Information
Specified for air discharge (supply), with adjustable centre element for flow control. The valves are made of polypropylene, white colour, sealed to the frame with elastic tape. Mounting frames are made of galvanized sheet metal.
- electric control 24 V (4 W)
- protection IP61
- mechanical with timing for DCV systems (ventilation controlled by actual need)
- suitable for reconstruction of prefabricated houses without the need to intervene in the HVAC distribution system
- setting min. flow rate by turning the disc
- low noise and crosstalk values
- ambient temperature up to 100 ˚C
Installation
Valves are inserted into the mounting frame, which is not included. The mounting frame is used to fix the valve to a ceiling structure, wall or circular pipe. By rotating the centre disc, the minimum continuous flow rate of the closed valve can be adjusted. For the mechanical version, a minimum opening corresponding to approx. 20 l/s is required to ensure the run-out time (see diagram on the next page).
Mounting Frames
VLZ-03-10, VLZ-03-12 - without rubber seal, for valves with bayonet
VLZ-06-10, VLZ-06-12 - without rubber seal, for valves with flat springs
Application
VEL electrically operated disc valves are suitable for DCV (demand controlled ventilation) systems. The systems operate on the principle of controlling to a constant pressure in the riser pipe. A CTE 24/5 W transformer is used for power supply. The differential pressure sensor of the CTB and CRxB Ecowatt Plus fans with control electronics will increase the speed to adjust to the previous pressure value.