Vent Axia PIV Unit - Switch live when spur has switch

[Alexkx3]

Thanks for the info. I'm in a flat, where due to the configuration the ventilation is very poor (all the windows are on side so hard to get circulation. The air just feels really heavy and stale in the flat, and my wife suffers from terrible coughing, nose running, and allergies when ever she's in it. Also having the windows open enough to get circulation makes the flat way too cold and draughty. Hope this PIV will solve the issue. I've fixed the inlet to an air brick so it's drawing in air directly from outside. Time will tell.