Thanks for the reply.
I have previously closed all of the other rads off, and yes the hot water spur was also closed.
There is a bypass, as can be seen here:
Not sure on the brand of the boiler, will check later.
I have previously closed all of the other rads off, and yes the hot water spur was also closed.
There is a bypass, as can be seen here:
Not sure on the brand of the boiler, will check later.