Martin Fireplaces 400BWBCA, 400BWBIA Floor Protection, Installing Fireplace On Combustible Floor

FLOOR PROTECTION

INSTALLING FIREPLACE ON COMBUSTIBLE FLOOR

If fireplace is installed on a combustible floor, protect the floor area either side of the fireplace opening and in the front with an insulating non-combustible hearth extension. (16" [400 unit] or 20" [500 unit] minimum in front of fireplace and 8" minimum on both sides. See Figures 6 through 12.

8" Min.

Fireplace

	16" Min.
6" Min. Brick	(400 Unit)
or Stone	20" Min.
	(500 Unit)
from Top
of Platform

Brick or Stone Hearth Extension

52" (400 Models)

66" (500 Models)

Figure 6 - Installing Floor

Protection (Circulating Model)

Note: Do not block the side air vents or air inlet louvers on the lower front of the fireplace with hearth extension.

8" Min.

	16" Min.
6" Min. Brick	(400 Unit)
or Stone	20" Min.
	(500 Unit)
from Top
of Platform

Hearth Extension Clearances & Width

	400 Unit	500 Unit
On Both Sides	8" Min.	8" Min.
Front of Fireplace	16" Min.	20" Min.
Extension Width	52"	66"

Air Vents — DO NOT BLOCK

Metal Safety Strip Must Be

Use if Unit Is Placed on

Combustible Floor

Platform May Extend Under Hearth Extension if Desired

Fireplace

Platform

(If Necessary)

Air vents and air inlet louvers allow necessary cooling air around the fire- place. Determine the finished height of the hearth extension to be used. Raise the fireplace on a platform, if necessary, to prevent blocking of air openings and lower louvered panel.

Note: No platform is needed if hearth extension does not exceed 1" thick for circulating units or 6½" for radiant units.

Brick or Stone Hearth Extension	Metal Safety Strip
52" (400 Models)
66" (500 Models)	Must Be Use if
	Unit Is Placed on
	Combustible Floor

Figure 6 - Installing Floor Protection (Radiant Model)

61D0008 11