Mounting the ventilation unit to the ceiling

An optional ceiling mounting plate is available for the MyVallox 51 CFi ventilation unit. Attaching the ceiling mounting plate:
  • Rafters or other framework: Use M8 thread bars that can bear the weight of the unit.
  • Make sure the mounting plate is level, because this affects the unit position.
  • The top of the white covering strip of the ceiling mounting plate can be fixed against the ceiling. The ceiling mounting plate can also be flush-mounted, in which case the ceiling can be 30 mm lower than the top edge of the white covering strip.

Insulate the channels against condensing water also between the unit and the ceiling mounting plate.

NOTE:
Install the ventilation unit in a place where the temperature does not drop below +10°C.
  1. Fasten the M8 thread bars on the rafter frames or other frame structure and fasten the nuts onto the bars.
  2. Lift the ceiling mounting plate in place.
  3. Push a rubber damper and a washer to each thread bar.
  4. Adjust the nuts so that the ceiling mounting plate is level.
    NOTE:
    The end of the thread bar must be 5 mm or less below the fastening nut. Do not fasten the ceiling mounting plate too tight to the ceiling. There must be nuts above the ceiling mounting plate to prevent the plate from lifting up when the unit is being mounted. Check that the sliding bars move and return to their original position by turning the operating levers (A) to the open position and then back to the closed position.

    The upper edge of the ceiling mounting plate can be installed against the ceiling. Alternatively, a concealed mounting method can be used, in which case the ceiling can be 30 mm below the upper edge.

  5. Check that the condensate insulation rings (at least exhaust air and outdoor air duct) are in place in the outlet collars below the ceiling mounting plate.
  6. Pull out the operating levers (A) (figure 1) and turn them towards the outer sides of the plate so that they are secured in the open position (figure 2).
  7. Remove the ventilation unit's door before installing the ventilation unit to the ceiling mounting plate.
  8. Lift the ventilation unit close to the ceiling mounting plate and feed the cables and the connection box through the hole in the ceiling mounting plate on top of the ceiling.
    NOTE:
    Remember to make a maintenance hatch in the ceiling so that the cables and the connection box can be accessed. The distance between the maintenance hatch and the ceiling mounting plate should be around 500 mm.

    Alternatively, the cables can be fed between the ceiling mounting plate and the ventilation unit to the rear wall.

  9. Lift the ventilation unit up against the ceiling mounting plate (figure 3). Where needed, guide the mounting hooks on the ceiling mounting plate (3B) to the grooves on the side panels of the ventilation unit. Turn the operating levers back to the closed position (figure 4). The levers will lock the unit to the ceiling mounting plate (figure 5). When the operating levers are in the closed position and the unit has been secured to the ceiling mounting plate, the levers should be level with the front edge of the ceiling mounting plate.
  10. Where required, the unit can be detached from the ceiling mounting plate. Remove the door of the unit, lift the unit slightly upwards, pull out both operating levers (A) (figure 1) and and turn them towards the outer sides of the plate so that they are secured in the open position (figure 2).
    NOTE:
    Tighten the upper nut of the thread bars adequately so that the ceiling mounting plate cannot rise upwards.