DVS -30-2 - Manual (Page 21)

13369-1-0203 Page 21
DVS-36 & DVS-42 FRAMING AND FINISHING
Installing Support Brackets (Figure 34)
A horizontal pipe support MUST BE used for each 3 feet of
horizontal run. The pipe supports should be placed around 8 inch
diameter pipe and nailed in place to framing members. There
MUST BE a 3 inch clearance to combustibles above 8 inch
diameter pipe and elbows and 1 inch clearance on both sides and
bottom of 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 8
inch vent pipe and secured with nails or screws to structural
framing members.
STUD WALL STUD WALL
FLUE OUTLET FLUE OUTLET
(25.4mm)
PIPE STRAP PIPE STRAP
48"
(1219mm)
1" MIN. 1" MIN.
Figure 34
WALL FIRESTOP
HOLE IS OFF-SET TOWARDS HOLE IS OFF-SET TOWARDS
BOTTOM OF WALL OPENING. BOTTOM OF WALL OPENING.
12 3/8 12 3/8
10 3/8 10 3/8
Figure 35
Installing Firestops (Figures 35, 36, 37 and 38)
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.
Cut a 10-3/8 inch x 12-3/8 inch hole in wall. Position firestop (SD-
1249) on interior side of wall for 10-3/8 inch x 12-3/8 inch hole.
Attention: Wall firestop hole is off-set towards bottom of wall
opening. Secure with nails or screws. Continue the vent run
through the firestop. (See Figure 35)
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 fireplace and vent system, if
necessary, to accommodate ceiling joists and/or obstructions.
10 1/2" 10 1/2"
267mm 267mm
10 1/2" 10 1/2"
267mm
CEILING BELOW CEILING BELOW
NEW FRAMING NEW FRAMING
EXISTING CEILING JOISTS EXISTING CEILING JOISTS
Figure 36
10 1/2" 10 1/2"
267mm
CEILING FIRESTOP CEILING FIRESTOP
NAILS, 4 REQUIRED NAILS, 4 REQUIRED
10 1/2" 10 1/2"
267mm
Figure 37