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Technical description
UNIMAT
6 720 807 794 (2013/04)
3.4
Connections
3.4.1
Flow and return
3.4.2
Flue outlet connection
At design spread and rated output
Suggested internal diameter
1)
1) Flanged connections designed as PN16 to DIN 2633; the internal diameters given should be taken as suggestions but can be determined
individually. Depending on the design, the flow and return connectors are restricted for certain boiler sizes.
Δ
T = 15 K
Δ
T = 20 K
Δ
T = 30 K
Δ
T = 40 K
[kW]
[kW]
[kW]
[kW]
>
175
≤
275
>
235
≤
367
>
352
≤
550
>
470
≤
734
DN50
>
275
≤
465
>
367
≤
620
>
550
≤
931
>
734
≤
1241
DN65
>
465
≤
705
>
620
≤
940
>
931
≤
1410
>
1241
≤
1881
DN80
>
705
≤
1102
>
940
≤
1469
>
1410
≤
2204
>
1881
≤
2938
DN100
>
1102
≤
1722
>
1469
≤
2296
>
2204
≤
3444
>
2938
≤
4592
DN125
>
1722
≤
2479
>
2296
≤
3306
>
3444
≤
4959
>
4592
≤
6612
DN150
>
2479
≤
4408
>
3306
≤
5877
>
4959
≤
8816
>
6612
≤
11755
DN200
>
4408
≤
6887
>
5877
≤
9183
>
8816
≤
13775
>
11755
≤
18367
DN250
>
6887
≤
9918
>
9183
≤
13224
>
13775
≤
19200
>
18367
≤
19200
DN300
>
9918
≤
13500
>
13224
≤
18000
–
–
DN350
>
13500
≤
17633
>
18000
≤
19200
–
–
DN400
Table 15 Internal diameters of flow and return connections subject to design spread and rated output
Rated output
1)
1) Actual output (according to type plate)
Flue outlet internal diameter
2)3)
D
1
2) Dimensions to EN 12220
3) Recommended values; exact diameter is calculated for each specific project.
Flue outlet D
1
(external)
3)
[kW]
–
[mm]
≤
827
DN200
213
>
827
≤
1350
DN250
256
> 1350
≤
2050
DN315
322
>
2051
≤
3307
DN400
400
>
3308
≤
5167
DN500
503
>
5168
≤
8203
DN630
634
>
8204
≤
10403
DN710
711
> 10404
≤
13227
DN800
797
> 13228
≤
16712
DN900
894
> 16713
≤
19200
DN1000
1003
Table 16 Flue outlet connection subject to the rated output