Hi there
I was wondering if you could help me ?
I have read your comments about corrosion inside oil fired condensing boilers when the return temperature is low. I have a Grant Vortex System Boiler 15/26kW and I think that the leak that I have, below the boiler, could possibly be due to corrosion ?
I am struggling to understand how this particular corrosion happens ? I understand that it has nothing to do with the condensate nor the flue gases.
Would you be able to explain one again how this corrosion happens ? The system is fully dosed with Fernox Protector, in fact it has been overdosed so as to be sure that there is no system corrosion.
I have an UFH heating system on the ground floor - this has a self contained mixing manifold - the flow temperature is 50 deg C - the return temperature is 40 deg C once up to the operating temperature.
I also have another UFH system in the first floor - this also has a self contained mixing manifold - the flow temperature is 60 deg C - the return temperature is 50 deg C once up to the operating temperature.
There are also 2 conventional radiators on the system together with 2 heated towel rails which run at the flow temperature from the boiler. The system has been balanced.
Based on this I am confident that the return temperature is not below 40 deg C once the system is up to the operating temperature, nevertheless the boiler is leaking at the bottom ??
I look forward to hearing from you and thank you in advance.
I was wondering if you could help me ?
I have read your comments about corrosion inside oil fired condensing boilers when the return temperature is low. I have a Grant Vortex System Boiler 15/26kW and I think that the leak that I have, below the boiler, could possibly be due to corrosion ?
I am struggling to understand how this particular corrosion happens ? I understand that it has nothing to do with the condensate nor the flue gases.
Would you be able to explain one again how this corrosion happens ? The system is fully dosed with Fernox Protector, in fact it has been overdosed so as to be sure that there is no system corrosion.
I have an UFH heating system on the ground floor - this has a self contained mixing manifold - the flow temperature is 50 deg C - the return temperature is 40 deg C once up to the operating temperature.
I also have another UFH system in the first floor - this also has a self contained mixing manifold - the flow temperature is 60 deg C - the return temperature is 50 deg C once up to the operating temperature.
There are also 2 conventional radiators on the system together with 2 heated towel rails which run at the flow temperature from the boiler. The system has been balanced.
Based on this I am confident that the return temperature is not below 40 deg C once the system is up to the operating temperature, nevertheless the boiler is leaking at the bottom ??
I look forward to hearing from you and thank you in advance.