5.10.7 Combined flue outlet/air inlet system
Unit category : C43
IMPORTANT
•
A Combination Air/flue gas system is permitted.
•
For the combined combustion gas outlet hood and air supply
hood, a declaration of no objection or a Gas certificate from the
Gastec Gas institute is required.
•
The passage of the pressure balancing opening at the bottom of
the communal air supply and flue gas outlet system is equal to
0.44 times the flue gas outlet surface.
The communal air supply and the communal output of the combustion gases may be
carried out concentrically or separately.
The minimum diameters of the combined air supply and flue system based on the
continuation sheet 2001-02 inspection requirements no, 138 of Gastec.
RKOMBG22AAV1 AND
RKOMBG28AAV1
Number
of units
Concentric
Flue
Air
outlet
inlet
2
135
253
3
157
295
4
166
311
5
175
328
6
184
345
7
193
362
8
201
376
9
210
393
10
219
410
11
228
427
12
237
444
13
246
461
14
255
478
15
264
494
16
272
509
17
281
526
18
290
543
19
299
560
20
308
577
RKOMBG33AAV1
Parallel
Concentric
Flue
Air
Flue
Air
outlet
inlet
outlet
inlet
135
214
155
291
157
249
166
311
166
263
176
330
175
278
186
349
184
292
196
367
193
306
206
386
201
318
216
404
210
332
226
423
219
347
236
442
228
361
247
463
237
375
257
482
246
389
267
500
255
404
277
519
264
418
287
538
272
431
297
556
281
445
307
575
290
459
317
594
299
473
328
614
308
488
338
633
Parallel
Flue
Air
outlet
inlet
155
246
166
263
176
279
186
295
196
311
206
326
216
342
226
358
236
374
247
391
257
407
267
423
277
439
287
454
297
470
307
486
317
502
328
519
338
535
34