FLM

Main features

• Designed for extract air

• Integrated Measuring rod and commissioning damper

• Standard box for Netavent extract air diffusers

• Supplied in 0-step and 1-step versions

Description

• Ceiling mounted plenum for extract air applications with measurement and commissioning functionality.

• Available for duct dimensions Ø100-315 (0-step) and Ø100-250 (1-step) mm.

• Standard version is supplied in unpainted hot-dip-galvanized sheet steel

• For facilities with cleaning requirements, please see extract air box FK.


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

Sizes – FLM (Ø, mm)
0-step (diffuser dim - duct dim.):
– 100-100
– 125-125
– 160-160
– 200-200
– 250-250
– 315-315

1-step (diffuser dim - duct dim.):
– 125-100
– 160-125
– 200-160
– 250-200
– 315-250


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


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

• The  diffuser is connected to the plenum inlet socket.

• Diffuser and box are supplied separately.

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

Commissioning
• The product is equipped with two cords for adjusting the damper blade angle and a hose for measuring of 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 connected to the measuring rod placed in the connection sockt in the box .

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

• The pressure is measured with the diffuser front mounted.

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