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[Tree_Killer]

I just tried to fire up the mf5000 for the season, but it appears I have a problem.

The wood stove reached temp of 180.  But inside the house the temp readings are only 145 on the one pipe, and 80 on the other.  I checked all the valves multiple times, and everything was open.

First picture shows the circulator that I think is not working properly. The pipe coming into the top is hot, but pipe coming out is cold...the feed to the furnace.  Would I be correct in thinking I should replace it?

Second picture is of the model number.  Should I do a direct replacement with another Taco? Or is there a better choice?

[fireboss]

You probaly have an  air bubble can you bleed it?

[Tree_Killer]

I guess I can disconnect the bottom flange and check there for air.  I will try that tomorrow

[slimjim]

take a wrench and whack the housing a couple of times, it more than likely is simply seized up and about 90% of the time that will free up the impeller, the motor and impeller can be removed from the housing by removing the 4 7/16th's bolts and that gives you access to the impeller, simply turn it with your hand until it frees up then re install.

[Tree_Killer]

The circulator is toast...propeller was messed up and deteriorated.

So replace with the same Taco pump? Or go with another/better brand?

[slimjim]

A Taco 009 will get you a bit more flow

[Tree_Killer]

it is a taco 009-f5. Just wasnt sure if it was the best product out there

[slimjim]

Not a bad circ but I would rip out that darn Flo check entirely on the wood boiler loop