Ventilation grilles for instal lation into circular ducts Type 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

Ventilation grilles for installation into circular ducts General information Type TRS-R Page General information Function Technical data Quick sizing Specification text Order code Dimensions and weight Product details Installation details Commissioning Basic information and nomenclature TRSR – 2 TRSR – 3 TRSR – 6 TRSR – 7 TRSR – 8 TRSR – 9 TRSR – 10 TRSR – 12 TRSR – 13 TRSR – 14 TRSR – 15 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...

Ventilation grilles for installation into circular ducts 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...

Ventilation grilles for installation into circular ducts Air pattern with ceiling effect, sectional view TRS-R Air pattern without ceiling effect, sectional view Distance from ceiling ≤ 0.3 m Air pattern with ceiling effect, top view Air pattern without ceiling effect, top view Air pattern with ceiling effect, group of grilles, top view Distance between single grilles ≥ 0.15 × lS Distance from ceiling ≤ 0.8 m Air pattern without ceiling effect, group of grilles, top view Distance between single grilles ≥ 0

Ventilation grilles for installation into circular ducts Air pattern, group of grilles, top view b < 0.1 × lS Several single grilles arranged in a row and with not much distance between them have the same effect as a continuous horizontal run.

Ventilation grilles for installation into circular ducts Technical data Nominal sizes Minimum volume flow rate Maximum volume flow rate, with LWA max. 40 dB(A) without attachments Supply air to room air temperature difference Volume flow rates apply to supply air Geometric free area H mm Effective air discharge area (supply air) H mm Effective air discharge area H mm

Ventilation grilles for installation into circular ducts Quick sizing × LWA = 40 dB(A) with unrestricted airflow+ LWA = 40 dB(A) with airflow restricted by 50

Ventilation grilles for installation into circular ducts Specification text This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme. Ventilation grilles, rectangular, made of galvanised sheet steel, for supply and extract air. Aesthetic sloped border with chamfered inside edge Installation preferably in circular ducts. Ready-to-install component which consists of a border and individually adjustable, vertical blades. Countersunk holes for fixing the grille to the installation surface. Sound power...

Ventilation grilles for installation into circular ducts Order code  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  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 % 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 Order example: TRS-R-R5/825×225/P1-RAL 9010 Attachments...

Ventilation grilles for installation into circular ducts The weight table shows the available nominal sizes TRS-R, 27 mm wide front border Nominal height Weights apply to ventilation grilles without attachments TRS-R-RD, 27 mm wide front border

Ventilation grilles for installation into circular ducts Nominal height Weights apply to ventilation grilles without attachments Circular duct dimensions Nominal height 75 75 125 225 Variant TRSR TRSR-5 from L = 825 mm All All

Ventilation grilles for installation into circular ducts Product details Front border – longitudinal section (L), 24 mm

Ventilation grilles for installation into circular ducts Installation details 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

Ventilation grilles for installation into circular ducts Volume flow rate balancing When several ventilation grilles are installed on the same duct, it may be necessary to balance the volume flow rates. – AG: Damper unit with opposed action blades, adjustable, secured with a locking screw – AS: Damper unit with hit and miss damper, adjustable, secured with a locking screw Air pattern – Adjustable blades: Set the air control blades individually or together and depending on the local conditions – D, DG: Air control blades, fitted at 90° to the front blades, can be adapted to the local conditions...