Tmv on secondary return pipework

[sheff paul]

Whatever you do - do it to the Regs.

If there was a legionella outbreak - all fingers will be pointed at you.
The owner, developer, architect, builder and so on will plead ignorance.

Legionella can kill and you would be held accountable.

wash hand basins mate ,no showers =low risk..

 

[sheff paul]

The abandoned Energy Saving Trust Best Practice Specification recommends a maximum dead leg volume of 1.5 litres or 10m of 15mm copper pipe. Similar figures have been suggested in the USA (EPA, 2008). If a standard 1.7 litre/minute spray fitting and a maximum wait of 30 seconds is assumed this gives a maximum dead leg volume of 0.85 litres or 5.9m of 15mm pipe.

Cheers mate,if this is the rules I am well within it

 

[AWheating]

Tmv,s are normally point of use for a single fixture. Approx within a Meter of tap. You could have a blending valve at the cylinder to limit temp to 60.

 

[oz-plumber]

wash hand basins mate ,no showers =low risk..

It doesn't matter what the fixtures the SR feeds.

If you were intending to have circulating water at a temperature less than 60 C, as specified by architect, then you would be installing a system that would be susceptible to a Legionella out break - unless you had a UV filter installed into the system.

 

[sheff paul]

It doesn't matter what the fixtures the SR feeds.

If you were intending to have circulating water at a temperature less than 60 C, as specified by architect, then you would be installing a system that would be susceptible to a Legionella out break - unless you had a UV filter installed into the system.

if you had read the previous thread,the tmv is coming out so the sr will be at 60 c...job done