Viessmann Vitosol
100 Technical Manual page 34

2.4 Selection of collector types
Vitosol 250
Stress and maximum load of the substructure on flat roofs to DIN 1055
Installation height above ground
Weight of supports kg per support A
kg per support B
Snow load Height above
zone sea level
m
1 500
600
700
800
2 400
500
600
700
800
900
3 300
400
500
600
700
4 200
300
400
500
Example: Calculation of load of the substructure (secured against slippage)
A
y
A
A Support A
B Support B
34
Secured against slippage
m up to 8
26
23
Snow load S Total load of the substructure per collector
0
(by the collector weight, snow load, supports)
2
N/m kg
736 246
834 262
1030 295
1226 328
736 246
883 270
1128 311
1471 369
1815 426
2256 500
736 246
981 287
1226 328
1570 385
1962 451
981 287
1128 311
1521 377
2060 467
x
B
B
8 to 20 20 to 100
44 62
39 56
314 384
330 400
363 433
396 466
314 384
339 408
379 449
437 507
494 564
568 638
314 384
355 425
396 466
453 523
519 589
355 425
379 449
445 515
535 605
Secured against lifting
up to 8 8 to 20
13 24
11 19
196 234
212 250
245 283
278 316
196 234
221 259
261 299
319 357
376 414
450 488
196 234
237 275
278 316
335 373
401 439
237 275
261 299
327 365
417 455
Snow load zone:
Height above sea level:
Installation height:
Snow load S :
o
Weight
H Supports A: 2 x 44 kg + 88 kg ¢ 880 N
H Supports B: 2 x 39 kg + 78 kg ¢ 780 N
Projecting surface (x · y):
Weight:
Calculation:
2 2
1128 N/m · 1.67 m + 880 N + 780 N
+ 250 N
+ 3794 N
¢ 379 kg
VITOSOL
20 to 100
35
28
274
290
323
356
274
299
339
397
454
528
274
315
356
413
479
315
339
405
495
2
600 m
8 to 20 m
2
1128 N/m
2
1.67 m
25 kg