TRS-R (circular duct installation)

TRS-R/825×225

TRS-R

Ventilation grilles, made of galvanised sheet steel, with individually adjustable, vertical blades, for installation into circular ducts

Ventilation grille with droplet shaped blades

Nominal sizes 225 × 75 – 1225 × 225 mm
Volume flow rate range 11 – 930 l/s or 40 – 3348 m³/h
Grille face made of galvanised sheet steel
Front border with countersunk holes, 27 mm wide

Optional equipment and accessories

Grille face in RAL CLASSIC colours
Attachments for volume flow rate balancing and air direction control

v2.23.1.162

Application

Application

Ventilation grille of Type TRS-R as supply air or extract air variant for comfort zones and industrial zones
Directed supply air discharge for mixed flow ventilation
Blades are adjustable 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 installation into circular ducts

Special characteristics

Individually adjustable blades

Nominal sizes

Nominal length: 225, 325, 425, 525, 625, 825, 1025, 1225 mm
Nominal height: 75, 125, 225 mm

Other dimensions upon request

Description

Variants

TRS-R-RA: Grille face with vertical blades
TRS-R-RD: Grille face with vertical and horizontal blades, individually adjustable

Parts and characteristics

Sloped border with chamfered inside edge
Individually adjustable, vertical blades
Factory fitted perimeter seal
RD: Individually adjustable, horizontal blades for air direction control

Attachments

RS, R5: For volume flow rate balancing

Construction features

Asymmetrically supported blades
Front border with countersunk holes

Suitable circular duct diameter

H = 75 mm: Ø150 – 400 mm (with attachment -5 and L from 825 mm: Ø224 – 400 mm)
H = 125 mm: Ø300 – 900 mm
H = 225 mm: Ø600 – 2400 mm

Materials and surfaces

Border and blades made of galvanised sheet steel
P1: Border and 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

Technical information

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

Schematic illustration of a ventilation grille with transverse blades

① Front border
② Transverse blades

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.

TRS-R, volume flow rate ranges 00259994_0

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

Type
TRS-R Single grille

Variants and attachments
       Variants
RA       Grille face with vertical blades
RD       Grille face with individually adjustable vertical and horizontal blades for air direction control
       Attachments
RS       Hit and miss damper for TRS-R-RA
R5       Slanting hit and miss damper for TRS-R-RD

Nominal size [mm]
L x H

Surface
No entry: galvanised grille face
P1 Powder-coated, specify RAL CLASSIC colour

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

Order example: TRS-R-R5/825×225/P1-RAL 9010

Attachments	Damper unit, special hit and miss damper and air control blades
Nominal size	825 × 225 mm
Exposed surface	Powder-coated RAL 9010, pure white

Dimensions and weight, Product details

TRS-R, 27 mm wide front border

L Nominal length
H Nominal height

The weight table shows the available nominal sizes

TRS-R-RA

Nominal height mm H_N	T₂ mm
75	37
125	41
225	52

TRS-R-RD

Nominal height mm H_N	T₂ mm
75	45
125	49
225	60

TRS-R-RA

H	L [mm]
H	225	325	425	525	625	825	1025	1225
H	m
mm	kg
75	0.4	0.5	0.7	0.8	0.9	1.2	1.5	1.8
125	0.5	0.7	0.8	1.0	1.2	1.6	1.9	2.3
225		1.0	1.2	1.5	1.8	2.3	2.8	3.3

Weights apply to ventilation grilles without attachments

TRS-R-RD

H	L [mm]
H	225	325	425	525	625	825	1025	1225
H	m
mm	kg
75	0.5	0.6	0.8	1.0	1.1	1.4	1.8	2.2
125	0.6	0.9	1.0	1.3	1.6	2.1	2.5	3.0
225		1.4	1.8	2.2	2.6	3.4	4.2	5.0

Weights apply to ventilation grilles without attachments

Circular duct dimensions

Nominal height	Variant	Minimum	Maximum
mm	Variant	mm
75	TRSR	150	400
75	TRSR-5 from L = 825 mm	224	400
125	All	300	900
225	All	600	2400

Installation details, Commissioning, Basic information and nomenclature

Ventilation grille with screw fixing 00151457_0

① Ventilation grille
② Fixing screw (by others)

Installation and commissioning

Installation preferably in circular ducts
Installation with or without installation subframe
If no installation subframe is used, the border should be fixed with screws
If the grille is installed into a spiral duct of a larger diameter, the duct seams should be riveted

Downloads

product information

Product data sheet Type TRS-R

Product data sheet 1,6 MB pdf

certificates

Declaration of hygiene conformity TRS-R

TRS-R_HC_2024_05_DE_en Hygiene certificate 1,3 MB pdf
Non-CE Manufacturer's statement TRS-R

TRS-R_NotCE_2022_02_08_14_34_19_DE_en Certificate 1,1 MB pdf

operation manuals

Installation manual Lüftungsgitter

IM_2019_06_A00000054451_Lüftungsgitter_V3_GB_en Installation manual 680 KB pdf

References

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Its blend of traditional and modern design creates a pleasant, welcoming atmosphere. It is a place where you simply feel good.

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Nominal sizes	225 × 75 to 1225 × 225 mm
Minimum volume flow rate	11 – 275 l/s or 40 – 990 m³/h
Maximum volume flow rate, with L_WA max. 40 dB(A) without attachments	62 – 930 l/s or 223 – 3348 m³/h
Supply air to room air temperature difference	–12 to +4 K

H	L [mm]
H	225	325	425	525	625	825	1025	1225
H	A_geo
mm	m²
75	0.007	0.011	0.015	0.018	0.022	0.029	0.036	0.043
125	0.015	0.022	0.030	0.037	0.044	0.059	0.074	0.089
225		0.045	0.060	0.075	0.090	0.119	0.149	0.179

H	L [mm]
H	225	325	425	525	625	825	1025	1225
H	A_eff
mm	m²
75	0.007	0.011	0.014	0.018	0.021	0.029	0.036	0.043
125	0.014	0.021	0.029	0.036	0.043	0.057	0.072	0.086
225		0.043	0.057	0.072	0.086	0.114	0.142	0.172

H	L [mm]
H	225	325	425	525	625	825	1025	1225
H	A_eff
mm	m²
75	0.006	0.009	0.011	0.014	0.016	0.022	0.028	0.033
125	0.011	0.016	0.022	0.028	0.033	0.044	0.055	0.066
225		0.033	0.044	0.055	0.066	0.090	0.110	0.134
325			0.066	0.083	0.100	0.134	0.170	0.200
425					0.134	0.180	0.220	0.270
525							0.280	0.340