Let‘s realize the potential of air for a sustainable world Technical brochure Pressure controller DRE The DRE pressure controller offers an efficient, precise and cost-effective solution for line pressure control in ventilation and air-conditioning systems. It is ideal wherever a constant pressure is required in air pipes without the need for measurement of the air flow rate. Differential pressure control up to 1000 Pa Air leakage rate according to DIN EN 1751, class 4 (DN 100/125: class 3) Housing tightness class C accord. to DIN EN 1751 No flow path required Low pressure losses: Energy savings, quiet operation Precise line pressure control for stable operating conditions Measuring range: 0...500 Pa depending on version Conversion or programming to DREactive or VREactive is possible Compact design, retrofittable insulation shell W W W . L T G - A G . COM

LTG Comfort Air Technology | Technical brochure Pressure controller DRE, round Application range, design, features, materials and finishes, optional versions, 3 accessories and special versions Function, installation, positioning 4 Ventilation systems with pressure controllers 7 Nomenclature, ordering code 8 Technical data, controller components 9 © LTG Aktiengesellschaft, Grenzstrasse 7, 70435 Stuttgart , Germany Tel. +49 711 8201-0, Fax +49 711 8201-720, [email protected], www.LTG-AG.com Previous editions are invalid. Subject to technical changes.

LTG Comfort Air Technology | Technical brochure Pressure controller DRE, round Application range The DRE pressure controller is used for line pressure control in air pipes within ventilation and air-conditioning systems. It ensures that a constant and defined inlet pressure is maintained at downstream components such as air flow controllers, induction units or air diffusers. This automatically balances the air circuits and achieves optimised pressure distribution throughout the entire system. The measured pressure value can be used, taking the damper position into account, to control the fan...

LTG Comfort Air Technology | Technical brochure Pressure controller DRE, round Installation, positioning How does the DRE work? The static pressure in the air duct is detected via a pressure tap at the desired measuring point and measured by the differential pressure sensor. The controller compares the actual pressure with the preset setpoint and controls the damper blade so that the setpoint is maintained as accurately as possible. This control principle ensures stable pressure distribution throughout the duct network and contributes to efficient fan control. 2 The DRE pressure controller itself...

LTG Comfort Air Technology | Technical brochure Pressure controller DRE, round © LTG Aktiengesellschaft, Grenzstrasse 7, 70435 Stuttgart , Germany Tel. +49 711 8201-0, Fax +49 711 8201-720, [email protected], www.LTG-AG.com Previous editions are invalid. Subject to technical changes.

LTG Comfort Air Technology | Technical brochure Pressure controller DRE, round © LTG Aktiengesellschaft, Grenzstrasse 7, 70435 Stuttgart , Germany Tel. +49 711 8201-0, Fax +49 711 8201-720, [email protected], www.LTG-AG.com Previous editions are invalid. Subject to technical changes.

LTG Comfort Air Technology | Technical brochure Pressure controller DRE, round DRE Ventilation systems with pressure controllers (examples) The pressure setpoint must be designed in accordance with the downstream loads. A calculation of the air duct network is essential. Ventilation systems with pressure controllers in the supply air and extract air circuits Line pressure controller 24 V A: for open-plan offices Extract air diffuser B: for individual rooms Transfer air diffuser LDO Line pressure controller 24 V 7 Line pressure controller 24 V DRE A: for open-plan offices Extract air diffuser...

LTG Comfort Air Technology | Technical brochure Pressure controller DRE, round DRE = Pressure controller, round, short Please specify when ordering: - Control: Analogue or Modbus If this information is not provided, the unit will be supplied with the following factory setting: - Analogue control Ordering example DRE 100/S/D/L/G710, Pmin = 150 Pa, Pmax = 300 Pa, 2...10 V mode, Modbus control © LTG Aktiengesellschaft, Grenzstrasse 7, 70435 Stuttgart , Germany Tel. +49 711 8201-0, Fax +49 711 8201-720, [email protected], www.LTG-AG.com Previous editions are invalid. Subject to technical changes.

LTG Comfort Air Technology | Technical brochure Pressure controller DRE, round © LTG Aktiengesellschaft, Grenzstrasse 7, 70435 Stuttgart , Germany Tel. +49 711 8201-0, Fax +49 711 8201-720, [email protected], www.LTG-AG.com Previous editions are invalid. Subject to technical changes.

LTG Comfort Air Technology | Technical brochure Pressure controller DRE, round © LTG Aktiengesellschaft, Grenzstrasse 7, 70435 Stuttgart , Germany Tel. +49 711 8201-0, Fax +49 711 8201-720, [email protected], www.LTG-AG.com Previous editions are invalid. Subject to technical changes.

LTG Comfort Air Technology | Technical brochure Pressure controller DRE, round Aptot " Total pressure difference fm - Octave midband frequency Lw - Sound power level Lwa - Sound power level, A-weighted LpA - Sound pressure level, A-weighted © LTG Aktiengesellschaft, Grenzstrasse 7, 70435 Stuttgart , Germany DRE_eng_TP (07/26) Tel. +49 711 8201-0, Fax +49 711 8201-720, [email protected], www.LTG-AG.com Previous editions are invalid. Subject to technical changes.

LTG Comfort Air Technology | Technical brochure Pressure controller DRE, round APtot - Total pressure difference fm - Octave midband frequency Lw - Sound power level Lwa - Sound power level, A-weighted LpA - Sound pressure level, A-weighted The values for structure-borne noise emission refer to the emitting outer surface of an air duct, including a built-in flow rate controller made of galvanised sheet steel, with a total length of 6 m. Resonance effects may cause deviations of up to ± 6 dB in frequency-dependent sound power levels. © LTG Aktiengesellschaft, Grenzstrasse 7, 70435 Stuttgart ,...