SK, I'm happy to help at any time. I would ask about the data card -- ensure there is one and that the machine is writing to the card before the RT leaves. Make sure the humidifier is putting out heat/humidification and as with any appliance, listen that the motor is smooth -- that no one dropped your machine in transit, and that it has clean filters installed.
Make sure his face is measured for the mask size. We can also try a mouthpiece later if he prefers that during the day.
As Vince says, the initial settings are seldom ideal so expect some tweaking.
Since spring is in the air, allow me to also remind all that you do not have to suffer with the wrong mask. cpap.com is offering many right now with free return insurance if you don't like it. And, of course, if anyone is dissatisfied with their settings (defined as not getting a good night's sleep and/or feeling that something is amiss), please let me know. BiPAP is most valuable, like any tool, when used optimally.
Best,
Laurie