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.
Data
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
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.
Flow grid
Flow grid multi point with 12 inlet holes in four concentric
circles.
Axle Shaft
12 mm diameter damper shaft made of galvanized steel.
Bearing
12 mm diameter Brass bearings.
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