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117437-01B8
Figure 9 - Clearances for Combustible
Mantels
Figure 8 - Side Clearances for
Combustible Mantels
PRE-INSTALLATION
PREPARATION
Continued
1
1
/
2
"
(3.8 cm)
3
1
/
2
"
(8.9
cm)
Outer
Surround
Combustible
Material May
Be Used
Perpendicular
Side Wall
5
1
/
4
"
(13.3 cm)
1
3
/
4
"
(4.4 cm)
To Fireplace
Opening
10" (25.4 cm)
33°
Safe
Zone
Ref. Mantel Depth Ref.
Mantel from
Top of Louver
Opening
1 16" (40.6 cm) A 18" (45.7 cm)
2 14" (35.6 cm) B 16" (40.6 cm)
3 12" (30.5 cm) C 14" (35.6 cm)
4 10" (25.4 cm) D 12" (30.5 cm)
5 8" (20.3 cm) E 10" (25.4 cm)
6 4" (10.2 cm) F 8" (20.3 cm)
7 2" (5.1 cm) G 6" (15.2 cm)
C
B
A
D
E
F
G
Top of Louver
Opening
3
2
1
4
5
6
7
Stud Wall
4" B-Vent
Flue Pipe
2 x 4 Header
at 1" Min.
Clearance
INSTALLATION
PRECAUTIONS
NOTICE: Failure to follow these in-
structions 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 modication of the venting sys-
tem (Do not cut or alter vent components)
• Installation of any component part not manu-
factured or approved by DESA.
• Installation other than as instructed by these
instructions
WARNING: Read all instruc-
tions 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 air-
space clearance to combustibles
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.
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
building code authority for specic requirements
or in absence of local codes, follow Section 7.0
of the current National Fuel Gas Code NFPA
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 ue servicing a solid fuel burn-
ing appliance.