ᐅ Is my central mechanical ventilation system working correctly?

Created on: 26 Jul 2019 09:55
B
bernie
Hello everyone,
I have a question regarding the mechanical ventilation with heat recovery (Westaflex, central system with heat recovery and bypass function):

Indoors (exhaust air temperature 24°C (75°F))
Outdoors 35°C (95°F)
Setpoint room temperature 20°C (68°F)

With these values, the hot outside air should actually pass through the heat exchanger to be cooled by the "only" 24°C (75°F) exhaust air. However, the hot outside air bypasses the heat exchanger instead: the bypass damper is active.

How is it working for you?
L
Lumpi_LE
26 Jul 2019 13:55
There are usually defined limits for indoor and outdoor temperatures. These often include a margin of 2-3 degrees to prevent the door from opening and closing every 20 minutes. I think your indoor temperature of 24°C (75°F) is still too low; it will probably work better at around 26-27°C (79-81°F).
B
bernie
26 Jul 2019 17:28
Thank you for the responses so far. @Lumpi: that sounds reasonable, thanks.
Mycraft26 Jul 2019 17:41
Yes, that is usually how it works. However, as I mentioned at the beginning, it depends on how the programming (settings) is configured.

For example, mine runs in summer with hysteresis override.