Heatiator C40 - Manual (Page 46)

Page 46 Heatilator • Constitution EPA Fireplace • 480-1091D 4/20/11
ROOM ABOVE (non-insulated ceiling)
ATTIC ABOVE (insulated ceiling)
B
A
Ceilng firestop
attached to bottom
of framing
Ceiling firestop
attached to top of
framing
When attic insulation
shield not used
Note: Use same dimensional lumber for framing
ceiling firestop and joists.
2 in. (51mm)
clearance
2 in. (51mm)
clearance
Figure 8.7 Installing the Ceiling Firestop
Catalog #
A B
in. mm in. mm
FS338 14-1/2 368 14-1/2 368
FS339 14-1/2 368 18-3/8 467
FS340 14-1/2 368 23 584
Wire Ties
Wire Ties
4" Flex
Figure 8.6 Installing Flex Pipe
CAUTION! Risk of Fire! Ceiling firestops must be used
whenever the chimney penetrates a ceiling/floor.
• Chase construction requires ceiling firestops at each floor
or every 10 ft (3.05 m) of clear space.
• The ceiling firestop slows spread of fire and reduces cold
air infiltration.
• Install a ceiling firestop whenever chimney penetrates
ceiling/floor.
• Mark and cut an opening in ceiling as shown in Figure 8.7.
• Frame the opening with the same size lumber used in
the ceiling joists.
• Nail the ceiling firestop to the bottom of the ceiling joists
when there is a room above.
• Use an attic insulation shield if the ceiling is insulated.
The ceiling firestop may then be attached above or below
the joists.
WARNING! Risk of Fire! DO NOT seal area between
firestop opening and chimney pipe except where they
enter the attic or leave the warm air envelope of the
home (use 600° F sealant).
F. Install Ceiling Firestops