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C. Clearances to Combustibles
Top Flue - Single Wall
Pipe
Top Flue - Single Wall
chimney connector heat
shield
, vertical flue
1
collar h.s. installed
Top Flue - Double Wall
Pipe
Alcove Double Wall,
Top Flue, Ceiling Exit
Top Flue, 90° Elbow
Wall Exit
Rear Flue Backwall
Exit
For Factory Alcove: 6" diameter listed Double wall air insulated connector pipe with UL103 HT listed factory built Class A Chimney or
Masonry chimney. Maximum depth Alcove shall be no more than 48" (1219 mm) and the referenced Alcove clearances. Canada must
comply with CAN/ULC-S269 M87 for the 650° factory built chimney.
*Follow pipe manufacturers clearances as required.
1. The connector pipe heat shield must extend 36" (914 mm) above flue collar.
2. The Intrepid Flexburn was not tested for clearances to protected surfaces. For clearance reduction methods, refer to NFPA 211 or
Local Codes.
Top Vent Installation
Side View
G
A
Alcove Top View
Center Dimension
40-1/2"
1029mm
Figure 3.9
!
Fire Risk
• Comply with all minimum clearances to
combustibles as specified.
• Failure to comply may cause house fire.
10
Minimum Clearances to Combustible Materials using 6" Connections
A
B
12"
14"
(305mm)
(356mm)
(381mm)
8"
10"
(203mm)
(254mm)
(381mm)
10"
11-1/2"
(254mm)
(292mm)
(280mm)
12"
13-1/2"
(305mm)
(343mm)
(432mm)
11"
13"
(280mm)
(330mm)
(381mm)
13"
N/A
(330mm)
(381mm)
Top View
A
B
D
Corner Installation
E
F
WARNING
Vermont Castings • Intrepid FlexBurn
C
D
15"
22-1/2"
(572mm)
(165mm)
15"
22-1/2"
(572mm)
(152mm)
11"
18"
(457mm)
(152mm)
17"
24"
(610mm)
15"
22-1/2"
(572mm)
15"
22-1/2"
(572mm)
Center Dimension
C
Figure 3.10
Installation Manual_R2 • 2018 - ___ • 07/18
®
E
F
6-1/2"
12"
58-1/2"
(305mm)
(1486mm)
6"
11-1/2"
58-1/2"
(292mm)
(1486mm)
6"
11"
58-1/2"
(280mm)
(1486mm)
37-1/2"
N/A
N/A
(953mm)
58-1/2"
N/A
N/A
(1486mm)
58-1/2"
N/A
N/A
(1486mm)
Rear Flue Horizontal - Wall Exit
Top and Side View
25-1/2"
648 mm
Top Flue 90° Elbow - Wall Exit
Side View
H*
G
Appliance to
Ceiling Clearance
G
H*
N/A
N/A
N/A
N/A
18"*
(457mm)
N/A
A
3-90-30007345i
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