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15
[EN] GENERAL SECTION
25 X R
30
29
28
15.1
[EN] - Boiler operating elements
1
Water gauge
2
Drain valve
3
Three-way valve (stepper)
4
Pressure transducer
5
Safety valve
6
Circulation pump
7
Lower air vent valve
8
De-aeration valve
12
11
13 14
9
10
7
8
6
5
4
1
3
2
F
E
32
31
9
Air filter
10
Delivery NTC probe
11
Limit thermostat
12
Main heat exchanger
13
Flame detection electrode/Ionisation
sensor
14
Burner
15
Ignition electrode
2
15
16
B
A
D
C
21
16
Ignition transformer
17
Fume analysis sample cap
18
Fumes outlet
19
Fumes probe
20
Expansion vessel
21
Non-return valve
22
Fan
23
Mixer
15.2
[EN] - Hydraulic circuit
A
Cold water inlet
B
Hot water outlet
C
Water tank delivery
D
Water tank return
E
Heating delivery
F
Heating return
1
Non-return valve
2
Drain valve
3
Safety valve
4
Automatic by-pass
5
Three-way valve
15.3
A
Residual head (mbar)
700
650
600
550
500
450
400
350
300
250
200
150
100
50
0
0
100
200
300
35 - 40 X R
30
29
28
24
Return NTC probe
25
Gas nozzle
26
Gas valve
27
Siphon
28
Heating return
29
Heating delivery
30
Gas
31
Return from water tank (if present)
32
Delivery to water tank (if present)
6
Circulator
7
Lower air vent valve
8
Pressure transducer
9
Water gauge
10
Expansion vessel
11
Return NTC probe
12
Primary heat exchanger
13
Limit thermostat
14
Delivery NTC probe
15
Manual air vent valve
16
Water tank (available by request)
Residual head of circulator (Fig. 3)
B
7-metre circulator (factory setted)
Flow rate (l/h)
C
60
41
400
500
600
700
800
900
1000
B
Portata impianto [l/h]
EXCLUSIVE X
32
1
31
C
100
85 (default)
1100
1200
1300
1400
1500
3
29
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