© Munters AB, 2015
59
4.13.2
P
RELIMINARY
S
TEPS
Install a wind speed and rain detector (optional).
Install a wind direction sensor (optional).
1. In
Installation > Setup > Natural Ventilation
, select:
o
Program: This option uses the parameters listed below to determine curtain opening.
o
Level: This option instructs the controller to run Natural Ventilation using the levels shown
in
Device Settings > Vent and Curtain Levels
. If you choose this option, no further setup is
required.
2. If you installed a wind speed and rain detector, in
Installation > Digital Sensors
, define the
sensors accordingly.
3. If you installed a wind direction sensor:
a. In
Installation > Analog Sensor
, define the sensor accordingly.
b. If required, calibrate the wind direction sensor (refer to Wind Direction Calibration, page
104).
c. In
Installation
> Vent/Curtain Setup,
define the each curtain's direction. When making
Natural Program calculations, the controller only takes into consideration winds coming from
a certain direction. Any wind whose source is outside of this area is disregarded.
The number entered here defines the area (the number entered ±90
°
If you enter 90, the range is from 0 - 180
°
If you enter 45, the range is from 315 - 135
°
Figure 8: Wind Direction Sensor Definition
CAUTION
In both cases, winds A or B would be factored into the calculations whereas winds C or
D would not. Only calibrate the sensors if you have reason to believe that they are producing
inaccurate results.
The number entered here defines the area on both sides of the sensor! Figure 10 illustrates a
chicken house with four wind sensors. Sensor 1's Wind Direction parameter is defined as 45
°
or 90
°
total. Winds that come within this area (A) are used for Natural Programing. The
controller disregards winds outside of this area (B & C).
4. If required, in
Installation > Temperature Definition
designate a temperature sensor as an outside
sensor.