QLV-360

QLV-360-O-M-L

QLV-360

Polygon casing, 360° air discharge, for comfort and industrial zones

Polygon displacement flow diffusers with omni directional air discharge

Spigot diameter 160 – 630 mm, nominal height 500 – 1750 mm
Volume flow rate range 32 – 1157 l/s or 116 – 4166 m³/h
Circular duct connection
Duct connection at the top or bottom
Integral airflow straightener and conical equalising element

Optional equipment and accessories

Floor mounting plate
Damper blade for volume flow rate balancing
Exposed surface in RAL CLASSIC colours

Initialize order code

Application

Application

Type QLV-360 displacement flow diffusers are used as supply air units for industrial and comfort zones
Attractive design element for building owners and architects with demanding aesthetic requirements
For free-standing installation
Low-velocity airflow, causing only low levels of induction and resulting in low-turbulence displacement ventilation.
Excellent air quality in the occupied zone
Draught-free and economical ventilation and air conditioning also of larger internal spaces such as shop floors or auditoriums, with several displacement flow diffusers in a regular arrangement
For variable and constant volume flows
For supply air to room air temperature differences from –6 to –1 K

Special characteristics

Eight-way air discharge
Duct connection at the top or bottom
Optional damper blade for volume flow rate balancing

Nominal sizes

∅D: 160, 200, 250, 315, 400, 500, 630 mm
H: 500, 600, 800, 1000, 1250, 1500, 1750 mm

Description

Variants

QLV-...-O: Spigot at the top
QLV-...-U: Spigot at the bottom

Parts and characteristics

Polygon casing
Equalising element and airflow straightener that ensure a uniform supply air discharge
Lip seal, optional for QLV-360-O

Attachments

Damper blade for volume flow rate balancing

Accessories

Lip seal
Floor mounting plate

Construction features

Spigot suitable for circular ducts to EN 1506 or EN 13180

Materials and surfaces

Top cover, base and side parts made of galvanised sheet steel
S7: Top cover and base made of aluminium
Corner and edge trims are extruded aluminium sections
Airflow straightener made of plastic
Equalising element made of synthetic fibres
Lip seal made of rubber
Surface powder-coated RAL 9010, pure white
P1: Powder-coated, RAL CLASSIC colour
S7: Surface galvanised

Standards and guidelines

Sound power level of the air-regenerated noise measured according to EN ISO 5135

Maintenance

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

Technical information

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

Schematic illustration of QLV-360 with circular spigot at the top

① Diffuser face
② Airflow straightener
③ Casing
④ Equalising element
⑤ Edge trim
⑥ Spigot
Optional
⑦ Damper blade for volume flow rate balancing
⑧ Lip seal

Functional description

Displacement flow diffusers discharge the air from air conditioning systems with a low velocity and near the floor. The low-turbulence airflow creates a pool of fresh air that covers the entire floor area. The convection from people and other heat sources causes the fresh air from the pool to rise and create comfortable conditions in the occupied zone.

This draught-free and economical type of ventilation is also suitable for large internal spaces, such as auditoriums or shop floors, with several regularly arranged units.

Displacement ventilation is characterised by low airflow velocities and low turbulence. The air quality in the occupied zone is very high.

Displacement ventilation with air discharge near the floor is suitable only for cooling. The maximum supply air to room air temperature difference is –6 K.

Type QLV-360 displacement flow diffusers are fitted with an equalising element and an air straightener which distribute the supply air flow equally across the entire diffuser area. The perforated sheet metal diffuser face helps to equalise the airflow further. Eight-way (360°) air discharge.

With displacement ventilation, i.e. air discharge near the floor, extract air units should be installed in the upper part of a room, above the occupied zone.

Nominal sizes	160 × 500 to 630 × 1750 mm
Minimum volume flow rate, at 0.1 m/s	32 –386 l/s or 116 – 1389 m³/h
Maximum volume flow rate, at 0.3 m/s	97 – 1157 l/s or 348 – 4166 m³/h
Supply air to room air temperature difference	–6 to –1 K
Sound power level, at 0.3 m/s	50 dB(A) max.

Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures.

