Hi,
Recently moved into a new build and I'm pretty certain there's a problem with the CH/HW that the installers are denying. It's a 'S Plan Plus' system - Ideal boiler with unvented cylinder, dual heating zones and frost thermostat for the boiler in the attached garage. I've had to replace a zone valve on another property recently so googled the **** out of S Plans and reckon I understand it all pretty well in terms of how the zone valves work, how they demand heat from the boiler and how the boiler commands the pump to run (not so sure about the last part to be honest).
So the situation - when the hot water is set to 'ON', the pump runs and the boiler fires up - even if the tank temperature is above the set value on the thermostat. The only thing I can see changing when the water is below the set value is that the zone valve for the HW opens. So what is happening is that the boiler is continuously running and when the hot water reaches the set temperature, the boiler is just heating the water going round the bypass loop as it has nowhere else to go. I did once get a 'L1' error on the boiler when the boiler was set to 'maximum' however that hasn't happened again since I set it to 'eco'. The temp on the boiler display is permanently at around 70-80C and the garage is hot.
I spoke to the builders and they sent round someone from the company that set up/installed the heating system and was told that this is how the system works and that the HW timer should be set so it comes on an off when hot water is required. They said that its normal for the pump and boiler to be running all the time the hot water is turned on. They are going to come round again today to explain the same thing. Problem is, they are 'experts' so if they say it's right then as far as the home builders are concerned that's the end of it. There are 11 similar properties on the road that seem to have the same issues although nobody else is aware of it - as far as they're concerned they have hot water so no problem.
Any advice?
Thanks,
Ted
Recently moved into a new build and I'm pretty certain there's a problem with the CH/HW that the installers are denying. It's a 'S Plan Plus' system - Ideal boiler with unvented cylinder, dual heating zones and frost thermostat for the boiler in the attached garage. I've had to replace a zone valve on another property recently so googled the **** out of S Plans and reckon I understand it all pretty well in terms of how the zone valves work, how they demand heat from the boiler and how the boiler commands the pump to run (not so sure about the last part to be honest).
So the situation - when the hot water is set to 'ON', the pump runs and the boiler fires up - even if the tank temperature is above the set value on the thermostat. The only thing I can see changing when the water is below the set value is that the zone valve for the HW opens. So what is happening is that the boiler is continuously running and when the hot water reaches the set temperature, the boiler is just heating the water going round the bypass loop as it has nowhere else to go. I did once get a 'L1' error on the boiler when the boiler was set to 'maximum' however that hasn't happened again since I set it to 'eco'. The temp on the boiler display is permanently at around 70-80C and the garage is hot.
I spoke to the builders and they sent round someone from the company that set up/installed the heating system and was told that this is how the system works and that the HW timer should be set so it comes on an off when hot water is required. They said that its normal for the pump and boiler to be running all the time the hot water is turned on. They are going to come round again today to explain the same thing. Problem is, they are 'experts' so if they say it's right then as far as the home builders are concerned that's the end of it. There are 11 similar properties on the road that seem to have the same issues although nobody else is aware of it - as far as they're concerned they have hot water so no problem.
Any advice?
Thanks,
Ted