Greenway

Setup Exhaust from bathroom and living room. Boost fans at 70%, fresh outside air input. It was a cold snap sub zero by 10pm and even with the system in open loop we get very good distribution and no condensation. 8pm 29-09-2020 10pm 29-09-2020 Nicer styled dashboard now deployed

See  https://greenwayerv.blogspot.com/2020/10/we-added-60-litre-plenum-on-vent-side.html

The office duct is 8 meters long with a single booster fan 3 M from the vent before the insulated sound deadening duct section.

  Living room vents installed. Took around 4 hours including cleanup In the loft. The ducts are determining the location of the ERV core for me I think.

  This is a 2 port flap valve allowing proportional control of the exhaust stale air extraction side of the system. We have chose two exhaust locations Bathroom and a new vent in the living room. This design allows us to have two climate zones one for the living room and one for the bedrooms and the rest of the house. Its designated Turbo because it has 60 Watt fan embedded in it to boost the air flow to help match the input flow from the inlet and booster fans.

  After a few experiments I decided I wanted the following options for the input air source. 1) Fresh air from roof top. Function as a vanilla balanced ERV ventilation system, all exhaust air passes through the heat exchanger, all incoming air is warmed by the heat exchanger. 2) Loft air, typically warmer if the Sun is out even on a cold day. Reduce need for heating during the day. 3) Fresh Air bypassing the heat exchanger to reduce the need fore running the heat pump on sunny days when the air temperature is still quite low. 4) Block all four ports to prevent air moving from convection or an open window raising or reducing air pressure in the room. So the four port valve was born. ts got a dual drive now which works really well. The wooden gear was inspired by the Marble Machine i have toughened the teeth with Epoxy now which make it quite substantial.