Air Shutter Adjustment
A key to a good-looking flame is correct air flow through the provided air-shutters on Direct Vent gas appliances and fireplaces. Type B vented gas appliances usually do not have an air shutter design like the Direct Vent models, so check the owner’s manual. We have selected an image from Travis Industries gas burning fireplace owner’s manual to show you how a proper flame should look and what the impact of the air shutters can do for that adjustment.