I have read the manual many times and have a reasonable understanding
of the function of the controls. What is not immediately apparent to a user
such as myself, is how the controls and hardware interact to affect W/M
delivery.
In this case, with the small FAV restrictor flow did track IDC. But when
I changed to the larger restrictor it did not, although flow was well short
of 95% IDC. I expected that increasing the GAIN would have the effect
shown in the graph only this did not happen.
After checking my logs I can see that installing the larger restrictor did not
increase W/M delivery at higher IDC. But did increase delivery at lower IDC,
and I conclude that flow is now being controlled by the size of the nozzles
rather than by changes in IDC.
As you say, and no doubt it is obvious to experienced users, increasing the
nozzle size is the next step. I am still learning about these things
Cheers... jondee86