62
EN
5.5
Structure
DUETTO HE 25 EV
22
23
7
9
6
2
1
8
10
11
13
12
15
16
18 17
20
21
14
24
32
30
29
31
19
3
4
5
24
25
26
29
28
4
27
DUETTO HE 35 EV
7
6
2
1
8
11
13
12
15
17
18
16
20
21
14
19
3
4
5
22
23
24
32
30
29
31
24
25
26
29
28
4
27
9 10
1
Thermowell
2
System filling valve
3
Automatic bleed valve
4
Manual relief valve
5
Domestic water pressure switch
6
Instantaneous calorifier
7
Expansion vessel (VE)
8
Relief valve (VS)
9
Domestic cold water inlet fitting (E)
10
Domestic hot water outlet fitting
(U)
11
Smoke outlet fitting
12
System delivery pipe (M)
13
System return (R)
14
Heat recovery device
15
Condensate outlet (SC)
16
Siphon
17
Heat recovery device water inlet
18
Heat recovery device water outlet
19
System discharge valve
20
Appliance support frame
21
Front panel
22
Control panel
23
Top panel
24
Holes for handling
25
Pressure gauge
26
System water pressure switch
27
Storage tank pump (PB)
28
System pump (PI)
29
Side panels
30
Burner (BR)
31
Flame viewing window
32
Cast iron body
Fig. 19
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