RFD-Sirius

RFD-SIRIUS

RFD-SIRIUS, volume flow controller

RFD-SIRIUS, integral measuring tubes

Circular diffuser face

Horizontal swirling air discharge

RFD-Sirius, cross bar

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.

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
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

Application

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

Description

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

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.

Construction features

Spigot suitable for circular ducts to EN 1506 or EN 13180

Materials 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

Standards and guidelines

Sound power level of the air-regenerated noise measured according to EN ISO 5135
Hygiene conforms to VDI 6022

Maintenance

Maintenance-free as construction and materials are not subject to wear
Inspection and cleaning to VDI 6022

Technische informatie

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

Schematic illustration of the RFD, with Sirius

① RFD diffuser face
② SIRIUS plenum box
③ Lip seal
④ Spigot
⑤ Controller cage
⑥ Control component
⑦ Connecting cable

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.

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

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	V		Δp_t
Combination	l/s	m³/h	Pa
Combination	l/s	m³/h	50	100	200	300
RFD-160 SIRIUS 125	5	17	≤15	≤15	≤15	15
RFD-160 SIRIUS 125	14	52	25	27	29	30
RFD-160 SIRIUS 125	24	87	32	34	36	37
RFD-160 SIRIUS 125	34	123	36	38	40	42
RFD-200 SIRIUS 125	7	25	15	17	20	22
RFD-200 SIRIUS 125	22	80	25	28	31	33
RFD-200 SIRIUS 125	37	134	30	33	36	38
RFD-200 SIRIUS 125	53	189	33	36	39	41
RFD-200 SIRIUS 160	7	25	≤15	15	18	20
RFD-200 SIRIUS 160	25	90	25	29	32	33
RFD-200 SIRIUS 160	43	155	31	34	37	39
RFD-200 SIRIUS 160	61	219	–	38	41	43
RFD-250 SIRIUS 160	10	37	≤15	15	18	20
RFD-250 SIRIUS 160	34	121	23	26	29	31
RFD-250 SIRIUS 160	57	204	27	31	34	35
RFD-250 SIRIUS 160	80	288	31	34	37	39
RFD-250 SIRIUS 200	10	37	20	24	28	30
RFD-250 SIRIUS 200	39	141	28	32	36	38
RFD-250 SIRIUS 200	68	245	31	35	39	41
RFD-250 SIRIUS 200	97	349	–	37	41	43
RFD-315 SIRIUS 200	19	68	27	31	36	39
RFD-315 SIRIUS 200	50	180	29	34	39	42
RFD-315 SIRIUS 200	81	292	31	35	40	43
RFD-315 SIRIUS 200	112	404	32	36	41	44
RFD-315 SIRIUS 250	19	68	18	22	26	28
RFD-315 SIRIUS 250	52	187	26	30	34	36
RFD-315 SIRIUS 250	85	305	30	34	38	40
RFD-315 SIRIUS 250	118	424	32	36	40	42
RFD-400 SIRIUS 250	27	96	24	29	33	36
RFD-400 SIRIUS 250	73	263	29	33	38	40
RFD-400 SIRIUS 250	119	429	31	35	40	42
RFD-400 SIRIUS 250	166	596	32	36	41	44

