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15628-0-0903
FRAMING AND FINISHING
Installing Support Brackets (Figure 24)
A horizontal pipe support MUST BE used for each 3 feet of
horizontal run. The pipe supports should be placed around 6-5/8
inch diameter pipe and nailed in place to framing members. There
MUST BE a 2 inch clearance to combustibles above 6-5/8 inch
diameter pipe and elbows and 1 inch clearance on both sides and
bottom of 6-5/8 inch to combustibles on all horizontal pipe
sections and elbows.
Vertical runs of this vent systems must be supported every 4 feet
above the appliance flue outlet by wall brackets attached to the 6-
5/8 inch vent pipe and secured with nails or screws to structural
framing members.
Figure 24
Installing Firestops (Figures 25, 26, 27 and 28)
Firestops are required for safety whenever the vent system passes
through an interior wall, an exterior wall, or a ceiling. These
firestops act as a firebreak heat shield and as a means to insure that
minimum clearances are maintained to the vent system.
Horizontal runs in the vent system which pass through either
interior or exterior walls, require the use of wall firestops on both
sides of the wall through which the vent passes.
Position the firestops on both sides of the 10 inch x 10 inch hole,
previously cut. Secure with nails or screws. Continue the vent run
through the firestops. (See Figure 25)
Figure 25
Vertical runs of this system which pass through ceilings require
the use of ONE (1) ceiling firestop at the hole in each ceiling
through which the vent passes.
Position a plumb bob directly over the center of the vertical vent
component and mark the ceiling to establish the center point of
the vent. Drill a hole or drive a nail through this center point and
check the floor above for any obstructions such as wiring or
plumbing runs. Reposition the appliance and vent system, if
necessary, to accommodate ceiling joists and/or obstructions.
Cut a 10 inch x 10 inch hole through the ceiling, using the center
point previously marked. Frame the hole with framing lumber the
same size as the ceiling joists. (See Figure 26 ) If the area above
the ceiling is NOT an attic, position and secure the ceiling firestop
(SD-963) on the ceiling side of the previously cut and framed
hole. (See Figure 27) If the area above the ceiling IS an attic,
position and secure the firestop on top of the previously framed
hole. (See Figure 28)
NOTE: Remove insulation from the framed area in the attic
before installing the firestop and/or vent stop and/or vent pipes.
Figure 26