Central heating water coming out of hot water tap in sink

[Aziz1]

Hi,

I bought a house about a year ago, and today was the first time I turned the central heating on. The central heating works fine. I also replaced the old radiator in the upstairs bedroom with a new one at the same time, I THINK I got the return and flow the right way.

Anyway, I am running the central heating now, and when I turn on the hot water tap in the sink, the water has a cloudy reddish tint to it, like dirty central heating water. the cold water is fine. How could this have happened. If I put the flow and return on the radiator in the wrong way, would it cause this problem?

I have a Worcester 28i Junior with a sealed heating system.

 

[kdoheating2011]

hi ,would'nt worry about flow or return
u could have problem with ur main heat ex split causing heating water into hot water side of heat ex

 

[oilboffin]

If you have a hot water tank the coil could have gone letting the heating water into the hot tank and down to hot taps need new cylinder

 

[Aziz1]

No hot water cylinder, all mains fed. Sounds like a heat exchanger problem after all... thanks both.