Sound power level [dB (A)] – RFD-SIRIUS-D

Combination	V		Δp_t
Combination	l/s	m³/h	Pa
Combination	l/s	m³/h	50	100	200	300
RFD-D-160 SIRIUS 125	6	23	22	24	27	28
RFD-D-160 SIRIUS 125	20	72	29	31	34	35
RFD-D-160 SIRIUS 125	34	122	32	35	37	38
RFD-D-160 SIRIUS 125	48	171	34	37	39	40
RFD-D-200 SIRIUS 125	9	32	15	18	21	23
RFD-D-200 SIRIUS 125	27	97	23	27	30	32
RFD-D-200 SIRIUS 125	45	161	27	31	34	36
RFD-D-200 SIRIUS 125	63	226	30	33	36	38
RFD-D-200 SIRIUS 160	9	32	20	23	26	28
RFD-D-200 SIRIUS 160	34	121	28	31	34	36
RFD-D-200 SIRIUS 160	58	210	32	35	37	39
RFD-D-200 SIRIUS 160	83	299	34	37	40	41
RFD-D-250 SIRIUS 160	14	50	≤15	15	19	22
RFD-D-250 SIRIUS 160	37	134	19	24	28	31
RFD-D-250 SIRIUS 160	61	218	24	28	33	35
RFD-D-250 SIRIUS 160	84	303	27	31	36	38
RFD-D-250 SIRIUS 200	14	50	20	25	30	32
RFD-D-250 SIRIUS 200	47	170	27	32	37	40
RFD-D-250 SIRIUS 200	81	290	30	35	40	43
RFD-D-250 SIRIUS 200	114	410	32	37	42	45
RFD-D-315 SIRIUS 200	25	90	23	29	35	39
RFD-D-315 SIRIUS 200	59	214	26	32	38	42
RFD-D-315 SIRIUS 200	94	339	27	34	40	44
RFD-D-315 SIRIUS 200	129	463	28	35	41	45
RFD-D-315 SIRIUS 250	25	90	22	26	29	31
RFD-D-315 SIRIUS 250	68	245	28	31	35	37
RFD-D-315 SIRIUS 250	111	401	30	34	37	39
RFD-D-315 SIRIUS 250	154	556	32	36	39	41
RFD-D-400 SIRIUS 250	36	128	25	28	31	34
RFD-D-400 SIRIUS 250	81	291	29	32	34	38
RFD-D-400 SIRIUS 250	126	454	31	34	37	40
RFD-D-400 SIRIUS 250	171	617	32	36	38	41

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 is fixed with a central fixing screw to the cross bar (no tools required); the cross bar is inserted into the SIRIUS plenum box (no tools required) and held in place with magnets.

The SIRIUS plenum box is fitted with two spigots, one for connection to the ductwork and another one for connection of the diffuser face.

The SIRIUS plenum box contains two cylinders, one fitted inside the other; one of the cylinders is perforated.

The perforated cylinder is moved along a toothed bar upon control input from the volume flow controller, and the free area changes as a consequence.

A fleece covering the perforated cylinder acts as an equalising element.

This special construction feature allows for omitting any additional sound attenuator.

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

Materials 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

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.

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

Sizing data

V _______________________ [m³/h]
Δpt _______________________ [Pa]

Air-regenerated noise

LWA _______________________ [dB(A)]

                                                                              Type
                                                                                                                                                                  RFD-SIRIUS       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 size of diffuser face)
                                                                                                                                                                                                                                                              160
                                                                                                                                                                                                                                                              200
                                                                                                                                                                                                                                                              250
                                                                                                                                                                                                                                                              315
                                                                                                                                                                                                                                                              400

                                                                              Attachment (control component)
                                                                                                                                                                  BC0       Volume flow controller with MP bus interface and analogue interface 0 – 10 V / 2 – 10 V
                                                                                                                                                                  BL0       Volume flow controller with LonWorks FTT-10A interface
                                                                                                                                                                  BM0       Volume flow controller with Modbus RTU interface
                                                                                                                                                                  BM0-J6       Volume flow controller with Modbus RTU interface and RJ12 socket for connecting an X-AIRCONTROL zone module

                                                                              Signalling (can be selected only for BC0)
                                                                                                                                                                  E0       0 – 10 V DC (variable volume flow rate)
                                                                                                                                                                  F0       0 – 10 V DC (constant volume flow rate)
                                                                                                                                                                  E2       2 – 10 V DC (variable volume flow rate)
                                                                                                                                                                  F2       2 – 10 V DC (constant volume flow rate)

                                                                              Volume flow rate
                                                                                                                                                                  Variable:       V_min, V_max
                                                                                                                                                                  Constant:       V_const

                                                                              Exposed surface of diffuser face
                                                                                    No entry: powder-coated RAL 9010, pure white
                                                                                                                                                                  P1       Powder-coated, specify RAL CLASSIC colour

                                                                                                                                                                  Gloss level
                                                                                    RAL 9010 50 %
                                                                                    RAL 9006 30 %
                                                                                    All other RAL colours 70 %

