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13
Vermont Castings EWF30
20008662
If the area above the ceiling is not an attic, position the
firestop spacer with the flange on the ceiling side and
the angled portion extending up into the hole.
If the area above the ceiling is an attic, position the
firestop spacer with the flange on the top of the framed
hole and the angled portion extending down into the
hole.
Firestop spacers are not available for, nor are they
required on vertical walls.
DO NOT put any sealant around the area where the
outer pipe slides through the firestop spacer. If you seal
this area, it may cause a fire hazard.
FP593
SR/C
11/20/97
Nails (4)
Attic Installation
Joist
Firestop Spacer
Joist
Firestop Spacer
Nails (4)
Ceiling Installation
FP593
Fig. 17 Firestop spacer installations.
Canadian Requirements
for Insulation Shield
In Canada, an attic insulation shield is required to pre-
vent attic insulaiton from contacxting the chimney sec-
tion. Framing dimensions for the chimney hole should
measure 14¹⁄₂” x 14¹⁄₂” (368 x 368 mm). An attic shield
MUST be installed on top of attic joists (above the floor
level). (Fig. 18)
Continue Installing Pipe to Complete Run
Continue attaching pipe sections to complete system
to next level always being careful that the pipe is firmly
snapped locked in place before proceeding to next pipe
section.
Chimney Supports
If chimney supports are required, they are installed the
same as elbows. Nail chimney support straps to adja-
cent structural framing, as shown on Figure 16. Bend
straps as necessary and make sure they are secure so
they will support the weight of the chimney. A chimney
support is 2¹⁄₂" (64mm) long when installed. Consider
this dimension when determining how many straight
chimney sections are needed.
NOTE: Chimney supports are generally used in long
runs in a chase installation.
Additional Ceilings
If you encounter additional ceilings, repeat same steps
required for first ceiling installation. See firestop illustra-
tion in Figure 17.
Penetrating the Roof
Run pipe to roofline. Since chimney system must be
vented to the out-of-doors, you must use an approved
CFM Corporation termination.
If a chase is used, refer to the installation manual pro-
vided with the termination cap.
Locate Chimney Centerpoint on Roof
Use same procedure detailed in locating center point of
the flue system.
Drive a nail up through roof at the center point. This will
determine center point on outside of the roof.
Cut and Frame Roof Hole
Size of roof hole varies with the type of chimney ter-
mination installed. Refer to installation instructions
provided with CFM Corporation chimney termination to
find correct size of roof hole.
IGF263
MBUF
5/9/96
Attic Insulation
Shield
Nails
(4 Required)
Attic Joist
Ceiling
Base
Flanges
FP263
Fig. 18 Attic shield installation (Canadian requirement).