Hi, I have a Temco Fireplace insert model# 10c39 3 that I have been burning wood in for 12 years. It has a insert for a gas line as I am in the process of converting to a gas fireplace. However, I would prefer to buy a vent free fireplace. The tag on the inside of the fireplace says that the insert has not been tested for a vent fee fireplace. I'm trying to figure out if I can use this particular insert for vent free logs. Any help you can give me would be appreciated. Thanks Paul