Hi
I have add two new rads to an newly completed extension. To enable the chippy to complete the extension floor I put the 22mm flow and return in to feed the new rads leaving it ready to connect to the existing heating under the kitchen floor. The floor in the extension is now down and i have lifted the kitchen floor to connect the new 22mm to the existing heating only to find all the pipwork under the kitchen floor is 15mm. I dont want to take up all the floors to find 22mm to connect unless I have to. Can I connect the new 22mm to the existing 15mm to feed the new rads or will I get problems?
I have add two new rads to an newly completed extension. To enable the chippy to complete the extension floor I put the 22mm flow and return in to feed the new rads leaving it ready to connect to the existing heating under the kitchen floor. The floor in the extension is now down and i have lifted the kitchen floor to connect the new 22mm to the existing heating only to find all the pipwork under the kitchen floor is 15mm. I dont want to take up all the floors to find 22mm to connect unless I have to. Can I connect the new 22mm to the existing 15mm to feed the new rads or will I get problems?