ECM circulators

Wayco Wayne_2

I love all the new variable speed circulators on the market these days, however you don't always need such fancy controls in every situation. Does anyone have a simple circ with ECM motor that you can just set for one gpm? I'm thinking for the purpose of a dedicated circ for the primary side of a boiler loop to a hydraulic separator. That way you could have the lower operating costs of an ECM motor without paying for and on board computer in the circ controls or equivalent.

hot_rod

fixed speed?

Hi Wayne, I know the Grundfos Alpha have 3 fixed speed modes, add a flow meter as the display for GPM on any of the ECMs is not always accurate.



Also the B&G Vario is a basic ECM circ, the Armstrong Compass also.



Be sure to add a magnetic separator with ECM circs, especially old iron systems, and non barrier tube jobs

SWEI

One GPM

is clearly in the ecocirc e3 realm.  They're no less expensive than an Alpha or a Stratos, but they draw tiny amounts of power.  Much better to run a pump in the sweet spot of its curve than to bounce of the bottom.

Wayco Wayne_2

Scottish

It just seems to me they could make one that was not so fancy that you could dial in to the gpm or delta tee you want and then turn a screw to lock it in place. It would cost less but save a lot on operating costs.

SWEI

ecocirc e3 Vario

Has a knob on the side -- just turn it to the speed you want (we dial in the ∆T we want) and leave it there.

Wayco Wayne_2

Thanks

I hadn't. Heard of it. I'll look it up.

Solid_Fuel_Man

ECM (electronicalle commentated motor)

You need the "board" and it's electronics to make the circulator work.  It is essentially a stepper motor with many drivers to make the windings charge in a circular pattern.  Basically aside from the display there is no extra electronics involved that wouldn't otherwise be there just to make an ECM. 



TS