no ciculation in one zone of forced water heating system
The Taco pump is running, from there to check valve and up to ball valve is cool. All the other circuits are hot to the touch. I added another zone which required sweating of additional pipe to the problem circuit due to redesign. The ball valve was difficult to lever off on problem line. Everything went well during repiping, but when system fired up this one zone wouldn't circulate. The pumps running, and it's pumping chamber is hot, but no radiant heat eminating outlet side of pump, bolted on top of pump is check valve, it, and the copper pipe leading to ball valve are cool?