[dcapone]

I'm 99% sure that the answer to this question is no, but I wanted to verify.

I have a new boiler being installed and being of where the connections on the boiler are, the contractor wants to make the return the output and connect it to the pump and the present "out", the return.

Will this matter? Is this perfectly acceptable to do?

 

[roughneck]

Depends greatly on what kind of system we are talking about here. A hydronic heating system is not the same as every other hydronic system. Is this multi zone? Where are the expansion tank(s)? Make up? Flow checks?

 

[supers05]

Post a picture of the current piping and any pumps or valves connected to it.

Cheers!

 

[dcapone]

Current system is probably 35+ years old and is a bit of a mess. I will try to draw/work something up later tonight and post.

 

[supers05]

A picture would still be helpful.

Cheers!

 

[dcapone]

Attached are a picture of the old boiler showing the circulator pump line and the return line going back into the boiler.

Also attached is a VERY rough layout of the home and where the heating piping is routed and T'd. The RED coloring is 1 inch pipe and represent the supply side coming off of the boiler, the BLUE coloring is 1 inch piping and represent the return side coming back from the boiler, and the orange is all 3/4 inch piping.

I should note that everything is a single zone which should be obvious from boiler pic and only 1 circ.

 

[supers05]

The pump has to be on the return side. I don't see an expansion tank. I highly recommend one when installing the new boiler.

Cheers!