Piping question

JimmyJam

I am quoting a GB142 installation replacing a gravity boiler and need some assistance on piping.

Existing boiler has (2) 2" supplies and (2) 2" returns, now I do know the "near boiler" piping is wise to pipe in 3/4" to give the circulator something to pump against but just how do I tie into the supply and returns?

Option 1: Tee both supply pipes together and pipe 3/4" supply from GB142 into supply tee and the same with the return with balancing valves on each supply?

Option 2: Close (1) supply with respective return on each side with each having own circulating pump and "inject" into each loop with close spaced tees?

Heat loss at -18 is 65k and has 800 sq ft of radiation which is a perfect match for this boiler, plan on using Hydro-Solve 9100 and Protek 922 treatment.

Thanks for any help here!

Ted_9

options

I would go with option 1 but I'm not sure what you mean by option 2, I need visuals.

To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"