Fireplaces, Chimneys & Solid Fuel Appliances Flashcards
7 cards from real INTERNACHI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Fireplaces, Chimneys & Solid Fuel Appliances flashcards as text
What is a 'zero-clearance' or factory-built fireplace?
Answer: A listed, prefabricated metal fireplace that can be installed adjacent to combustible materials per manufacturer specs
Zero-clearance fireplaces are UL-listed prefabricated units engineered with insulating air channels that allow installation directly against wood framing with manufacturer-specified clearances.
Which of the following is a common cause of chimney backdrafting?
Answer: Negative pressure inside the home created by exhaust fans
When exhaust fans (kitchen, bath, whole-house) depressurize a tightly sealed home, outside air can be drawn down the chimney flue to equalize pressure, causing backdrafting.
What is the hearth extension requirement for a fireplace with an opening greater than 6 square feet?
Answer: Extends at least 20 inches in front of and 12 inches beyond each side of the opening
IRC requires that for fireplaces with openings greater than 6 square feet, the hearth extension must be at least 20 inches deep and extend at least 12 inches beyond each side of the opening.
When inspecting a gas fireplace, which observation should an inspector report as a deficiency?
Answer: Yellow flames with black soot deposits on the firebox interior
Yellow flames and soot deposits in a gas appliance indicate incomplete combustion, which can signal improper air-to-gas ratio, burner obstruction, or CO production.
What does InterNACHI's Standards of Practice require inspectors to do when they cannot visually inspect the interior of a flue?
Answer: Describe the limitation and recommend further evaluation by a qualified specialist
When an inspector cannot fully inspect a component, InterNACHI's SOP requires disclosing the limitation in the report and recommending further evaluation by a qualified professional.
What is the purpose of a chase cover on a factory-built or prefabricated chimney?
Answer: To cap and weatherproof the framed chimney chase surrounding the metal flue pipe
A chase cover is a flat or sloped metal panel that caps the top of a wood-framed chimney chase, protecting the interior framing from rain and moisture infiltration.
Which component of a wood-burning stove installation does an inspector evaluate for safe clearance to combustibles?
Answer: The stovepipe, stove body, and floor protector clearances per manufacturer and code
An inspector must verify that the stovepipe, stove body, and floor protector all maintain required clearances to combustible walls, ceilings, and floors as specified by the manufacturer and local code.