[Foss]

Well, its a bit tricky I think. I never got him to aknowledge me as the master either.

But, I got this from rpgclassics.com that seems to indicate you have to say something specific to him.

"talk to him and after a while he'll ask to join your party; accept, that's what we're here for.
Talk to him again and ask about how he got to Rubikon, then about Mechanus, the source and all that. Then ask him how he is doing, with a high enough INT you can now ask him if his separation from the source changed his prespective. This causes Nordom to upgrade: +1 INT, +1 CON and 36000 exp."

And this:

"After disposing of the Wizard talk to Nordom again, start by asking him about how he came to Rubikon, ask about the field test and the previous director as well. He now knows that the former director was killed by the Wizard, tell him you are the new director and he gets +1 INT, +1 DEX and 36000 exp. Ask Nordom about your functions as director, there's a whole bunch of stuff you can do now, just be sure to ask him about the tasks his previous director had him doing, you can get some pretty nifty items from some of those. "

Hope it helps.