WW Production DIN 1988 200 / Below 60 degrees in large systems?

Good day.
The Drinking Water Ordinance Din 1988 200 states that systems with 2 units or more must operate with 60 degree hot water (also with modern fresh water stations).

However, clause 9.7.2.3 allegedly allows a way out for larger systems that want to operate below 60 degrees hot water (example hot water 55 degrees, circulation 50 degrees, multi-family house with 5 residential units).

Central drinking water heaters with high water exchange:

If during operation a
water exchange in the drinking water installation for hot drinking water within 3 days is ensured,
operating temperatures can be set to 50 °C. Operating temperatures < 50 °C are to be avoided. The operator must be informed during commissioning and instruction about the possible health risk (Legionella proliferation).

Does this mean that a large system (e.g. 5 residential units) may operate with e.g. 55 degree hot water, which ensures a hot water exchange within 3 days?
Is it sufficient here if all residents confirm this to each other?

Within the framework of energy-saving operation, generating hot water below 60 degrees makes sense.
(PS: A Legionella should not care whether the hot water is produced at 55 degrees or 60 degrees. This temperature range prevents spread, but not absolute killing. Also, the risk of contracting Legionella from a fresh water station is rather low if a regular hot water exchange is ensured.)

Are there any practical experiences here?

Thank you very much!

Operation of hot water storage between 45 and 50 degrees is common practice. Whether it is a drinking water storage tank, hygiene storage tank, or fresh water station.

Operation of hot water storage between 45 and 50 degrees is common practice. Whether drinking water storage, hygiene storage, or fresh water station.

However, the Drinking Water Ordinance DIN 1988 200 states something different!
Small systems (i.e., single-family houses) can operate below 60 degrees.
But large systems (from 2 units) must comply with this ordinance. So heating to 60 degrees.
However, there is supposedly a gray area, which under certain conditions also allows large systems (with circulation and over 3L) to operate below 60 degrees.
It may be common practice (more for single-family houses), but not for multi-family houses.

Hello. Why am I being banned? I have neither posted any advertisements nor anything else!

I have neither posted advertising nor anything else!

Was there a link? That is already enough. Sorry, in my answer I only referred to the single-family house.

But clause 9.7.2.3 supposedly allows a way out for larger systems that want to operate domestic hot water below 60 degrees (example hot water 55 degrees, circulation 50 degrees, multi-family house with 5 residential units) Central domestic water heaters with high water exchange: If during operation a water exchange in the domestic water installation for domestic hot water within 3 days is ensured, operating temperatures can be set to 50 °C. Operating temperatures below 50 °C are to be avoided. The operator must be informed about the possible health risk (legionella growth) during commissioning and instruction.

Yep. So-so. What is your plan or why do you ask?

I have only set DIN 1988 200. Without link etc.

Yes, I mean my multi-family house with 5 units! Here I want to produce hot water at less than 60 degrees, as (probably like you) energy is saved (buffer) and scaling is reduced. My plan is (if allowed under certain conditions) to produce my hot water at 55 degrees! And not at 60 degrees. That would mean lower buffer temperature, less scaling of heat exchanger, still sufficient hot water, and the residual risk of legionella is not increased!