Volume Flow Controller - TROX - #12

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12 Design changes reserved · All rights reserved © TROX GmbH ( 03/2008) Order Details Specification text Make: TROX. VAV circular controller Type TVR-Easy for variable air volume flow systems, for supply air or extract air, in 7 nominal sizes. Selection based on nominal size determination. Simple setting by the customers of the volume flow with V . min- and V . maxadjustment potentiometers with percentage scales. During the installation or commissioning of controller, adjustment is possible without supply voltage. A transparent protection cover prevents inadvertent resetting and provides general security. Control damper blade delivery is in 45° position in order to allow ventilation air flow without additional control functions. Special characteristics: – Flow rate adjustment without adjustment tool – Functional testing with service button – Functional check by indicator light – Factory functional testing of each unit using a dedicated test rig High visibility external indicator light for signalling the functions: Set, not set and power failure. Functional testing of actuator ‘CLOSED/OPEN and control operation’ possible with service button. Electrical connections with screw terminals, terminal for looping the 24 V supply voltage, i.e. for the connection of simple voltage transmission to the next controller. Wire clamping bracket fixed to the casing. Voltage range for control and actual value signal 0 to 10 VDC. Possible override controls with external switches using potential-free contacts: CLOSED, OPEN, V . min or V . max. Integral differential pressure sensor with 3 mm measurement holes which are, to a large extent resistant to contamination. Damper blade closed leakage to DIN EN 1751, class 4 (nominal sizes 100 and 125, class 3). Position of the damper blade visible externally based on the milled flat on the shaft extension. TROX Compact electronic flow rate controller factory fitted. Casing air leakage complies with DIN EN 1751, class A. Differential pressure range 20 to 1000 Pa. Materials: Casing in galvanised sheet steel, aluminium sensor tubes, thermoplastic elastomer control damper blade seal and plain bearings. Unit variant with: Additional acoustic cladding to reduce case-radiated noise. Consists of 50 mm mineral wool and outer cover of galvanised sheet steel. This gives a reduction in case-radiated noise of minimum 7 dB providing the upstream and downstream ducting has a rigid external insulation. Non-retrofittable. Order example Make: TROX Type: TVR-Easy / 200 TVR-Easy / 200 / 100 125 160 200 250 315 400 Nom. size Type Standard construction, Type TVR-Easy with acoustic cladding, Type TVRD-Easy Accessories Standard construction, no entry required Lip seal D2 Order code