The bypass valves which connect both hot and cold lines together OPEN anytime the hot water at the valve falls less than 95F. Trying to get cold water with this valve open is not possible due to hot water line siphoning. Add a TLC-X2-115 controller solves this problem.
Answers & Comments
The bypass valves which connect both hot and cold lines together OPEN anytime the hot water at the valve falls less than 95F. Trying to get cold water with this valve open is not possible due to hot water line siphoning. Add a TLC-X2-115 controller solves this problem.
Yep! That is the problem with this type system!
To fix the problem run a third pipe from where the pump is back to tee into the cold input of the HW tank. Insulate this third line.
It will be more efficient as well.