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Circulator Energy Consumption
I am working with a vendor to flesh out the 'near boiler' configuration of my hydronic heating/cooling system. As part of this system, I will have a chilled water coil installed into the HRV intake duct. The purpose will be to condense out humidity as needed (latent load) during our very short cooling season (shorter still for me due to high performance building envelope). It is likely that this condensing system would be running less than a month a year.
The vendor has suggested an "EC Circulator on autoadapt / constant pressure mode which stays on all the time and fires-up in response to pressure drop". They then suggested adding a zone valve to the circuit to control the 'on/off' times.
I am trying to find out what the standby energy consumption on a setup like this would be.
I was expecting to just install a circulator that was controlled by a relay and turned on and off as needed for condensing.
I am assuming the constant pressure is needed in this single fixed length circuit because the pressure drop of the condensing coil would increase as it ices up before dropping during a 'thaw' cycle.