• Pivot the control unit lid down.
Switch OFF the condensing boiler at the
ON/OFF switch.
The mains terminals are 'live' even
when the ON/OFF switch has been
switched OFF.
• Disconnect the system from the power supply.
Close the gas tap.
• Unlock the casing lid with the l.h. and r.h.
rotating bolts. Release the bottom of the
casing lid and unhook at the top.
4
Maintenance steps
L.h. rotating bolt
R.h. rotating bolt
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