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6.2
Electrical connections
Electrical wiring must be made in accordance with
the regulations currently in force in the country of
destination and by qualified personnel.
WARNING
Riello S.p.A. declines all liability for modifications
or connections other than those shown on these
diagrams.
Use flexible cables according to EN 60 335-1. Regulations:
–
if in PVC sheath, use at least H05 VV-F;
–
if in rubber sheath, use at least H05 RR-F.
All the wires to connect to the burner terminal strip 8)(Fig. 26)
must enter through the supplied fairleads.
D11080
6.3
Current to the UV photocell
Min value for a good work: 70 µA.
If the value is lower, it can depend on:
–
exhausted photocell;
–
low current (lower than 187 V);
–
bad regulation of the burner.
In order to measure the current, use a microammeter of 100 A
c.c., connected to the photocell, as in the scheme, with a capac-
itor of 100 F - 1V c.c. at the same level of the instrument. See
Fig. 27.
Electrical system
The fairleads and hole press-outs can be used in various ways;
the following lists show one possible solution:
1
Pg 13.5 Three-phase power supply
2
M20
3
M20
4
M20
5
Optional holes
6
Open the hole, if necessary add a cable gland
7
6 pole socket for gas valves, gas pressure switch or device
for VPS control
8
Terminal strip
9
4 pole socket for TR thermostat/pressure switch
10 7 pole socket single-phase power supply for TR thermostat/
pressure switch
8
D1143
25
GB
7 pole socket input
4 pole socket input
6 pole socket input
9
10
7
Fig. 26
Fig. 27
20035573
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