WR / WC Series Woodburning Fireplace
Continue installing the pipe as required until pipe is installed up through the ceiling. At this point, you must install a firestop spacer.
Installing the Firestop Spacer
in the Ceiling Hole
A firestop spacer is used to keep pipe spaced properly and required for safety.
Nail the firestop spacer (at each corner) to the framing members of the ceiling hole. NOTE: A firestop spacer is not required at the roof.
Hole sizes listed in Figure 13 for angled firestop spac- ers provide minimum required air space to chimney pipe for ceiling thickness up to 8" (203 mm). When combined thickness of ceiling material, ceiling joists and flooring material exceeds 8" (203 mm), adjustments must be made in framing to assure that minimum air spaces to chimney are maintained.
Pipe Section
Pipe
Rim
Hem
Lance
Pipe
Rim
FP558
Fig. 16 Install pipe, listening for the
Proper Firestop Spacer Installation
Figure 18 shows different installation procedures for both an area that is an attic and an area that is not an attic.
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 re- quired 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.
Elbow Strap
Angled Strap
FP270/271
Support Structure
Elbow Strap (must be tight)
Ceiling Hole
Framing
Angle Firestop
Chimney Support Strap (must be tight)
Canadian Requirements
for Insulation Shield
Fig. 17 Attach straps to a structural framing member.
In Canada, an attic insu- lation shield is required to prevent attic insulation
Attic Installation | Ceiling Installation |
from contacting the chim- ney section. NOTE: If the attic insulation shield is used, the firestop is not required in the attic instal- lation. Framing dimen- sions 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. 19)
Nails (4)
Firestop
Spacer
Joist
NOTE: If the attic insulation shield is used, the firestop is not required in the attic installation.
Fig. 18 Installing firestop spacer.
Joist
Firestop
Spacer
Nails (4)
FP593
12 | 20014528 |
