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danmickread
Hi everyone,
i have just bought a house which has a y plan central heating system with an oil fired conventional boiler. The house was prob built in the 60's, I'm not sure how old the system is but my guess is it's been in a while. The boiler is Wallstar 12/14. The radiators take a while to heat up and don't seem that hot and takes a while to heat the house. There is a bypass valve which is right open and also the gate valve on the cylinder return is right open. Right now your all thinking just get a plumber in to sort it out!! As you all know so many plumbers don't even bother to balance systems properly and i would like to understand myself so I can set it up best I can so the system is working most efficiently. Firstly I will probably get the system flushed out.
Now I have done a lot of reading already regarding balancing radiators and the said 11 degree c drop across them but I'm struggling to fully understand how pump speed, boiler temperature, radiator temperatures, temperature drops across radiator and boiler, cylinder flow, bypass valve position, boiler kWt rating, radiator Btu's etc are all related and how you set them up. I appreciate that this is prob quite complex if you want it to be but there must be a fairly simple explanation and set of guidelines that can be followed in order to set a system up? Also in the future I would like to upgrade rads to double convector to heat the house better but obviously I don't want to increase the total btu output of all rads too much and then the boiler cant keep up. Also what temperature would the radiator have to be in order to achieve the btu output of a rad that is stated by the manufacturer?
Sorry for the long post but some help would be much appreciated.
Thanks
Dan.
i have just bought a house which has a y plan central heating system with an oil fired conventional boiler. The house was prob built in the 60's, I'm not sure how old the system is but my guess is it's been in a while. The boiler is Wallstar 12/14. The radiators take a while to heat up and don't seem that hot and takes a while to heat the house. There is a bypass valve which is right open and also the gate valve on the cylinder return is right open. Right now your all thinking just get a plumber in to sort it out!! As you all know so many plumbers don't even bother to balance systems properly and i would like to understand myself so I can set it up best I can so the system is working most efficiently. Firstly I will probably get the system flushed out.
Now I have done a lot of reading already regarding balancing radiators and the said 11 degree c drop across them but I'm struggling to fully understand how pump speed, boiler temperature, radiator temperatures, temperature drops across radiator and boiler, cylinder flow, bypass valve position, boiler kWt rating, radiator Btu's etc are all related and how you set them up. I appreciate that this is prob quite complex if you want it to be but there must be a fairly simple explanation and set of guidelines that can be followed in order to set a system up? Also in the future I would like to upgrade rads to double convector to heat the house better but obviously I don't want to increase the total btu output of all rads too much and then the boiler cant keep up. Also what temperature would the radiator have to be in order to achieve the btu output of a rad that is stated by the manufacturer?
Sorry for the long post but some help would be much appreciated.
Thanks
Dan.