J
Joe Drakeford
Hi everyone
I have an oil fired boiler in sealed system supplying underfloor heating and a megaflow hot water cylinder, the system is sealed and controlled by 2 motorised valves. The underfloor heating manifold is from IHS and the temperature is controlled / reduced here by a temp / flow control valve, not a mixing valve. I usually run the underfloor at approx 40 deg C, but when I turned up the temp to 50 deg C, I could not achieve this, firstly I thought it was a problem with temperature control valve at the manifold, removed this nothing wrong. I then fitted a clamp on temp gauge at the boiler outlet, I get around 50 deg C with the boiler turned up to the mid position on the dial (it cuts out at this setting after a while), full up and it eventually reach 60 deg C, but after about half an hour or so it didn't cut out. According to the manual it operates between 55 and 82 deg C if I remember right.
Oil nozzle has been changed and combustion has been checked with flue gas analyser.
I wondered if the thermostat was faulty but it seems like the boiler is running for fairly long periods of time, would have suspected the boiler to cut out sooner if the stat was stopping the boiler at a lower temp??
Anybodies input would be appreciated
Regards, Joe
I have an oil fired boiler in sealed system supplying underfloor heating and a megaflow hot water cylinder, the system is sealed and controlled by 2 motorised valves. The underfloor heating manifold is from IHS and the temperature is controlled / reduced here by a temp / flow control valve, not a mixing valve. I usually run the underfloor at approx 40 deg C, but when I turned up the temp to 50 deg C, I could not achieve this, firstly I thought it was a problem with temperature control valve at the manifold, removed this nothing wrong. I then fitted a clamp on temp gauge at the boiler outlet, I get around 50 deg C with the boiler turned up to the mid position on the dial (it cuts out at this setting after a while), full up and it eventually reach 60 deg C, but after about half an hour or so it didn't cut out. According to the manual it operates between 55 and 82 deg C if I remember right.
Oil nozzle has been changed and combustion has been checked with flue gas analyser.
I wondered if the thermostat was faulty but it seems like the boiler is running for fairly long periods of time, would have suspected the boiler to cut out sooner if the stat was stopping the boiler at a lower temp??
Anybodies input would be appreciated
Regards, Joe