Can You Link Settings For Heat Recovery Ventilation To Heat Exchanger Operated Shower?

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January 3rd, 2010 by admin

Our house has heat recovery ventilation. The time regulated controls never worked, so it is always set to min. But the shower room gets very condensated, and we have to manualy up the ventilation speed. The shower is operated from a heat exchanger off the boiler, and activated by a flow sensor (mains electric) Any ideas on how to set the ventilation unit to high speed when showering???

2 Responses

Dutch writes:
January 3rd, 20106:22 amat

Not sure I fully understand your setup, but I’ll take a stab.
You want a ventilation fan (heat recovery unit) to increase speed when you take a shower (to get rid of the humidity).
Two options come rather quickly to my usually foggy consciousness.
Both rely on the ability to install a relay(s) and circuitry into your ventilator motor controls to change the speed according to input from outside devices or switches.
Option 1: Humidistat in shower room. When humidity level rises, the humidistat signals the ventilator motor to increase speed. When the humidity returns to normal, then the ventilator motor returns to low.
Option 2: A flow switch in the hot water line to the shower. When you turn on the shower, the flow switch signals the motor like as in option 1. A time-delay relay or a sequencer would be needed to ensure the higher motor speed continues for a predetermined time after the water is shut off.
So, was I even close to a helpful answer?
done writes:
January 3rd, 20106:23 amat

Uhm,,,,,,,,,, Yeah, OK just reset the fraterstat to match the bearing pressure from the manual over ride valve located beside the auto crossover generator. Then be certain to re-tork both the inlet and outlet siphon valves and adjust the foot pounds accordingly. There you have it. Glad I could help you out.

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