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Posted by Harold Kestenholz - Hydronic Network on November 26th, 2001 01:27 PM
In reply to Power vents for oil furnace by C. Nolan on November 26th, 2001 09:28 AM [Go to top of thread]

The draft over the fire must be steady as the heating appliance manufacturer specifies. If used on an oil burner, the power vent will make a negative draft that may be more than required, so a draft damper may be required. If used on a gas burner with a draft hood, the draft hood will break the draft above the fire, so a draft damper may not be necessary.

In either case, measure the draft above the fire to be sure it is proper.

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