Hello,
Yes it can, it needs to be connected to the water supply pipe, before it enters the boiler/heater. It shouldn't be installed on the out hot water feed.
I would advise reading the items instructions (available on our website, just click on the product and go to specs).
I would also advise you to seek advise from a competent tradeperson to make sure you are choosing ans installing the correct and most suitable product for your particular installation.
Thanks for using Q&A. [DG]
Answered by: DGIFF
Date published: 2020-07-16