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TECHNICAL CHARACTERISTCS
TR05A153.B1107
11
3.3 Internal components
LEGEND
1.
EXPANSION VESSEL
2.
FLUE HOOD
3.
COMBUSTION CHAMBER
4.
ROOM SEALED CHAMBER BULKHEAD
5.
IGNITION ELECTRODE
6.
IONISATION ELECTRODE
7.
BURNER
8.
PRIMARY HEAT EXCHANGER
9.
SECONDARY HEAT EXCHANGER
10.
HEATING SAFETY THERMOSTAT
11.
ELECTRONIC GAS VALVE
12.
PUMP WITH AIR VENT
13.
AUTOMATIC AIR VENT VALVE
14.
3 BAR PRESSURE RELIEF VALVE - HEATING CIRCUIT
15.
SYSTEM DRAIN VALVE
16.
WATER PRESSURE GAUGE
17.
WATER PRESSURE SWITCH
18.
HEATING SENSOR
19.
DHW SENSOR
20.
3-WAY VALVE
21.
IGNITION TRANSFORMER
22.
ELECTRONIC FLOWSWITCH
23.
AUTOMATIC BYPASS
24.
AIR PRESSURE SWITCH
25.
FAN
26.
FLUE SAFETY THERMOSTAT
27.
DHW EXCHANGER
28.
CONDENSATE TRAP
Figure 3: Internal components
1
24
29
21
6
25
24
26
10
18
22
27
20
16
17
11
15
12
13
14
23
28
19
5
7
8
9
8
2
9
4
12
27
13
3