FRAMING AND FINISHING
Installing Support Brackets (Figure 38)
Ahorizontal pipe support MUSTBE used for each 3 feet of horizontal run. The pipe supports should be placed around the pipe and nailed in place to framing members. There MUST BE a 3 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 pipe 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.
WALL FIRESTOP
Figure 39
Figure 38
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 (Figure 39)
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 Figure 24 on page 20 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.
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