Hi
Just a couple of questions, hope nobody minds as they may be a bit noddy i guess. System is a open vented Y plan system, CM927 wireless stat, Ideal Mexico Super 2 boiler (36kw), 14 rads. Stat is in living room which has the TRV removed. All other rads apart from the boiler circuit rad have TRV's.
I have read the FAQ on the 3 port valve too, but I am still confused - if I move the lever, should it start the boiler? Mine doesn't - not sure if thats a fault or correct operation?
When the heating is "on" (via CM927) the boiler occasionally fires only for very short bursts..some times as short as 3-5 seconds - the flame symbol would be showing, and the target temp is higher than the actual temp (often by a few degrees) so trying to heat the room. This is usually first thing in the morning for example, when house is coldest. When this happens, the CH pump is running, or is by the time i get upstairs to check.
Could it be that the CM927 is calling for heat, and powering the pump, but the boiler is "satisfied" by the boiler stat (which is turned to 4 out of 6)?
The system operates pretty well and keeps a consistent temp, im just concerned that the boiler firing for such a short period is adding wear and tear and is wasting gas (it cant possibly be heating anything can it, in such a short period?).
Any opinions very much appreciated.
Thanks!!
EDIT: CM927 is configured to factory setting.
EDIT2: Had a RGI around recently to service it though he talked me out of having the chamber dismantled and swept. Gas readings all normal. He said boiler was working fine, to keep it and just forget about it. Took the mick a bit that i was bothering to get it serviced, said it didn't need an annual service.
Just a couple of questions, hope nobody minds as they may be a bit noddy i guess. System is a open vented Y plan system, CM927 wireless stat, Ideal Mexico Super 2 boiler (36kw), 14 rads. Stat is in living room which has the TRV removed. All other rads apart from the boiler circuit rad have TRV's.
I have read the FAQ on the 3 port valve too, but I am still confused - if I move the lever, should it start the boiler? Mine doesn't - not sure if thats a fault or correct operation?
When the heating is "on" (via CM927) the boiler occasionally fires only for very short bursts..some times as short as 3-5 seconds - the flame symbol would be showing, and the target temp is higher than the actual temp (often by a few degrees) so trying to heat the room. This is usually first thing in the morning for example, when house is coldest. When this happens, the CH pump is running, or is by the time i get upstairs to check.
Could it be that the CM927 is calling for heat, and powering the pump, but the boiler is "satisfied" by the boiler stat (which is turned to 4 out of 6)?
The system operates pretty well and keeps a consistent temp, im just concerned that the boiler firing for such a short period is adding wear and tear and is wasting gas (it cant possibly be heating anything can it, in such a short period?).
Any opinions very much appreciated.
Thanks!!
EDIT: CM927 is configured to factory setting.
EDIT2: Had a RGI around recently to service it though he talked me out of having the chamber dismantled and swept. Gas readings all normal. He said boiler was working fine, to keep it and just forget about it. Took the mick a bit that i was bothering to get it serviced, said it didn't need an annual service.