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INSTALLATION
Boiler
Flue gas line (smooth walled)
Number of bow 90° (flue gas + air supply)
Type
Flue gas-Dim.
Dimension
Total pipe lenght in m (flue gas + air supply)
UltraGas
®
internal
DN
1
2
3
4
5 *
(250D)
254
250
50
50
50
50
(300D)
254
50
50
50
50
(400D)
306
50
50
50
50
(500D)
306
38
35
32
29
(400D)
306
300
50
50
50
50
(500D)
306
50
50
50
50
(600D)
306
50
50
50
50
(700D)
356
50
50
50
50
(800D)
356
45
40
35
31
(900D)
356
32
27
22
17
(1000D)
356
26
21
15
12
(700D)
356
350
50
50
50
50
(800D)
356
50
50
50
50
(900D)
356
50
50
50
50
(1000D)
356
50
50
50
42
(1150D)
356
35
25
14
–
(1300D)
356
17
6
–
–
(1150D)
356
400
50
50
50
50
(1300D)
356
50
50
50
50
(1440D)
356
50
50
50
42
(1700D)
500
500
50
50
50
50
(2000D)
500
500
50
50
50
50
Notice: The data contained in the table «Flue gas line dimensions» represent guide values.
An exact calculation for the flue gas duct must be made on-site.
* With 5 bends or more the residual overpressure of the device is to be reduced by 30% for the calculation.
4.3
Flue gas line dimensions (overpressure)
Principles
• Height above sea level max. 1000 m.
•
The first 2 m of the flue gas line are to be executed
in the same dimensions as the flue gas connectors.
• Combustion air:
- In the case of room air-independent operation (ac-
cessories optional) the air pipe must be at least the
same dimension as the flue gas pipe.
-
If the flue gas line diameter is greater than that of the
combustion air line, an individual calculation must be
made.
• Flue gas overpressure set:
- Compellingly necessary, included in the scope of de-
livery!
4.4
Flue gas line dimensions
(negative pressure)
The flue gas system is to be dimensioned in such a way
that no back circulation is possible in the room. A safe
operation of the flue gas system has to be proved by ap
-
proved measuring principles.
