You still don't appear to have answered as to what Glow Worm it is and it's size.
To be stated as working correctly you need to have a temp increase of 35C from the hot taps at a flow rate set by the MI's, which will depend on the size of combi.
If it meets this then it will appear to be working correctly.
To be stated as working correctly you need to have a temp increase of 35C from the hot taps at a flow rate set by the MI's, which will depend on the size of combi.
If it meets this then it will appear to be working correctly.