Daikin Rotex GW-20 C22, Installation Instructions Manual

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35
5.10.7 Combined flue gas outlet/air inlet system
Unit category : C43
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.
Parallel Concentric
60/100
Concentric
80/125
RKOMB22AAV1H 100 m 10 m 29 m
RKOMB28AAV1H 85 m 10 m 29 m
RKOMB33AAV1H 80 m 10 m 29 m
The minimum diameters of the communal air supply and flue tube system based
on addendum 2001-02 inspection requirements no. 138 of Gastec.
RKOMB22AAV1H and
RKOMB28AAV1H
RKOMB33AAV1H
Number
of units Concentric Parallel Concentric Parallel
Flue
outlet Air
inlet Flue
outlet Air
inlet Flue
outlet Air
inlet Flue
outlet Air
inlet
2 135 253 135 214 155 291 155 246
3 157 295 157 249 166 311 166 263
4 166 311 166 263 176 330 176 279
5 175 328 175 278 186 349 186 295
6 184 345 184 292 196 367 196 311
7 193 362 193 306 206 386 206 326
8 201 376 201 318 216 404 216 342
9 210 393 210 332 226 423 226 358
10 219 410 219 347 236 442 236 374
11 228 427 228 361 247 463 247 391
12 237 444 237 375 257 482 257 407
13 246 461 246 389 267 500 267 423
14 255 478 255 404 277 519 277 439
15 264 494 264 418 287 538 287 454
16 272 509 272 431 297 556 297 470
17 281 526 281 445 307 575 307 486
18 290 543 290 459 317 594 317 502
19 299 560 299 473 328 614 328 519
20 308 577 308 488 338 633 338 535
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.