HELP !! Initial Kiln Temp vs RH for DH4000 (Nyle L200)

[DR Buck]

I am using a DH4000 with Temp and RH displays.

If my drying schedule calls for a starting temperature of 90° and a relative humidity of 80% and the outside air temperature is 98°, how can I get the RH up to 80% if the over-temperature vents keep kicking in to control the top temperature to 90°?   

Do I need to raise the starting temperature and RH above the recommended starting points?   Looking at the drying rate index (DRI) in the Nyle manual it shows that I'm starting at a 0.2 DRI.   Do I just use the chart to find combination of a higher temp that is above ambient air and a RH that produces the same 0.2 DRI ?   According to the chart the next 0.2 DRI above my ambient air is 105° and 93% RH

My lumber going in is an average of 30% MC

[Don_Lewis]

Set the temperature at 10F higher that the highest outdoor temperature and use the ssme humidity setting

[David Freed]

   When the outside temp is that warm I just keep air drying. Depending on the type of lumber I either leave it out of the kiln or put it in with one or more fans running to speed up the air drying.    David

[scsmith42]

I'll do what Don suggests and watch my daily drying rate.  If the MC%'s on the test boards start dropping too quickly, I'll crank the RH% to a higher level to bring it back within spec.

Scott