Rectangular air volume controller RWPA

Transcription

1 Rectangular air volume controller RWPA TECHNICAL DATA page 189 Rectangular air volume controller RWPA Rectangular air volume controller RWPA enables automatic airflow control. RWPA 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. quality-quantity temperature control systems. RWPA complies with requirements for air tightness of class CEN 2. Product facts Rectangular air volume controller RWPA Intended for air volume regulation Acoustically insulated or uninsulated Available in vast number of sizes Product code eample: Controller RWPA VAV bo of width and height 20 cm, without acoustic insulation, equipped with Grüner 2VM actuator, standard airflow Fläkt Woods PLBOV

2 Rectangular air volume controller RWPA TECHNICAL DATA page 190 Scheme, operative principle RWPA schematic diagram Measurement pipes Damper Differential pressure converter Damper actuator P Regulator Set value input (0(2)-10V) Actual signal output (0(2)-10V) or MP-Bus 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 RWPA VAV bo is equipped with compact actuator 2VM manufactured by Grüner. Other automatic solutions are available on request. Controller has limiting flow value V GR preset by manufacturer. Fläkt Woods compact actuator 2VM is a complete unit comprising of actuator, a dynamic differential pressure sensor for pressure-independent controls and user interface with 3-digit display which enables monitoring the air flow and setting up values of V ma and V min without eternal equipment. The actuator can also be force controlled via closing contacts (timer, presence detector, etc.) to override the set min or ma air flow. It is also possible to use the controller with a CAV function. Fläkt Woods PLBOV

3 Rectangular air volume controller RWPA TECHNICAL DATA page 191 Operating range, dimensions Operating range of particular controller sizes Following table shows recommended minimum V min [m 3 /h] and limiting V GR [m 3 /h] airflow value preset by manufacturer (*): H (cm)/b (cm) (*) Other settings of V GR value on request. V ma corresponds to air going through the VAV bo with velocity of 8 m/s. V min corresponds to air going through the VAV bo with velocity of 1 m/s. Change of operation point % V MAX 100%V NOM 10V 10V Reference value input (0)2...10V 2V 0V 0% V MIN 100%V NOM Bo without acoustic insulation E=B+85* 20* H H 1 =H+* B B 1=B+* 0 Fläkt Woods PLBOV

4 Rectangular air volume controller RWPA TECHNICAL DATA page 192 Dimensions, installation guidelines Bo with acoustic insulation E=C+ H H =H+* 1 D=H+ B B=B+* 1 C=B+ 0 *) Dimensions given in mm. If one of the dimensions B or H is equal to or greater than mm: frame width = mm RWPA bo schedule (*) H (cm)/b (cm) (*) Other dimensions available on request Installation guidelines Due to accuracy of airflow control it is recommended to install RWPA bo in a certain distance from other elements of ventilation system which may disturb the airflow pattern. Rules of controller's installation are shown below: Fläkt Woods PLBOV

5 Rectangular air volume controller RWPA TECHNICAL DATA page 193 Wiring diagrams Eamples of RWPA electric connections - compact actuator Grüner 2VM Parallel control of two flow variators Master-Slave control of two flow variators CAV Constant air volume Forced control Detailed technical data can be found in technical brochure of actuator. Fläkt Woods PLBOV

6 Rectangular air volume controller RWPA TECHNICAL DATA page 194 Wiring diagrams Eamples of RWPA electric connections - compact actuator Belimo (L,N)MV-D3-MP Parallel control of two flow variators Master-Slave control of two flow variators CAV Constant air volume Control via MP-Bus Fläkt Woods PLBOV

7 Rectangular air volume controller RWPA TECHNICAL DATA page 195 Application eamples Maintaining constant airflow in ventilation duct Air volume controller maintains constant airflow according to the given V min value. RWPA P Wł Cooperation with room temperature sensor Constant change of airflow within the range from V min to V ma, depends on reference signal coming from room temperature controller. + RWPA P Maintaining constant pressure in ventilation duct or premise RWPA 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

8 Rectangular air volume controller RWPA TECHNICAL DATA page 196 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. For controllers which width B is other than 0 mm, read data must be corrected by L factor. Total sound power level can be calculated using following formula: L TOT = L WA + L Sound power level at outlet RWPA Pa 0 Pa RWPA Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa 81 Fläkt Woods PLBOV

9 Rectangular air volume controller RWPA TECHNICAL DATA page 197 Acoustic data RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA Pa 0 Pa Correction factor L for various widths B of the regulator B (cm) L (db) Sound power level emitted to surrounding, controller without acoustic insulation RWPA Pa 0 Pa RWPA Pa 0 Pa RWPA 00 2 Pa 0 Pa Fläkt Woods PLBOV

10 Rectangular air volume controller RWPA TECHNICAL DATA page 198 Acoustic data RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA Pa 0 Pa Sound power level emitted to surrounding, controller with acoustic insulation RWPA Pa 0 Pa Fläkt Woods PLBOV

11 Rectangular air volume controller RWPA TECHNICAL DATA page 199 Acoustic data RWPA Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa RWPA 00 2 Pa 0 Pa Fläkt Woods PLBOV

12 Rectangular air volume controller RWPA TECHNICAL DATA page 200 Pressure drop, descriptive tet, product code Pressure drop over RWPA controller (damper fully open) P [Pa] , v[m/s] Product code Air volume controller RWPA-aaa-bbb-c-d-e Width (cm) 020, 0, 0, 0, 0, 0, 0, 0, 0, 100, 120 Height (cm) 010, 020, 0, 0, 0 0, 0, 0, 100 Acoustic insulation 0 - without 1 - with Type of actuator 1 - Belimo NMV-D3-MP 2 - Belimo NM-V and VRD Siemens GLB181.1E 4 - Grüner 2VM (Fläktwoods branded) Airflow 1 - standard X - non-standard Fläkt Woods PLBOV

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