Heat & Glo LifeStyle 550TRSI-AUF owner manual D. Mantel and Wall Projections, Combustible Mantels

D. Mantel and Wall Projections

WARNING! Risk of Fire! Comply with all minimum clear- ances as specified. Framing or finishing material closer than the minimums listed must be constructed entirely of noncom- bustible materials (i.e., steel studs, concrete board, etc).

Combustible Mantels

			305
			279
NON-COMBUSTIBLE			254
		229
BOARD		203
	178			305
	152			279
127			254
102			229
76			203
			127 152178
51	76	102
51

TOP FRONT EDGE

OF FIREPLACE

Note: All measurements in millimeters.

Note: Measurement is taken from top of the opening, NOT the top of the fireplace.

Figure 5.3 Minimum Vertical and Maximum Horizontal Dimensions of Combustibles

Combustible Mantel Legs or Wall Projections

*Add 1/2 in. (13 mm for rear vent)

3-1/2 in.	1/2 in. (13 mm)
	SHEETROCK
(89 mm)
	NON-COMBUSTIBLE
	BOARD SHIPPED
	WITH APPLIANCE
1/2 in.
(13 mm)

NON-COMBUSTIBLE ZONE

Figure 5.3 Non-combustible zone

If joints between the finished walls and the heater surround (top and sides) are sealed, a 149 ºC (300 ºF) minimum seal- ant material must be used. These joints are not required to be sealed. Only non-combustible material (using 149 °C (300 ºF). minimum adhesive, if needed) can be applied as facing to the heater surround. See Figure 5.4.

FINISH WALL MATERIAL MAY BE

COMBUSTIBLE - TOP AND SIDES

TOP VIEW

2-7/8 in.*

(73 mm)

MINIMUM

1/2 in.* (13 mm)

MINIMUM

3 ft. (914 mm) MAXIMUM

NON-COMBUSTIBLE

BOARD

Figure 5.4 Clearances to Mantel Legs or Wall Projections (Acceptable on both sides of opening.)

HIGH TEMPERATURE (149 ºC (300 ºF) MIN.)

TOP AND SIDE SEAL JOINT

Note: Zero clearance finishing allowed on sides of surround and top of non-combustible board.

Figure 5.4

Heat & Glo • 550TRSI-AUF, 550TRSILP-AUF • 2079-980 Rev. N • 5/12 23