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www.desatech.com
117437-01
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 standad B-type
vent installation.
Standing codes requirements concerning B-type vent installations
may vary within your state, province or local codes juristdition.
Therefore, it is recommended that you check with your local
building code authority for specifi c requirements or in absence of
local codes, follow Section 7.0 of the current
National Fuel Gas
Code NFPA No. 54/ANSI Z223.1
or in Canada with
CAN/CSA
B149 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 fl ue 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 are typical of most B-vent
installations and code practices.
WARNING:
This gas fi replace and vent assembly
must be vented directly to the outside. The venting
system must NEVER be attached to a chimney serv-
ing a separate solid fuel burning apppliance.
NOTICE: Failure to follow these instructions will void
the warranty.
INSTALLATION PRECAUTIONS
• 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
• Unautorized modifi cation of the venting system (Do not cut
or alter vent components)
• Installation of any component part not manufactured or ap-
proved by DESA.
• Installation other than as instructed by these instructions
WARNING: B-type
vent pipe airspace clearance
to com
bustibles is 1” on all sides.
Where the vent pipe
passes through a vertical wall a listed thimble approved
for use with B-type vent must be used
.
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.
INSTALLATION PRECAUTIONS
12' Min.
8'
12' Min.
12' Min.
10'
6'
EXAMPLE 1
EXAMPLE 2 EXAMPLE 3
45°
45°
60°
45°
Maintain
Listed
Clearance
Maintain
Listed
Clearance
Listed
Vent Cap
Support Each
Lateral At
Least Every
Six (6) Feet
Maintain
Listed
Clearance
Position
Firestop
Maintain
Listed
Clearance
Position
Firestop
Maintain
Listed
Clearance
Listed
Vent Cap
Position
Firestop
Maintain
Listed
Clearance
Maintain
Listed
Clearance
Listed
Vent Cap
Figure 10 - Typical B-Vent Confi guration
VENTING INSTALLATION