i believe above 55 degrees C is recomended to ensure legonella is killed
i know when i fitted the diesel fired central heating and hot water system
into my motorhome, the calorifier (small hot water cylinder with 2 heating
coils, one for engine heat other for boiler heat) had a thermostatic mixing
valve on the outelt that wont go down below 60 degrees, reason stated was
the legonella thing.
All a bit arbitrary really
Everytime my corgi man comes he hisses through his teeth and turns my
cylstat down to 60 from where we have it at 65..
If we leave it low at 60 the second person to have a bath or shower ends up
with only warm water as the boiler takes about 20 minutes to reheat the
cylinder.. If we have guests in the guest room and they are showering at
the same time it's even worse..
I rigged a thermocouple behind the Cylstat and one at the top of the
cylinder and another at the bottom.. Bottom of the tank rarely makes it
above 35/40, top gets to about 70 but behind the cylstat it's normally
about 50.. So what do the temperature marking mean and what about the
bacteria lurking at the bottom of the tank.. The 70 degree water when you
fill a bath is a bit hot and needs mixing but soon runs cooler and it takes
about between two to five minutes for the cylstat differential to click in
and start the boiler(depending on how recently the water was heated)
What the temperature on the cylstat is supposed to represent goodness know
but it doesn't seem to be the temperature of the cylinder at that point..
I've tried two cylstats and both exhibit the same effect.. One is
Satchwell and the other Landis & Gyr. Anyone know of one that is more
sensitive and is there a better place to mount it that at the suggested
position about a third of the way up the cylinder?
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.