Superiorfireplaces.US.com
126741-01C
8
INSTALLATION PRECAUTIONS
NOTICE: Failure to follow these instructions will void
the warranty.
• Wear gloves and safety glasses for protection
• Use extreme caution when using ladders or when on roof tops
• Be aware of electrical wiring locations in walls and ceilings
The following actions will void the warranty on this product:
• Installation of any damaged venting component
• Unauthorized modification of the venting system (Do not cut or
alter vent components)
• Installation of any component part not manufactured or approved
by IHP
• Installation other than as instructed by these instructions
WARNING: Read all instructions completely and
thoroughly before attempting installation. Failure to
do so could result in serious injury, property damage
or loss of life.
WARNING: B-type vent pipe airspace clearance to
combustibles is 1" on all sides. Where the vent pipe
passes through a vertical wall a listed thimble ap-
proved for use with B-type vent must be used (38FTS
recommended).
VENTING INSTALLATION
A 4" B-type venting system must be connected to the appliance for
venting to the outside of the building.
The following section is provided as a guide to install a standard
B-type vent installation.
Standing code requirements concerning B-type vent installations
may vary within your state, province or local codes jurisdiction.
Therefore, it is recommended that you check with your local build-
ing code authority for specific requirements or in absence of local
codes, follow Section 7.0 of the current National Fuel Gas Code
NFPA 54/ANSI Z223.1 for Category I systems using double wall
B-1 vent pipe.
This gas appliance must be vented to the outdoors only and may not
be terminated into an attic space or into a chimney flue servicing a
solid fuel burning appliance.
This appliance may be vented through a manufactured chimney liner
system if all are listed, inspected and approved by local codes and/
or building authorities.
The examples shown in Figure 10, page 9, are typical of most B-vent
installations and code practices.
WARNING: This gas fireplace and vent assembly
must be vented directly to the outside. The venting
system must NEVER be attached to a chimney serving
a separate solid fuel burning appliance.
Example 1:
Shows the minimum allowable system height and lateral
offset for a 60° or greater inclination. Code specifies that offsets at 60°
or greater are considered horizontal and must follow the 75% rule for
lateral to total vertical system height. Codes also allows only one offset
in the total system when at 60° or greater. The total vertical height in
this example represents the minimum height of 8 feet and therefore
the allowable lateral is 6 feet when the 75% rule applies. If the lateral
length must exceed 75% then the system must be sized in accordance
with the Category I venting tables.
Example 2:
Shows multiple offsets each at 45° of inclination. Multiple
offsets are permitted if they do not exceed 45° of inclination. The
total lengths of the two offsets are not required to meet the 75% rule.
Example 3:
Shows a single offset at 45° of inclination and therefore
the lateral length at 10 feet of offset does not have to meet the 75%
allowable rule.
In each case the offsets must be supported and firestops must be
positioned wherever the vent must pass through a sub-floor, ceiling
joist or an attic overhang. The vent pipe must terminate vertically
into a listed type vent cap and extend a sufficient height through an
approved roof flashing, roof jack or a roof thimble. At all points the
listed clearances must be maintained.
Vent terminations must be located in accordance with height and
proximity rules of NFPA No. 54. These rules apply to vents at 12"
diameter or less and require a minimum height in accordance with
the roof pitch and a minimum of 8 foot distance from a vertical wall
or obstruction (see Figure 11, page 9).
If venting horizontally through a side wall becomes necessary, a listed
thimble approved for use with B-type vent must be used. Check with
your local codes before venting through a side wall.
