Installation, Recommended heights for woodstove flue – Hampton Direct H300 User Manual
Page 14
Hampton H300 Cast Freestanding Woodstove
14
INSTALLATION
RECOMMENDED HEIGHTS FOR
WOODSTOVE FLUE
Simple rules on draft. See Table 1.
1) At sea level minimum height is 12'
straight.
2) Add the following vertical height to compen-
sate for:
45 deg. elbow = 1 ft.
90 deg. elbow = 2 ft.
"T"
= 3 ft.
Each foot of horizontal run = 2 ft.
3) Add 4% overall for each 1000' above sea
level.
Example: a)
1-1/2 ft. of horizontal run
= 3 ft.
one "T"
= 3 ft.
Total Addition (at sea level)
= 6 ft.
Example: b)
One 90 deg. elbow
= 2 ft.
2 ft. of horizontal run
= 4 ft.
one "T"
= 3 ft.
Total Addition (at sea level)
= 9 ft.
Recommended Flue Height
Elevation Example a) Example b)
0' 18'
21'
1000'
18.72'
21.84'
2000'
19.44'
22.68'
5000'
21.60'
25.20'
8000'
23.76'
27.72'
TABLE 1
MINIMUM RECOMMENDED FLUE HEIGHTS IN FEET
(Measured from the top of the unit)
# OF ELBOWS
ELEVATION (FT)
ABOVE SEA LEVEL 0 2 x 15
o
4 x 15
o
2 x 30
o
4 x 30
o
2 x 45
o
4 x 45
o
0-1000
12.0
13.0
14.0
15.0
18.0
16.0
20.0
1000-2000
12.5 13.5 14.5 15.5 19.0 16.5 21.0
2000-3000
13.0 14.0 15.0 16.0 19.5 17.0 21.5
3000-4000
13.5 14.5 15.5 17.0 20.0 18.0 22.5
4000-5000
14.0 15.0 16.0 17.5 21.0 18.5 23.0
5000-6000
14.5 15.5 17.0 18.0 21.5 19.0 24.0
6000-7000
15.0 16.0 17.5 18.5 22.5 20.0 25.0
7000-8000
15.5 16.5 18.0 19.0 23.0 20.5 25.5
8000-9000
16.0 17.0 18.5 20.0 24.0 21.0 26.5
9000-10000
16.5 17.5 19.0 20.5 24.5 22.0 27.0
NOTE: No more than two offsets (four elbows) allowed. Two 45
o
elbows equal one 90
o
elbow.