Vent Clearances And Framing; Vent Clearances To Combustibles - Heat&Glo 6KX-CU Installation Manual

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Vent Clearances and 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.
WARNING! Risk of Fire! Elbow heat shield required
when V = 2 ft. or less. Clearances to combustibles must
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be maintained. See Figure 4.11.
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)
Heat
3 in. (76 mm)
Shield
Elbow
top clearance min.
Heat
Shield
1 in. (25 mm)
clearance around
vertical sections
V1
Firestop
Warning! Risk of Fire: Elbow heat shield required with 3 inch top
clearance or V1 of 2 ft. or less.
Heat
Shield
Firestop
* When using SLP pipe, minimum clearances from the vent pipe to combustible
materials at inside wall firestops are:
Figure 5.1 Horizontal Venting Clearances To Combustible
Materials
3 in. (76 mm)
top clearance *
Heat
Shield
1 in. (25 mm)
clearance
Wall
bottom & sides
Shield
WALL
3 in. (76 mm)
top clearance min.*
Heat
Shield
1 in. (25 mm)
Wall
clearance
Shield
bottom & sides
WALL
Top: 2-1/2 in. (64 mm)
Bottom: 1/2 in. (13 mm)
Sides: 1 in. (25 mm)
Heat & Glo • 6KX, 6KX-LP, 8KX, 8KX-LP Installation Manual • 2583-980 • Rev. C • 5/23
Elbow Heat Shield
WARNING! Risk of Fire! Elbow heat shield MUST be
installed if required. Overheating will occur.
Top vented appliances: Installation of the elbow heat
shield is required when the clearance to combustible ma-
terial above the first 90 degree vent elbow is three inches
or less. See Figure 5.1.
Note: A minimum of three inches clearance from the top
of the pipe to any combustible material must always be
maintained.
To Install Elbow Heat Shield:
1. Remove the elbow heat shield from the shipping posi-
tion by removing screws.
2. Fasten the shield in place using the four pilot holes.
The shield should be oriented such that the dimension
(longest dimension) is running in the same direction
the elbow is pointing. The shield should be centered
directly above the elbow, and positioned so that it cre-
ates a 1/2 inch airspace between the shield and the
combustible surface. See Figure 5.2.
CORRECT
COMBUSTIBLE SURFACE
HEAT SHIELD
90º ELBOW
SCREW
3 in.
(76 mm)
Figure 5.2 Elbow Heat Shield Installation
INCORRECT
DIRECTION
UP
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