Heat & Glo LifeStyle 550TRSI-AUF Vent Clearances and Framing, A. Pipe Clearances to Combustibles

8 Vent Clearances and Framing

A. Pipe Clearances to Combustibles				B. Wall Penetration Framing
WARNING! Risk of Fire! Maintain air space clearance to				Combustible Wall Penetration
vent. DO NOT pack insulation or other combustibles:				Whenever a combustible wall is penetrated, you must
•	Between ceiling firestops			frame a hole for the wall shield firestop(s). The wall shield
•	Between wall shield firestops			firestop maintains minimum clearances and prevents cold
• Around vent system				air infiltration.
Failure to keep insulation or other material away from				• The opening must be framed on all four sides using the
vent pipe may cause over heating and fire.				same size framing materials as those used in the wall
				construction.
				• DVP pipe - A wall shield firestop is required on one side
Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm).				only on interior walls. If your local inspector requires a
• DVP heat shield - designed to be used on a wall 4 in. to 7-1/4 in. (102 mm to 184				wall shield firestop on both sides, then both wall shield
	mm) thick.
• If wall thickness is less than 4 in. the existing heat shields must be field trimmed. If				firestops	must	have	a heat	shield	(refer	to Section
	wall thickness is greater than 7-1/4 in. a DVP-HSM-B will be required.			16.B.) attached to them.
• SLP heat shield - designed to be used on a wall 4-3/8 in. to 7-5/8 in. (111 mm to
	194 mm thick).			• SLP pipe - A wall shield firestop must be placed on each
• If wall thickness is less than 4-3/8 the existing heat shields must be field trimmed.
	If wall thickness is greater than 7-5/8 in. a DVP-HSM-B will be required.			side of an interior wall. A minimum 1-1/2 inch (38 mm)
				overlap of attached heat shields must be maintained.
		(DVP-SLP Pipe Shown)		• See Section 10.H. for information for regarding the in-
				stallation of a horizontal termination cap.
		Heat	3 in. (76 mm)	Non-Combustible Wall Penetration
	3 in. (76 mm)	Shield	top clearance *	If the hole being penetrated is surrounded by noncom-
	top clearance		Heat
			Shield	bustible materials such as concrete, a hole with diameter
1 in. (25 mm)				one inch greater than the pipe is acceptable.
clearance around				Whenever a non-combustible wall is penetrated, the wall
vertical sections
			1 in. (25 mm)	shield firestop is only required on one side and no heat
		Wall	clearance	shield is necessary.
		Shield	bottom & sides
		Firestop
			WALL	Note: A 6 in. (152 mm) section of straight flue must
				be attached to the fireplace before a 90° elbow.
		Heat	3 in. (76 mm)
		Shield	top clearance *
			Heat
			Shield
		Wall	1 in. (25 mm)
			clearance
		Shield	bottom & sides					C
		Firestop			10 in.		10 in.
								D
			WALL
* When using SLP or SL-D pipe, minimum clearances from the vent pipe to combus-					10 in.		12 in.
	tible materials at inside wall firestops are: Top: 2-1/2 in. (64 mm)
			Bottom: 1/2 in. (13 mm)
			Sides: 1 in. (25 mm)
Figure 8.1 Horizontal Venting Clearances To Combustible				A*	B*
	Materials
							A*	B*	C	D
				550TRSI-AUF		in.	40-3/4 24-3/8 39-3/4			23-3/8
				550TRSILP-AUF		mm	1035	619	1010	593
				* Shows center of vent framing hole for top or rear venting. The center of the
				hole is 1 in. (25 mm) above the center of the horizontal vent pipe.
				Figure 8.2	Wall Penetration
38			Heat & Glo • 550TRSI-AUF, 550TRSILP-AUF • 2079-980 Rev. N • 5/12