7
Alpine Supply Company 42 Direct Vent Gas Fireplace
VENTING REQUIREMENTS
5) Non-combustible material may be brought up to the
top and sides of the appliance and be covered with
ceramic tile, brick, rock, or other non-combustible
finishing materials.
6) Steel studs should be used where the clearance from
the vent to combustible materials cannot be main-
tained.
Figure 8– Clearance to Venting
VENTING PLANNING
The ASC-42 uses Simpson Duravent Co-Axial venting
systems. The inner tube vents products of combustion
away from the appliance, while the outer tube draws
outside air into the combustion chamber. This is a closed
system and uses no air from the interior of the home for
combustion.
Never attach this fireplace vent to another vent serving
another appliance. Each direct vent gas appliance must
use its own separate venting system. Common venting
systems are prohibited for use with this appliance.
Always vent the fireplace to the outside of the building.
Never vent into a garage or enclosed area.
This venting system, in combination with the ASC-42
Direct Vent Gas Fireplace, has been tested and listed as a
direct vent gas fireplace heater by I.T.S. The location of
the termination cap must conform to the requirement in
the Vent Termination Locations diagram on page 8 of
this manual.
Before proceeding with installation, carefully examine
the chart on page 8 of this manual for options regarding
proper placement of the vent termination.
SIMPSON DURAVENT
VENTING COMPONENTS LIST
(4”x 6 5/8”)
Stock # Description
0945 45 Degree Elbow
0990 90 Degree Elbow
11053 Storm Collar
0943 Standard Flashing 0/12 – 5/12
0943S Steep Flashing 6/12 – 12/12
11088 Wall Strap
11063 Firestop Spacer
0917 17” - 24” Adjustable pipe
0906 12” pipe
0904 24” pipe
0903 36” pipe
0902 48” pipe
0991 Vertical Termination Cap
0984 Horizontal Termination Cap
0942 Wall Thimble
0982 14” Snorkel Termination Cap
0981 36” Snorkel Termination Cap
0950 Vinyl Siding stand-off
Parts not supplied by Simpson
09364 Vent Guard
09366 Masonry wall stand-off
In all cases, adequate combustion and ventilation air must
be available for the fireplace. Never block the termination
cap. Make sure foliage does not grow around the termina-
tion cap. In all cases, follow the clearances listed on page
8 of this manual.
NOTE: Never connect this gas appliance to a chimney
flue serving a separate solid-fuel burning appliance.