Heating & Ventilation Units : DF VAV

The variable air volume models allow the volume of heated make up air to vary to suit the changing requirements of the building or changing exhaust rates. The units are installed with a special box burner system complete with integral fan(s) to make sure of optimum combustion throughout the range of varying volume main air supply. The units supply 100% fresh air at all times but the volume of fresh air is automatically adjusted either by the application of a building pressure sensor or temperature sensors.