reply to your q/ water not comeing through hot tap when cold main to hot system shut off but when filling through filling loop water light brown and boiler emptys strange isnt it as if draining through hot tap ?
have just fitted main30 condencing boiler not connected to gas or electric yet but boiler is filling through the cold water mains pipe cnnected to boiler for hot water when filling loop connected through heating return pipe is not connected any ideas
