VARIABLE AIRFLOW RECTANGULAR REGULATORS OVERVIEW Overview : The CL-VRR series regulators are terminal regulation units for the flow of air to be used in single duct systems with functional range between 20 and 1000 Pa. These regulators are used to control and maintain the quantity of air in variable air flow systems. The complete shut off is certified to EN 1751-EN 1886 standards. The auto-generated and irradiated noise tests have been carried out to UNI EN 25135 and ISO 3741 standards at the Giordano Institute (test report N. 153262 and 154143). Technical Characteristics: The CL-RPV regulators are assemble from: - casing in galvanized steel in different dimension corresponding to the standard sizes of rectangular air ducts. - Air flow regulation damper in galvanized steel with longitudinal and lateral holding gaskets gaskets. - Dynamic ∆p probe for the measure and maintenance of the flow of air in relation to that requested in the room. -motor regulator in linear with the regulation and control of the flow. CL-VRR SERIES Accessories : - double casing - additional silencer Uses : With motors: - Siemens GDB181.1/E3; - Belimo NMV-D2MPVC; - Belimo LMV-D2MPVC; - Belimo NM24V + reg. VRD2; - Other motor types to be agreed at quotation stage. The regulators are supplied, as standard, complete with motors from our test benches according to customer request. For requests without motor, that will in any case have to be calibrated and applied by the customer, MP3 can not in any way guarantee the correct functioning of the apparatus. Applications : The CL-VRR series regulators are used to supply a variable flow of air to the room to be conditioned, in relation to the variation of its thermal loads so as to maintain the maximum thermal comfort conditions. The auto-generated and irradiated noise tests have been carried out to EN ISO 3741 standards. Text for tender: Rectangular variable air flow regulator for use in single duct systems, model CL-VRR manufactured by MP3 Srl, constructed in galvanized steel, complete of differential pressure detector, temperature probe, regulator and actuator.

VARIABLE AIRFLOW RECTANGULAR REGULATORS WORKING PRINCIPLE WORKING PRINCIPLE “INDEPENDENT PRESSURE” The regulation of the air flow is made by a dynamic pressure control system that can guaranty "the initial independence of the pressure". In so doing, all the requested air flow variations will not disturb the other air flows of other uses. The control system is comprised of the following elements: - Air flow measuring element - Regulation element (the air flow regulator) that receives actual information relative to the measurement of the flow of air and to the request from the room. - This regulator...

VARIABLE AIRFLOW RECTANGULAR REGULATORS WORKING PRINCIPLE CL-VRR SERIES Regulator calibration For the calibration of the regulator CL-VRR it will be necessary to indicate the maximum and minimum flows requested for the intended use. The maximum air flow must be between the two values indicated in the table. The minimum air flow must be greater or equal to the value indicated in the table Installation arrangements for a correct reading of the performances and for a air flow tolerance of 5%, it is necessary at the source to supply a straight section of duct of a length equal to three times the...

VARIABLE AIRFLOW RECTANGULAR REGULATORS TECHNICAL DATA CL-VRR SERIES AIR FLOW VALUE AND NOISE LOSS The data for the generated and irradiated noise for the 600mm length, for various heights, are exposed for three values of static Δp of working. The irradiated noise has been measure with the simple casing regulator. For the noise values of the regulators having a height different to 600mm, apply the correction values indicated at the bottom of the page. GENERATED NOISE AND AIR FLOW LOSS BxH (mm) 600x110

VARIABLE AIRFLOW RECTANGULAR REGULATORS STANDARD SIZES CL-VRR SERIES CL-VRR-N SERIES RECTANGULAR REGULATOR WITH SIMPLE CASING CL-VRR-I SERIES RECTANGULAR REGULATOR WITH DOUBLE CASING STANDARD REGULATOR SIZES SERIE CL-VRR CL-VRR CL-VRR CL-VRR CL-VRR CL-VRR CL-VRR CL-VRR CL-VRR CL-VRR CL-VRR CL-VRR Other sizes on request

VARIABLE AIRFLOW RECTANGULAR REGULATORS HOW TO ORDER CL-VRR SERIES CL-VRR Rectangular regulator Base Height Supply right-hand motor N Simple casing I Double casing Siemens GDB181.1/E3 Belimo LMV-D2MPVC Belimo NMV-D2MPVC Belimo NM24V + reg. VRD2 OTHER SIZES ON REQUEST AVAILABLE MOTORS Siemens GDB181.1/E3 NOTE A standard motorisation is non provided, it will be necessary to always indicated the requested motor. For help in the choice of motors please contact our commercial office.

CIRCULAR REGULATORS WITH VARIABLE AIR FLOW CL-VRC SERIES Overview : I The CL-VRC series of variable flow regulators are regulation units to be used in single duct systems. these regulators are used to control and maintain the air quantity in the systems with variable air flow. The complete shut off is certified to EN 1751-EN 1886 Standards. Variable air flow regulator CL-VRC-N Technical characteristics: Variable air flow regulator with double casing CL-VRC-I The CL-VRC regulators are assemble from: - circular casing in galvanized steel from 100 up to 400 mm diameters equal to the standard circular...

CIRCULAR REGULATORS WITH VARIABLE AIR FLOW WORKING PRINCIPLES WORKING PRINCIPLE “INDEPENDENT PRESSURE” The regulation of the air flow is made by a dynamic pressure control system that can guaranty "the initial independence of the pressure". In so doing, all the requested air flow variations will not disturb the other air flows of other uses. The control system is comprised of the following elements: CL-VRC SERIES EXCLUSIVE ADVANTAGES - Variable air flow completely independent from the initial pressure - Temperature regulation (not supplied) by a command signal with direct action (cold exit) -...

CIRCULAR REGULATORS WITH VARIABLE AIR FLOW PERFORMANCE Regulator calibration For the calibration of the regulator CL-VRC it will be necessary to indicate the maximum and minimum flows requested for the intended use. The maximum air flow must be between the two values indicated in the table. The minimum air flow must be greater or equal to the value indicated in the table CL-VRC SERIES Pressure losses through a closed damper : The air tighr gasket, fitted on the perimiter of the damper, can maintain a level of pressure loss through it below 0.1% of the nominal air flow, with a maximum pressure...