Good morning everyone, I was hoping you could help settle a debate.
When choosing to insulate the cold water intake pipe on a HWH, is it necessary or recommended to insulate the pipe beyond the first elbow?
While I recognize there are reasons to insulate the cold water pipes (condensate, etc.) our area of concern is for thermosiphoning only.
Thanks in advance, everyone.
Take a clamp on temp probe like fluke or cooper - then heat the tank and tell us what happen? The only way to stop DHW thermosiphoning is to put in heat traps. I use a IR each building and its fun to see the heat leak. Most is with in 5 feet but I see 20 feet on large flat runs, the hoter water the more thermosiphoning happens.
I like to take it to where it enters the wall if near the water heater or 6 inches past the first downward elbow