Installation manual

22
Installation
Air volume control
Example:
A dryer type 4350 with a 13.5 kW effect must have an optimum air volume
of 600 m
3
/h.
1. Thespeciedairvolumeof600m
3
/h from column 2 is marked on the
x-axis in the diagram on the following page.
2. Draw a vertical line from this point on the x-axis till it intersects the pres-
sure drop curve.
3. From this point draw a horizontal line till it intersects the y-axis.
4. On the y-axis read the corresponding counter-pressure measured in Pa.
Bymeansofthispressureandthespeciedairvolumetheventpipecan
now be dimensioned.
Outlet dimensioning
It is important that the dryer has the correct air volume compared to each
dryer’s effect.
If the air volume is smaller or larger this will result in a longer drying period.
Table with air volume and dryer effect
Minimum air volume
If the outlet air volume gets below the minimum air volume the micropro-
cessor will report an error and error code E15 will be displayed.
Type Effect Minimum Optimum
kW air volume m
3
/h air volume m
3
/h
4250 6/9 260 360
4250 13.5 260 600
4350 13.5 260 600
4350 18 620 1000
4350 21 620 1000
4250/4350 ** - 1000
** Steam heated