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10
VENTING INSTALLATION
Continued
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.
Some codes areas allow the use of existing B-type vent systems if
the system is at or above the recommended diameter of the flue, in
this case 6".
The flue connection must be made using listed B-type connectors
and the existing system must be code inspected for damage and
proper installation.
It is not recommended that this appliance be common vented with an
existing gas burning appliance. However, if it becomes necessary to
common vent this appliance, the venting system must be sized and
configured in accordance with the common venting guides Appendix
G of the current National Fuel Gas Code ANSI Z223.1/NFPA 54, or the
Natural Gas and Propane Installation Code, CSA B149.1.
NOTE:
Before connecting this appliance to an existing vent system or
a common venting system consult with your local architect, planner
or building official.
Lowest
Discharge
Opening
Listed
Vent Cap
8 Ft. Min.
Roof Pitch x/12
Listed Clearance
12
x
Listed
Gas
Vent
H (Min)
Height
From Roof
Figure 11 - B-Vent Terminations
Roof Pitch
H (Min.)
Feet
Meter
Flat to 6/12
1.0
0.30
6/12 to 7/12
1.25
0.38
Over 7/12 to 8/12
1.5
0.46
Over 8/12 to 9/12
2.0
0.61
Over 9/12 to 10/12
2.5
0.76
Over 10/12 to 11/12
3.25
0.99
Over 11/12 to 12/12
4.0
1.22
Over 12/12 to 14/12
5.0
1.52
Over 14/12 to 16/12
6.0
1.83
Over 16/12 to 18/12
7.0
2.13
Over 18/12 to 20/12
7.5
2.27
Over 20/12 to 21/12
8.0
2.44
CHECKING FOR PROPER VENTING
After completing and checking electrical, gas and vent connections,
follow the lighting instructions and allow the main burner to run for
approximately 5 minutes. Hold a lighted match or cigarette near the
top edge of fireplace opening and play it along entire length of open-
ing
(see Figure 12)
. Proper venting should tend to draw the flame or
smoke into the appliance. Improper venting or escaping of spillage of
burned gas, is indicated when the match flickers or goes out. Smoke
from a cigarette will also tend to disperse away from the appliance.
If the appliance is found to be improperly venting, shut it off and
notify your installer or a qualified service agency to inspect the vent-
ing system.
Figure 12 - Checking for Spillage
Check this area
along entire top
edge of fireplace
opening. Smoke
or flame should
be drawn into
appliance opening.
WARNING: This appliance must be properly con-
nected to a system and must not be connected to a
chimney flue servicing a separate solid fuel burning
appliance.
NOTICE: This appliance is equipped with a vent safety
shutoff switch which will shut down the appliance in
the case of a venting problem. Do not bypass the vent
safety switch. If the appliance should shut down, con-
tact a qualified installer, service agency or your gas
supplier to have the vent inspected before operating.
