Published at Sunday, December 09th, 2018 - 11:26:43 AM. Fireplace. By Chiara Bleich.
Outdoors a ventless gas log cannot deplete oxygen or fill your home with gas but a different set of issues ensues. Oxygen Sensors can get pollen and dust in them and wind can confuse the pilot assembly’s ability to provide continuous heat to the thermocouple. The design of the fireplace and the placement of the logs should be discussed with a professional to minimize these possibilities. These issues do not risk the safety of your family but if the thermocouple thinks the pilot is out because the wind is directing the flame in another direction, your gas log burner will turn itself off. An experienced installer will manipulate the mounting bracket to work around wind issues and position the Oxygen Depletion Sensors so they do not get clogged with pollen and dust.
For instance, a homeowner decides to build a marble mantle seven feet wide and four feet high. The budget takes into account the marble tile to finish the design and the firebox, structural materials to build the fireplace and labor. Most people do not look at a chimney and think "Wow, that is a great looking chimney" so we do not always account for the ventilation when we design our perfect outdoor accent. The ventilation cannot be skipped just because there is plenty of ventilation outdoors. The proper flue will "pull" the fumes and smoke up and away from the fireplace. Without the vent gas fumes will flow from the front of the fireplace and the area usually reserved for sitting in front of the fire will be hot and smelly. The homeowner contacts a contractor who explains the chimney, flue and roof termination will double the budget.
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