Hi,
I've looked through old threads on similar questions, however i was hoping for advice regarding our house project.
When i've read threads before when people have asked similar questions - some people say that the Veismann Stored combi is a great boiler and would be adequate, however most comments point to a pressurised cylinder system being the only way, but without properly explaining why?
We have a three bed detached property which we're currently renovating and increasing in size, adding a three storey extension to the rear. The floor slab in the existing house area is currently removed and we plan to add UFH to the existing and also to the new extension ground floor, with radiators upstairs throughout.
Floor area in total when finished will be approx 200m2 - 85m2 Grd Floor, 85m2 First Floor and 30m2 second floor bedroom.
4 bed, 1 bathroom with bath and shower, 1 ensuite with bath and shower, 1 guest bedroom with ensuite shower, wc with wash hand basin downstairs, kitchen tap.
I've always lived with combo boilers, but this property is set to have many more showers etc.
We will be replacing the incoming mains at the road with a new plastic pipe, however the current water pressure from the existing lead supply is just over 8 bar which is very high. We will have the water board adjust this down in advance of the installation.
I know that most people would look to a pressurised cylinder system for this type of project, however i really want to go for a very large combi store. I like the idea of heating what you need (apart from the small stored capacity) and don't really want to go down the route of pressurised cylinder. I'm also conscious that when a cylinder is empty the heat up time needs to be considered, where that is no problem with a combi.
For 99% of the time it would be 1x shower being used and potentially a kitchen tap. I believe also (unless i'm mistaken) that the largest Veismann could cope with that in addition to a guest shower being used also at the same time?
I've looked a the Veismann 222-F combo store which has a 100L storage capacity in addition to the on demand of the combi aspect too. Worcester do a very large one too - the 550 cdi stored combi, but has a smaller stored capacity.
My questions really is - i understand the demands of the 3x showers, plus a kitchen tap, plus possibly a wash hand basin could be required all at the same time, but the likelihood of that ever happening seems to me to be so small that it doesn't seem to be worth the larger cylinder system. Worst case scenario for us would be 1x shower being used, plus a guest staying using a shower and then a kitchen tap - although this again would be fairly infrequent and could be managed.
Any advice or opinions would be most appreciated. If you could elaborate on why a pressurised cylinder system is the only option (if that's your opinion) that would be most helpful.
Thanks for your time
Tom
I've looked through old threads on similar questions, however i was hoping for advice regarding our house project.
When i've read threads before when people have asked similar questions - some people say that the Veismann Stored combi is a great boiler and would be adequate, however most comments point to a pressurised cylinder system being the only way, but without properly explaining why?
We have a three bed detached property which we're currently renovating and increasing in size, adding a three storey extension to the rear. The floor slab in the existing house area is currently removed and we plan to add UFH to the existing and also to the new extension ground floor, with radiators upstairs throughout.
Floor area in total when finished will be approx 200m2 - 85m2 Grd Floor, 85m2 First Floor and 30m2 second floor bedroom.
4 bed, 1 bathroom with bath and shower, 1 ensuite with bath and shower, 1 guest bedroom with ensuite shower, wc with wash hand basin downstairs, kitchen tap.
I've always lived with combo boilers, but this property is set to have many more showers etc.
We will be replacing the incoming mains at the road with a new plastic pipe, however the current water pressure from the existing lead supply is just over 8 bar which is very high. We will have the water board adjust this down in advance of the installation.
I know that most people would look to a pressurised cylinder system for this type of project, however i really want to go for a very large combi store. I like the idea of heating what you need (apart from the small stored capacity) and don't really want to go down the route of pressurised cylinder. I'm also conscious that when a cylinder is empty the heat up time needs to be considered, where that is no problem with a combi.
For 99% of the time it would be 1x shower being used and potentially a kitchen tap. I believe also (unless i'm mistaken) that the largest Veismann could cope with that in addition to a guest shower being used also at the same time?
I've looked a the Veismann 222-F combo store which has a 100L storage capacity in addition to the on demand of the combi aspect too. Worcester do a very large one too - the 550 cdi stored combi, but has a smaller stored capacity.
My questions really is - i understand the demands of the 3x showers, plus a kitchen tap, plus possibly a wash hand basin could be required all at the same time, but the likelihood of that ever happening seems to me to be so small that it doesn't seem to be worth the larger cylinder system. Worst case scenario for us would be 1x shower being used, plus a guest staying using a shower and then a kitchen tap - although this again would be fairly infrequent and could be managed.
Any advice or opinions would be most appreciated. If you could elaborate on why a pressurised cylinder system is the only option (if that's your opinion) that would be most helpful.
Thanks for your time
Tom
