RFD | TROX SE

Technical information

Schematic illustration of the RFD-R-D, with plenum box for horizontal duct connection

① Diffuser face
② Central fixing screw
③ Plenum box
④ Cross bar
⑤ Suspension hole
⑥ Spigot

Optional
⑦ Lip seal
⑧ Pressure tap
⑨ Damper blade for volume flow rate balancing
⑩ Green cord for closing the damper blade
⑪ White cord for opening the damper blade
⑫ Measuring tube
⑬ Text label indicating plenum box variant

Functional description

Ceiling swirl diffusers allow the supply air from ventilation systems to flow into the room in a swirl pattern. The resulting airflow induces high levels of room air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air. Ceiling swirl diffusers allow for large volume flow rates. The result is a mixed flow ventilation in comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone.

Type RFD ceiling swirl diffusers have fixed blades. Air discharge is horizontal with an omni-directional flow. The supply air to room air temperature difference may range from –12 to +10 K.

A damper blade (optional) simplifies volume flow rate balancing for commissioning. Pressure tap and cord-operated damper blade (optional) allow for volume flow rate balancing with the diffuser face in place.

To give rooms an aesthetic, uniform look, Type RFD diffusers may also be used for extract air.

Nominal sizes	125, 160, 200, 250, 315, 400 mm
Minimum volume flow rate, with Δt_Z = –6 K	4 – 36 l/s or 14 – 130 m³/h
Maximum volume flow rate, with L_WA ≅ 50 dB(A)	22 – 330 l/s or 79 – 1188 m³/h
Supply air to room air temperature difference	–12 to +10 K

Downloads

product information

certificates

Environmental Product Declaration RFD

RFD_EPD_2024_03_DE_en Environmental Product Declarations 380 KB pdf

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