NFI Core Review questions with correct
answers
4 |Stages |of |combustion |- |VERIFIED |ANSWER✔✔-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____________ |- |VERIFIED |
ANSWER✔✔-8,600 |BTUs
Catalytic |converters |can |lower |the |ignition |temperature |of |wood |smoke |to |approximately |- |VERIFIED |
ANSWER✔✔-500 |degrees
The |proper |UL |Standard |for |chimneys |used |to |vent |wood |stoves |is |- |VERIFIED |ANSWER✔✔-UL103HT
UL103HT |- |VERIFIED |ANSWER✔✔-These |requirements |cover |factory-built |chimneys |intended |for |
venting |gas, |liquid, |and |solid-fuel |fired |residential-type |appliances |and |building |heating |appliances
According |to |NFPA |211, |the |maximum |horizontal |run |of |a |wood |stove |connector |is |limited |to |
______________ |percent |of |the |vertical |portion |of |the |chimney |above |the |connector. |- |VERIFIED |
ANSWER✔✔-50%
According |to |NFPA |211, |a |manual |damper |installed |in |a |wood |stove |connector |pipe |cannot |block |
more |than |___________ |percent |of |the |connector |when |fully |closed. |- |VERIFIED |ANSWER✔✔-80%
According |to |NFPA |211, |the |maximum |permitted |chimney |flue |area |is |______ |times |the |appliance |
flue |collar |area |for |exterior |chimneys |and |____ |times |the |appliance |flue |collar |area |for |interior |
chimneys. |- |VERIFIED |ANSWER✔✔-2 |and |3
, The |maximum |chimney |offset |angle |permitted |in |the |United |States |is |__________ |degrees |(from |
vertical). |- |VERIFIED |ANSWER✔✔-30 |degrees
According |to |NFPA |211 |and |the |IRC, |a |3.5" |brick |wall |with |a |1" |ventilated |air |space |provides |a |
__________ |percent |clearance |reduction |- |VERIFIED |ANSWER✔✔-66%
According |to |NFPA |211 |and |the |IRC, |a |3.5" |brick |wall |without |ventilated |air |space |provides |a |
__________ |percent |clearance |reduction. |- |VERIFIED |ANSWER✔✔-33%
According |to |NFPA |211 |and |the |IRC, |a |24 |gauge |sheet |metal |panel |with |a |1" |ventilated |air |space |
provides |a |__________ |percent |clearance |reduction |when |used |as |a |ceiling |protector. |- |VERIFIED |
ANSWER✔✔-50%
The |standard |clearance |to |combustibles |for |an |unlisted |woodstove |is |___________ |inches. |- |VERIFIED |
ANSWER✔✔-36"
What |is |UL |1618?
2 |types |of |manufactured |pads |- |VERIFIED |ANSWER✔✔-Floor |protection
1. |Type |1. |Ember |protection
2. |Type |2 |thermal |floor |protection
Type |1 |floor |protection |- |VERIFIED |ANSWER✔✔-can |be |used |on |appliances |that |do |not |require |
thermal |protection
Type |2 |floor |protection |- |VERIFIED |ANSWER✔✔-· |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
What |is |R-Value? |- |VERIFIED |ANSWER✔✔-Measure |of |heat |resistance
Gas |products |standards |written |by____________ |- |VERIFIED |ANSWER✔✔-ANSI |(American |National |
Standards |Institute)
answers
4 |Stages |of |combustion |- |VERIFIED |ANSWER✔✔-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____________ |- |VERIFIED |
ANSWER✔✔-8,600 |BTUs
Catalytic |converters |can |lower |the |ignition |temperature |of |wood |smoke |to |approximately |- |VERIFIED |
ANSWER✔✔-500 |degrees
The |proper |UL |Standard |for |chimneys |used |to |vent |wood |stoves |is |- |VERIFIED |ANSWER✔✔-UL103HT
UL103HT |- |VERIFIED |ANSWER✔✔-These |requirements |cover |factory-built |chimneys |intended |for |
venting |gas, |liquid, |and |solid-fuel |fired |residential-type |appliances |and |building |heating |appliances
According |to |NFPA |211, |the |maximum |horizontal |run |of |a |wood |stove |connector |is |limited |to |
______________ |percent |of |the |vertical |portion |of |the |chimney |above |the |connector. |- |VERIFIED |
ANSWER✔✔-50%
According |to |NFPA |211, |a |manual |damper |installed |in |a |wood |stove |connector |pipe |cannot |block |
more |than |___________ |percent |of |the |connector |when |fully |closed. |- |VERIFIED |ANSWER✔✔-80%
According |to |NFPA |211, |the |maximum |permitted |chimney |flue |area |is |______ |times |the |appliance |
flue |collar |area |for |exterior |chimneys |and |____ |times |the |appliance |flue |collar |area |for |interior |
chimneys. |- |VERIFIED |ANSWER✔✔-2 |and |3
, The |maximum |chimney |offset |angle |permitted |in |the |United |States |is |__________ |degrees |(from |
vertical). |- |VERIFIED |ANSWER✔✔-30 |degrees
According |to |NFPA |211 |and |the |IRC, |a |3.5" |brick |wall |with |a |1" |ventilated |air |space |provides |a |
__________ |percent |clearance |reduction |- |VERIFIED |ANSWER✔✔-66%
According |to |NFPA |211 |and |the |IRC, |a |3.5" |brick |wall |without |ventilated |air |space |provides |a |
__________ |percent |clearance |reduction. |- |VERIFIED |ANSWER✔✔-33%
According |to |NFPA |211 |and |the |IRC, |a |24 |gauge |sheet |metal |panel |with |a |1" |ventilated |air |space |
provides |a |__________ |percent |clearance |reduction |when |used |as |a |ceiling |protector. |- |VERIFIED |
ANSWER✔✔-50%
The |standard |clearance |to |combustibles |for |an |unlisted |woodstove |is |___________ |inches. |- |VERIFIED |
ANSWER✔✔-36"
What |is |UL |1618?
2 |types |of |manufactured |pads |- |VERIFIED |ANSWER✔✔-Floor |protection
1. |Type |1. |Ember |protection
2. |Type |2 |thermal |floor |protection
Type |1 |floor |protection |- |VERIFIED |ANSWER✔✔-can |be |used |on |appliances |that |do |not |require |
thermal |protection
Type |2 |floor |protection |- |VERIFIED |ANSWER✔✔-· |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
What |is |R-Value? |- |VERIFIED |ANSWER✔✔-Measure |of |heat |resistance
Gas |products |standards |written |by____________ |- |VERIFIED |ANSWER✔✔-ANSI |(American |National |
Standards |Institute)
