Attached is my heating system layout. Boiler is a Teledyne JVT100NDI (133,000).
Confused about the piping and bypass setup. Bypass pipe is much shorter than in diagram with no valve to regulate (see pic)
3 Circulating pumps (CP).
I think CP3 has to do with the bypass to maintain return temp, but when CP3 runs, it seems to draw heat through the entire system, even when a floor has no call for heat.
2 story older home. About 1800 sq ft split evenly between 2 stories. Mostly PEX piped. There about 200 linear feet of PEX running along the unheated basement ceiling for supply and return. I foam sleeve insulated it all.
I was told I just cut out CP3 and the bypass and straight pipe the return. Boiler manual indicates a need for the bypass to maintain return temp.
Is this setup correct as it is? Thanks in advance.