Ceiling swirl diffusers Type RFD-SIRIUS RFD-Sirius, cross bar Horizontal swirling air discharge Circular diffuser face RFD-SIRIUS is an air terminal device combined with a VAV terminal unit RFD-SIRIUS is used in ventilation and air conditioning systems for the demand- based volume flow control and as an air terminal device. ■■ RFD nominal sizes: 160, 200, 250, 315 and 400 ■■ SIRIUS nominal sizes: 125, 160, 200 and 250 ■■ Volume flow rate range: 4.7 to 171.3 l/s or 17 to 617 m³/h ■■ For supply air ■■ Flush ceiling installation, with discharge nozzle also suspended installation RFD-SIRIUS, integral measuring tubes ■■ Control input signal via MP bus, LonWorks FTT-10A, Modbus RTU, or analogue signal ■■ Integral noise insulation element ■■ High induction results in a rapid reduction of the temperature difference and airflow velocity ■■ Ideal for comfort zones Optional equipment and accessories ■■ Exposed diffuser face available in RAL CLASSIC colours RFD-SIRIUS,

Ceiling swirl diffusers General information Type RFD-SIRIUS Technical data Quick sizing Specification text Order code Installation examples Installation details Basic information and nomenclature General information Application – For supplying air to comfort zones in cases where the supply air flow rate is to be controlled – The variant with discharge nozzle allows for suspended installation – The efficient swirl creates high induction levels, thereby rapidly reducing the temperature difference and airflow velocity – Closed-loop volume flow control using an external power supply – Differential...

Ceiling swirl diffusers General information – 20 – 40% of the nominal volume flow rate: +/ - 10% – 40 – 100% of the nominal volume flow rate: +/ - 4% – Exposed parts of the diffuser face powder- coated RAL 9010, pure white – P1: Powder-coated, RAL CLASSIC colour – Noise insulating fleece on the controller cage Electrical connection with cable or plug, depending on the selected control component variant. Standards and guidelines – Sound power level of the air-regenerated noise measured according to EN ISO 5135 – Hygiene conforms to VDI 6022 Construction features – Spigot suitable for circular...

Ceiling swirl diffusers Functional description RFD-SIRIUS combines the functions of a volume flow controller, sound attenuator, plenum box and air terminal device in one unit. The differential pressure is measured with integral measuring tubes and transmitted to the controller. An integral linear actuator adjusts the damper blade such that the required setpoint value is achieved. The construction of the diffuser ensures that sound is effectively absorbed, which results in low sound power levels. Schematic illustration of the RFD, with Sirius ① RFD diffuser face ② SIRIUS plenum box ③ Lip seal...

Ceiling swirl diffusers Technical data RFD nominal sizes SIRIUS nominal sizes Volume flow rate Supply air to room air temperature difference

Ceiling swirl diffusers Quick sizing Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures. The minimum volume flow rates apply to a supply air to room air temperature difference of –6 K. The maximum volume flow rates apply to a sound power level of approx. 50 dB (A). Sound power level [dB (A)] – RFD-SIRIUS Combination

Ceiling swirl diffusers Quick sizing Sound power level [dB (A)] – RFD-SIRIUS-D Combination

Ceiling swirl diffusers Specification text This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme. RFD-SIRIUS is an air terminal device combined with a VAV terminal unit. The ceiling diffuser with a square or circular diffuser face is preferably used as a supply air diffuser for comfort zones. The fixed air control blades allow for horizontal swirling supply air discharge creating high induction levels. The diffuser is suitable for installation into all types of suspended ceilings. The diffuser...

Ceiling swirl diffusers Order code Ceiling diffuser  Construction style R Circular Q Square  Construction No entry: without discharge nozzle D With discharge nozzle  Connection T Cross bar with magnets and quick fixing kit  Nominal size [mm] ∅ spigot for duct connection 125 For diffuser faces 160 and 200 160 For diffuser faces 200 and 250 200 For diffuser faces 250 and 315 250 For diffuser faces 315 and 400 ∅ spigot for diffuser face connection (nominal ize s of diffuser face) 160 200 250 315 400  Attachment (control component) BC0 Volume flow controller with MP bus interface and analogue...

Ceiling swirl diffusers Order code Order example: RFD-SIRIUS-Q-T/160-250/BM0/100-160 Construction style Construction Connection ∅ spigot for duct connection Nominal size of diffuser face Control component Control input signal Volume flow rate Exposed surface of diffuser face Square Without discharge nozzle Cross bar with magnets and quick fixing kit 160 mm 250 mm Volume flow controller with Modbus RTU interface Modbus RTU 100 – 160 m³/h Powder-coated RAL 9010, pure white, gloss level 25%

Ceiling swirl diffusers Variants Diffuser faces RFD-SIRIUS RFD-R-D Product examples Plenum boxes

Ceiling swirl diffusers Nominal size RFD 160 SIRIUS 125 RFD 200 SIRIUS 125 RFD 200 SIRIUS 160 RFD 250 SIRIUS 160 RFD 250 SIRIUS 200 RFD 315 SIRIUS 200 RFD 315 SIRIUS 250 RFD 400 SIRIUS 250 SIRIUS weight RFD weight kg □Q1 is available as an option for all ØDA units in sizes 593, 598, 618 and 623

Ceiling swirl diffusers Dimensions and weight RFD-SIRIUS-Q-D Nominal size RFD 160 SIRIUS 125 RFD 200 SIRIUS 125 RFD 200 SIRIUS 160 RFD 250 SIRIUS 160 RFD 250 SIRIUS 200 RFD 315 SIRIUS 200 RFD 315 SIRIUS 250 RFD 400 SIRIUS 250 SIRIUS weight RFD weight kg □Q1 is available as an option for all ØDA units in sizes 593, 598, 618 and 623 RFD-SIRIUS-Q and RFD-SIRIUS-Q-D (RFD- SIRIUS-Q-D shown)