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Hi All,
I am looking for some advice around a dual boiler setup for a property we moved into in November. The property is part bungalow, part two storey, majority of the living is on the second floor, its around 3,200 square feet in size and 5 bedrooms, fully detatched. there are probably 20-25 radiators in the property. Part of the property was build in 1960 and extended upto around 2005. EPC is rating is C. The property has lots of very large floor to ceiling windows however, 2 sets of bifold doors, so is very open, its also rather open plan.
I have been in two parts of the accessible loft and the insulaiton was not great - id guess at 100mm - i have since topped all of this up and plan to do more.
The boiler setup is attached - they are 2 Greenstar 24RI boilers running what I beleive to be a loss header? in a lead and lag setup?
Boiler 1 was set to 65 degrees and boiler 2 was set to 50 degrees. I did some tinkering and research and gemini AI told me that running them at these temps was daft - as the water would mix in the header and boiler 1 would have to work harder to esentially heat boiler 2 - so suggested increasing to 58-60 degrees on boiler 2.
This has obviously however increased my costs I think, I have been tinkering daily so unsure by how much.
I have the thermostat in the coldest part of the house simply set to come on at 6:30 am until 8:00am at 13 degrees - this means everywhere else is probably 18 degrees. Hot water comes on for 30 minutes in the morning and 45 minutes in the afternoon.
this also comes on in the evening at 18:00 and goes off at 20:15. with the setup of boiler 1 and 2 at 65/50 this was costing me around £6 per day - which was acceptable. After my tinkering however this has gone up to about £9 per day, for no benefit?
is this because I am using a blast type scenario instead of low and slow?
what is the best approach that i take on this system? I cant lower the flow temp on boiler 1 less than 65 due to having a hot water cylinder?
Both boilers appear to fire together rather often which means im running a 48KW system at full whack, would i be better going back to the older setup of 65/50 which seems to go against logic.
Radiators are all set to optimised for the rooms, ive done all of that. we also have a multi fuel stove in the main room we use - so its not essential every room is on during the day, however when we have people over, and sometimes we both work from home, we need other rooms atleast comfortable.
any advice would be appreciated.
I am looking for some advice around a dual boiler setup for a property we moved into in November. The property is part bungalow, part two storey, majority of the living is on the second floor, its around 3,200 square feet in size and 5 bedrooms, fully detatched. there are probably 20-25 radiators in the property. Part of the property was build in 1960 and extended upto around 2005. EPC is rating is C. The property has lots of very large floor to ceiling windows however, 2 sets of bifold doors, so is very open, its also rather open plan.
I have been in two parts of the accessible loft and the insulaiton was not great - id guess at 100mm - i have since topped all of this up and plan to do more.
The boiler setup is attached - they are 2 Greenstar 24RI boilers running what I beleive to be a loss header? in a lead and lag setup?
Boiler 1 was set to 65 degrees and boiler 2 was set to 50 degrees. I did some tinkering and research and gemini AI told me that running them at these temps was daft - as the water would mix in the header and boiler 1 would have to work harder to esentially heat boiler 2 - so suggested increasing to 58-60 degrees on boiler 2.
This has obviously however increased my costs I think, I have been tinkering daily so unsure by how much.
I have the thermostat in the coldest part of the house simply set to come on at 6:30 am until 8:00am at 13 degrees - this means everywhere else is probably 18 degrees. Hot water comes on for 30 minutes in the morning and 45 minutes in the afternoon.
this also comes on in the evening at 18:00 and goes off at 20:15. with the setup of boiler 1 and 2 at 65/50 this was costing me around £6 per day - which was acceptable. After my tinkering however this has gone up to about £9 per day, for no benefit?
is this because I am using a blast type scenario instead of low and slow?
what is the best approach that i take on this system? I cant lower the flow temp on boiler 1 less than 65 due to having a hot water cylinder?
Both boilers appear to fire together rather often which means im running a 48KW system at full whack, would i be better going back to the older setup of 65/50 which seems to go against logic.
Radiators are all set to optimised for the rooms, ive done all of that. we also have a multi fuel stove in the main room we use - so its not essential every room is on during the day, however when we have people over, and sometimes we both work from home, we need other rooms atleast comfortable.
any advice would be appreciated.
