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KOOLAIR S.A
Variable flow rate controllers – RVVQ-JVR

Variable flow rate controllers – RVVQ-JVR

Product catalog summary

Introduction
Koolair's RVV-Q and JVR are variable flow rate controllers designed for variable air volume systems and single duct installations. The RVV-Q model features a rectangular design with a measuring frame and a differential pressure sensor, ensuring high air tightness. These controllers manage air supply and return in air-conditioned spaces, maintaining pressure levels relative to adjacent rooms.

Models and Dimensions
Standardized dimensions are provided for the RVV-Q and JVR models, including options with and without central baffles for silencers.

Technical Data and Selection Tables
Technical data includes selection tables and graphs for RVV-Q and JVR models, detailing sound power levels, pressure drops, and air flow rates across various dimensions and configurations. These tables are essential for selecting the appropriate model based on specific requirements.

Control Mechanism
The RVV-Q controllers use electronic regulation with components such as a differential pressure sensor, optional temperature probe, controller, and servomotor. The servomotor adjusts the damper based on signals from the controller, which processes inputs from the sensors. Calibration is performed at the factory.

Normative Compliance
The RVV-Q and RVV-QD models comply with EN 1751 standards, achieving class "C" in air tightness tests.

Product Code
Product codes for RVV-Q and JVR models are provided, facilitating easy identification and ordering.

Specifications
The KOOLAIR JVR variable air volume (VAV) regulators are designed for variable air volume flow systems and single-duct installations. They feature a rectangular control unit with an air inlet connection made of galvanized sheet and a cross-shaped sensor with differential pressure inlets. The control damper has opposed, aerodynamic blades made of aluminum, with internal airtight seals for excellent air tightness. Optional internal fibreglass thermal-acoustic insulation is available.

Applications
The JVR regulator supplies variable air volume flow to a room based on thermal load variations and can control the return air volume to maintain specific pressure levels relative to adjacent rooms.

Control System
The air flow regulation is electronic, comprising a differential pressure sensor, a temperature sensor (not included), a controller, and an actuator. The actuator modulates the volume control damper based on signals from the sensors. The system allows setting maximum and minimum flow rates, which are controlled by the actuator.

Normative
The JVR and JVR-DS models meet EN 1751 standards, achieving class "C" in air tightness tests.

Models and Dimensions
The JVR and JVR-DS regulators are available in standard widths from 200 to 1200 mm and heights from 100 to 1050 mm, in 50-mm increments.

Technical Data and Selection Tables
Detailed tables show sound power levels and pressure drops for various sizes and configurations of the JVR regulators, aiding in model selection based on specific requirements.

Technical Specifications
Detailed technical specifications for RVV-Q and JVR models include dimensions, pressure levels, and sound spectrum data. The sound spectrum is measured by octave band, with levels indicated in decibels (dB).

Selection Tables
Selection tables for different configurations of the RVV-Q and JVR models detail air flow rates (Q) in liters per second (l/s) and cubic meters per hour (m3/h) at various pressure levels (Pa).

Sound Power and Pressure Loss
A chart for sound power and pressure loss is included, applicable to VAV regulators with a 1 m2 area. Correction factors for different cross-sections are provided, with adjustments ranging from -10 to +5 dB(A) based on the area.

Product Codes and Nomenclature
Product codes for RVV-Q and JVR regulators are explained, including variations for insulated models (RVV-QD and JVR-DS). Dimensions are specified in millimeters (mm), with examples provided for clarity.

Key Data Points
- Sound spectrum levels are generally below 20 dB.
- Pressure levels range from 100 Pa to 1000 Pa.
- Air flow rates are detailed for multiple configurations and dimensions.
- Correction values for sound power levels are provided for various damper cross-sections.

Catalog excerpts

Variable flow rate controllers – RVVQ-JVR-1

RVV-Q/JVR Variable flow rate controllers

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Variable flow rate controllers – RVVQ-JVR-2

Models and dimensions RVV-Q 3 Technical data. Selection tables RVV-Q 4 Technical data. Selection graphs RVV-Q 22 Technical data. Selection tables JVR 25 Technical data. Selection graphs JVR 41 Product code RVV-Q and JvR 42

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Variable flow rate controllers – RVVQ-JVR-3

Variable air volume Regulator, model RVV-Q Description Koolair regulators type RVV-Q, are rectangular regulators, and are to be used in variable air volume systems and single duct installations. The RVV-Q consists of a measuring frame with a cross sensor equipped with a differential pressure sensor made of galvanised steel sheet. The regulation damper is made of steel sheet and is provided with sealing lips and side seals to obtain a high level of air tightness. The minimum pressures for equipment setup depend on the actuator sensor accuracy. Applications Regulators type RVV-Q are used to supply...

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Variable flow rate controllers – RVVQ-JVR-4

Models and dimensions The DV following mentioned dimensions are the standardized dimensions for regulators RVV-Q. O MM Con MM Para MM RVV-QD NOMINAL DIMENSIONS IN MM L

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Variable flow rate controllers – RVVQ-JVR-5

RVV-Q with silencer PAK with central baffle RVV-Q with silencer PAK without central baffle

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Variable flow rate controllers – RVVQ-JVR-6

RVV-QD with silencer PAK with central baffle RVV-QD with silencer PAK without central baffle

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Variable flow rate controllers – RVVQ-JVR-7

Table of technical data. Sound power level and pressure drop. In the following table, it obtains the sound pressure level, considering a damping reflection and absorption 10 dB/oct.

