Which 50kW boiler?
- Thread starter bobby62
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If you m,ust have a single boiler look at the Atag Q Range.
Otherwise I would recommend two boilers linked together.
As Tony asked - are you sure you need 50kW?
Otherwise I would recommend two boilers linked together.
As Tony asked - are you sure you need 50kW?
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Do it with hot water priority and you can reduce cylinder capacity.
Even better would be to spread the water load across two cylinders - one to 3 bathrooms.
Even better would be to spread the water load across two cylinders - one to 3 bathrooms.
There's no space to link two together or separate them in other areas of the house - it needs to be one really.
Have you used the ACV tank-in-tank cylinders before, would you recommend them over a 'normal' cylinder?
PS there are some dustbin-lid size shower heads in here and I don't want to take any chances!
IN that case use the ACV. but I would reconsider hot water priority.
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ACV tank In tank are very good, personally I think your better with maybe a rinnai or Andrews type water heter and then a smaller heating boiler.
As for boilers broag Quinta, Buderus GB162, Vaillant 46/65, strebel (I have more issues with ATAG than strebel), ideal IMax, MHS.
Most of these boilers will ask for commercial installers, that's why the domestic lads will shout for 2 smaller boilers.
As for boilers broag Quinta, Buderus GB162, Vaillant 46/65, strebel (I have more issues with ATAG than strebel), ideal IMax, MHS.
Most of these boilers will ask for commercial installers, that's why the domestic lads will shout for 2 smaller boilers.
Atag Q51S. System boiler.
Sorted.
Don't think you will have 31 radiators though.
My guess is you don't need 50kW.
Sorted.
Don't think you will have 31 radiators though.
My guess is you don't need 50kW.
Have you done a whole house heatloss calculation?
How many people live there? Thats what creates a demand for hot water!
Rule of thumb 50 li plus 50 li per person of stored hot water.
Normally a 2 kW allowance on the boiler size for hot water heating in a typical domestic environment!
Tony
How many people live there? Thats what creates a demand for hot water!
Rule of thumb 50 li plus 50 li per person of stored hot water.
Normally a 2 kW allowance on the boiler size for hot water heating in a typical domestic environment!
Tony
There are in fact 36 radiators and 7 towel rails. I have carried out a heat loss calc and made an allowance of 6kW for DHW
There are 5 people living there, but 6 bedrooms (double beds), so worst case is 12 number people. It would be unusual that many people will be occupying the house but worst case scenarios need to be catered for (as always)
In that case I would expect heat loss to be close to 36 kW based on our easy assessment of 1 kW per rad.
With five people a 300 li cylinder would normally suffice.
Visitors dont always use water at same time and plenty of time during the day to reheat!
Dont forgt the CH only needs the calculated power when its -1° C outside! Thats only a few days a year!
Over sizing a boiler is very inefficient and causes on/off cycling because most boilers only have a turn down ratio of 3:1
Tony
With five people a 300 li cylinder would normally suffice.
Visitors dont always use water at same time and plenty of time during the day to reheat!
Dont forgt the CH only needs the calculated power when its -1° C outside! Thats only a few days a year!
Over sizing a boiler is very inefficient and causes on/off cycling because most boilers only have a turn down ratio of 3:1
Tony
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