TECHNICAL CHARACTERISTCS
TR05A140.B1107
10
3.3 Internal components
LEGEND
1. PRIMARY CONDENSING HEAT EXCHANGER
2. PREMIX BURNER UNIT (GAS MANIFOLD + BURNER)
3. HEAT EXCHANGER CONDENSATE DRAIN CONNECTION
4. IONISATION ELECTRODE
5. IGNITION ELECTRODE
6. FAN
7. VENTURI
8. IGNITION TRANSFORMER
9. ELECTRONIC GAS VALVE
10. 3 BAR PRESSURE RELIEF VALVE – HEATING CIRCUIT
11. AUTOMATIC AIR VENT VALVE
12. HEATING SAFETY THERMOSTAT
13. HEATING SENSOR
14. PUMP WITH AIR VENT
15. WATER PRESSURE SWITCH
16. FLUE HOOD
17. FLUE SAFETY THERMOFUSE
18. EXPANSION VESSEL
19. ROOM SEALED CHAMBER BULKHEAD
20. CONDENSATE TRAP
21. WATER PRESSURE GAUGE
22. SYSTEM DRAIN VALVE
23. CONDENSATE DRAIN PIPE
24. AUTOMATIC BYPASS
25. PRIMARY HEAT EXCHANGER MANUAL AIR VENT VALVE
Figure 3: Internal components
13
24
19
5
15
17
3
2
16
23
9
18
1
12
21
20
7
6
10
14
22
11
8
4
1
11
9
19
14
12
6
5
4
16
2
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