Order example: RFD-SIRIUS-R-D-T/160-250/BC0/E0/60-180/P1-RAL 9016

Construction style	Circular
Construction	With discharge nozzle
Connection	Cross bar with magnets and quick fixing kit
∅ spigot for duct connection	160 mm
Nominal size of diffuser face	250 mm
Control component	Volume flow controller with MP bus interface and analogue interface 0 – 10 V / 2 – 10 V
Control input signal	0 – 10 V DC (variable volume flow rate)
Volume flow rate	60 – 180 m³/h
Exposed surface of diffuser face	Powder-coated RAL 9016, traffic white, gloss level 70%

Order example: RFD-SIRIUS-Q-T/160-250/BM0/100-160

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

Variants, Dimensions and weight

RFD-Q-D

RFD-SIRIUS-Q

RFD-SIRIUS-Q

Nominal size	ØDA	□Q₁	ØD₂	B	L₁	H	H₂	A_eff	m	SIRIUS weight	RFD weight
Nominal size	mm							m²	kg
RFD 160 SIRIUS 125	158	198	123	325	386	175	60	0.0037	9.2	8.5	0.7
RFD 200 SIRIUS 125	198	248	123	325	386	175	60	0.0066	9.0	8.0	1.0
RFD 200 SIRIUS 160	198	248	158	360	402	210	60	0.0066	10.5	9.5	1.0
RFD 250 SIRIUS 160	248	298	158	360	402	210	60	0.0110	10.5	9.0	1.5
RFD 250 SIRIUS 200	248	298	198	400	435	240	60	0.0110	12.5	11.0	1.5
RFD 315 SIRIUS 200	313	398	198	400	435	240	60	0.0205	12.9	10.5	2.4
RFD 315 SIRIUS 250	313	398	248	450	392	290	60	0.0205	14.9	12.5	2.4
RFD 400 SIRIUS 250	398	498	248	450	392	290	60	0.0280	15.6	12.0	3.6

□Q₁ is available as an option for all ØDA units in sizes 593, 598, 618 and 623

RFD-SIRIUS-Q-D

Nominal size	ØDA	□Q₁	ØD₂	B	L₁	H	H₂	A_eff	m	SIRIUS weight	RFD weight
Nominal size	mm								kg
RFD 160 SIRIUS 125	158	248	123	325	386	175	80	0.0060	9.4	8.5	0.9
RFD 200 SIRIUS 125	198	248	123	325	386	175	80	0.0092	9.2	8.0	1.2
RFD 200 SIRIUS 160	198	248	158	360	402	210	80	0.0092	10.7	9.5	1.2
RFD 250 SIRIUS 160	248	298	158	360	402	210	80	0.0150	10.7	9.0	1.7
RFD 250 SIRIUS 200	248	298	198	400	435	240	80	0.0150	12.7	11.0	1.7
RFD 315 SIRIUS 200	313	398	198	400	435	240	90	0.0265	13.4	10.5	2.9
RFD 315 SIRIUS 250	313	398	248	450	392	290	90	0.0265	15.4	12.5	2.9
RFD 400 SIRIUS 250	398	498	248	450	392	290	90	0.0355	16.3	12.0	4.3

□Q₁ is available as an option for all ØDA units in sizes 593, 598, 618 and 623

RFD-SIRIUS-R

Nominal size	ØDA	ØD₁	ØD₂	B	L₁	H	H₂	A_eff	m	SIRIUS weight	RFD weight
Nominal size	mm							m²	kg
RFD 160 SIRIUS 125	158	197	123	325	386	175	55	0.0037	9.1	8.5	0.6
RFD 200 SIRIUS 125	198	241	123	325	386	175	55	0.0066	8.9	8.0	0.9
RFD 200 SIRIUS 160	198	241	158	360	402	210	55	0.0066	10.4	9.5	0.9
RFD 250 SIRIUS 160	248	295	158	360	402	210	55	0.0110	10.3	9.0	1.3
RFD 250 SIRIUS 200	248	295	198	400	435	240	55	0.0110	12.3	11.0	1.3
RFD 315 SIRIUS 200	313	364	198	400	435	240	55	0.0205	12.4	10.5	1.9
RFD 315 SIRIUS 250	313	364	248	450	392	290	55	0.0205	14.4	12.5	1.9
RFD 400 SIRIUS 250	398	450	248	450	392	290	55	0.0280	14.9	12.0	2.9

