Orcon 22001090, Installer Manual

Page: 35 / 74

index
35
6. Adjustment
6.1.Set flow rate to HRC
The air volume per fan can be set using the DIP switches on the HRC circuit board.
The upper row of DIP switches (X34) controls the extract air fan and the lower row
(X35) controls the supply air fan.
70% rule for zone control:
When using a zone controller to distribute the air supplied to the house over
several zones, these zones will in most cases not be ventilated simultaneously.
Ventilation takes place only in zones where there is a demand. This means that
the unit does not need to have the full capacity for the entire house. The 2012
Building Decree describes that the unit capacity may be 70% of the total required
supply air flow rate for all rooms.
Example:
Required supply zone 1
Required supply zone
2 Total supply to
dwelling
135
m3/h
165
m3/h
300
m3/h
45%
55%
100
%
Device capacity
210
m3/h
70%