DOL 634 CE
Technical User Guide
35
Select the menu
Technical | Installation | Manual installation | Climate | Ventilation | Air outlet|
Select a type of outlet
| Fan speed control
Stop fan
Voltage at 0 % fan capacity.
Full speed
Voltage at 100 % fan capacity.
Note that the factory setting for both menu items is 5.0 V. The house controller will send an alarm if the settings
are not adjusted.
10.6.2.1.2 Dynamic MultiStep
See section Setting of Exhaustion (MultiStep) for a general description of MultiStep.
Dynamic MultiStep makes it possible to reduce power consumption for the fans in the MultiStep system. This is
achieved by the fans' ability to run at two speeds (Low and High) and by letting them run as long as possible at
low speed.
When a low level of ventilation is needed ventilation is carried out as an ordinary MultiStep system, but the fan
output is limited so that it can only provide a percentage of the fan's maximum capacity.
All exhaust units that are set up to run only in the low area in the Dynamic MultiStep system must be able to run
at reduced capacity.
When a high degree of ventilation is required, the fan output varies steplessly from low to full speed and the
flaps are fully open.
0-10 volt output
The 0-10 V output makes it possible to run at low speeds on the
fan, and from here to run the fan steplessly up to full speed.
Low speed and Full speed
When a fan connect to a 0-10 V output has been selected, a
voltage value must be set which corresponds to the fan running
at low and full speed.
Please note that most fan types have stopped at 10 volt.
Depending on which type of fan has been selected, the voltage
is set at low speed to 4-6 volts.
For each MultiStep unit, set whether it should be activated
when the Dynamic MultiStep system runs at high speed, at low
speed or with both.
