It depends on the LVO really. What happens next is that you get a second PPR letter but this time from your LVO. The wording and some of the requirements you saw in the one from Ottawa may differ from the second one. You should be conservative and cover all your bases by trying to fulfill the requirements on both letters.
It took CIC 17 calendar days to send the second PPR. I sent the email right after getting ppr and followed up a week or so after. I did send a CSE the day before a got the new PPR but I can't know for sure if that was the reason they started working on my case. In general, most members changing to LVO have reported an avg wait of 8-10 days. Mine was a little over that time frame but it just goes to show that we can't ever be sure with CIC. But rest assure that you will get your proper PPR and subsequent PR status sooner rather than later.
My very best wishes... And besides the email, send a CSE as well