Element4 POWERFAN MKII, Инструкция по установке и эксплуатации, Страница: 18 / 24

19
INSTALLATION AND USER MANUAL
3.5.1 Example
Step 1
See the desired setup in Figure 3.16 and Table 3.3. The first part
of the flue is designed concentrically, after which the supply and
flue are split. The supply is discharged directly via a wall outlet.
The flue must open vertically through a roof.
Step 2
• Add all
K
stretches for the total concentric part.
• Count
K
3
double because it goes down.
• Don't forget to add the two positive
N
+
turns. You may
neglect the negative turns
N
-
, these are already included in
the negative vertical stretch.
•
K
1
+
K
2
+ 2*
K
3
+
K
4
+ 2*
N
+
So
1m + 1m + 2 * 4m + 4m + 2 * 0.25m = 15m
Step 3
Now you know the length of the concentric part. Enter this in the
formula "
L
= 20- 2/3 *
K
"
"
L
= 20 2/3 * 15" = 10 m
Or
read
L
from table 3.2 at "
K
= 15m".
For
K
= 15 m, the value
L
= 10 m is also shown in the table
Because the flue outlet is longer than the air supply, calculated
from the adapter, we check whether this length meets the
maximum permitted length.
•
L
1
+
L
2
+
L
3
+
L
4
+
L
5
+ 2*
N
+
So
0.25m + 0.25m + 6m + 0.5m + 0.5m + 2 * 0.25m = 8m
The desired length of 8 meters is less than the maximum
permitted length of 10 meters, so this setup was approved.
Step 4
Add
K
and
L
together to check that the full length of the flue is
no more than 30 meters.
• 15 + 8 = 22m, so that's good.
Also check if the PowerFan is at least 2 meters away from the
fireplace. This is also the case, so you can install the PowerFan
without problems.
K
1
L
3
L
4
L
5
K
2
K
3
K
4
L
1
L
2
N
+
90
N
+
90
N
+
90
N
+
90
N
-
90
N
-
90
Figure 3.16 - Example set-up negative flue
Table 3.3 - Values for Figure 3.16
K
1
1m L
1
0,25m N
+
0,25m
K
2
1m
L
2
0,25m
N
-
-
K
3
4m L
3
6m
K
3
4m
L
4
0,5m
L
5
0,5m