Hearth and Home Technologies I60, I80 owner manual Sidewalls/Surrounds, Frame the Fireplace

C. Sidewalls/Surrounds

•Adjacent combustible sidewalls must be located a minimum 24 in. (610 mm) from the fireplace opening.

•Combustible and noncombustible mantel legs, surrounds and stub walls may be constructed within the gridded area, Figure 6.3.

Note: Grid depicts 1-in scale.

FLUSH	BRICK	4 in.
		[102 mm]
FRONT	FRONT

A

28 5/8 in.

[727 mm]

50° angle

24in.

[610 mm]

B

39° angle

24in.

[610 mm]

19 3/4 in.

[502 mm]

Model		A	B
I60	inches	36	45
	mm	914	1130
I80	inches	42	50 1/2
	mm	1067	1283

Figure 6.3 Mantel Leg or Wall Projections (Acceptable on both sides of opening)

D. Frame the Fireplace

Figure 6.4 shows typical framing using combustible materials (2x4 lumber shown).

•Observe all required air space clearances to combustible materials as shown in Figure 6.1 & 6.2.

•Framing across the top of fireplace must be above top standoffs.

2 in. (51 mm) min. air space clearance from chimney.

Note: Framing must be extended straight up, all the way to the ceiling.

	Header MUST NOT be notched!
	D = extra space needed for outside air connection.
C	If outside air duct has no bend, this dimension may be
	reduced as long as minimum clearances are met.
	D
							D	D
	A	Model		A	B*	C**
B							(4” duct)	(6” duct)
		I60	in.	45 1/2	28	50	8	12
			mm	1156	711	1270	203	305
		I80	in.	51 1/2	28 1/2	50	8	12
			mm	1308	724	1270	203	305

*If interior of chase will be drywalled, add the thickness to this measurement.

**Adjust header height for a raised floor under fireplace.

Figure 6.4 Framing the Fireplace

20 Heatilator • I60, I80 • 4013-250 • Rev C • 11/08