Specifications

Initial start-up
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10
10.1.2 Topping up the heating system
A WARNING!
The wall-mounted condensing gas system boiler must
not be activated at this stage.
The system should be filled with untreated mains water.
z Turn off the boiler by setting the mains switch to "0" (fig. 5,
item 1).
z If necessary open the CH flow and CH return servicing
valves (fig. 4, item 1 and 2).
fig. 5 DBA – Mains switch
ON
OFF
1