Jack, make sure you put some sort of heat shield above the fire place. Some models get hot on the top and it could dry the wood out and start a fire. I would hate to see someone lose something that they love. Especially the second home.
I would also like to second
fireflipper. If you have installed the fireplace without a heat shield above it, think hard about adding a heat shield to it.
For those that want a fireplace,
it does not heat your trailer.. It basically is good for a few feet around the area and looks nice. But that is all. Many people are disappointed that it will not heat the full living room.
During this winter at Melissa TX with temps down to about 24* we have used 2-150 watt light bulbs in the basement. Up to 4 space heaters in the interior. 1 in the bed room, 1 in the back of the trailer and 2 in the middle. Found that the air return beside the steps to the bedroom was letting a lot of cold air into the living area.