Installation
o
utsidE
a
ir
k
it
:
It is mandatory to use outside air for installations in mobile homes.
A 4” (10.2 cm) fresh air adaptor kit is available. This kit can be installed on
the back of the Ash Box. If outside air is to be used in conjunction with the
convection fan kit, there is a separate outside air adapter which connects
to the bottom of the Ash Box. Refer to the Parts List.
Place the ¼” mesh screen behind the fresh air adaptor (as shown to
right).
Fresh air connection to the unit must be a non-combustible pipe -
Example: 4” (10.2 cm) single wall aluminum flex pipe.
r
EcommEndEd
H
EigHts
and
d
iamEtErs
f
or
f
luE
p
ipE
:
The minimum flue pipe height at sea level is 12 feet (3.7 m) straight up from top of the unit. For every
1000 feet (305 m) above sea level, 4% could be added to the overall height. Use Tables 14, 15, and 16
to calculate the required vertical rise required.
Elevation
above sea level
Minimum recommended flue pipe height for # of elbows
(Note: No more than 2 offsets (4 elbows) can be used. 2x45°=1x90°
feet
0
2 x 15° 4 x 15° 2 x 30° 4 x 30° 2 x 45° 4 x 45°
0-1000
12.0
12.7
13.3
13.3
14.7
14.0
16.0
1000-2000
12.5
13.2
13.8
13.8
15.3
14.6
16.6
2000-3000
13.0
13.7
14.4
14.4
15.9
15.1
17.3
3000-4000
13.4
14.2
14.9
14.9
16.5
15.7
17.9
4000-5000
13.9
14.7
15.4
15.4
17.1
16.2
18.6
5000-6000
14.4
15.2
16.0
16.0
17.6
16.8
19.2
6000-7000
14.9
15.7
16.5
16.5
18.2
17.4
19.8
7000-8000
15.4
16.3
17.0
17.0
18.8
17.9
20.5
8000-9000
15.8
16.8
17.6
17.6
19.4
18.5
21.1
9000-10000
16.3
17.3
18.1
18.1
20.0
19.0
21.8
meters
0
2 x 15° 4 x 15° 2 x 30° 4 x 30° 2 x 45° 4 x 45°
0-305
3.7
3.9
4.1
4.1
4.5
4.3
4.9
305-610
3.8
4.0
4.2
4.2
4.6
4.4
5.1
610-915
4.0
4.2
4.4
4.4
4.8
4.6
5.3
915-1220
4.1
4.3
4.6
4.6
5.0
4.8
5.5
1220-1525
4.2
4.5
4.7
4.7
5.2
4.9
5.7
1525-1830
4.4
4.6
4.9
4.9
5.4
5.1
5.9
1830-2135
4.5
4.8
5.0
5.0
5.5
5.3
6.0
2135-2440
4.7
4.9
5.2
5.2
5.7
5.5
6.2
2440-2745
4.8
5.1
5.4
5.4
5.9
5.6
6.4
2745-3050
5.0
5.3
5.5
5.5
6.1
5.8
6.6
Figure 9: Fresh Air Adaptor
Table 7: Distance to add to
overall vertical height.
Distance to add
Part used
feet
meters
45° elbow
1.0
0.3
90° elbow
2.0
0.6
“T”
3.0
0.9
1 ft (0.3m) of
horizontal run
2.0
0.6
Table 8: Examples of calculating
overall vertical height required.
Height
sea level with 2
x 30° elbows
13.3 ft (4.1 m)
one “T”
3.0 ft (0.9 m)
1½ ft (0.6 m)
horizontal run
3.0 ft (0.9 m)
Total 1
19.3 ft (5.9 m)
4000-5000 ft
(1220-1525 m)
above sea level
13.9 ft (4.2 m)
one “T”
3.0 ft (0.9 m)
2 ft (0.6 m)
horizontal run
4.0 ft (1.2 m)
Total 2
20.9 ft (6.3 m)
Table 6: Recommended Height for Flue Pipe.
We recommend the use of a 6” (150mm) diameter flue pipe. However, the CSA-B365, NFPA 211 Chapter
12.4.4-1, and the WETT Training Manual state that the flue pipe may be reduced in cross-sectional area
provided that the installer ensures sufficient draft is available at the appliance.
Rear of Ash Box
22