NANO VDR 2600, Instruction Book, Page: 65 / 96

Reference Description
5
Ventilation (Only for
air-cooled dryers)
The inlet grids (P) and ventilation fan (E) (if applicable)
should be installed in such a way that natural circulation
of air is guaranteed and recirculating of cooling air is
avoided.
The required ventilation to limit the dryer room
temperature is noted in the ventilation requirement
table.
In ventilation proposal 2 (11) the fan (E) capacity should
match the dryer fan capacity at a pressure head equal
to the pressure drop caused by cooling air ducting.
Maximum allowable pressure drop in ducting after the
dryer = 30 Pa.
The air velocity to the grid(s) has to be limited to 5 m/s.
The direction of the cooling flows may never be
inverted.
6 Alternative 1 -
7 Alternative 2 -
8
Compressed air from
compressor
-
9
compressed air to air
net
-
10 Ventilation proposal 1 -
11 Ventilation proposal 2 -
12 Air inlet pipe -
13 Air outlet pipe -
Type
Cooling air
temperature
limits (°C) Maximum
cooling air
flow (m³/h) Cooling air
temperature
limits (°F) Maximum
cooling air
flow (ft³/h)
VDR 2600 0 - 46 31600 32 - 115 18600
VDR 3150 0 - 46 28600 32 - 115 16830
VDR 3700 0 - 46 28600 32 - 115 16830
VDR 4200 0 - 46 28600 32 - 115 16830
VDR 5050 0 - 40 28600 32 - 104 16830
Table 1: Ventilation requirements
Instruction book
2987 2020 00 63