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NFI Review Questions and Answers (Codes)

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NFI Review Questions and Answers (Codes)

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NFI Review Questions and Answers
(Codes)


UL103HT

These requirements cover factory-built chimneys intended for venting gas, liquid, and solid-fuel fired
residential-type appliances and building heating appliances




The maximum chimney offset angle permitted in the United States is __________ degrees (from
vertical).



30 degrees




What is UL 1618?



(2 types of manufactured pads)



1. Type 1. Ember protection



2. Type 2 thermal floor protection

, Type 1 floor protection

Can be used on appliances that do not require thermal protection




Type 2 floor protection

· For appliances req. to heave thermal protection



· Must have an R value of 1.0



· R-value must equal or exceed minimum R value needed




R-Value

Measure of heat resistance




Gas products standards written by____________



ANSI (American National Standards Institute)

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