switch
13
-
Flue sample point
14
-
Condensing heat exchanger
15
-
Flue limit thermostat
16
-
Expansion vessel
17
-
Primary temperature sensor
18
-
Overheat thermostat
19
-
Flame sensing electrode
20
-
Condensate trap
21
-
Automatic air vent
22
-
Pump
24
-
Drain point
25
-
Pressure relief valve
27
-
By-pass
28
-
Isolating valve
29
-
Isolating valve
34
-
Gas service cock
Summary of Contents for Alpha HE CB25
Page 34: ...34 Alpha HE CB25 33 SY25 Wiring Diagrams 9 2 HE SY25 ILLUSTRATED WIRING DIAGRAM...
Page 35: ...35 9 3 HE CB25 33 FUNCTIONAL FLOW WIRING DIAGRAM Alpha HE CB25 33 SY25 Wiring Diagrams...
Page 36: ...36 9 4 HE SY25 FUNCTIONAL FLOW WIRING DIAGRAM Alpha HE CB25 33 SY25 Wiring Diagrams...
Page 39: ...39 Alpha HE CB25 33 SY25 Fault Finding 10 4 FAULT FINDING SOLUTIONS A to F...
Page 40: ...40 Alpha HE CB25 33 SY25 Fault Finding 10 5 FAULT FINDING SOLUTION SECTIONS G to J...
Page 41: ...41 Alpha HE CB25 33 SY25 Fault Finding 10 6 FAULT FINDING SOLUTION SECTIONS K to L...
