Hot water coming from pipe outside house

6541

Folks, I need help. Excuse the typing I am on a tablet. Anyway we have hot water leaking intermittently from what looks like an overflow pipe outside in the eve of the house. So when the stove gets up to tempature we loose a load of hot water. This is going on ages and its doing my nut ! Thanks folks.

Walter Becket

This is bad for your heating systems health don't allow it to continue. In the attic there is a small water tank that is over flowing, When the water is coming go to the attic and check to see which tank is over flowing. There are a few possible causes.
1. The ball cock is set too heigh the water expands when heated so the water level when cold should be less than 1/2 way up the tank so that when hot the level doesn't reach the overflow outlet. To fix this bend down the arm, be careful I broke them more than once so make sure the mains water is off first.
2. The ballcock is letting past water all the time. Fit a new one.
3. This is very unlikely but a possibility. The coil in your copper cylinder has a leak allowing demostic hot water to enter the heating system. This is only possible if the heating system header tank overflow level is lower than the demostic cold water tank overflow level.

K.Flyer

You may also have a problem called "pitching".
This is where the water in the heating system is being circulated through the small feed and expansion tank in your attic. Next time the system is running take a look in the attic and see if any water is coming out of the pipe that hangs over small tank.

6541

Thanks folks

2forjoy

Let us know what the problem was ,and I woud agree with above it might be smallwater tank