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OperatinginstructionsATAGQ-Series
Holiday period:
Adjustthethermostattotheholidayperiod.See
theuserthermostatmanual.Thehotwaterfacility
canbeswitchedoffbymeansoftheprogramkey
onthecontrolpanel.
Re-setting the central heating system:
Switch off thethreeprogramkeys , ,
when these are activated.Switch off the power
supply. When the boiler is being drained one
shouldtakeintoaccountthatapartoftheheating
waterwillremainintheboiler.Whenriskoffrost
arises one should take care that the remaining
centralheatingwaterintheboilerdoesnotfreeze.
The boiler will not function directly. The automatic de-aeration programm of about
17 minutes will start after one of the three programm keys is pressed. The display
will show where A stand s for Automatic de-aeration programm Active
and the number on the right indicates the actual water temperature of the boiler.
Checkthewaterpressureregularlyandtopuptheinstallationwhenneces-
sary.
Theworkingpressureoftheinstallationshouldbebetween1.5and1.7bar
It can take a while before all air has dis-appeared from a lled installation. Es-
pecially in the rst week noises can be heard which indicate the presence of air.
The automatic air vent in the boiler will make this air disappear, which means the
water pressure will reduce during this period and therefore topping up with water
will be necessary to adjust the ow water temperature
Turning the boiler off
Holiday
The ATAG BrainQ room
thermostaat is provided
with a holiday programm.
The holiday period can be
adjusted on the thermostat
itself. The central heating
and DHW supply are swit-
ched off during that period.
There is also the option
that only the central hea-
ting is switched off. With
all of these possibilities the
frost protection system is
active.
12


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ATAG Q25C Installation Guide - Dutch - 48 pages

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