We just had an Olympic Avalon insert installed into our fireplace. We chose to go without panels and without a blower. The installation was completed such that the slot at the top of the insert, where the heat comes out, is a few inches inside the fireplace opening. We asked to have it protrude farther onto the hearth but were told that it was impossible (would require an elbow pipe that does not fit) and not necessary. They said that since we don't have panels, it is not a concern. We are worried that the heat will get trapped in our fireplace. Should we be concerned about this installation?