CCS CCS Fireplace Anatomy & Components

Question 1

What is the function of the smoke shelf in a masonry fireplace?

Accepted Answer

To catch falling debris and rain and prevent downdrafts from pushing smoke into the room

Answer

To hold the damper assembly in place

Answer

To support the firebox floor

Answer

To direct combustion air to the fire

Question 2

Which part of the fireplace is referred to as the 'throat'?

Accepted Answer

The narrow passage between the top of the firebox and the smoke chamber where the damper is located

Answer

The firebox opening facing the room

Answer

The base of the flue liner

Answer

The ash dump opening in the firebox floor

Question 3

The smoke chamber is located:

Accepted Answer

Between the throat damper and the base of the flue liner

Answer

Below the firebox floor

Answer

Inside the flue liner above the crown

Answer

Behind the fireback in the firebox

Question 4

What is the recommended parge coat material for smoke chambers according to NFPA 211?

Accepted Answer

A 1/2-inch or greater layer of listed refractory mortar to seal and smooth the smoke chamber walls

Answer

Standard mortar mix at any thickness

Answer

Portland cement with sand only

Answer

Fireclay mixed with water

Question 5

The fireback is the rear wall of the firebox and its primary function is to:

Accepted Answer

Reflect radiant heat into the room and protect the masonry behind the fire

Answer

Prevent creosote from forming

Answer

Support the smoke shelf above

Answer

Seal the ash pit below

Question 6

An ash dump is located in the firebox floor and connects to:

Accepted Answer

An ash pit below the firebox where ash can be collected and removed from outside

Answer

The smoke chamber above

Answer

The combustion air intake vent

Answer

The clean-out door in the flue liner