CCP Chimney Liner Systems & Relining 3

Question 1

Which inspection level is required before relining a chimney according to NFPA 211?

Accepted Answer

Level 2 inspection including accessible attic, basement, and video scanning of the flue

Answer

NFPA 211 requires a Level 2 inspection before relining, which includes video scanning of the complete flue interior to fully assess the chimney's condition and suitability for the relining method chosen.

Question 2

What is the main purpose of insulating a flexible metal chimney liner during installation?

Accepted Answer

To improve draft performance and reduce condensation by maintaining higher flue gas temperatures

Answer

Insulating a metal liner keeps flue gases at higher temperatures as they travel up the chimney, which improves draft efficiency, reduces acidic condensation, and extends liner service life.

Question 3

According to the 3-2-10 rule in NFPA 211, what minimum height requirements apply to a chimney termination?

Accepted Answer

3 feet above the roof penetration point and 2 feet above any portion of the building within 10 horizontal feet

Answer

NFPA 211's 3-2-10 rule requires chimneys to extend at least 3 feet above the highest point where they pass through the roof and at least 2 feet above any portion of the building within 10 horizontal feet.

Question 4

What physical signs on a clay tile liner indicate the tile has been damaged by a chimney fire or extreme heat event?

Accepted Answer

Honeycombing, spalling of the tile surface, glaze loss, and thermal cracking

Answer

Honeycombing, spalling, loss of the protective glaze, and thermal cracking are the hallmark signs that clay tiles have been subjected to the extreme heat of a chimney fire.

Question 5

When sizing a replacement metal liner for a gas appliance, what key factors and references must be used?

Accepted Answer

Appliance BTU input, total flue height, number of elbows, and venting tables from NFPA 54 or the appliance manufacturer

Answer

Proper liner sizing for gas appliances requires applying NFPA 54 venting tables or manufacturer specifications that account for BTU input, total flue height, and any elbows or offsets in the liner run.

CCP - Certified Chimney Professionals Practice Test

CCP - Certified Chimney Professionals Practice Test

CCP Chimney Liner Systems & Relining 3