MM#67 and feeder compatibility

kcopp

Current boiler is a Crown gas Steamer…

Not that old but it has a MM67 float type lwco.

The feeder is a Unimatch WF2-U-24

Customer complains that the feeder overfills each time lwco is triggered.

There are no settings on the feeder to limit the water.

VXT should allow more control correct?

JUGHNE

Can you throttle the flow out of the feeder?

I do that when the boiler feed pump is too aggressive and jiggles the float to shut off the burner. I use the iron quarter turn plug valves which I reclaimed from gas lines when replacing those with ball valves.

kcopp

Tried that. No dice.

Big Ed_4

I remember dip switches in the Unimatch where you set it for the 67 ..

EBEBRATT-Ed

Water level bouncing?

I looked it up. Discontinued and replaced by a newer control.

It is supposed to have a 3 position slide switch to change the timing.

The newer control has something similar and also has different orifices to change the flow rate.

kcopp

Im sure the orifices are LONG gone.

That 67 switch is it. No delay or timing for cycle.

EdTheHeaterMan

if you need better control the Unimatch WF2-U-24 can be replaced by a VXT. If throttling the water thru the Unimatch WF2-U-24 is not getting you where you need to be.