Solid fuel central heating problems

[nehie]

Presumably if you have a twin coil the circuits are hydraulically separate, do you have 2 small tanks in the loft or where ever along with 1 large tank for the hot water?

Left out this bit of your question Nostrum: as far as I know, one of the coils is for the oil boiler and the other is shared by the two solid-fuel devices. I think there's only one small expansion tank in the attic, and a header tank. Can't be sure of that though. YOu can't get up there - the tank is in the way!

 

[diamondgas]

Is it a difficult task to get rid of an airlock? Have been swotting up on injector tees - I don't know if there's one in the system. I also don't know which radiator (if any) is gravity-fed because to find that out I'd presumably have to disable the pump, and I'm a bit afraid to... Should I? If I turn the pump off and turn the thermostat way up, to keep it off, will that tell me?

All it takes is a crest/dip in the pipework somewhere and air will trap stopping/slowing down the circulation. I'm assuming the pipework goes up and over then drops down to the cylinder, returning underfloor to the boiler position. Anywhere on that circuit is a potential air trap and/or sludge trap? Turning the pump off will only make things worse in my opinion!

Regards removing an airlock, it can prove nigh on impossible especially if it's in the return under the floor!!! If you don't have an injection tee fitted then it may be the lease expensive step to take in having one installed and seeing if that resolves the issue?

 

[hitch61]

It sounds like the install is to blame It would be nice to see how the two heat sources are are linked. Usually best done trough a dunsley nutrulizer or similar

 

[Lou]

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