Daikin EHOBG12AAV1 [31/316] Combined flue outlet air inlet system
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Daikin EHOBG12AAV1 [31/316] Combined flue outlet air inlet system

Daikin EHOBG12AAV1 [31/316] Combined flue outlet air inlet system
Daikin Europe NV
32
5.9.7 Combined flue 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
EHOBG12ABV1 100 m 10 m 29 m
EHOBG18ABV1 100 m 10 m 29 m
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.
EHOBG12ABV1 & EHOBG18ABV1
Number
of units Concentric Parallel
Flue gas Air supply Flue gas Air supply
2 135 253 135 214
3 157 295 157 249
4 166 311 166 263
5 175 328 175 278
6 184 345 184 292
7 193 362 193 306
8 201 376 201 318
9 210 393 210 332
10 219 410 219 347
11 228 427 228 361
12 237 444 237 375
13 246 461 246 389
14 255 478 255 404
15 264 494 264 418
16 272 509 272 431
17 281 526 281 445
18 290 543 290 459
19 299 560 299 473
20 308 577 308 488
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.

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