12
IT
IT
GB
GB
2. INSTALLATION ISTRUCTIONS
What follows determines the validity of the warranty.
1. The installation must:
- Be performed by a qualified installer.
- Include, where necessary, a pressure reducer for the inlet water.
- Include a relief valve calibrated as shown on the technical data label
affixed to the boiler.
- Include an expansion tank (see expansion tank sizing table ) com-
mensurate with the sizes of the boiler (it is recommended to arrange
for the calculations to be performed by a heating engineer).
2. Before start-up check tightening of the flange screws (apply
a torque of 20 Nm).
3. The temperature of the contents of the boiler must always be below
95°C.
4. Internal cleaning must be performed every 12 months.
5. To prevent corrosion the electronic anode supplied with the boiler
must be installed.
6. As is known, contact between different metals can cause corrosion.
In this sense, it is advisable to insert an appropriate dielectric cou-
pling between the attachments located inside the boiler and the
corresponding pipes.
7. The electrical conductivity of the water must not be less than 150 μS/
cm or greater than 1000 μS/cm.
Expansion tank dimensioning
Values in relating to:
- pre-load pressure of 2.5 bar
- relief valve calibration pressure of 6.0 bar
- expansion from 10 to 90°C.
In systems with domestic water recirculation rings, the volume of the
water in the pipes should also be considered.
Expansion tank
volume (I)
Model kettle / accumulation
200
300
500
750
1000
1500
2000
3000
40°C
3,1
4,3
7,4
11,2
14,3
21,5
29,8
44,4
50°C
4,9
6,7
11,5
17,6
22,5
33,6
46,8
69,6
60°C
7,0
9,6
16,5
25,2
32,1
48,0
66,8
99,4
70°C
9,4
12,8
22,1
33,7
43,0
64,4
89,6
133,2
80°C
12,0
16,4
28,3
43,2
55,1
82,5
114,8
170,7
90°C
14,9
20,4
35,0
53,5
68,3
102,2
142,2
211,5
Storage temperature
Bracket Support
Led
Equipment
Electrode
Electronic anode
Tanks Comfort V, Comfort S and Storage tanks vitrified are supplied with
nr. 1 electronic anode (single for models until 1000, twice for models from
1500 to 3000 s).
Wiring diagram
The anode has a 1/2 “M: it may be necessary a reduction from 1” 1/ 4M
to 1/2 “F (not supplied) depending on the attack chosen for the intallation
electronic anode.
For the commissioning of the anode electronic see the manual provided.
