Vent Clearances And Framing; Pipe Clearances To Combustibles; Install Support Brackets - Heat & Glo GATEWAY Owner's Manual

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Vent Clearances and Framing

A. Pipe Clearances to Combustibles
Vent clearances are per vent manufacturer's specifi ca-
tions. MUST be Listed B-Vent pipe.
WARNING! Risk of Fire! Maintain air space clearance to
vent. DO NOT pack insulation or other combustibles:
• Between ceiling fi restops
• Between wall shield fi restops
• Around vent system
Failure to keep insulation or other material away from
vent pipe may cause over heating and fi re.
B. Install Support Brackets
For Horizontal Runs - The PV-Flex vent system must
be supported at least every 5 feet to assure proper clear-
ances to combustibles is maintained.
To install support brackets for horizontal runs:
• Place the pipe supports around the vent pipe.
• Nail the pipe supports to the framing members.
PV-FLEX
1 in. MIN.
FLOOR
JOISTS
PLUMBERS STRAP
Figure 8.1 Supporting PV-fl ex
NOTE: A 1 inch clearance (B-Vent) or 1-1/2 inch
clearance (PV-FLEX) must be maintained between the
top of the pipe in a horizontal configuration and any
combustible materials. Otherwise, 1 inch clearance
should be maintained between the pipe and any
combustible materials.
Framing should be constructed
of 2 X 4 lumber or heavier.
Figure 8.2
FLOOR
1-1/2 in.
MIN.
1 in. MIN.
1 in. MIN.
Heat & Glo • GATEWAY • 288-900 Rev. AD • 3/13
Minimum Clearances from the Vent Pipe to
Combustible Materials
Vertical Sections. ............... 1 (25) ............... 1 (25)
Horizontal Sections
Top ....................................... 1 (25) ......... 1-1/2 (38)
Bottom ................................. 1 (25) ............... 1 (25)
Sides.................................... 1 (25) ............... 1 (25)
At Wall Firestops
Top ....................................... 1 (25) ......... 1-1/2 (38)
Bottom ................................. 1 (25) ............... 1 (25)
Sides.................................... 1 (25) ............... 1 (25)
For Vertical Runs - The vent system (B-Vent and PV-Flex)
must be supported every eight 8 feet to maintain clearanc-
es to combustibles 1 inch on all sides.
To install support brackets for vertical runs:
• Attach wall brackets to the vent pipe and secure the wall
bracket to the framing members with nails or screws.
1 INCH
MIN.
(25.4 mm)
4 INCH
ELBOW
FLUE
OUTLET
Figure 8.3 Installing Support Brackets
WARNING
Fire Hazard
Keep loose materials or blown insulation from
touching the vent pipe.
• National building codes recommend using
attic shield to keep loose materials/ blown
insulation from contacting vent.
• Hearth & Home Technologies requires the use
of an attic shield.
B-Vent PV-Flex
Inches (mm) Inches (mm)
WALL STUD
WALL BRACKET
4 INCH PIPE
B-VENT
8 FT.
(2.4 mm)
27