PAGE 17
OM-9703
Date Printed: Thursday, July 05, 2007
Revision Date: March 6, 2006
WARNING
Always refer to current local, state or provincial codes and vent manufacturing
specifications for a safe and efficient installation.
Caution: Each of the vent manufacturers have their own method of connection. DO NOT MIX B-VENT
FROM VARIOUS MANUFACTURERS. B-vent must be used when passing through a wall, ceiling, or roof.
9703 - FLUE VENTING
Rain Cap
Storm Collar
Roof Jack
Flashing
Min. 3’
B Vent
Pipe Collar
See chimney manufacturers specifications and
local building codes for proper clearances
6” Min. on
single wall pipe
B Vent
or single wall
If single wall pipe is
used, wall timble must
be used.
Min. height must be at least
twice the lateral distance
6” Min.
12” Min. Recomended
60”
ALCOVE INSTALLATION
THROUGH THE CEILING INSTALLATION
Alcove Requirements
Maximum depth of 30”
Minimum width of 50”
Minimum height of 60”
Max alcove
depth 30”
Use gas vent cap
Flue must be sealed around pipe
at the top of the chimney.
Blaze King requires the
chimney to be relined
(
4” aluminum flex pipe is sufficient)
Shroud cannot touch
combustibles
27” Top of
unit to mantle
Apron
Distance to floor (DF)
Distance of protection (DP)
Distance
From Apron
To Floor (DF)
Floor Protection
Must Extend Out
From Apron (DP)
0”
15”
1”
13”
2”
10”
3”
7”
4”
5”
5”
2”
6”
0”
R=2.2
R=1.1
Note: If distance to floor is less than 2” the R-value
must be greater or equal to 2.2. If distance to the
floor is greater than 2” an R-vlaue of 1.21 is
sufficient for the 6” region
6”
9”
FREESTANDING UNITS
INSERT UNITS
Minimum Fireplace Opening
22” high x 15” deep x 34” wide
Equivalent Orifice Sizes at High Altitudes (Includes 4% input reduction for each 1,000 feet)
NATURAL GAS
ORIFICE SIZE REQUIRED AT OTHER ELEVATIONS
This chart is based on gas with
1000 BTU Per Cubic Foot.
Orifice size at for 9703 at:
Sea Level
2000
3000
4000
5000
6000
7000
8000
9000
10000
FRONT #1
48
49
49
50
50
51
51
51
52
52
BACK #2
33
34
34
35
35
36
36
36
37
37
PROPANE
ORIFICE SIZE REQUIRED AT OTHER ELEVATIONS
This chart is based on gas with
2500 BTU Per Cubic Foot.
Orifice size for 9703 at:
Sea Level
2000
3000
4000
5000
6000
7000
8000
9000
10000
FRONT #1
62
63
63
64
64
65
65
65
66
66
BACK #2
52
53
53
54
54
55
55
55
56
56
Check with local gas company on
BTU content
and correct orifice accordingly.
ORIFICE SIZING TABLE
Chimney must
be large enough
to accept a
4 1/2” OD lines.
