35009-2-1015
Page 28
FRAMING AND FINISHING
Installing Support Brackets
Install a horizontal pipe support used for each 3 feet of horizontal
run to framing members. Allow 3 inch clearance to combustibles
above 8 inch diameter pipe and elbows and 1 inch clearance on
both sides and bottom.
Support vertical runs of this vent systems every 4 feet using wall
brackets attached to the vent pipe and secured with nails or screws
to structural framing.
Note:
Maintain minimum 2 inch clearance between stud
wall and outside diameter of pipe within the first 12 inches
above flue outlet.
Figure 49
Installing Firestops
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 Firestops
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 framed hole, previously
cut. Refer to
Figures 51 - 53
on Page 29 for sizing information.
Secure firestop with nails or screws. The heat shields of the firestops
MUST BE placed towards the top of the hole. Continue the vent
run through the firestops.
NAILS, 4 REQUIRED
Figure 50
NOTE:
SD58DVAWTEC Wall thimble is necessary to maintain
the required three inches of clearance to combustibles above
the vent. Framed hole dimensions shown above are for this wall
thimble.
