ChatterBank1 min ago
part 2. combi boiler ch usage
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For more on marking an answer as the "Best Answer", please visit our FAQ.You may also be able to reduce the boiler temperature to get a more even heat to avoid wide fluctuations but I would suggest you resist the temption to keep changing the thermostat as it will need one or two degrees difference to operate. If you set it say at 21 C it will switch off at 22 C but only come back on at 20 C.
Set it at 21 C and after a couple of hours only make very minor changes a half a degree at a time to get a happy steady temperature to suit you. In very cold weather you may need it slightly higher and slightly lower when it's warmer or you are doing housework etc. Normal range would be 19 to 22 C but these can be different according to where the thermostat is situated and its accuracy.
The pins are not meant to keep turning the boiler on and off like this, it will make your problem worse. They are to set the times of day that you want the heating on or off such as at night.
The boiler should have a thermostat to control the water temperature which can be reduced if the radiators are on the large side and making the room too hot too quickly. Your thermostat should also be on an internal wall, about five feet high, away from internal corners and not near to the radiator. Most thermostats require three wires and an earth and have a accelerator heater. If the heater has failed or the wiring is not all there then the thermostat will only work at very wide temperatures.
They are quite cheap to replace but the radio controlled programable stat is worth having as once the sender unit is wired to your boiler you can use the thermostat anywhere, they take a bit of understanding to set up though.
Many thanks stanleyman. There's no other heat source in the room The thermostat in my biggest room on the 2nd floor conforms, i.e. inside wall, about 5' high, opposite wall to rad. It just seems a bit creaky. I will be careful about trying the setting like you say it so that I don't roast one half hour and freeze the next. It has been happening that if I set it at 21C it is OK for a bit, then goes off and seems never to come on again unless I manually alter it - probably to a too high setting Thanks too for the advice about the boiler pins. The radio controlled programmable stat sounds what is needed. The tiny kitchen next door - 1 small rad. - plus the tiny lobby - 1 rad.- both areas are too hot most of the time. Upstairs on the third floor the boiler is in a cupboard in the minute bathroom - 1 rad. which hardly gets hot - plus bedroom with 1 rad. which makes the room too hot most of the time. I feel the present situation is totally wasteful and anti environmental. Although I am insured, this is to for things going wrong so it looks as though |I have got to have an engineer aside from that for desired improvements.