Viessmann Vitodens 100-W Combi Boiler B1KC

Joined
12 Jun 2019
Messages
3
Reaction score
0
Country
Portugal
Hello all!
I've just got a new Combi boiler installed and would like to clarify two things (I have heating off atm and DHW set to 50ºC (which is default).

- While using hot tap water, display shows it goes to around 64ºC. Shouldn't it be around 50 as per setting?

- In DHW, does it matter if water goes above 54 (or whatnot) in order to render condensate heat inutilised? Or does condensation heat-usage only applies to heating?

Regards and thank you!
 
Sponsored Links
The display on the boiler shows the flow temp of the boiler water, not the tap water. To output hot water at 50 degrees, the boiler will go higher than 50 especially at first when it has to heat up the heat exchanger surfaces. If you’re worried about achieving max efficiency you could turn down the DHW temp a couple of degrees but it probably won’t make much of A difference to your overall gas usage in reality.
 
Sponsored Links
The display on the boiler shows the flow temp of the boiler water, not the tap water. To output hot water at 50 degrees, the boiler will go higher than 50 especially at first when it has to heat up the heat exchanger surfaces. If you’re worried about achieving max efficiency you could turn down the DHW temp a couple of degrees but it probably won’t make much of A difference to your overall gas usage in reality.
Thank you for a clear, concise answer!
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Back
Top