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VAV B 20 Series

Type: Rectangular / Round

Construction: Galvanized Steel (GI) / Stainless Steel

Application: Light & Medium Duty

 

In Pressure Dependent VAV Model VAV-GB-21/22 , the room thermostat modulates the VAV box damper directly to control the space temperature. This requires that the duct static pressure be maintained at designated levels so that enough air pressure is available to cool the room.

 

The terminal unit damper is positioned from a signal sent directly from the zone thermostat to the damper actuator without regard for system conditions. In a pressure dependent system, two zones on the same system are effected by the control of one another.

Data

Technical Features:

  • Volume control range from 100 to 0% is possible to the
    conditioned zone.
  • A minimum air volume set in terms of percentage (20%)
    can be provided if required, field adjustment is also
    possible.
  • 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.
  • Air volume capacity upto 2800 CFM
  • Electronics control factory supply & mounted.
  • Variety of control options available, based on
    applications.
  • 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

Casing

0.9 mm thick galvanized sheet steel.

Insulation

13 mm thick 32 kg/m³ density Acoustic liner.

Blade

0.9 mm thick galvanized sheet steel.

Axle Shaft

12 mm diameter damper shaft made of galvanized steel.

Bearing

12 mm diameter Brass.

Gasket

Neoprene Gasket.

Controls

Modulating.

Optional Fittings

Controls

Backnet DDC with suitable thermostat.

Sound Attenuator

VAV with additional length insulated casing for sound
attenuation.

Insulation

25 mm thick 32 kg/m³ density Acoustic liner.

Blade

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
noise.

Neck connections

Round inlet with round outlet and square inlet with square outlet.

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