Wow that's chucking some water down! I have the same wand, fitted with '02s but I run my pressure down as low as 150psi using it - only for cleaning "clean" carpets really, I use a different wand for dirtier jobs.
Such big jet sizes may keep the heat better, as when you atomise water into particles, the smaller they are the more heat they will lose, even in the couple of inches between jet and carpet.