Astria.US.com
126650-01B
7
Figure 12 - Air Kit Installation
Secure to Collars with Metal Tape, Screws
or Straps (Min. of 1/4" x 20" in size)
Air Inlet
Location
Must Allow
For Bushes
or Snow
Vent Hood
Required for
Wall Installation
Air Inlet
Eyebrow
Vented Crawl Space (Check
Local Codes Before Installing in a
Vented Crawl Space)
VENTING INSTALLATION
OPTIONAL OUTSIDE AIR KIT (MODELS AK4 OR AK4F)
The installation of an outside air kit should be performed during
the rough framing of the fireplace due to the nature of it’s
location. Outside combustion air is accessed through and exterior
wall (AK4) or a vented crawl space (AK4F). See Figure 12 and
Accessories on page 16.
Avoid installing outside air eyebrow in areas where inlet opening
may be blocked by snow, bushes or other obstacles. It should also
be located beyond the reach of children.
CAUTION: Combustion air inlet ducts shall not
terminate in attic space.
The maximum height for the air vent can not exceed
3 feet below the flue gas outlet of the termination.
For further details on installation of outside air kit, please refer to
instructions included with air kit. For operating instructions, please
refer to your owner’s manual.
FIREPLACE INSTALLATION
Continued
8" Max.
“k” Factor
.84
1
1
/
2
" Typ.
1
1
/
2
" Typ.
Noncombustible
Hearth
Extension
“Z” Type Ember
Protector
Noncombustible
Hearth Extension
Ember Protector
Figure 11 - Raised Hearth Extension
NONCOMBUSTIBLE
HEARTH EXTENSION
52
1
/
2
" MIN.
(133.3cm)
36
1
/
2
" MIN.
(92.7cm)
8" MIN.
(20.3cm)
16" MIN.
(40.6cm)
Figure 10 - Hearth Extension
