Heat & Glo • GEM-36B • 2095-900 Rev. H • 3/06
17
C. Vertical Penetration Framing
Installing the Ceiling Firestop
•
Frame an opening 10 inches by 10 inch-
es whenever the vent system pene-
trates a ceiling/floor (see Figure 6.3).
•
Frame the area with the same sized lum-
ber as used in ceiling/floor joist.
•
When installing a top vent vertical termi-
nation appliance the hole should be di-
rectly above the appliance, unless the
flue is offset.
•
Do not pack insulation around the vent.
Insulation must be kept away from the
pipe.
Figure 6.3
ATTIC
ABOVE
A
B
WARNING
Fire Hazard
Keep loose materials or
blown insulation from touch-
ing the vent pipe.
Installing Attic Shield
Note:
An additional ceiling firestop is not
required if attic shield is used.
•
Frame opening for attic shield.
•
Attic shield may be installed above or
below ceiling (see Figure 6.4).
•
Secure with three fasteners on each
side.
•
Fold tabs at top of attic shield in toward
vent pipe. Tabs must keep vent pipe
centered within shield.
•
Field construct additional shield height
if insulation is deeper than height of at-
tic shield.
Figure 6.4 Installing the Attic Shield
•
National building codes recommend us-
ing attic shield to keep loose materials/
blown insulation from contacting vent.
•
Hearth & Home Technologies requires
the use of an attic shield.
A B
10 in. 10 in.
DVP
PIPE
3 FASTENERS
PER SIDE
BEND TABS IN
AROUND PIPE
ATTIC SHIELD INSTALLED
BELOW CEILING
ATTIC SHIELD INSTALLED
ABOVE CEILING
