How many times per day/week should our water tank be heated from 55c to 60c?

HappyMJ

Dano2k wrote: »

I'm not convinced it will switch off as I've seen it above 65C and it doesn't switch off until the end of the timer... not the best system.
I'm going to run it for an hour tomorrow (after heat cycle) and find out.

Thanks for the tank info, didn't know it could stay that hot for that long! Beginning to make me think I could probably loose the afternoon cycle altogether. May trial it one day and keep an eye on temperatures.

Thanks all.

Dan

It really depends on how much hot water you use. 180 litres is a lot of water. I would think most people use about 20 litres of hot water each per day. My own tank is 120 litres with 2 immersion heaters. I only use the top one at the moment only heating about 40 litres of hot water each time I use it and I still have a little bit of hot water 36 hours after using the immersion heater so I only use the immersion every other day or as and when needed. As long as once a week you bring it all the way up to 60 there is little risk of legionella. Actually Wikipedia says every 3-5 weeks but the entry is unsourced so I'm not sure where that came from.

Dano2k

Ok, thanks very much.

Canucklehead

Hi.

Raise temperature to 60 degrees once every 24 hours.

And

Depending on your cylinder, the heat loss is 1.63Kwh/24hrs. (Kingspan).


GSR