The manual posted refers to Air forks AND Coil forks. As for this page:
your fork is Coil Spring / Hydraulic Open Bath with Air Pressure preload adjuster.
The table present at the page 3 of the mentioned manual refers specifically to Travel-Adjustment-equipped suspensions, which doesn't seem to be your case. Anyway, the pressure recommended for the Air Preload system, in this table, ranges from 15 PSI to 43 PSI (27 psi for your weight, as I understood from your question).
The table at page 6 of the manual refers to adjusting the SAG (how much the fork sinks under rider's weight while in normal riding position) via air pressure, suggesting an initial value of 15 PSI, but implying that rider's preference should determine the ideal setting.
These forks which mix open bath, coil spring and air-pressure preload adjustment on the same side of the fork (I have a similar one, a 2004 Marzocchi Drop-Off- II, which I run with 0 PSI otherwise it is too stiff for my taste) tend to need relatively small pressures, since the pressure is only a fine-tuning. That is different from a air-only-spring, where you need a much higher pressure since it is air alone that conteracts rider's weight and bumps.
At last, it is interesting to know the ideal pressure RANGE (10 PSI is much different than 110...), but once this is determine, trial and error and experimentation is the definitive way to know what's the ideal pressure for you.
Hope that helps.