44 User Manual
DOL 534 • DOL 539
3.7.2 Maximum Ventilation
Climate/ Ventilation/ Maximum ventilation setpoints
The maximum ventilation function sets a limit to how much of the ventilation system capacity (in percent) the
controller can activate. 100% ventilation corresponds to the animals’ calculated requirement, while ventilation
utilising the total system capacity may reach e.g. 160% (see also the section on extra ventilation).
The function can be relevant to use during very high outside temperatures where ventilation utilising the total
system capacity would make the inside temperature exceed the required temperature. The function can also
prevent young animals from being exposed to a level of ventilation which they do not tolerate.
When you want to override the function, set the Maximum ventilation to the
maximum value (factory setting is 300 %). This way, you make sure that
no limit has actually been set for how much of the ventilation system
capacity can be used.
3.7.3 Zone-controlled Inlet
This section is only relevant for houses where the inlets are set up for zone
control.
In order to neutralize possible temperature differences in very large one-zone houses, the air inlets can be
grouped in up to six zones and each group is adjusted according to the temperature measured by the DOL 53X
controller in that particular zone. When the temperature in an air inlet zone deviates from Temperature setpoint,
DOL 53X adjusts the shutter position of the air inlet.
The temperature setting specifies the level of adjustment to be carried
out by the DOL 53X controller.
The higher the Temp. deviation is set, the slower adjustment.
When the temperature in the air inlet zone deviates from Temperature setpoint, the shutter position will be
adjusted with this factor in relation to the extent of the deviation.
The higher the factor is set, the more the shutter position is adjusted. Also, see example in Technical manual.
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