Biasi Activ A 18S User Manual And Installation Instructions page 15

Fig. 2.9
Fig. 2.10
If a long period of inactivity is envisioned:
• Switch off the electricity supply to the boil-
er, by means of the fused spur isolation
switch;
• Shut off the gas supply cock and the valves
for the water circuits fi tted under the boiler
Fig. 2.11 ;
INSTRUCTIONS FOR USE
14
13
12
11
Close
position
Fig. 2.11
• If necessary, empty the hydraulic circuits
see section "Emptying the c.h. system" to
page 70 .
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