Type EF

EF-0/845×245

EF

Grille cores made of aluminium, with fixed horizontal blades

Grille cores with special profiled blades

Nominal sizes 245 × 95 – 1245 × 445 mm
Volume flow rate range 10 – 1235 l/s or 36 – 4446 m³/h
Grille core made of aluminium with anodised finish
Straight (0°) or angled (15°) air discharge

Application

Application

Ventilation grille cores of Type EF as supply air or extract air variant for comfort zones and industrial zones
Directed supply air discharge for mixed flow ventilation
Blades for straight (0°) or angled (15°) air discharge to meet different local requirements
For variable and constant volume flows
For supply air to room air temperature differences from –12 to +4 K
For covering all types of openings

Special characteristics

Fixed blades
0° or 15° air discharge
Blade pitch 12.5 mm or 16.7 mm

Nominal sizes

Nominal length: 245, 345, 445, 545, 645, 845, 1045, 1245 mm
Nominal height: 95, 145, 245, 345, 445 mm

Other dimensions upon request

Description

Variants

Blade pitch 12.5 mm
G: Blade pitch 16.7 mm

Blade construction style

0: 0° discharge
15: 15° discharge

Parts and characteristics

Fixed horizontal blades
Two lateral mullions
Vertical centre mullion (depending on length)

Construction features

Transverse bars for clip-fixing the grille (bars snap into clips)

Materials and surfaces

Blades made of aluminium
Anodised blades, E6-C-0, natural colour
P1: Blades powder-coated, RAL CLASSIC colour

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

Teknisk information

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

Schematic illustration of a ventilation grille with longitudinal blades

① Front border
② Longitudinal blades
③ Centre mullion

Functional description

Ventilation grilles are air terminal devices for the supply air and extract air of ventilation and air conditioning systems. They direct the supply air into the room. Ventilation grilles with adjustable blades allow for adapting the discharge direction to the local conditions. The result is a mixed flow ventilation in comfort zones and industrial zones, with good overall room ventilation.

Induction slows the airflow down, i.e. the airflow velocity decreases as the distance from the grille increases. The distance at which the airflow velocity reaches a certain defined value, e.g. 0.2 m/s, is called throw distance. The supply air jet from wall grilles that are installed near the ceiling achieves a larger throw distance than a free jet (from a grille that is not installed near the ceiling). Single grilles, groups of grilles and continuous horizontal runs all achieve different throw distances.

In cooling mode it is necessary to take account of the jet deviation towards the occupied zone, which increases as the supply air to room air temperature difference increases and the discharge velocity decreases. In heating mode the supply air jet deviates towards the ceiling. This has no negative effect on the airflow velocity in the occupied zone, but it may affect the complete ventilation of the room.

Nominal sizes	245 × 95 to 1245 × 445 mm
Minimum volume flow rate	10 – 410 l/s or 36 – 1476 m³/h
Maximum volume flow rate, with L_WA max. 40 dB(A) without attachments	55 – 1235 l/s or 198 – 4446 m³/h
Supply air to room air temperature difference	–12 to +4 K

Volume flow rates apply to supply air

EF, geometric free area

H	L [mm]
H	245	345	445	545	645	845	1045	1245
H	A_geo
mm	m²
95	0.015	0.021	0.028	0.034	0.040	0.052	0.064	0.076
145	0.022	0.031	0.040	0.049	0.058	0.075	0.093	0.111
245		0.050	0.065	0.080	0.094	0.121	0.151	0.180
345			0.090	0.110	0.130	0.168	0.208	0.249
445					0.166	0.215	0.266	0.318

EF-G, geometric free area

H	L [mm]
H	245	345	445	545	645	845	1045	1245
H	A_geo
mm	m²
95	0.018	0.025	0.033	0.040	0.047	0.061	0.076	0.090
145	0.026	0.037	0.047	0.058	0.069	0.089	0.110	0.131
245		0.060	0.077	0.095	0.112	0.145	0.179	0.214
345			0.107	0.131	0.155	0.201	0.249	0.297
445					0.198	0.256	0.318	0.379

EF, volume flow rate ranges 00246689_0

× L_WA = 40 dB(A) with unrestricted airflow+ L_WA = 40 dB(A) with airflow restricted by 50 %

Ventilation grille cores, rectangular, made of aluminium, for supply and extract air.

Ready-to-install component which consists of fixed horizontal blades, two lateral mullions, and possibly a vertical centre mullion (depending on length).

Preferably for installation into an installation subframe provided by others.

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

Special characteristics

Fixed blades
0° or 15° air discharge
Blade pitch 12.5 mm or 16.7 mm

Materials and surfaces

Blades made of aluminium
Anodised blades, E6-C-0, natural colour
P1: Blades powder-coated, RAL CLASSIC colour

Technical data

Nominal sizes: 245 × 95 to 1245 × 445 mm
Minimum volume flow rate (supply air): 10 – 410 l/s or 36 – 1476 m³/h
Maximum volume flow rate (supply air), at L_WA max. 40 dB(A) without attachments: 55 – 1235 l/s or 198 – 4446 m³/h
Supply air to room air temperature difference: –12 to +4 K

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
EF Grille core

Blade pitch
No entry: 12.5 mm
G 16.7 mm

Blade construction style
0 0° blades (straight)
15 15° blades (angled)

Nominal size [mm]
L × H

Exposed surface
No entry: anodised, E6-C-0, natural colour
P1 Powder-coated, specify RAL CLASSIC colour

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

Order example: EF-G-0/645×245

Blade pitch	16.7 mm
Blade construction style	0°
Nominal size	645 × 245 mm
Exposed surface	Anodised, E6-C-0, natural colour

Dimensions and weight, Product details

EF-0

L Nominal length Vertical centre mullion if L > 625 mm
H Nominal height

The weight table shows the available nominal sizes

H	L [mm]
H	245	345	445	545	645	845	1045	1245
H	m
mm	kg
95	0.3	0.5	0.6	0.7	0.9	1.2	1.4	1.7
145	0.5	0.7	1.0	1.2	1.4	1.8	2.3	2.7
245	0.9	1.3	1.7	2.0	2.4	3.1	3.9	4.6
345	1.3	1.8	2.4	2.9	3.4	4.5	5.5	6.6
445	1.7	2.4	3.1	3.7	4.4	5.8	7.2	8.5

EF-G

H	L [mm]
H	245	345	445	545	645	845	1045	1245
H	m
mm	kg
95	0.2	0.3	0.4	0.5	0.6	0.8	1.0	1.2
145	0.4	0.5	0.7	0.9	1.0	1.3	1.6	2.0
245	0.7	0.9	1.2	1.5	1.8	2.3	2.9	3.4
345	1.0	1.4	1.7	2.1	2.5	3.3	4.1	4.9
445	1.2	1.8	2.3	2.8	3.3	4.3	5.3	6.3

Blade *-0

Installation details, Basic information and nomenclature

Installation and commissioning

Installation and fixing preferably in installation subframes (subframes to be provided by others)

Principal dimensions

L [mm]

Nominal length of the ventilation grille

H [mm]

Nominal height of the ventilation grille

m [kg]

Weight

Nomenclature

L_WA [dB(A)]

Sound power level of the air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

Δp_t [Pa]

Total differential pressure

l_S [m]

Distance from single grille or horizontal run section (throw distance)

Nedladdningar

produkt information

Print page Type EF
Linear Grilles

T 1.1/1/EN/2 Technical Leaflet 1,4 MB pdf

Referenser

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