Desa M36B Owners Manual And Installation Manual page 10

Listed
Vent Cap
Maintain
Listed
Clearance
60°
8'
Position
Firestop
12' Min.
EXAMPLE 1
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.
Note: Before connecting this appliance to an
existing vent system consult with your local
architect, planner or building official.
WARNING: This appliance
must be properly connected
to a system and must not be
connected to a chimney flue
servicing a separate solid fuel
burning appliance.
10
VeNtING INstallatIoN
Maintain
Listed
Clearance
Support Each
Lateral At
Least Every
6 Feet
6'
Position
Firestop
Maintain
Listed
Clearance
Figure 10 - Typical B-Vent Configuration
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Continued
Listed
Vent Cap
Maintain
Listed
Clearance
45°
12' Min.
Position
Firestop
45°
Maintain
Listed
Clearance
EXAMPLE 2
Lowest
Listed
Discharge
Vent Cap
Opening
Listed
Gas
Vent
H (Min)
Height
From Roof
Roof Pitch
Flat to 6/12
6/12 to 7/12
Over 7/12 to 8/12
Over 8/12 to 9/12
Over 9/12 to 10/12
Over 10/12 to 11/12
Over 11/12 to 12/12
Over 12/12 to 14/12
Over 14/12 to 16/12
Over 16/12 to 18/12
Over 18/12 to 20/12
Over 20/12 to 21/12
Figure 11 - B-Vent Terminations
Listed
Vent Cap
Maintain
Listed
Clearance
45°
10'
Maintain
Listed
Clearance
EXAMPLE 3
8 Ft. Min.
x
12
Roof Pitch x/12
Listed Clearance
H (Min.)
Feet
1.0
1.25
1.5
2.0
2.5
3.25
4.0
5.0
6.0
7.0
7.5
8.0
108795-01V
12' Min.
Meter
ax 0.30
0.38
0.46
0.61
0.76
0.99
1.22
1.52
1.83
2.13
2.27
2.44