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Variable flow rate controllers – RVVQ-JVR-9

Technical data. Selection tables RVVQ Lp: Sound pressure level of the regenerated noise, in dB(A), considering

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Variable flow rate controllers – RVVQ-JVR-10

Lp: Sound pressure level of the regenerated noise, i

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Variable flow rate controllers – RVVQ-JVR-11

10 RVV-Q /JVR Technical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-12

11 Technical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-13

12 RVV-Q /JVR Technical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-14

13 Technical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-15

RVV-Q /JVRTechnical data. Selection tables Technical data radiated noise. In the following table, it obtains the sound pressure level, considering an absorption 10 dB/oct local and a 100% of opening of the damper (pressure drop in Pa).

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Variable flow rate controllers – RVVQ-JVR-16

RVV-Q /JVRTechnical data. Selection tables RVVQ Radiated

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Variable flow rate controllers – RVVQ-JVR-17

RVV-Q /JVRTechnical data. Selection tables RVVQ Radiated Lp: Sound pressure level of the regenerated noise, in dB(A), considering a room

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Variable flow rate controllers – RVVQ-JVR-18

RVV-Q / JVRTechnical data. Selection tables RVVQ Lp: Sound pressure level of the regenerated noise, in dB(A), considering a room

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Variable flow rate controllers – RVVQ-JVR-19

18 RVV-Q /JVR Technical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-20

19 Technical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-21

20 RVV-Q /JVR Technical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-22

21 Technical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-23

RVV-Q /JVR Technical data. Selection graphs Table of technical data. Sound power level and pressure drop The technical data of the following table are for regulators with an area of 1 m2, for others sections, it is need to apply the correction factor that is showed at the bottom of this page. Symbols V (m/s) Frontal air velocity across the damper, in m/s. Pest (Pa) Pressure drop in Pa. Lwa [dB(A)] Sound power level, in dB(A)

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Variable flow rate controllers – RVVQ-JVR-24

VAV regulator, JVR model Description The KOOLAIR JVR variable air volume regulators are rectangular control units for use in variable air volume flow systems and singleduct installations. The regulators consist of an air inlet connection manufactured of galvanised sheet and fitted with a cross-shaped sensor that has differential pressure inlets. The control damper has opposed, aerodynamic blades and is manufactured of aluminium. The damper body includes internal airtight seals around its entire perimeter to ensure excellent air tightness. The blades are operated by a gear mechanism to achieve...

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Variable flow rate controllers – RVVQ-JVR-25

Models and dimensions The dimensions indicated below are standard sizes for the JVR and JVR-DS (internally insulated) VAV regulators. The standard dimensions of JVR are manufactured in widths of 200 to 1200 mm, in 50-mm increments (dimension L). The dimensions range from 100 to 1050 mm, in 50-mm increments (dimension H).

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Variable flow rate controllers – RVVQ-JVR-26

RVV-Q / JVRTechnical data. Selection tables Table of technical data. Sound power level and pressure drop. In the following table, it obtains the sound pressure level, considering a damping reflection and absorption 10 dB/oct local.

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Variable flow rate controllers – RVVQ-JVR-27

RVV-Q /JVRTechnical data. Selection tables JVR Regenerated

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Variable flow rate controllers – RVVQ-JVR-28

RVV-Q / JVRTechnical data. Selection tables JVR Lp: Sound pressure level of the regenerated noise, in dB(A), considering

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Variable flow rate controllers – RVVQ-JVR-29

RVV-Q /JVRTechnical data. Selection tables JVR Lp: Sound pressure level of the regenerated noise, in dB(A), considering a roo

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Variable flow rate controllers – RVVQ-JVR-30

RVV-Q / JVRTechnical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-31

RVV-Q /JVRTechnical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-32

31 Technical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-33

RVV-Q /JVRTechnical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-34

RVV-Q / JVRTechnical data. Selection tables Technical data radiated noise. In the following table, it obtains the sound pressure level, considering an absorption 10 dB/oct local and a 100% of opening of the damper (pressure drop in Pa).

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Variable flow rate controllers – RVVQ-JVR-35

RVV-Q /JVRTechnical data. Selection tables JVR

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Variable flow rate controllers – RVVQ-JVR-36

RVV-Q /JVRTechnical data. Selection tables JVR Lp: Sound pressure level of the regenerated noise, in dB(A), considering

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Variable flow rate controllers – RVVQ-JVR-37

RVV-Q /JVRTechnical data. Selection tables JVR Lp: Sound pressure level of the regenerated noise, in dB(A), considering

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Variable flow rate controllers – RVVQ-JVR-38

RVV-Q / JVRTechnical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-39

RVV-Q /JVRTechnical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-40

RVV-Q / JVRTechnical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-41

RVV-Q /JVRTechnical data. Selection tables Sound spectrum by octave band.

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Variable flow rate controllers – RVVQ-JVR-42

RVV-Q /JVR Technical data. Selection chart Sound power and pressure loss chart, for % opening (20% to 100%) The following chart corresponds to VAV regulators with an area of 1 m2. For other sections, please use the correction factor listed in the table at the bottom of this page. Symbols V (m/s) Frontal air flow velocity through the damper, in m/s Pest (Pa) Pressure drop in Pa Lwa [dB(A)] Sound power level, in dB(A)

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