QLV-360, sound power level, total differential pressure and near zone

Nominal size	V		v₀	Damper blade position						L_nz
Nominal size	V		v₀	0°		45°		90°		L_nz
Nominal size	V		v₀	Δp_t	L_WA	Δp_t	L_WA	Δp_t	L_WA	L_nz
Nominal size	l/s	m³/h	m/s	Pa	dB(A)	Pa	dB(A)	Pa	dB(A)	m
160 × 500	32	116	0.10	6	<15	9	<15	17	17	<
160 × 500	48	174	0.15	12	<15	20	20	38	28	<
160 × 500	64	232	0.20	22	21	35	28	68	36	<
160 × 500	97	348	0.30	50	32	79	40	152	48	<
200 × 500	39	140	0.10	4	<15	6	<15	10	<15	<
200 × 500	59	211	0.15	8	<15	12	15	24	24	<
200 × 500	78	281	0.20	14	<15	22	23	42	32	<
200 × 500	117	421	0.30	32	26	50	34	94	43	<
250 × 500	47	169	0.10	<3	<15	3	<15	6	<15	<
250 × 500	71	254	0.15	5	<15	8	<15	15	19	<
250 × 500	94	338	0.20	9	<15	14	17	26	27	<
250 × 500	141	508	0.30	20	20	31	29	58	38	<
160 × 600	39	139	0.10	7	<15	12	<15	24	21	<
160 × 600	58	209	0.15	16	17	28	25	53	33	<
160 × 600	77	278	0.20	29	25	49	33	94	41	<
160 × 600	116	417	0.30	65	37	111	45	212	52	<
200 × 600	47	168	0.10	5	<15	8	<15	15	17	<
200 × 600	70	253	0.15	10	<15	17	20	33	28	<
200 × 600	94	337	0.20	18	19	31	28	58	36	<
200 × 600	140	505	0.30	41	31	69	39	131	48	<
250 × 600	56	203	0.10	3	<15	5	<15	9	<15	<
250 × 600	85	305	0.15	6	<15	11	<15	20	23	<
250 × 600	113	406	0.20	11	<15	19	22	36	31	<
250 × 600	169	609	0.30	26	25	43	34	80	43	<
315 × 600	70	251	0.10	<3	<15	3	<15	6	<15	<
315 × 600	104	376	0.15	4	<15	7	<15	13	19	<
315 × 600	139	501	0.20	7	<15	12	17	22	27	<
315 × 600	209	752	0.30	17	19	28	28	50	38	<
160 × 800	52	185	0.10	12	<15	21	22	40	29	<
160 × 800	77	278	0.15	26	25	48	33	91	40	<
160 × 800	103	371	0.20	46	33	85	41	162	49	<
160 × 800	155	556	0.30	104	44	190	52	364	60	<
200 × 800	62	225	0.10	7	<15	13	16	25	24	<
200 × 800	94	337	0.15	16	19	29	28	56	36	<
200 × 800	125	449	0.20	29	27	52	36	99	44	<
200 × 800	187	674	0.30	64	39	117	47	223	55	<
250 × 800	75	271	0.10	4	<15	8	<15	15	20	<
250 × 800	113	406	0.15	10	<15	18	22	34	31	<
250 × 800	150	541	0.20	18	21	32	30	60	39	<
250 × 800	226	812	0.30	40	33	72	41	136	50	<
315 × 800	93	334	0.10	3	<15	5	<15	9	15	<
315 × 800	139	501	0.15	6	<15	11	17	21	26	<
315 × 800	186	668	0.20	11	15	20	25	38	35	<
315 × 800	278	1002	0.30	26	27	46	36	84	46	<
400 × 800	115	415	0.10	<3	<15	3	<15	6	<15	<
400 × 800	173	622	0.15	4	<15	7	<15	13	22	<
400 × 800	230	829	0.20	7	<15	13	19	23	30	<
400 × 800	346	1244	0.30	16	21	29	31	52	41	<
160 × 1000	64	232	0.10	17	19	32	28	62	35	0.8
160 × 1000	97	348	0.15	37	30	73	39	138	46	1.0
160 × 1000	129	464	0.20	66	39	129	47	246	54	<
160 × 1000	193	696	0.30	149	50	291	58	554	66	<
200 × 1000	78	281	0.10	10	<15	20	22	37	30	0.8
200 × 1000	117	421	0.15	23	25	45	34	84	41	1.0
200 × 1000	156	562	0.20	40	33	79	42	150	49	<
200 × 1000	234	842	0.30	91	44	178	53	337	61	<
250 × 1000	94	338	0.10	6	<15	12	17	23	25	0.8
250 × 1000	141	508	0.15	14	19	27	28	51	37	1.0
250 × 1000	188	677	0.20	25	27	48	36	91	45	<
250 × 1000	282	1015	0.30	56	38	109	47	204	56	<
315 × 1000	116	418	0.10	4	<15	8	<15	14	21	0.8
315 × 1000	174	626	0.15	9	<15	17	23	32	32	1.0
315 × 1000	232	835	0.20	16	21	30	31	56	40	<
315 × 1000	348	1253	0.30	35	33	68	42	126	52	<
400 × 1000	144	518	0.10	<3	<15	5	<15	9	16	0.8
400 × 1000	216	778	0.15	6	<15	11	17	19	27	1.0
400 × 1000	288	1037	0.20	10	15	19	25	34	36	<
400 × 1000	432	1555	0.30	22	27	42	37	77	47	<
500 × 1000	177	638	0.10	<3	<15	3	<15	6	<15	0.8
500 × 1000	266	957	0.15	4	<15	7	<15	12	23	1.0
500 × 1000	354	1276	0.20	6	<15	12	20	22	31	<
500 × 1000	532	1914	0.30	15	22	28	32	50	43	<
315 × 1250	145	522	0.10	6	<15	11	17	21	26	1.1
315 × 1250	218	783	0.15	12	19	26	29	48	38	1.4
315 × 1250	290	1044	0.20	22	27	46	37	85	46	1.6
315 × 1250	435	1566	0.30	50	39	103	48	190	57	2.0
400 × 1250	180	648	0.10	3	<15	7	<15	13	22	1.1
400 × 1250	270	972	0.15	8	<15	16	23	29	33	1.4
400 × 1250	360	1296	0.20	14	21	28	31	51	41	1.7
400 × 1250	540	1944	0.30	31	33	63	43	116	53	2.1
500 × 1250	222	797	0.10	<3	<15	5	<15	8	18	1.1
500 × 1250	332	1196	0.15	5	<15	10	18	18	29	1.4
500 × 1250	443	1595	0.20	9	16	18	26	33	37	1.7
500 × 1250	665	2392	0.30	20	27	41	38	74	48	2.1
630 × 1250	276	992	0.10	<3	<15	3	<15	5	<15	1.0
630 × 1250	413	1488	0.15	3	<15	7	<15	12	25	1.4
630 × 1250	551	1984	0.20	6	<15	12	21	21	33	1.6
630 × 1250	827	2975	0.30	13	22	27	33	47	44	2.1
400 × 1500	216	778	0.10	5	<15	10	17	18	27	1.5
400 × 1500	324	1166	0.15	10	18	22	28	40	38	1.9
400 × 1500	432	1555	0.20	18	26	39	36	72	46	2.2
400 × 1500	648	2333	0.30	41	37	88	47	162	57	2.8
500 × 1500	266	957	0.10	3	<15	6	<15	11	22	1.5
500 × 1500	399	1435	0.15	7	<15	14	23	26	34	1.9
500 × 1500	532	1914	0.20	12	21	25	31	46	42	2.3
500 × 1500	797	2871	0.30	26	32	57	43	103	53	2.9
630 × 1500	331	1190	0.10	<3	<15	4	<15	7	18	1.4
630 × 1500	496	1785	0.15	4	<15	9	18	16	29	1.8
630 × 1500	661	2380	0.20	8	15	16	26	29	38	2.3
630 × 1500	992	3570	0.30	17	27	36	37	65	49	3.0
630 × 1750	386	1389	0.10	<3	<15	5	<15	10	22	1.8
630 × 1750	579	2083	0.15	5	<15	12	22	21	34	2.5
630 × 1750	771	2777	0.20	10	19	21	30	38	42	3.2
630 × 1750	1157	4166	0.30	21	31	48	42	86	53	4.4

