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RFD-SIRIUS

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RFD-SIRIUS

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.

  • Nominal sizes RFD: 160, 200, 250, 315 and 400
  • Nominal sizes SIRIUS: 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
  • 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

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 pressure measurement with integral measuring tubes


Special characteristics

  • RFD-SIRIUS combines the functions of a volume flow controller, sound attenuator, plenum box and air terminal device in one unit.
  • Low sound power level, ideal for comfort zones
  • For all types of ceiling systems, also suitable for freely suspended installation
  • Differential pressure measurement with integral measuring tubes

Nominal sizes

  • RFD: 160, 200, 250, 315 und 400
  • SIRIUS: 125, 160, 200 and 250

Variants

Diffuser face

  • RFD-R: Circular diffuser face
  • RFD-Q: Square diffuser face
  • RFD-*-D: Diffuser face with discharge nozzle


Control components

  • BC0
  • BL0
  • BM0
  • BM0-J6


For information on control components see Type Compact controllers.


Parts and characteristics

  • Circular or square diffuser face
  • Diffuser face with radially arranged fixed air control blades
  • Control component can be moved back and forth


Parts and characteristics

  • Circular or square diffuser face
  • Diffuser face with radially arranged fixed air control blades
  • Control component can be moved back and forth

Attachments

Variable volume flow control with electronic Compact controller to switch an external control signal and an actual value signal for integration into the central BMS.

  • Supply voltage 24 V AC/DC
  • The signal interface depends on the selected control component variant
  • Variable air or constant air volume flow control
  • The flow rate is measured according to the dynamic measurement principle
  • Volume flow rate control range: approx. 10 – 100 % of the nominal volume flow rate

Deviation from the operating range:

  • 10 – 20% of the nominal volume flow rate: +/- 25%
  • 20 – 40% of the nominal volume flow rate: +/- 10%
  • 40 – 100% of the nominal volume flow rate: +/- 4%

Electrical connection with cable or plug, depending on the selected control component variant.


Material and surfaces

  • Diffuser face and plenum box made of galvanised sheet steel
  • Measuring unit made of aluminium
  • 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


Technical data

  • RFD nominal sizes: 160, 200, 250, 315, 400 mm
  • SIRIUS nominal sizes: 125, 160, 200, 250 mm
  • Volume flow rate: 4.7 – 171.4 l/s or 17 – 617 m³ /h
  • Supply air to room air temperature difference: –12 to +10 K


Maintenance

  • Low maintenance as construction and materials are not subject to wear and tear
  • Inspection and cleaning according to VDI 6022

Technical information

Function, Technical data, Quick sizing, Specification text, Order code

  • FUNCTION
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE

Functional description

RFD-SIRIUS combines the functions of a volume flow controller, sound attenuator, plenum box and air terminal device in one unit. To determine the current actual volume flow rate, the differential pressure is measured using the integrated measuring tubes and transmitted to the controller. Depending on the desired setpoint value, the volume flow control unit is adjusted with an integrated linear actuator. The construction of the diffuser ensures that sound is effectively absorbed, which results in low sound power levels.

Variants

  • VARIANTS

Application

  • Für Zuluft in Komfortbereichen, wenn der Zuluftvolumenstrom geregelt werden soll
  • Variante mit Ausströmdüse bietet die Möglichkeit den Luftdurchlass freihängend zu montieren
  • Effizienter Drall mit hoher Induktion bewirkt schnellen Abbau der Temperaturdifferenz und der Luftgeschwindigkeit
  • Volumenstromregelung im geschlossenen Regelkreis mit Hilfsenergie
  • Differenzdruckmessung mit Hilfe integrierter Messrohre

Product details

  • PRODUCT DETAILS

Product details

Installation and commissioning

  • Preferably for clear room heights up to 4.0 m
  • Flush ceiling installation; variant RFD-*-D is suitable for suspended installation

Upstream conditions
The volume flow rate accuracy ΔV applies to a straight upstream section of the duct. Bends, junctions or a narrowing or widening of the duct cause turbulence that may affect measurement. Duct connections, e.g. branches off the main duct, must comply with EN 1505. Some installation situations require straight duct sections upstream.

Installation opening

NS

ØDA [mm]

Ød [mm]

without nozzlewith nozzle
RFD 160158175205
RFD 200198215245
RFD 250248265295
RFD 315313330380
RFD 400398415480

Downloads

product information

brochures

certificates

operation manuals

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Contact

Thank you for your message!

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +32(0)2 522 07 80 | E-mail: info@trox.be