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804.3.4 Horizontal terminations.
Horizontal terminations and discharges, including any horizontal direct vent terminations subject to Section 804.1 and horizontal integral vent terminals subject to Section 804.2, shall not be permitted, unless otherwise authorized by the commissioner.
804.3.5 Vertical terminations.
Vertical terminations and discharges shall comply with Section 801.21.
804.3.6 Exhauster connections.
An appliance vented by natural draft shall not be connected into a vent, chimney or vent connector on the discharge side of a mechanical flue or power exhauster.
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