Circular air volume controller RWOA

Transcription

1 Circular air volume controller RWOA TECHNICAL DATA page 7 Circular air volume controller RWOA Circular air volume controller RWOA enables automatic airflow control. RWOA is suitable for use in systems with variable air volume VAV and in other cases, where constant air flow is required. Regulator can work in connection with other automatic control devices e.g. qualityquantity temperature control systems. Product facts Circular air volume controller RWOA Intended for air volume regulation Acoustically insulated or uninsulated Available in sizes Product code example: Controller RWOA1 VAV box of size, with acoustic insulation, equipped with Belimo NMVD2MP actuator, standard airflow Fläkt Woods PLBOV.07 1

2 Circular air volume controller RWOA TECHNICAL DATA page 8 Scheme, operative principle RWOA schematic diagram Measurement pipes Damper Differential pressure converter Damper actuator P Regulator Set value input (0(2)V) Actual signal output (0(2)V) or MPBus function Operative principle Signal from measurement elements is converted by differential pressure converter onto electric signal and then transmitted to regulator. Regulator controls damper actuator accordingly to the result of set and measured value comparison. Standarly RWOA controller is equipped with compact actuator N(L)MVD2MP manufactured by Belimo. Other automatic solutions are available on request. Controller has limiting flow value V GR preset by manufacturer. Operating range of controller can be changed by using BelimoTool software. It is possible to set maximum V max and minimum V min regulated flow value. None of these values can exceed limiting flow value V GR. Fläkt Woods PLBOV.07 2

3 Circular air volume controller RWOA TECHNICAL DATA page Operating range Operating range of controllers size V[m /h] V [l/s] Following table shows limiting V GR [m 3 /h] airflow value preset by manufacturer (*): Size V GR [m 3 /h] (*) Other settings of V GR value on request. If the velocity of air in box is under 2 m/s, there might be inaccuracy of regulation up to %. V max corresponds to air going through the VAV box with velocity of. V min corresponds to air going through the VAV box with velocity of 2 m/s. Change of operation point % V MAX 0%V NOM V V Reference value input (0)2...V 2V 0V 0% V MIN 0%V NOM Fläkt Woods PLBOV.07 3

4 Circular air volume controller RWOA TECHNICAL DATA page 0 Dimensions, installation guidelines Box without acoustic insulation D A L L 1 Box with acoustic insulation D D1 A 1 L L 1 Size L [mm] L 1 [mm] D [mm] D 1 [mm] A [mm] A 1 [mm] Installation guidelines Due to accuracy of airflow control it is recommended to install RWOA box in a certain distance from other elements of ventilation system which may disturb the airflow pattern. Rules of controller's installation are shown below: 3D 2D 1D Fläkt Woods PLBOV.07 4

5 Circular air volume controller RWOA TECHNICAL DATA page 1 Wiring diagrams Examples of RWOA electric connections AC V DC V AC V DC V MP Reference value input MP / Actual value signal W U/MP..MVD2MP W U/MP..MVD2MP VAV with analogue reference signal BUS operation VAV function AC V CLOSED VAV Reference value input Switchover CLOSED/VAV operation MP / Actual value signal W U/MP..MVD2MP VAV with shutoff (CLOSE), 2...V mode Technical data of actuator (*) Supply voltage V AC (,2,8) (/Hz) V DC (,6,8) Power consumption 3W Belimo type LMVD2MP 3.5W Belimo type NMVD2MP Connection cable 3x0.75mm 2 Reference value input w (connection 3) Actual value signal U5 (connection 5) Operating volumetric flow V MAX V MIN Communication 2 V DC / 4 ma with 0Ω res. 0 V DC / 0 ma with 0Ω res. 0 V DC 2 V DC 0 V DC Differential pressure sensor 2 0Pa Measuring air conditions 0% of V NOM 0 0% of V MAX PP/MPBus, max. V DC, baud 0 C / 5 5% noncondensing (*) Detailed technical data can be found in technical brochure of actuator manufacturer Belimo. Fläkt Woods PLBOV.07 5

6 Circular air volume controller RWOA TECHNICAL DATA page 2 Application examples Maintaining constant airflow in ventilation duct Depending on how W switch is set, air volume controller maintains constant airflow according to the given V max and V min values. AC V V MIN V MAX W RWOA P Wł W U/MP..MVD2MP Cooperation with room temperature sensor Constant change of airflow within the range from V min to V max, depends on reference signal coming from room temperature controller. RWOA AC V DC V from temperature sensor 0(2)...V P W U/MP..MVD2MP Maintaining constant pressure in ventilation duct or premise RWOA P Wł In this case airflow measurement elements are not used. One input of the pressure converter is connected to premise space or ventilation duct. Fläkt Woods PLBOV.07 6

7 Circular air volume controller RWOA TECHNICAL DATA page 3 Acoustic data Following tables show sound power levels [db] in octave bands and sound power levels for various air velocities and pressure drops over device. Sound power level at outlet RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa 74 Fläkt Woods PLBOV.07 7

8 Circular air volume controller RWOA TECHNICAL DATA page 4 Acoustic data RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa Sound power level emitted to surrounding, controller without acoustic insulation RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa Fläkt Woods PLBOV.07 8

9 Circular air volume controller RWOA TECHNICAL DATA page 5 Acoustic data RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa Sound power level emitted to surrounding, controller with acoustic insulation RWOA 2 Pa 0 Pa RWOA 8 2 Pa 0 Pa RWOA 2 Pa 0 Pa Fläkt Woods PLBOV.07

10 Circular air volume controller RWOA TECHNICAL DATA page 6 Acoustic data RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa RWOA 2 Pa 0 Pa Fläkt Woods PLBOV.07

11 Circular air volume controller RWOA TECHNICAL DATA page 7 Pressure drop, descriptive text, product code Pressure drop over RWOA controller (damper fully open) P [Pa] 8 6 size V[m /h] V [l/s] Descriptive text Air volume controller RWOA manu fac tured by Fläkt Woods. Product code Air volume controller RWOAaacde Size,,,,,,, Acoustic insulation 0 = without 1 = with Type of actuator 1 = Belimo NMVD2MP 2 = Belimo NMV and VRD2 3 = Siemens GLB1.1E Airflow 1 = standard X = nonstandard Fläkt Woods PLBOV.07

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