Ecthelion

But most people are not smoking as many as they like. Use is largely limited to a small portion of days in the year, and a small portion of those days. when clean burn technology and design is factored in, it is absolutely fine to use wood burners appropriately and in appropriate settings.

Clean burn technology in modern wood burners resolves the particulate issue. there should be grants for people to have old burners replaced, and a time limit.

Thanks. I don’t think it’s possible to decrease pump speed. It was already on the lowest setting.

I switched dip switch 6 to off to take it from minimum to maximum. I think that increases the pump speed which would increase the volume? for the differential between flow and return, would that be a parameter setting or would additional volume make the difference? Normally it’s about 4 or 5 degrees but as you say should be higher.

I got in this morning and it was set to minimum and also frost protection set to off. I have set it to max and left frost protection as it was for now.

I’ll have a look into this in the morning. Thank you.

Interesting, thank you. The difference I get tends to me about 5 degrees. I wonder if mine is at level 2 or 1. After a frost cycle in very cold temps, I find the flow temp struggles to get back up and will just about hit 40 before the frost cycle kicks in again and it has to start again.

Indeed. Possibly we just had a very damp cold spell.

I’ll need to say that to Grant.

Not accordingly to Grant or the installer. Hard to see how you could reach that conclusion on the information provided.

I do actually think it should have a volumiser retrofitted and I’m in discussions with Grant for making sure that’s done before next winter. I challenged them about the failure to reach 21 in very low temps. It’s supposed to deliver 22 at -5.4 degrees outside but it doesn’t. I found in their paperwork that it should have either a LLH or a volumiser, but my install seemingly doesn’t and their grade 1 installer had deemed it not needed due to the heat loss calculations and type of property.

Yes I know, I just couldn’t be bothered to correct it. Do you mean the weather comp curve parameters? Pretty sure those are ok. It’s set to flow 50 degrees at 0.

They maybe don’t know how to use them properly as the heat output is adjustable.

9.2 KW. we do also get power cuts. 3 or 4 a year. Not often longer than a day. And yes, -10 is rare, probably 3 or 4 nights a year.

Of course it was.

It’s a suspended timber floor. no, I don’t accept that science.

We also have our flue acting as a radiator, heating the upstairs where it goes through the hall. It is behind some louvred panels.

Only a few years ago the same people saying wood burners were great. No, I don’t believe the “science” personally. ancient poorly fitted wood burners are obviously not going to have the same consideration as modern state of the art burners, well installed. And I don’t believe the claims that started this discussion that wood burners account for more emissions than transport and industry. That’s just nonsense; nobody should take that at face value, surely?

Yes I do. I don’t know, I would need to dig that info out.

We have a similar arrangement with down stairs. 3 sets of double doors. And the heat output of the stove is itself adjustable. I don’t buy any environmental argument against modern wood burners. It’s more a case of an agenda towards heat pumps and a dislike of other people having nice things.

Not at -10.

Very impressive. I’ve never seen known an ASHP to be capable of that.

10 minutes an hour with the heating off matters at low temps, and then it has to get back up to flow temp, so it’s not just 10 minutes per hour, it is more like 20, which is a third of the system’s capability.

That’s excellent, must be a really good house. i didn’t say that my ASHP had us at 17.5. More like 19 when we had 3 days below zero and nights at minus 10. But 19 is not acceptable to us, and the wood burner was used. All ASHPs frost cycle and if the weather is cold enough for long enough there is a limit to what they can do.

Show me an ASHP that doesn’t doesn’t defrost cycle in very cold weather. A few days a year it struggles to maintain 21 and will manage 19 if the OAT temp has been low enough for long enough. I’d say I use my wood burner about 20 days per year and maybe 10 it’s more necessary than the other 10.