<: 0.2 m/s are not achieved

The near zone values are based on a supply air to room air temperature difference of –3 K

Displacement flow diffusers for air discharge near the floor, suitable for comfort and industrial zones with special demands on architecture and design.

With eight-way (360°) air discharge for low-turbulence displacement ventilation. Polygon casing for free-standing installation.

Ready-to-install component which consists of a casing with spigot at the top or bottom, an equalising element and airflow straightener that ensure uniform supply air discharge, and a perforated sheet metal diffuser face.

Spigot suitable for ducts to EN 1506 or EN 13180.

Sound power level of the air-regenerated noise measured according to EN ISO 5135.

Special characteristics

Eight-way air discharge
Duct connection at the top or bottom
Optional damper blade for volume flow rate balancing

Materials and surfaces

Top cover, base and side parts made of galvanised sheet steel
S7: Top cover and base made of aluminium
Corner and edge trims are extruded aluminium sections
Airflow straightener made of plastic
Equalising element made of synthetic fibres
Lip seal made of rubber
Surface powder-coated RAL 9010, pure white
P1: Powder-coated, RAL CLASSIC colour
S7: Surface galvanised

Technical data

Nominal sizes: 160 × 500 to 630 × 1750 mm
Minimum volume flow rate, at 0.1 m/s: 32 – 386 l/s or 116 – 1389 m³/h
Maximum volume flow rate, at 0.3 m/s: 97 – 1157 l/s or 348 – 4166 m³/h
Supply air to room air temperature difference: –6 to –1 K
Sound power level, at 0.3 m/s: 50 dB(A) max.

