Hello and thanks for any help.
I have a Navien system boiler configured as S Plan.
Everything has been working fine for 2 years until the other day when the boiler no longer fires for DHW only.
CH works fine and the valve on the DHW circuit also operates correctly. I am still able to get...
Hello,
First time poster, many time reader.
I'm installing a new shower, concealed thermostatic variety. I have a brass wall mounted elbow with a female 1/2 inch thread into which the shower arm screws.
Looks like one of these...