HEAT & GLO • PHOENIX42-IFT Installation Manual • 4096-901 Rev. A
• 02/18
22
C. Ceiling Firestop/Floor Penetration
Framing
A ceiling firestop (SLG-FS)
MUST
be used be-
tween floors and attics.
• Frame an opening 10 in. by 10 in. (254 mm
by 254 mm) whenever the vent penetrates a
ceiling/floor (see Figure 5.3).
• Frame the area with the same sized lumber as
used in ceiling/floor joist.
• The ceiling firestop may be installed above or
below the ceiling joists when installed with an
attic insulation shield (UNIV-AS2). It must be
under joists between floors that are not insulated.
Refer to Figure 5.4.
• Secure in place with nails or screws.
WARNING! Risk of Fire! DO NOT pack insulation
around the vent. Insulation must be kept back from
the pipe to prevent overheating.
Figure 5.3 Installing Ceiling Firestop
Figure 5.4 Installing the Attic Shield
D. Install Attic Insulation Shield
WARNING! Fire Risk. DO NOT allow loose ma-
terials or insulation to touch vent. Hearth & Home
Technologies requires the use of an attic shield.
The International Fuel Gas Code requires an attic
shield constructed of 26 gauge minimum steel that
extends at least 2 in. (51 mm) above insulation.
• Attic insulation shields must meet specified
clearances to combustible materials and be
secured in place.
• An attic insulation shield kit (UNIV-AS2) is
available from Hearth & Home Technologies.
Contact your dealer to order. Install attic insulation
shield according to instructions included with kit.
ATTIC ABOVE
10”
10”
INSTALL ATTIC INSULATION SHIELDS
BEFORE OR AFTER INSTALLATION OF VENT SYSTEM
CEILING FIRESTOP
INSTALLED BELOW CEILING
CEILING FIRESTOP
INSTALLED ABOVE CEILING