Daikin Rotex GW-30 H12 Installation Instructions Manual page 82

5.9.7 Combined flue outlet/air inlet system
Unit category : C43
IMPORTANT
•
A roof outlet through a Combination Air Supply-combustion gas
outlet system is permitted.
•
For the communal 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.
Permitted pipe length
For parallel: Air supply and combustion gas outlet together, excluding the length of the
combi feedthrough.
For concentric: total pipe length, excluding the length of the combi feedthrough.
RHOBG12AAV1
RHOBG18AAV1
The minimum diameters of the communal air supply and flue tube system based
on the continuation sheet 2001-02 inspection requirements no, 138 of Gastec.
RHOBG12AAV1 & RHOBG18AAV1
Number
of units Concentric
Flue gas Air supply
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
Parallel Concentric Concentric
60/100 80/125
100 m 10 m
100 m 10 m
Parallel
Flue gas Air supply
135 214
157 249
166 263
175 278
184 292
193 306
201 318
210 332
219 347
228 361
237 375
246 389
255 404
264 418
272 431
281 445
290 459
299 473
308 488
29 m
29 m
32