TF7039GB_A_NOT
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Switch on the main switch.
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Check the function of the bypass damper:
During regular operation, the bypass bell closes slowly (approx. 1 minute) straight after switching on
the device. Check for complete sealing.
The device must be de-energised again by actuating the main switch. Check that the bypass
damper is opened fully and quickly (in only a few seconds).
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Check that the fan is running smoothly (wait for start-up delay).
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Check the power consumption with the information on the type plate.
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Switch off the power again and check that the bypass is opened quickly (a few seconds).
If the bypass function is impaired, the unit must not be commissioned. In this case, you
must consult technical customer service.
The smoke detector must not be covered at any time during operation.
After commissioning has been completed, continue to adjust the exhaust fan.
6.2.1.
ADJUSTING THE EXHAUST FAN
We recommend that you adjust the exhaust fan as described below to ensure the ventilation system operates
correctly.
1. The measurement when adjusting the ventilation system must be carried out
line-by-line. Before starting the adjustment measurements, all exhaust air ele-
ments must be made airtight and an adequate supply of air flow must be en-
sured. Finally, the AWN must be put into operation.
2. The first measurement should be taken on the exhaust air element that is fur-
thest away from the exhaust fan. A suitable differential pressure gauge must
be used for this purpose.
3. The measurements are carried out directly on the exhaust air elements.
A special plug connection makes it easy to measure the negative pressure. As
soon as it is removed, the plug is used to block the humidity control in min. po-
sition (see fig. right).
4. The furthest exhaust air element should have negative pressure of at least 60
Pa so that the required air volumes can be conveyed in accordance with DIN
1946-6 and 18017-3. Negative pressure of 120 Pa should not be exceeded at
the closest exhaust air element to the exhaust fan.
5. When evaluating the pressure conditions, the value of the farthest exhaust air
element is decisive. If negative pressure of less than 60 Pa is measured here,
the exhaust fan must be adjusted accordingly.
6. To adjust the exhaust fan, set the pressure setpoint higher (or lower) (see pic-
ture on the right and the Differential Pressure Control section). If the specified
values are reached, no further settings need to be made.
The negative pressure of the exhaust fan must be set at least high enough to ensure that the
exhaust fan runs trouble-free. If the exhaust fan malfunctions after a short time, the negative pres-
sure set must be increased.
