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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.
804.3.7 Exhauster sizing.
Mechanical flue or power exhausters and the chimney or vent system served shall be sized and installed in accordance with the manufacturer's instructions.
804.3.8 Mechanical draft systems for manually fired appliances and fireplaces.
A mechanical draft system shall be permitted to be used with manually fired appliances and fireplaces where such system complies with all of the following requirements:
1. The mechanical draft device shall be listed and labeled in accordance with UL 378, and shall be installed in accordance with the manufacturer's instructions.
2. A device shall be installed in the room with the appliance or fireplace that produces visible and audible warning upon failure of the mechanical draft device or loss of electrical power, at any time that the mechanical draft device is turned on. This device shall be equipped with a battery backup if it receives power from the building wiring.
3. A smoke detector or alarm, and a carbon monoxide detector or alarm, shall be installed in the room with the appliance or fireplace. This device shall be equipped with a battery backup if it receives power from the building wiring.
805.1 Listing.
Factory-built chimneys shall be listed and labeled and shall be installed and terminated in accordance with this code and the manufacturer's instructions.
805.2 Solid fuel-burning appliances.
Factory-built chimneys installed in dwelling units with solid fuel-burning appliances shall comply with the Type HT requirements of UL 103 and shall be marked "Type HT" and "Residential Type and Building Heating Appliance Chimney".
Exceptions:
1. Chimneys for use with open combustion chamber fireplaces shall comply with the requirements of UL 103 and shall be marked "Residential Type and Building Heating Appliance Chimney".
2. Chimneys for use with open combustion chamber appliances installed in buildings other than dwelling units shall comply with the requirements of UL 103 and shall be marked "Building Heating Appliance Chimney" or "Residential Type and Building Heating Appliance Chimney."
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