Sizing data

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

Air-regenerated noise

L_WA _______________________ [dB(A)]

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

Type
QLV-360 Displacement flow diffuser

Connection
       Circular spigot
O       Top
U       Bottom

Damper blade for volume flow rate balancing
No entry: none
M With

Lip seal
       No entry: none
L       With (only for top spigot)
       Bottom spigots always have a lip seal

Nominal size [mm]
∅D × H
Spigot diameter × nominal height

Fixing
No entry: none
B0 With base plate

Exposed surface
       No entry: powder-coated
       RAL 9010, pure white
P1       Powder-coated, specify RAL CLASSIC colour
S7       Uncoated (galvanised steel, untreated aluminium)

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

Order example: QLV–360–U/250×500/P1-RAL 9016

Connection	Circular spigot at the bottom
Damper blade for volume flow rate balancing	Without
Lip seal	Without
Nominal size	250 × 500 mm
Fixing	Without
Exposed surface	RAL 9016, traffic white, gloss level 70 %

Accessories, Dimensions and weight

Base plate 00224235_0

QLV-360-U

The nominal size (nominal width × nominal height) is equal to the discharge opening.

QLV-360

Nominal size	B₁ mm	H₁ mm	T₁ mm	ØD mm	A mm	m kg
160×500	240	500	240	158	120	6
200×500	280	500	280	198	140	7
250×500	330	500	330	248	165	8
160×600	240	600	240	158	120	7
200×600	280	600	280	198	140	8
250×600	330	600	330	248	165	10
315×600	395	600	395	313	197	11
160×800	240	800	240	158	120	8
200×800	280	800	280	198	140	10
250×800	330	800	330	248	165	11
315×800	395	800	395	313	197	14
400×800	480	800	480	398	240	17
160×1000	240	1000	240	158	120	10
200×1000	280	1000	280	198	140	11
250×1000	330	1000	330	248	165	13
315×1000	395	1000	395	313	197	16
400×1000	480	1000	480	398	240	20
500×1000	580	1000	580	498	290	25
315×1250	395	1250	395	313	197	19
400×1250	480	1250	480	398	240	23
500×1250	580	1250	580	498	290	28
630×1250	710	1250	710	628	355	36
400×1500	480	1500	480	398	240	26
500×1500	580	1500	580	498	290	32
630×1500	710	1500	710	628	355	40
630×1750	710	1750	710	628	355	44

Installation details, Basic information and nomenclature

Base plate 00224235_0

Installation and commissioning

With displacement ventilation and air discharge near the floor, extract air devices should be installed in the upper part of a room, above the occupied zone.
If necessary, carry out volume flow rate balancing with the damper blade

Principal dimensions

B₁ [mm]

Width of diffuser face

B₄ [mm]

Width of a rectangular spigot

ØD [mm]

Outer diameter of the spigot

ØD₁ [mm]

Casing diameter

H₁ [mm]

Height of diffuser face

T₁ [mm]

Casing depth

T₄ [mm]

Depth of a rectangular spigot

m [kg]

Weight

Nomenclature

L_WA [dB(A)]

A-weighted sound power level of air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

v₀ [m/s]

Theoretical airflow velocity across the diffuser area, at a distance of 0 m from the diffuser face

L_nz [m]

Near zone of the displacement flow diffuser, where the comfort criteria may not be achieved

The near zone is at least 0.5 m, independent of the airflow velocity

At distance L_nz the airflow velocity is 0.2 m/s max., measured 0.1 m above the floor

Δt_z [K]

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

Δp_t [Pa]

Total differential pressure

A_eff [m²]

Effective air discharge area

All sound power levels are based on 1 pW.

Downloads

product information

Product data sheet Type QLV-360

Product data sheet 1,5 MB pdf

certificates

Declaration of hygiene conformity Type QLV-360

QLV-360_HC_2024_05_DE_en Hygiene certificate 1,2 MB pdf
Non-CE Manufacturer's statement QLV-360

QLV-360_NotCE_2022_02_08_14_36_38_DE_en Certificate 1,2 MB pdf

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QLV-360

Polygon casing, 360° air discharge, for comfort and industrial zones

Application

Description

Technical information

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

Accessories, Dimensions and weight

Installation details, Basic information and nomenclature

Downloads

product information

Product data sheet Type QLV-360

certificates

Declaration of hygiene conformity Type QLV-360

Non-CE Manufacturer's statement QLV-360

TECHNICALLY NECESSARY

STATISTICS AND WEBSITE ANALYSIS

CONVENIENCE AND PERSONALISATION

FOR THE BEST TROX EXPERIENCE