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6.4 Shared exhaust duct
It is recommended that each machine is connected to a separate exhaust duct.
When several machines shall use the same exhaust duct the exhaust duct must increase after each machine. The
recommended diameter increase progression is the one in the table.
If several machines are installed on the same exhaust pipe, it is recommended to adjust the airflow on the machines
when all machines are started and running a program with no heat. (Not valid for machines equipped with AFC
(adaptive fan control).
Please consider that unnecessarily large ducts create issues with the draught.
Number of machines
⌀ mm
Exhaust duct
Recommended area
of fresh air intake
Minimum area of
fresh air intake
The exhaust duct diameter must not be reduced.
6.5 Exhaust dimensioning
It is important that the machine has correct air volume compared to each machines power.
If the air flow is smaller or larger this will result in a longer drying period or will lower the performance of the machine.
If the outlet pipe is long or the ventilation is not properly designed it is recommended to clean the outlet pipes periodi-
cally. Usually, longer ducts need more frequent cleaning. If the outlet pipe has too high back pressure it is recommen-
ded to install an exhaust fan.
The exhaust pipes shall be short in order for the machine to work in the best way.
All cover panels must be mounted in order for the machine to work in the best way.
The exhaust duct must be designed so the static back pressure measured in the hole for the NTC-sensor does not
exceed the maximum allowable back pressure specified in "Technical data".
Installation manual
1
2
200
315
m
2
0.16
0.39
0.63
m
2
0.117
0.234
0.351
3
4
5
400
400
500
0.63
0.98
0.468
0.585
6
7
8
500
630
630
0.98
1.56
1.56
0.702
0.819
0.936
fig.W00052
9
10
630
800
1.56
2.51
1.053
1.17
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