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VWR-FCSA (RAL9016) • Square swirl diffusers with fixed curved blades

Swirl diffusers
Square
Steel
White, RAL 9016
Fixed curved blades

Accessories

REV-B • Square plenum boxes REV-B ISO • Square insulated plenum boxes RER-B • Circular plenum box RER-B ISO • Insulated circular plenumbox CRC • Circular regulating valves for plenum boxes PPS-P • Polystyrene plenum box PPS-APD • Duct connections for insulated PPS plenum box & plate

Datasheet

Swirl ceiling diffusers with high induction rate, consisting of a square plate with multiple fixed curved blades arranged in a circular pattern, to be equipped with galvanized steel plenum box

Brand

Cairox

Application

For air supply and exhaust in ventilation and air conditioning systems

Material

Steel

Colour

Standard colour white, RAL 9016
Other colours available upon request

Composition

Front plate made of powder coated steel
Central screw mounting

Mounting

Fixing by central screw in the crossbar of the plenum box.

Accessories

Circular plenum box, type RER-B
Square plenum box, type REV-B
Insulated circular plenum box, type RER-B ISO
Insulated square plenum box, type REV-B ISO
Regulating valve for plenum box, type CRC
Polystyrene plenum box, type PPS-P with duct connection PPS-APD and mounting bar PPS-MB

Text for tender

The air supply ceiling diffusers are square with a circular arranged swirl with fixed curved blades. They are made of a steel powdercoated frontplate in white finish RAL 9016. The diffusers are standard delivered with galvanized steel plenumbox equipped with perforated plate and damper in the side entry spigot. The diffuser is centrally screw mounted.
Cairox type VWR-FCSA + RER-A

Order example

VWR-FCSA, 600 + RER-B 600 + CRC 250

Explanation

VWR-FCSA = Diffuser type

600 = Diffuser size/swirl size

Accessories

RER-B = Plenum box type

600 = Size plenum box

CRC = Plenum box connection valve
250 = Plenum box connection diameter 250

Dimensions

	D [mm]	D1 [mm]	D2 [mm]	D3 [mm]	A	#Blades
VWR-FCSA 300	238	86	236	296	41	16
VWR-FCSA 400	338	140	336	396	41	22
VWR-FCSA 500	438	170	436	496	41	24
VWR-FSCA 600	538	170	536	596	22	24
VWR-FSCA 625*	538	170	536	621	22	24
* niet meer verkrijgbaar / n'est plus disponible / no longer available

