Here's some useful content related to BS 8558 PDF and hot topics surrounding thermostatic mixing valves:

Let’s address the elephant in the room. You searched for "pdf hot" because you hoped to find a free file. Here is why that is a terrible idea:

: Includes informative annexes (specifically Annex C) for pipe sizing calculations originally found in BS 6700, helping to prevent oversizing and subsequent stagnation.

I cannot provide a direct PDF download or a "hot" link to the file, as that would violate copyright laws and potentially expose you to security risks. Please obtain the standard legally from BSI.

BS 8558 sets mandatory protocols for when a system must be flushed or disinfected: BS 8558:2015 - TC | 30 Sep 2015 - BSI Knowledge