film izle

VAV B 30 Series

Pressure Independent Type – AHRI

Type: Rectangular / Round

Construction: Galvanized Steel (GI) /Stainless Steel

Application: Light & Medium Duty;


In PRESSURE INDEPENDENT Model VAV-B-31/32 The room thermostat increases or decreases the amount of CFM that the room receives based upon the zone temperature. A CFM controller modulates the VAV box damper to maintain the desired CFM setting as set by the thermostat. Temperature is controlled indirectly from the amount of cool air, the box allows to enter the room. This means that no matter what the pressure is in the duct (as long as there is some minimum amount) the box damper will open and close to meet the CFM requirement.


This makes the VAV box independent of duct pressure. The pressure independent control options also monitor and respond to the velocity of the air flow, generally at the inlet of the unit.


Technical Features:

  • AHRI Certified.
  • Test Conducted at minimum static pressure at 100% of
    standard airflow.
  • Volume control range from 100 to 10% is possible to the
    conditioned zone.
  • Accurate airflow sensing with 2 X 12 points averaging.
  • Low Leakage i.e. less than 2% of V nominal at 750 Pa.
  • Designed to produce low NC levels with minimal
    pressure drop to the system.
  • Suitable for use as constant volume application,it can
    maintain a set flow requirement, compensating for
    fluctuations in system pressure.
  • Suitable for single duct variable volume control
  • Air volume capacity upto 2800 CFM
  • Electronics control factory supply & mounted.
  • Variety of control options available, based on
  • Electronic thermostat & actuator provide accurate
    mounting control.
  • Metal encapsulated edges limit fiberglass insulation
    erosion into the airstream.
  • Single-point power connection reduces installed cost.
  • Maintenance free.

Standard Construction


0.9 mm thick galvanized sheet steel.


13 mm thick 32 kg/m³ density Acoustic liner.


0.9 mm thick galvanized sheet steel.

Flow grid

Flow grid multi point with 12 inlet holes in four concentric

Axle Shaft

12 mm diameter damper shaft made of galvanized steel.


12 mm diameter Brass bearings.


Neoprene Gasket.



Optional Fittings


Backnet DDC with suitable thermostat.

Sound Attenuator

VAV with additional length insulated casing for sound


25 mm thick 32 kg/m³ density Acoustic liner.


0.9 mm thick aluminium extruded aerofoil multiple blades.

Duct Heater

Slip-in type electric duct heater (230V AC 1 Phase or
400V AC 3 Phase)

Double skin

Insulated internal walls surface with Galvanized perforated
sheet used for low noise applications to minimise breakout

Neck connections

Round inlet with round outlet and square inlet with square


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