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Nfi Core Review Class With Correct Answers

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NFI CORE REVIEW CLASS WITH CORRECT ANSWERS

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NFI CORE REVIEW CLASS WITH CORRECT AN




4 Stages of combustion - CORRECT ANS✔✔1. Moisture evaporation
2. Release of combustible gases
3. Ignition of combustible gas
4. Char burning

The total energy produced by burning one pound of wood is approximately____________ - CORRE

Catalytic converters can lower the ignition temperature of wood smoke to approximately - CORREC

The proper UL Standard for chimneys used to vent wood stoves is - CORRECT ANS✔✔UL103HT

UL103HT - CORRECT ANS✔✔These requirements cover factory-built chimneys intended for ventin
fired residential-type appliances and building heating appliances

According to NFPA 211, the maximum horizontal run of a wood stove connector is limited to ______
vertical portion of the chimney above the connector. - CORRECT ANS✔✔50%

According to NFPA 211, a manual damper installed in a wood stove connector pipe cannot block m
of the connector when fully closed. - CORRECT ANS✔✔80%

According to NFPA 211, the maximum permitted chimney flue area is ______ times the appliance f
chimneys and ____ times the appliance flue collar area for interior chimneys. - CORRECT ANS✔✔

The maximum chimney offset angle permitted in the United States is __________ degrees (from ve
degrees

According to NFPA 211 and the IRC, a 3.5" brick wall with a 1" ventilated air space provides a ____
reduction - CORRECT ANS✔✔66%

According to NFPA 211 and the IRC, a 3.5" brick wall without ventilated air space provides a _____
reduction. - CORRECT ANS✔✔33%

According to NFPA 211 and the IRC, a 24 gauge sheet metal panel with a 1" ventilated air space pr
clearance reduction when used as a ceiling protector. - CORRECT ANS✔✔50%

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