Should you leave the oven door slightly wedged open when drying out rusks?

I have dried the last 3 batches of rusks made in the thermofan oven and have not had the door open. The rusks dried perfectly and quickly. At the same time i had my warming drawer on the top level, which is quite hot, and placed a tray of undried rusks in there as well. When the thermofan rusks were dry, i had to turn the warming drawer rusks over as they were dry-ish on top and moist underneath....so they went into the thermofan oven as well.