Section 4 – Installation
4.5 Electrical installation
Natural Air 180/350 and Natural Air 180/350 Plus :
Connect the ventilation unit to a 230V/50Hz power supply, 5A fuse protection.
Natural Air 180 PH :
Connect the ventilation unit to a 230V/50Hz power supply, 13A fuse protection.
Natural Air 350 PH :
Connect the ventilation unit to a 230V/50Hz power supply, 20A fuse protection.
Note : Natural Air 350 PH rating depends on the power of the Pre-heater and Boost heater (if fitted).
Optional sensors use a low voltage of 24V DC.
All cable inlets are located on the top cover of the ventilation unit.
4.5.1 Installation of the smoke detector bypass Link Wire
If an external smoke detector is NOT used, then a Link Wire MUST be fitted to the Main Connector PCB.
(Alternatively, if the External Sensors PCB is fitted, then the Link Wire can be fitted to the External Sensors PCB
instead).
Fig 4.5a Link wire fitted to Main Connector PCB
Fig 4.5b Link wire fitted to External Sensors PCB.
(See Section 4.5.8 if an external smoke detector sensor is required).
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