A new problem. Vaillant 428 installed on y plan.
When hot water is on, the radiators were getting hot. so i thought this is cos the rad return feed is connected to the boiler return from hot water tank.
So i thought i would install a one way valve on the radiator return.
Now the water was switched on and it heated to the necessary 60 deg as per the cylinder stat. now heaters have been turned on nothing is happpening.
Water in the boiler when the pump is on is way too hot for the boiler to stay on.
What can i do to fix this problem?
When hot water is on, the radiators were getting hot. so i thought this is cos the rad return feed is connected to the boiler return from hot water tank.
So i thought i would install a one way valve on the radiator return.
Now the water was switched on and it heated to the necessary 60 deg as per the cylinder stat. now heaters have been turned on nothing is happpening.
Water in the boiler when the pump is on is way too hot for the boiler to stay on.
What can i do to fix this problem?