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Is the post purge really needed in the power venting system if the appliance runs a post purge?

April 26, 2017appliance needed power purge system venting

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Is the post purge really needed in the power venting system if the appliance runs a post purge?

1 Answer

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Yes, the main reason to have the post purge on the power venting system is to purge the flue gases from the venting system before they cool to the point that they will condense. It is also used to expel the flue gases out of the motor to protect it and give it longer life.