urgent help needed - please respond

egar

day 2 of my new combi boiler install starts tomorrow and i've just had a sneaky peak at the manual and it says max water temperature 56 deg celsius - we like our water boiling and to add cold - what do I do - have no thermometer to measure how hat 56 deg is - husband will go mental........

freddykrueger

56 degrees celsius is hot enough - can you imagine boiling your kettle and then putting your hand in that? I don't think you really mean that you like your water boiling - put it this way I would not get in a bath that is 56 degrees celsius!

Cardew

http://forums.moneysavingexpert.com/showthread.html?t=942933

Premier_2

If this is just the temperature of the hot water to the taps, you should be ok. It could be to do with modern legislation.

Typically in the workplace, the minimum temperature of stored water is recommended to be at least 60degC to avoid the possibility of legionella. (I guess with a combi you don't have a hot water tank) Water at the taps should be a minimum of 50degC. achievable within 1 minute of flushing.(Temperatures exceeding 60degC at the taps pose a significant scalding risk.)

But some places such as hospitals & care homes, hot water must not exceed 43degC to avoid the possibilty of scalding. (43degC is still hot to put your hand into) This however is achieved by the use of thermostatically controlled mixer valves rather than traditional hot taps.

56degC for heating purposes does seem quite low to me though. Is it possible the combi provides water at a higher temperature for heating compared to domestic hot water?

egar

It says on the manual domestic hot water, Max - Min Temperature of water for domestic use 56 - 36 deg celsius - what do I do?

Canucklehead

Good evening: More info from the IPHE here and here. This boiler has max. CH temperature of 82 C.

To the OP: Any reason why you opted for a Band B boiler instead of the more energy efficient Band A? The DHW max. temperature shouldn't be an issue. The combi is an instaneous water heater i.e. not stored hot water. Do you have a thermostatic shower mixer?

HTH

Canucklehead

egar

Hi Canucklehead - this is the combi they told me would be best - there is only hubby and I in the house - no chance of kiddies I'm afraid. I don't know what the difference means with the CH temp and the water temp - all I know is I'm in tears worrying after months of indecision I've botched it up - sorry - girlie here, hopefully overreacting.............

egar

Oh - sorry - see - all in a fuddle - just an electric shower which will stay.

Premier_2

egar wrote: »

Hi Canucklehead - this is the combi they told me would be best - there is only hubby and I in the house - no chance of kiddies I'm afraid. I don't know what the difference means with the CH temp and the water temp - all I know is I'm in tears worrying after months of indecision I've botched it up - sorry - girlie here, hopefully overreacting.............

CH temp = temperature of water for Central Heating system. Canucklehead says this is 82degC max which is more than adequate.

water temp (DHW) = temp of water to be supplied to taps. (Domestic Hot Water) - you say 56degC

Cardew

http://www.ariston.co.uk/uploads/doc47ecbe74836ed.pdf

Page 7 gives full technical data.