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8. Commissioning
Commissioning by trained technical personnel may only be performed when any risk has been ruled out.
The following checks should be performed in accordance with the installation and operating manual and
the regulations in force:
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Correctly sealed installation of the unit and duct system.
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Check the duct system, unit and medium lines, if present, remove any foreign bodies if necessary.
•
The intake opening and inflow into the unit must be clear.
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Check all mechanical and electrical protection measures (e.g. earthing).
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Voltage, frequency and type of current must correspond with the rating plate.
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Check all electrical connections and wiring.
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Check any electrical, switching, safety and control devices connected.
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The unit may not be switched on when the housing is open.
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Measure electricity consumption at operating speed and compare with the rated current.
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Check the fan for excessive vibrations and noise generation.
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Electricity warning (hazardous voltage)!
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Failure to observe the hazard may result in death, injury or damage to property.
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Before performing any work on conductive parts, always disconnect the unit completely from
the electricity supply and make sure that it cannot be switched back on again.
•
Never reach into the impeller or other rotating or moving parts.
»
Failure to observe the hazard may lead to serious injury.
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Work may only be performed once the impeller has come to a complete halt.
•
Caution! Burning hazard.
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Failure to observe the hazard may result in personal injury and/or damage to property.
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Do not touch the surface until the motor and heater have cooled.
Control unit
The control unit is connected to the supply air unit’s control system with a control cable.
A connector on the control cable is plugged directly into the socket on the control unit from beneath
(see Fig. 9). On the unit, the control cable is first fed through a cable gland (see Fig. 8), placed in the
cable duct and then connected to the RJ10 socket provided in the controller board. The control cable
must not be shortened. Any excess length must be stowed outside of the housing. If the cable is too
short, extensions can be ordered from the manufacturer or supplier. Alternatively, a 4-wire data cable
with 120 Ohm resistance can also be connected. This is fed through the back wall of the control unit
and connected to the spring-loaded terminals. In the unit, instead of being connected to the controller
board in the RJ10 socket, the cable is connected in the spring-loaded terminals next to it (see wiring
diagram).
