Velco VSR Replacement for an old wall mounted vent
Velco VSR Fresh Air Valve
The thermostat regulated Velco VSR is a fresh air valve designed to replace an old valve. The thermostat adjusts its opening according to outdoor temperature enhancing ventilation energy efficiency. The thermostat fully opens at temperatures above + 10 °C and closes it at temperatures below -5 °C. In colder weather, a few millimeters of minimum opening ensures sufficient ventilation. The minimum opening can be adjusted to suit the installation site.
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