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20
Safety Instructions
Operating Instruction
Troubleshooting Tips
Customer Service
EXHAUST
REQUIREMENTS
Number
of
90°
Elbows
Weather
Hood
Type
Recommended
Maximum
length
of
4"
(10.2
cm)
diameter
rigid
metal
duct
Maximum
length
of
4"
(10.2
cm)
diameter
flexible
metal
duct
NOTE
:
Deduct
6
feet
(1.8
m)
for
each
additional
elbow.
Use
Only
for
Short
Run
Installations
0
1
2
3
4
65
feet
(19.8
m)
55
feet
(16.8
m)
47
feet
(14.3
m)
36
feet
(11.0
m)
28
feet
(8.5
m)
45
feet
(13.7
m)
35
feet
(10.7
m)
30
feet
(9.1
m)
25
feet
(7.6
m)
20
feet
(6.1
m)
55
feet
(16.8
m)
47
feet
(14.3
m)
41
feet
(12.5
m)
30
feet
(9.1
m)
22
feet
(6.7
m)
35
feet
(10.7
m)
27
feet
(8.2
m)
21
feet
(6.4
m)
17
feet
(5.2
m)
15
feet
(4.5m)
0
1
2
3
4
4"
(10.2
cm)
4"
(10.2
cm)
2-1/2"
(6.35
cm)
[
Table.
1]
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