Harman® • XXV Installation Manual_R31 • 2004 -___ • 11/15
16
3-90-00684i
C. Venting & Use of Elbows
2
+
= Positive static pressure
= Negative static pressure
+
+
-
2
-
Figure 4.11
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Equivalent Vent Length: The equivalent vent length for
common pellet vent components are:
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The total allowable equivalent vent length is:
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Example: First Floor Installation
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The equivalent vent length is:
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Example: Connection to Masonry Chimney
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The equivalent vent length is:
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