Trane High Efficiency Furnace Xl80

When a furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space containing the furnace the return air shall also be handled by a duct s sealed to the furnace casing and terminating outside the space containing the furnace. The xl 80 high efficiency gas furnaces employ a hot surface ignition system which eliminates the waste of a constant burning pilot. It will run for about 15 20 minutes the flame will die then it will attempt to restart.

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