Venting

The Radiant Heat Burner System™ is a Vented (Gas or Propane) System. Fully vented gas logs are to be installed only in a fully, vented, noncombustible Masonry Fireplace  with an open damper. The chimney must be free of any obstructions. The fireplace must be designed and approved to burn wood. Like burning natural firewood, your gas log set is designed to burn with yellow, smoky flames. For this reason, it must be adequately vented. The fireplace chimney must have a minimum flue dimension of at least 8 inches.