Hearth and Home Technologies BIR50 operating instructions Hearth Extension / Floor Protection

		North Star
		EPA Certified Fireplace
	C. FIREPLACE DIMENSIONS		SIDE VIEW
	FRONT VIEW
	3-1/2"
	TOP VIEW	1"
43-13/16"
40-5/16"	31-1/8"
		23-1/8"
	11-1/8"
		5-7/8"	6-1/2"
	37"		9-11/16"
	40"		Fan Electrical Access,
			(right side of fireplace)
	MINIMUM CLEARANCES TO COMBUSTIBLES		See Page 10

WITHIN ENCLOSURE AREA:
	Appliance to backwall	1” (25mm)
	Appliance to sidewall	1” (25mm)
	Duct boots to framing	0” (0mm)
	Top standoffs to header	0” (0mm”)
EXPOSED SURFACES
	Faceplate to sidewall	16” (406mm)
	Heat Zone air grills to ceiling	12”(305mm)

MANTEL
	Mantel from base of fireplace	60” (1524mm)
	Maximum mantel width	12” (305mm

CHIMNEY SECTIONS

Chimney sections at any level require a 2” (51mm) minimum air space clearance between the framing and chimney section.

HEARTH EXTENSION / FLOOR PROTECTION

1. Fireplace and Hearth Extension are flush on the floor:

Combustible flooring 20” (508mm) in front of and 8” (203mm) to either side of the fuel opening; must be insulated with non-combustible floor protection with a minimum thickness of 1” (25mm) and (“k” value = 0.43).

2. Fireplace is flush on the floor and Hearth Extension is raised to the bottom of the fascia:

Raised hearth must be constructed of non-combustible materials such as cement block or equivalent material Decorative combustible flooring on the raised hearth must be 20” (508mm) in front of and 8” (203mm) to either side of the fuel opening must be insulated with non-combustible floor protection with a minimum thickness of 1-1/2” (38mm) and (“k” value = 0.43).

3. Fireplace is recessed in the floor to the bottom of the fascia:

Combustible flooring 30” (762mm) in front of and 8” (203mm) to either side of the fuel opening ;must be insulated with non-combustible floor protection with a minimum thickness of 1” (25mm) and (“k” value = 0.43).

NONCOMBUSTIBLE	GAP (SEAL WITH NONCOMBUSTIBLE SEALANT)
DECORATIVE MATERIAL

1" (51mm)

(2)HX4 MICORE FACTORY BUILT HEARTH EXTENSION (Each HX4 = 1/2" (13mm) thick)

UP TO BOTTOM OF FASCIA 6" (152mm)

HEARTH METAL STRIPS

Figure 5A - Factory Built Hearth Extension

4-03 5 480-1081