Flexit Nordic S4 User Manual
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Flexit Nordic S4 User Manual

Air handling unit
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115546EN-06
2023-08
Nordic S4
Flexit
GO
ART.NO. 800130, 800131, 800132, 800133
USER MANUAL
Air handling unit

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Summary of Contents for Flexit Nordic S4

  • Page 1 115546EN-06 2023-08 Nordic S4 Flexit ART.NO. 800130, 800131, 800132, 800133 USER MANUAL Air handling unit...
  • Page 2 N O R D I C S 4...

  • Page 3: Table Of Contents

    Contents Automatic control......................6 Functional description of balanced ventilation ............7 2.1. Fans (M1, M2) ......................... 7 2.2. Filters (FI1, FI2) ........................ 7 2.3. Rotor (HR-R) ........................7 2.4. Heating element (EB) ....................7 2.5. Temperature sensors (B1, B3/H1, B4, B6) ............... 7 2.6.
  • Page 4 N O R D I C S 4 Symbols used These products bear a number of symbols used for labelling the actual product and in installation and user documentation. Supply air Extract air Extract air from kitchen DANGER: DANGER! DO NOT ELECTRICITY TOUCH Exhaust air...
  • Page 5 SAFETY INSTRUCTIONS • To avoid the risk of fire, electric • That precautions must be taken shock or injury, read all the safety to avoid the back-flow of gases instructions and warning texts into the room from the open before using the unit. flue of gas or other fuel-burning •...

  • Page 6: Automatic Control

    For more information on the automatic control system, see www.flexit.com. User manual Flexit GO • Flexit GO app • NordicPanel control panel (accessory) To control the ventilation unit via a smartphone/tablet, See manual (120018). download the app from Google Play or the App Store.

  • Page 7: Functional Description Of Balanced Ventilation

    2. Functional description of balanced ventilation 2.1. FANS (M1, M2) 2.6. FOR USE WITH DAMPERS The fans ensure that air enters and leaves the building. 2.6.1. Damper (DA1) They can be individually adjusted for optimal operation. There is a closing air damper in the exhaust air duct to The unit can be regulated at 3 different speeds via the prevent cold draughts.

  • Page 8: Operating The Door

    N O R D I C S 4 3. Operating the door 1. Turn the screw in the lock 90°. 2. Flip up the lock handle 3. The lock handle needs to be lifted right up to release. Therefore press the lock handle right up while opening the door.

  • Page 9: If A Door Needs To Be Removed

    3.1. IF A DOOR NEEDS TO BE REMOVED The door can be lifted off when it is open between 40º and 105º (see Fig. 1). If there is limited space in front of the unit, the lock screw on the underside of the unit can be unscrewed (see Fig. 2) and the door pushed out sideways (see Fig. 3). In this case it can be open less than 40º.

  • Page 10: Cleaning And Maintenance

    N O R D I C S 4 4. Cleaning and maintenance To avoid accidental swapping of the Before opening the door: Switch fans, it is recommended that only off the heat, let the fans continue one fan is switched off at a time. for 3 minutes to remove hot air, unplug the unit and wait 2 minutes before opening the doors.

  • Page 11: Changing The Filters

    It is important to use a Flexit original filter. If you use a filter other than a Flexit original filter, the ventilation unit may not work as intended. Flexit therefore accepts no liability for any operating faults. Change both filters (supply air and exhaust air) at the same time.
  • Page 12 N O R D I C S 4 To take out the filters: 1. Unplug. 2. Remove the cover, if there is one, on the filter compartment. 3. Grip the handle and pull the filter out. 4. Insert a new filter.

  • Page 13: Changing The Brush Strips

    4.3. CHANGING THE BRUSH STRIPS The brush strips become worn over time. If they do not lie tightly against the rotary exchanger, it may be necessary to change them. Alternatively, they may be moved closer to the rotor, as the profile they are mounted in has two grooves. 2. Pull the cable lug out to disconnect the earth on the circuit board.
  • Page 14 N O R D I C S 4 7. Pull the rotor module right out and position it with 8. Undo the screw in the centre of the steel profile. the brush strips facing up. Release the top of the sealing strip so that the profile can be removed. 9. Flip off the brush strip profiles with a screwdriver, etc. 10. Pull the brush strips out of the groove. There are 4 brush strips on the rotor, 2 on each side.

  • Page 15: Cleaning The Rotor

    4.4. CLEANING THE ROTOR 12. Press the brush strip profile back into place. A high-impermeability filter is installed in the unit. It is not therefore usually necessary to clean the rotor. If, for any reason, it should still be necessary, dust can be removed with a soft brush. Further cleaning is possible by removing the rotor, spraying it with a grease solvent and then blowing it clean from the opposite side. Distance approximately 60 mm and max. pressure 8 bar. Ensure that the motor is not exposed to water during cleaning.

  • Page 16: Maintenance Table

    N O R D I C S 4 5. Maintenance table Component Action Interval Filter Filters must be changed at least once a year. It is best to change them twice a year, before and after 6-12 months the pollen season. Check that the filter seal is completely tight. As standard, a maintenance reminder to change the filter will appear every 6 months. Fans The fan in a unit connected to a kitchen hood should be inspected once a year.

  • Page 17: Troubleshooting

    6. Troubleshooting Type of fault Remedial action Cold draughts Check which supply temperature has been selected. See control panel. Check that the rotor rotates. Check that heating comes on. New extract filter needed. Fans not working Check that power is connected to the unit. Check that the overheating thermostat has not cut out.

  • Page 18: Complaints

    N O R D I C S 4 7. Complaints Warranty claims will only be valid if the instructions in the manuals have been followed. Complaints about this product may be raised in accordance with the applicable terms of sale, provided that the product has been used and maintained correctly.
  • Page 19 N O R D I C S 4...
  • Page 20 The product is listed in the database for building products that can be used in Nordic Swan Ecolabelled buildings. Flexit osallistuu asuntoilmastoinnin ECP-ohjelmaan. Tarkista sertifioinnin voimassaolo: www.eurovent-certification.com Flexit AS, Moseveien 8, N-1870 Ørje www.flexit.com...

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800130800131800132800133

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