Vent Clearances And Vent Framing; Vent Clearances To Combustibles - Majestic Quartz Series Installation Manual

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Vent Clearances and Vent Framing

A. Vent Clearances to Combustibles
WARNING! Risk of Fire! Maintain air space clearance
to vent. DO NOT pack insulation or other combustibles:
• Between ceiling firestops
• Between wall shield firestops
• Around vent system
Failure to keep insulation or other material away from
vent pipe could cause overheating and fire.
Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm).
• DVP heat shield - designed to be used on a wall 4 in. to 7-1/4 in. (102 mm to 184
mm) thick.
• If wall thickness is less than 4 in. the existing heat shields must be field trimmed. If
wall thickness is greater than 7-1/4 in. a DVP-HSM-B will be required.
• 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).
• 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.
(DVP-SLP Pipe Shown)
SLP Pipe
Heat
Shield
3 in. (76 mm)
top clearance
1 in. (25 mm)
clearance around
vertical sections
Heat
DVP Pipe
Shield
* When using SLP pipe, minimum clearances from the vent pipe to combustible materi-
als at inside wall firestops are:
Figure 5.1 Horizontal Venting Clearances To Combustible
Materials
Majestic • QUARTZPLA36IN / QUARTZPLA36IL Installation Manual • 2643-980 Rev. B • 7/22
3 in. (76 mm)
top clearance *
Heat
Shield
1 in. (25 mm)
clearance
Wall
bottom & sides
Shield
Firestop
WALL
3 in. (76 mm)
top clearance *
Heat
Shield
1 in. (25 mm)
Wall
clearance
Shield
bottom & sides
Firestop
WALL
Top: 2-1/2 in. (64 mm)
Bottom: 1/2 in. (13 mm)
Sides: 1 in. (25 mm)
Elbow and Offset Clearances to Combustibles
1 IN. MIN.
ALL SIDES
3 IN. VERTICAL CLEARANCE
HORIZONTAL PIPE SECTIONS
1 IN. MIN.
ALL SIDES
= NO COMBUSTIBLES ALLOWED
IN SHADED AREA
Figure 5.2 Clearances from Vent to Combustible Framing
Materials
1 IN. MIN.
ALL SIDES
1 IN. MIN. HORIZONTAL
CLEARANCE
VERTICAL PIPE SECTIONS
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