FK [b]

Main features

• Cleanable commissioning box for extract air dfffusers

• Designed for ceiling mounted diffusers

• Integrated measuring rod and removable commissioning damper

• Low installation height

Description

• Cleanable plenum with measurement and commissioning functionality

• For ceiling mounted extract air applications.

• Supplied for duct dimensions Ø160/200/250/315 mm.

• Standard version in unpainted hot-dip galvanized sheet steel


Compatible diffusers:
• E5O
• NAP/NAP-F
• NHL-F
• NPL-F
• NPR-F
• PET/PETI
• PRC/PRCI 
• SCP
• STD
• TSK

Sizes – FK (Ø, mm)
1-step (diffuser dim - duct dim.):
– 200-160
– 250-200
– 315-250
– 400-315


• Hot-dip galvanized steel sheet, internally insulated with washable and sound-absorbing material made of 100% recycled, non-allergenic, hydrophobic PET.


• The outlet of the plenum, is connected to a circular duct.

• An extract air plenum can be mounted directly before a bend.

• The diffuser is connected into the inlet socket of the plenum.

• The diffuser and plenum are delivered separately.

• The distance between the diffuser and the plenum can be extended with circular duct. If the total distance exceeds 500 mm, extension of the measuring hoses and damper cords is also required.

Commissioning
• The plenum is equipped with two damper cords for adjusting the angle of the damper and one hose for measuring the air volume.

• The required air volume is adjusted by pulling the damper cords. Black cord (BK) closes the damper, white cord (WH) opens the damper.

• The air volume is measured using the measuring hose that is connected to the measuring rod in the outlet.

• Measurement must be carried out with a calibrated measuring instrument.

• The commissioning pressure is measured with the diffuser front mounted.

• After commissioning, the damper cords are tied together in a knot, so that the damper can be returned to the commissioned position by simply stretching the cords, e.g. after maintenance and cleaning.