Phil May wrote:I hope soon. I have been doing some research and have decided to go with 11/2" primary loop. The 11/4" was right at max capacity and I want to be able to get all it has when I need it. where is a good place to get a 11/2" flow check and a 11/2" air scoop. Changing the size means I am going to have to buy some new stuff. I am still planning on using the 2 11/4" returns. With the bigger pipe they should balance better. Has anyone ever had problems with the last zones on the primary loop not getting hot enough water? I am a little concerned about this. I am going to put my biggest load last in the loop (60k btu shop with radiant heat) if the shop is a little colder it would be better than the house. the total heat load calculated to 181,000 btu. Plus I am going to add a couple taps with plugged valves for any future brain farts that might occur.
I have had good luck ordering from pexsupply.com. The prices seem good, fast shipping, and returns are easy. One of my coworkers got the wrong part from them twice but I've never had it happen to me.