A case of Bullshit baffling brains I fear (what a load of tosh!!)
If you mean Trianco bulls**t, then I agree, but taking my most recent example of a Eurotrader Premier for 125,000 Bthu, the original data sticker gave a 1.10 x 80EH nozzle at 125 psi. The revised sticker gave a 1.00 x 80EH at 105psi, which is exactly the same as the original sticker data for 100,000 Bthu. At the same time it was necessary to remove the air diffuser plate which was fitted behind the nozzle on the earlier Max burners. It was not mythoughts about the increased calorific value of the oil ( by the way, the extra quantity of oil to replace the sulphur is only .001%) but what I was told by Trianco. An earlier poster was also told this.A case of bulls**t baffling brains I fear (what a load of tosh!!)
If you mean Trianco bulls**t, then I agree, but taking my most recent example of a Eurotrader Premier for 125,000 Bthu, the original data sticker gave a 1.10 x 80EH nozzle at 125 psi. The revised sticker gave a 1.00 x 80EH at 105psi, which is exactly the same as the original sticker data for 100,000 Bthu. At the same time it was necessary to remove the air diffuser plate which was fitted behind the nozzle on the earlier Max burners. It was not mythoughts about the increased calorific value of the oil ( by the way, the extra quantity of oil to replace the sulphur is only .001%) but what I was told by Trianco. An earlier poster was also told this.A case of bulls**t baffling brains I fear (what a load of tosh!!)
If one goes back to basics, learnt many years ago, then a 1.00 gall nozzle at 105 psi on 28 sec oil will give a gross Bthu of 161,000 approx, so a nett efficiency of 90% would still exceed the stated 125,000.
LoL if you like, but it is obvious from the comments on this and other forums that Trianco got something very ,very wrong in their original design.
When you say the Eurostars soot up, is this in the boiler itself, or is it the photocell that mists over and the combustion head that gets very wet? The first time I visited, the combustion chamber was full of soot but since then yes the photocell mists and the head is a little wet, no nozzle drip though with good cut off. What else have you found causes this?Does you Eurostar have the large square baffles with a 25mm upstand or is it one of the older ones with an upstand of 75mm? The Eurostar 100/125 has threaded rod as upstand and I would estimate they are the 75mm apart ones.The reason I ask is that you say you have the Iona's which are the first model Eurostars with a large gap between the baffles, and not normally too much of a problem. Not sure about the gap on these without checking.If they are balanced flue(yes they are), make a small hole in the air tube and use your analyser to sample the combustion air and see if you have a leak in the flue.
If the Eurostar premier, then yes, check for flue leaks, but be prepared to use an angle grinder and open up the flue passes to about 20-25mm.
I have three sets of settings for them, so not much use passing them on. Did Trianco tell you about this or trial and error? I have heard another engineer mention this in the merchants and also a few years ago doing a requal course. When you say 3 sets of figures do you mean for different outputs or models? Any chance I could have them to compare?
My Eurostar Premier 100/125 was left with a 1.00 gall nozzle at 105psi. Aim for 10.5%-11% CO2. This is less than Trianco figure, but still keeps CO under 40ppm.
I visited the Eurostar 100/125 today and reset the oil pressure to 100 psi on a 1.1 x 80 EH nozzle, set the CO2 at 11%. The CO was around 15ppm which I thought was going well for this one. Left the air hose off because the idiot that installed it hacked a standard flue to fit a single skin wall, it was leaking gas' into the air hose where the hack saw had mangled the tube! Will be returning to fix that one at a later date if the boiler runs ok for a while now.
Also, if the burner has an air diffuser plate behind the nozzle, then remove it. Will try that one, thanks.
Good luck.
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