Which of the following statements regarding installation of a fireplace is correct?

A. Refractory mortars or portland cement mortar can be used to install the firebrick hearth.
B. Heat Stop 50 should be remixed or tempered if the mortar begins to dry out during the installation.
C. Mortar should be used to level the unit on the hearth.
D. The fireplace form should be centered on the hearth, even with the edge of the front course of firebrick.


Answer: D

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