RFD-SIRIUS-R-D

Nominal size	ØDA	ØD₁	ØD₂	B	L₁	H	H₂	A_eff	m	SIRIUS weight	RFD weight
Nominal size	mm								kg
RFD 160 SIRIUS 125	158	250	123	325	386	175	80	0.0060	9.5	8.5	1.0
RFD 200 SIRIUS 125	198	300	123	325	386	175	80	0.0092	9.3	8.0	1.3
RFD 200 SIRIUS 160	198	300	158	360	402	210	80	0.0092	10.8	9.5	1.3
RFD 250 SIRIUS 160	248	350	158	360	402	210	80	0.0150	10.8	9.0	1.8
RFD 250 SIRIUS 200	248	350	198	400	435	240	80	0.0150	12.8	11.0	1.8
RFD 315 SIRIUS 200	313	450	198	400	435	240	80	0.0265	13.3	10.5	2.8
RFD 315 SIRIUS 250	313	450	248	450	392	290	80	0.0265	15.3	12.5	2.8
RFD 400 SIRIUS 250	398	580	248	450	392	290	80	0.0355	16.1	12.0	4.1

Installation examples, Installation details, Basic information and nomenclature

Installation in continuous ceilings

Bend

A bend with a centre line curvature radius of at least 1D – without an additional straight duct section upstream of the VAV terminal unit – has only a negligible effect on the volume flow rate accuracy.

Installation and commissioning

Preferably for rooms with a clear height 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

Nominal size	ØD_A	Ød
Nominal size		Without nozzle	With nozzle
Nominal size	mm
RFD 160	158	175	205
RFD 200	198	215	245
RFD 250	248	265	295
RFD 315	313	330	380
RFD 400	398	415	480

Principal dimensions

ØD [mm]

Outer diameter of the spigot

ØD₁ [mm]

Outer diameter of a circular diffuser face

ØD₂ [mm]

Diameter of a circular diffuser face style

ØD₃ [mm]

Diameter of a circular plenum box

□Q₁ [mm]

Outer diameter of a square diffuser face

□Q₂ [mm]

Dimensions of a square diffuser face style

□Q₃ [mm]

Dimensions of a square plenum box

H₁ [mm]

Distance (height) from the lower edge of the suspended ceiling to the lower edge of the diffuser face

H₂ [mm]

Height of a ceiling diffuser, from the lower edge of the suspended ceiling to the upper edge of the spigot

H₃ [mm]

Height of a ceiling diffuser with plenum box, from the lower edge of the suspended ceiling to the upper edge of the plenum box or of the spigot

A [mm]

Position of the spigot, defined by the distance of the spigot centre line to the lower edge of the suspended ceiling

C [mm]

Length of the spigot

m [kg]

Weight

Nomenclature

LWA [dB(A)]

A-weighted sound power level of air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

Δtz [K]

Supply air to room air temperature difference, i.e. supply air temperature minus room temperature

Δpt [Pa]

Total differential pressure

Aeff [m²]

Effective air discharge area

All sound power levels are based on 1 pW.

Downloads

Productinformatie

Type RFD-Sirius

Product Data Sheet 1,9 MB pdf

Handleidingen

Installation Manual - Air terminal devices

1,1 MB pdf

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RFD-Sirius

RFD-SIRIUS IS AN AIR TERMINAL DEVICE COMBINED WITH A VAV TERMINAL UNIT

Application

Description

Technische informatie

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

Variants, Dimensions and weight

Installation examples, Installation details, Basic information and nomenclature

Downloads

Productinformatie

Type RFD-Sirius

Handleidingen

Installation Manual - Air terminal devices

TROX SERVICES

TECHNISCH NOODZAKELIJK

STATISTIEKEN EN WEBSITE-ANALYSE

GEMAK EN PERSONALISATIE

VOOR DE BESTE TROX-ERVARING