Folks,
I know time is running short and panic is setting in... but please don't rely on "I was under the impression" or "This is what we had to do last year". Please do refer to the 2004 documentation.
On the current issue, Section 5.2.9 clearly lays out the requirements of your Pneumatics system. (and you will be inspected against these)
As far as "legality", Section 5 is your primary resource, the Pneumatics Manual your secondary resource. If they disagree anywhere (not saying they do) Section 5 would override.
Hope that helps!
Aidan