ADDITONAL OPERATING INSTRUCTIONS ACCORDING TO ATEX 2014/34/EU VQEX Volumetric flow controller ATEX PERFORMANCE DATA         Operating temperature: 10 - 50° C Ambient temperature: 0-50° C Differential pressure range: 50-1000 Pa Volumetric flow range: 291 to 47081 m³/h Housing leakage according to DIN EN 1751, class B Housing and damper leaf leakage to DIN EN 1751, up to Class 4, (only JK-LU) For regulating the air velocity in duct in the range of 2-13 m/s Command signal: 0-10 V DC or 2-10 V DC VDI 6022, Sheet 1: Hygienic requirements of ventilation and air-conditioning systems DIN EN 13779 (2007): Ventilation of non-residential buildings Leakage air: EN 1751 (2014-06) Ventilation for buildings - Aerodynamic testing of damper and valves Compact dimensions and low depth (400 mm) position-independent installation possible Low pressure loss easy mode of operation and reliable control simple commissioning and setting, without the need of additional setting devices at the controller with spring return actuator (if required) SCHAKO | Ferdinand Schad KG Steigstraße 25-27 D-78600 Kolbingen RoHS 2002/95/EC 2014/34/EU ATEX (product directive) EMC 2004/108/EC Low voltage 2006/95/EC

ATEX volumetric flow controller VQEX ADDITIONAL OPERATING INSTRUCTIONS ACCORDING TO ATEX 2014/34/EU Table of contents | Construction subject to change No return possible

ATEX volumetric flow controller VQEX ADDITIONAL OPERATING INSTRUCTIONS ACCORDING TO ATEX 2014/34/EU Overview of product versions | Function OVERVIEW OF PRODUCT VERSIONS VQEX FUNCTION A volumetric flow controller is used for pressure-independent volumetric flow regulation in ventilation and air-conditioning systems. It serves to keep the volumetric flow either constant within specified limits (CAV) or to control it variably (VAV). The housing, measuring sensor, blades, PI controller with pressure sensor and actuator form a closed control loop with feedback, allowing demand-dependent, energy-saving...

ATEX volumetric flow controller VQEX ADDITIONAL OPERATING INSTRUCTIONS ACCORDING TO ATEX 2014/34/EU Areas of application | Tests and standards • with supply voltage 24 V AC / DC +/- 15 %, 50/60 Hz • with DD varnish coating for aggressive media (please refer to the resistance table in a separate documentation) • for regulating the air velocity in the duct in the range of 2...13 m/s • can also be used with vertical axis The rectangular volumetric flow controller type VQEX made of galvanised steel is suitable for use with aggressive components of polluted air and in areas subject to explosion hazards....

ATEX volumetric flow controller VQEX ADDITIONAL OPERATING INSTRUCTIONS ACCORDING TO ATEX 2014/34/EU Processing | Available sizes PROCESSING AVAILABLE SIZES Housing • Galvanised sheet steel • Galvanised sheet steel with DD coating • opposed, made of extruded aluminium profile (JK-LU) • opposed, made of sheet steel profile (HKU) Blade seal • made of PUR, silicone-free • airtight sealing design to DIN-EN 1751, up to class 4, including multi-leaf damper JK-LU • not sealing airtight, including multi-leaf damper HKU Blade support • Sintered bearing Blade activation • Stainless steel gear wheels Measuring...

ATEX volumetric flow controller VQEX ADDITIONAL OPERATING INSTRUCTIONS ACCORDING TO ATEX 2014/34/EU Useable volumetric flow ranges | ► MIN value refers to air velocity of 2 m/s ► MAX value refers to air velocity of 13 m/s When the air volume drops below the Vmin shown in the chart, the correct functioning of the volumetric flow controller is no longer guaranteed. Other sizes available on request. ATTENTION: IMPORTANT FOR PARAMETERISATION • The table of "useable volumetric flow ranges" corresponds to the complete measuring range. • When the air volume drops below Vmin, the correct functioning...

ATEX volumetric flow controller VQEX TECHNICAL DOCUMENTATION Min i mum torque VQEX-HKU I Minimum torque VQEX-JK-LU H 600 - 1003, class 4 at 1000 Pa available at an extra charge Construction subject to change No return possible

ATEX volumetric flow controller VQEX TECHNICAL DOCUMENTATION Accessories | Accessories dimensions made of sound-absorbing, insulating 40 mm material, nonflammable according to DIN 4102-17, with sheet steel covering made of galvanised sheet steel (standard), with cage nuts (M6) Mineral wool silencer (-ZSQ-EX) with baffles type MWK --- Housing of galvanised sheet steel (standard) --- Baffle frame made of galvanised sheet steel (standard), on both sides with METU profile M3 — Mineral fibre boards according to DIN 4102 A2, with glass filament cover, biosoluble, wear-resistant additional silencer...

ATEX volumetric flow controller VQEX TECHNICAL DOCUMENTATION Sound data | Construction subject to change No return possible

ATEX volumetric flow controller VQEX TECHNICAL DOCUMENTATION Connection diagram ATEX unit | Connection diagram - ATEX controller CONNECTION DIAGRAM ATEX UNIT CONNECTION DIAGRAM - ATEX CONTROLLER ExReg-V300-A is the standard version for controlling variable volumetric flows (VAV). The alarm contact (terminal 3) serves to provide feedback for normal operation. Moreover, the device has an analogue output (terminal 11) which emits the current setpoint value as a continuous signal and an analogue feedback of the damper position (terminal 9). This function is mainly used for saving energy. A setpoint...

ATEX volumetric flow controller VQEX TECHNICAL DOCUMENTATION Prior to mounting and commissioning | PRIOR TO MOUNTING AND COMMISSIONING An instruction leaflet containing information on safety, transport disposal, installation, commissioning and maintenance is enclosed with each SCHAKO product. For safety reasons, this instruction leaflet must be read der all circumstances and completely adhered to. Zero point adjustment of the static pressure sensor see SCHISCHEK documentation For Schischek ExReg-V300-A controller, a zero adjustment must be performed for commissioning in order to correct mounting...