35
Part. A
Part. B
8
7
11
10
A
A
A
A
2
B
B
9
4
4
3
6
8
7
8
5
5
1
3-5
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
- The intervention of the DHW adjustment
thermostat
(when the boiler is connected to
an external storage tank unit)
.
- Check sealing efficiency of the gas circuit and
the internal system.
- Check the intervention of the device against
no gas ionisation flame control. The relative
intervention time must be less than 10 seconds.
N.B.:
on occasion of periodical maintenance of
the appliance it is appropriate also to check and
perform maintenance on the heating system, in
compliance with that indicated by the technical
regulations in force.
