8.5
Venting the installation
•
•
•
•
•
•
•
•
•
If the hydraulic pressure of the water in the central heating system is
below 0.8 bar, it is advised to increase the pressure (the recommended
hydraulic pressure is 1.0 - 1.5 bar) as described in section 8.3.
8.6
Draining the installation
• Slowly turn the knob (C)
this by hand without using any tools.
•
9.
TROUBLESHOOTING
(see the fault tables that follow).
RESET
7696305 (01-12/17)
H
E). The digits indicate the
BO-0000076
BO-0000075
C
H" followed by
E
12
BO-0000026
BO-0000027