13
USER Section (en)
7654349 (02-09/16)
8.5 Venting the installation
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Take care as the water might still be hot.
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 7.5.
8.6 Draining the installation
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• Slowly turn the knob (C)DQWLFORFNZLVHWRWKHOHIWWRRSHQWKHYDOYH'R
this by hand without using any tools.
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9. TROUBLESHOOTING
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(see the fault tables that follow).
TEMPORARY FAULT (H.x.x.)
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BO-0000076
PERMANENT FAULT (E.x.x)
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BO-0000075
RESET
1
2
3
4
BO-0000026
BO-0000027
C