Duco DucoBox Focus Installation Manual - Page 12
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07 Air calibration
For the system to work correctly, it needs to be configured� This will ensure its operation is as quiet as possible and energy-ef-
ficient� For information on determining the ventilation flow rates, see Instruction Sheet Checking Product References and Flow
Rates at www�duco�eu�
07.A Air calibration procedure for DucoBox Focus
The air calibration procedure must be carried out on a calm day (no more than wind force 2: leaves rustling,
feeling the wind in one's face)�
DucoBox Focus air calibration
The exhaust vents must be set depending on the situation� Proper pre-setting makes for rapid and correct configuration�
1
SITUATION 1 :
one vent per valve
Set all vents to the fully open
position, regardless of the desired
flow rate�
When using DucoVent Design exhaust vents always leave
the outer ring in place for acoustic effect�
12
L2000631 Installation guide for DucoBox Focus (Revision L | 06.09.2022)
SITUATION 2 :
Multiple vents per valve
with equal flow rates
Set all vents to the fully open
position, regardless of the desired
flow rate� Set the valve to the
sum of the vent flow rates via the
display menu or the Duco Network
Tool� Example: 2 vents, 50 m³/h
each → set valve to 100 m³/h�
+
=
m
Flow rate
75m3/h
50m3/h
25m3/h
SITUATION 3 :
Multiple vents per valve
with different flow rates
Set the exhaust vents so they
match the desired flow rate in line
with the table below� Set the valve
to the sum of the vent flow rates
via the display menu or the Duco
Network Tool� Example: 25 m³/h
vent and 75 m³/h vent → set valve
to 100 m³/h�
+
100
/h
3
DucoVent
DucoVent Basic
Design
and other vents
=
100
m
/h
3
100% open
50% open
25% open