No, I don't believe there is a specific section in our Constitution, in either the 1867 or 1982 Constitution Acts. There is the requirement under section 100 that says Parliament is responsible for the determination of the judicial compensation.
The idea of the commission was established as a constitutional principle by the Supreme Court of Canada in the P.E.I. reference case, but it's not reflected in any specific statutory provision, as for example we would have with the Law Commission of Canada legislation.