Discussion in 'Maintenance and Troubleshooting' started by Neokane, Jan 27, 2016.
Here is my dashboard:
Let me assure you it is right.
While you are correct, the aurora estimate the wattage for the pump, the actual wattage consumed is very linear to the PWM signal, so there was no reason to actually measure it when the estimation is within a couple of watts of the PWM signal.
Also be critical of the literature you see and use the insanity check of your brain. If you use volts x amps x PF = watts and the table shows 0.09 amps minimum draw from the Magna Geo, how many watts at 230 v can that be? The watts in the table are likely a typo.
I verified the amp draw by the pump, and in lower compressor stages you get below 0.1 Amps.
Yep, over 30% of your entire system energy used is wasted by this pumping strategy. Also your fan motor uses way to much energy for my taste, although 95W is pretty good at stage 6.
Slow it down and watch you total wattage.
But your real "problem" is your pumping.
Attached is one of our 5 ton systems.
Not directly comparable, since the loop is colder, and the house temp, e.g. the return temp is warmer, thus less favorable on the compressor.
But nonetheless it uses lesser energy. The sole difference is the pumping power, which is 8% of yours.
Yeah, Hard to determine what the power factor is of the variable speed pump, but if you can vouch for actual wattage vs the documentation, then it is even more of a reason to find a method to remove the constant speed pump. Is the watttage for the 26-99 accurate?
My current ecm blower settings are
I usually dial down for
But that depends on your ductwork configuration. You static pressure seems to be low, which is good.
A 26-99 usually uses about 230-240 watts, a bit more when in series when it moves more gpm. For the 32-140 as a single pump I am not able to get it above 190 watts. Again, likely higher with higher flow rates. I usually run them at a maximum of 15 gpm.
So the 472 watts are probably accurate, although on the higher end of the expected spectrum.
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