12
PROPER INSTALLATION
IMPROPER INSTALLATION
2- A minimum rise of ¼” per horizontal foot must be respected.
2.11 DAMPER
The barometric damper must be adjusted so that the maximum draft measured at
the furnace outlet is limited to -0.06 in. w.c. However, the minimum draft to be
respected at all times is -0.04 in. w.c. in the evacuation pipe.
WARNING
DRAFT HIGHER THAN -0.06” W.C. MAY CAUSE AN UNCONTROLLABLE
FIRE.
CAUSES
RESTRICTION
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