INSPECTION
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12 INSPECTION
B The activities to be included in an annual inspection
and maintenance contract can be found in the
inspection and service record log book (Æ pages 63
and 69).
12.1 PREPARING THE HEATING SYSTEM
FOR INSPECTION
B Switch off the power supply to the heating system.
Fig. 100 Switch off the power supply to the heating system
B Close the gas valve [1].
B Close the isolating valves[2].
Fig. 101 Closing the valves (here: in closed position)
12.2 OPENING THE BOILER DOOR
B Turn the vent key through a quarter rotation to undo
the boiler door lock (Æ detailed picture).
B Push the fastener down and open the boiler door.
Fig. 102 Opening the boiler door
12.3 CARRY OUT A VISUAL CHECK FOR
GENERAL SIGNS OF CORROSION
B Check all gas and water-bearing pipes for signs of
corrosion and for leaks.
WARNING: Damage to the installation due
to insufficient or improper cleaning and
maintenance.
B Inspect and clean the heating system
once a year.
B Carry out maintenance as required.
Immediately remedy faults. This will
avoid further damage to the system!
DANGER:
Danger of fatal accident due to electric
current when the boiler is on.
B Before opening the boiler:
Switch off the power supply to the boiler
by isolating the supply and removing the
fuse.
B Secure the heating system so that it
cannot be switched on again
unexpectedly.
ON
OFF
6 720 648 726-080.1TD
DANGER:
Danger of fatal accident from explosive
fumes.
B Only carry out work on gas pipes and
fittings if you are Gas Safe / ACS
registered.
If the boiler door cannot be swung open
completely, remove it (Æ section 13.1
„Removing the boiler door“, page 64).
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