Posted by Pete Cordell on 03/01/2023 06:43:33:
The setting you are changing i think are the Elevation settings for the mixture
Google Diesel Heater Elevation Settings, then goto images for some charts
Different pumps and *kw heaters require different settings
Most pumps seem to be 0.22ml
‘Fraid you are out by an order of magnitude!
It seems to be accepted that these heaters lose about 600W through the exhaust. That, I think, is the reported recoverable heat which pertains to a “5kW” heater at full power (so would be somewhat less at reduced output).
Even the lesser amongst us should be able to work out the available energy in the fuel at 0.8Hz pump rate.
Crazy to weaken the combustion mixture by so much – thereby losing a greater amount of energy with the excess exhaust gases. 1.4Hz to 0.8Hz is in excess of a 40% reduction in fuel – with likely less than a 5% reduction in combustion air? Someone, I think, needs to realise these settings are not just arbitrary figures grabbed out of thin air.
These heaters (or many of them) are unlikely to be CE approved – or why would Trading Standards be confiscating (or whatever they do) so many units at the point of importation, recently?
Plot does not thicken, but the truth will come out as official (not hearsay or conspirational), now that the authorities have taken some long-awaited action.