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Recirc pump ~replace - do I need an unpowered relay?
A recirculator pump died - (I think condensation - it was circulating cold water when A/C was on - I think I have that under control).
Be gentle on me - I am not an HVAC installer, but I have worked with a lot of instruments, tools, etc. (experimental physics + fix everything at the house)
So I bought a replacement circulator, but when I got it home I realized that the one that I bought has no provision for a 24 control line like the one that died has. I bought a Grundfos to replace the Taco that died.
I am not sure but I don't think that I can even get a small Grundfos that has a relay built in? I have a ups15 35, a 1/25th hp pump.
So presently there is a 24v ac control line, that gets live when the system is calling for water to be circulated. So I need a relay. I looked at the Grundfos single zone UPZC-1, but it includes a 24v transformer.
I'm ok with buying it if it will work, but I think all I need is an unpowered relay? Is such a thing common? I don't want anything looking jury rigged. If the grundfos will work, I am fine using it? Is there some other part I could buy?
Any tips would be appreciated.