Our Hearthstone will go to 800-900 deg. on the flue gas temperature with a full load for the night, with the air control closed all the way. the secondary combustion will really be rolling for the fist 1-2 hours then it settles down. If it's 75 in the stove room within an hour it will be up around 80 deg. So when I load for the night it is definitely time to head to the back bedroom.
You have the new insert worries we all had when first starting out. I was a basket case. Now I cut her back at 500 or so, watch her go up to 700-750 for an hour, then settle in at 600-650 for a good few hours, then 500 for a good few hours more, then slowly taper down. Thats a PE in action. Not to mention the Summits have EBT, which even with the air cut down all the way. It regulates itself adding & cutting back the air as it needs. Mine must be 600-650 range. I get secondary for hours.
. Good stove season to you.