DLQ-AK

Nominal sizes	300, 400, 500, 600, 625 mm
Minimum volume flow rate	40 – 150 l/s or 144 – 540 m³/h
Maximum volume flow rate, with LWA ≅ 50 dB(A)	545 – 565 l/s or 1962 – 2034 m³/h
Supply air to room air temperature difference	–10 to +10 K

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

The maximum volume flow rates apply to a sound power level of approx. 50 dB (A).

Exact values for all parameters can be determined with our Easy Product Finder design programme.

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

The maximum volume flow rates apply to a sound power level of approx. 50 dB (A).

Exact values for all parameters can be determined with our Easy Product Finder design programme.

DLQ-AK-1, DLQ-AK-2, DLQ-AK-3, DLQ-AK-4 (supply air), sound power level and total differential pressure

Nominal size	V		Damper blade position
Nominal size	V		0°		45°		90°
Nominal size	V		Δpt	LWA	Δpt	LWA	Δpt	LWA
Nominal size	l/s	m³/h	Pa	dB(A)	Pa	dB(A)	Pa	dB(A)
300	40	144	10	16	12	19	18	23
300	65	234	26	31	32	34	47	38
300	95	342	56	42	67	45	101	49
300	120	432	90	50	107	53	161	57
400	50	180	4	<15	6	<15	10	13
400	105	378	19	28	25	32	42	35
400	160	576	45	41	58	45	99	48
400	215	774	81	50	105	54	178	57
500	100	360	5	16	7	19	14	23
500	180	648	16	32	22	35	46	39
500	260	936	33	43	47	46	97	50
500	340	1224	57	50	80	53	166	57
600	150	540	4	14	7	19	14	23
600	265	954	14	31	21	36	44	40
600	385	1386	29	42	44	47	94	51
600	505	1818	50	50	76	55	161	59
625	150	540	4	11	7	16	15	21
625	265	954	14	28	21	33	46	38
625	385	1386	29	39	44	44	97	49
625	545	1962	59	50	88	55	194	60

DLQ-AK-2E (supply air), sound power level and total differential pressure

Nominal size	V		Damper blade position
Nominal size	V		0°		45°		90°
Nominal size	V		Δpt	LWA	Δpt	LWA	Δpt	LWA
Nominal size	l/s	m³/h	Pa	dB(A)	Pa	dB(A)	Pa	dB(A)
300	40	144	9	16	11	18	17	22
300	65	234	24	31	28	33	45	37
300	95	342	50	42	61	44	96	48
300	120	432	80	50	97	52	153	56
400	50	180	4	<15	6	9	10	13
400	105	378	19	28	25	31	45	35
400	160	576	45	41	59	44	104	48
400	215	774	82	50	106	53	188	57
500	100	360	5	12	7	16	15	20
500	180	648	16	30	23	34	47	38
500	260	936	34	41	47	45	98	49
500	350	1260	61	50	86	54	178	58
600	150	540	4	11	7	15	13	20
600	265	954	13	29	21	33	41	38
600	385	1386	27	41	43	45	87	50
600	515	1854	48	50	78	54	155	59
625	150	540	4	8	7	13	14	17
625	265	954	13	26	21	31	42	35
625	385	1386	27	38	43	43	89	47
625	565	2034	58	50	93	55	193	59

Ceiling diffusers with square diffuser face. For supply air only, for comfort zones. Diffuser face with fixed air control blades for horizontal one-way to four-way supply air discharge. For installation into all types of suspended ceilings.

Ready-to-install component which consists of the diffuser face with fixed air control blades, front frame with perimeter seal, plenum box, side entry spigot and suspension holes.

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

• Horizontal one-way to four-way supply air discharge
• Diffuser face made of formed sheet steel, powder-coated
• For all types of ceiling systems
• Spigot side can be selected
• Horizontal duct connection

Materials and surfaces

• Diffuser face made of formed sheet steel
• Damper blade and plenum box made of galvanised sheet steel
• Lip seal made of rubber
• Diffuser face powder-coated RAL 9010, pure white
• P1: Powder-coated, RAL CLASSIC colour

Technical data

• Nominal sizes: 300, 400, 500, 600 mm
• Minimum volume flow rate: 440 – 150 l/s or 144 – 540 m³/h
• Maximum volume flow rate, with L_WA ≅ 50 dB(A): 545 – 565 l/s or 1962 – 2034 m³/h
• Supply air to room air temperature difference: –10 to +10 K

Sizing data

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

Air-regenerated noise

• L_WA _______________________ [dB(A)]

Ceiling diffusers with square diffuser face. For supply air only, for comfort zones. Diffuser face with fixed air control blades for horizontal one-way to four-way supply air discharge. For installation into all types of suspended ceilings.

Ready-to-install component which consists of the diffuser face with fixed air control blades, front frame with perimeter seal, plenum box, side entry spigot and suspension holes.

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

• Horizontal one-way to four-way supply air discharge
• Diffuser face made of formed sheet steel, powder-coated
• For all types of ceiling systems
• Spigot side can be selected
• Horizontal duct connection

Materials and surfaces

• Diffuser face made of formed sheet steel
• Damper blade and plenum box made of galvanised sheet steel
• Lip seal made of rubber
• Diffuser face powder-coated RAL 9010, pure white
• P1: Powder-coated, RAL CLASSIC colour

Technical data

• Nominal sizes: 300, 400, 500, 600 mm
• Minimum volume flow rate: 440 – 150 l/s or 144 – 540 m³/h
• Maximum volume flow rate, with L_WA ≅ 50 dB(A): 545 – 565 l/s or 1962 – 2034 m³/h
• Supply air to room air temperature difference: –10 to +10 K

Sizing data

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

Air-regenerated noise

• L_WA _______________________ [dB(A)]

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

L_WA [dB(A)]

A-weighted sound power level of air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

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.

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

L_WA [dB(A)]

A-weighted sound power level of air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

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.