I have a just had a new Jotul Castine (F400) professionally installed. The is adequate clearance in all directions per the manual with no heat shields. Yesterday I burned the three break-in fires, and tonight I burned the stove for most of the evening to heat the house. I noticed that the wall that is closest to the stove - 14" - is hot to the touch. Should I be concerned, should I get heat shields? Thanks.