Quick selection

VWR-FCSA				300			400			500			600			625*
Q	Ak			0.023			0.03			0.0465			0.07			0.07
	B			1.2	2.4	3.6	1.2	2.4	3.6	1.2	2.4	3.6	1.2	2.4	3.6	1.2	2.4	3.6
100		H=	2.7	0.17	0.13	0.11
	Vz	H=	3.2	0.14	0.11	0.09
		H=	3.8	0.11	0.09	0.08
	Vk			1.2
	X0,25			0.9
	Ps			7
	Lw(A)			<20
150		H=	2.7	0.26	0.2	0.16	0.23	0.18	0.15
	Vz	H=	3.2	0.2	0.17	0.14	0.18	0.15	0.13
		H=	3.8	0.17	0.14	0.12	0.15	0.13	0.12
	Vk			1.8			1.4
	X0,25			1.6			1.3
	Ps			17			5
	Lw(A)			26			<20
200		H=	2.7	0.34	0.26	0.21	0.29	0.23	0.2	0.21	0.17	0.14
	Vz	H=	3.2	0.27	0.22	0.19	0.24	0.2	0.17	0.17	0.15	0.13
		H=	3.8	0.22	0.19	0.16	0.2	0.17	0.15	0.15	0.13	0.12
	Vk			2.4			1.9			1.2
	X0,25			2.2			1.9			1.1
	Ps			30			8			2
	Lw(A)			34			<20			<20
250		H=	2.7	0.43	0.33	0.27	0.36	0.29	0.24	0.25	0.2	0.17
	Vz	H=	3.2	0.34	0.28	0.23	0.3	0.25	0.21	0.21	0.18	0.16
		H=	3.8	0.28	0.23	0.2	0.25	0.21	0.19	0.18	0.16	0.14
	Vk			3			2.3			1.5
	X0,25			2.9			2.5			1.5
	Ps			47			13			3
	Lw(A)			41			24			<20
300		H=	2.7	0.51	0.39	0.32	0.43	0.34	0.28	0.29	0.24	0.2	0.22	0.17	0.15	0.22	0.17	0.15
	Vz	H=	3.2	0.41	0.33	0.28	0.35	0.29	0.25	0.25	0.21	0.18	0.18	0.15	0.13	0.18	0.15	0.13
		H=	3.8	0.33	0.28	0.24	0.29	0.25	0.22	0.21	0.18	0.17	0.15	0.13	0.12	0.15	0.13	0.12
	Vk			3.6			2.8			1.8			1.2			1.2
	X0,25			3.7			3.2			1.9			1.2			1.2
	Ps			67			19			5			2			2
	Lw(A)			47			30			<20			<20			<20
400		H=	2.7				0.56	0.44	0.37	0.38	0.31	0.26	0.29	0.24	0.2	0.29	0.24	0.2
	Vz	H=	3.2				0.46	0.38	0.33	0.32	0.27	0.24	0.24	0.2	0.18	0.24	0.2	0.18
		H=	3.8				0.38	0.33	0.29	0.27	0.24	0.21	0.2	0.18	0.16	0.2	0.18	0.16
	Vk						3.7			2.4			1.6			1.6
	X0,25						4.7			2.9			1.9			1.9
	Ps						33			9			4			4
	Lw(A)						39			21			<20			<20
500		H=	2.7				0.69	0.54	0.46	0.46	0.38	0.32	0.37	0.3	0.25	0.37	0.3	0.25
	Vz	H=	3.2				0.56	0.47	0.41	0.39	0.33	0.29	0.31	0.26	0.22	0.31	0.26	0.22
		H=	3.8				0.47	0.41	0.36	0.33	0.29	0.26	0.26	0.22	0.2	0.26	0.22	0.2
	Vk						4.6			3			2			2
	X0,25						6.4			4			2.7			2.7
	Ps						51			14			6			6
	Lw(A)						45			28			<20			<20
600		H=	2.7							0.54	0.44	0.38	0.45	0.36	0.3	0.45	0.36	0.3
	Vz	H=	3.2							0.45	0.39	0.34	0.37	0.31	0.27	0.37	0.31	0.27
		H=	3.8							0.39	0.34	0.31	0.31	0.27	0.24	0.31	0.27	0.24
	Vk									3.6			2.4			2.4
	X0,25									5.2			3.6			3.6
	Ps									20			9			9
	Lw(A)									34			23			23
800		H=	2.7							0.7	0.57	0.49	0.61	0.48	0.41	0.61	0.48	0.41
	Vz	H=	3.2							0.59	0.5	0.44	0.5	0.42	0.36	0.5	0.42	0.36
		H=	3.8							0.5	0.44	0.39	0.42	0.36	0.33	0.42	0.36	0.33
	Vk									4.8			3.2			3.2
	X0,25									7.9			5.6			5.6
	Ps									35			15			15
	Lw(A)									43			32			32
1000		H=	2.7										0.76	0.61	0.52	0.76	0.61	0.52
	Vz	H=	3.2										0.63	0.53	0.46	0.63	0.53	0.46
		H=	3.8										0.53	0.46	0.41	0.53	0.46	0.41
	Vk												4			4
	X0,25												8			8
	Ps												24			24
	Lw(A)												39			39

Symbols and specifications

Q = Air Volume in m³/h
Ak = Effective surface (free area) in m²
B = Distance between diffusers in m
H = Installation height of the diffusers in m
Vz = Maximum velocity at the occupied zone regarding distance between diffusers and installation height in m/s
Vk = Average effective velocity through the grill in m/s
X0.25 = Throw length in m at an endvelocity Vt of 0,25m/s
Ps = Static pressure loss given in Pa
Lw(A) = Acoustic power in dB(A)

The throw X0.25 is given at an end velocity of 0.25m/s for a smooth ceiling without any obstacles.
The values are given for isothermal supply air. Throw distances for cooling conditions at -11K can be calculated by deviding the X0.25 values with factor 1.1. For heating purposes at Dt of +11K a multiplier of 1.1 should be applied to the given X0.25 value.
In order to achieve a high comfort level, selections can be made according to the maximal velocity at the occupied zone Vz. These values are given at distances between diffusers B and installation heights H. Velocities Vz lower than, or equal to 0,25m/s at the occupied zone are advised.
The pressure losses Ps are given for grilles without damper of with fully opened damper.
The acoustic power Lw(A) are given for grilles without damper of with fully opened damper without room attenuation. Acoustic powers below 20dB(A) are mentioned as "<20" in the tables.
For all special requirements, please contact our engineering office.

Placement instruction

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	Introduction

A	Products for air diffusion

	A00	Basic principles for air diffusion

	A01	Wall and floor grilles

	A02	Grilles for galva ducts

	A03	Door and transfer grilles

	A04	Ceiling diffusers and grilles

	A05	Filter and return air grilles

	A06	Air valves

	A07	External louvres

	A08	Backdraught shutters

	A09	Roof caps

	A10	Grilles for domestic ventilation

	A11	Perforated induction ducts

	A12	Air displacement units

B	Valves & volume control dampers

C	Air duct systems

D	Air duct components and accessories

E	Fireproof products

F	Insulating products

G	Air filters

I	Fans & ventilation systems

J	Air handling, air conditioning and heatpumps


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