KOOLAIR CCR Series User manual

series
REGULATING
DAMPERS
www.koolair.com

Dampers 3
CONTENTS
Regulating dampers CRC-M, CRC-E and CCC 4
Executions. Dimensions 5
Technical data 7
Regulating dampers CRR, CRR-E, CRR-M and CRR-MT 13
Product codes and dimensions 14
Technical data 16

Damper CRC-MT
Description
Circular Regulating Dampers are used to balance air installations,
also these dampers can be used as shutoff dampers. Circular
regulating dampers are manufactured in Galvanised sheet metal.
Damper CRC-M
Damper CRC-E
Models
There are 3 different types of circular regulating dampers;
CRC-M: Circular Regulating Dampers made from a steel cylinder
made in galvanised sheet metal, it is operated by means of a
locking quadrant mechanism, which gives us a visual indication of
the damper position, this model provides a positive seal.
CRC-E: Circular Regulating Dampers made from a steel cylinder
made in galvanised sheet metal, it is operated by means of a
simple handled, this type provides a positive seal.
CCC: Circular Regulating Dampers made from a steel cylinder
made in galvanised sheet metal, it is operated by means of a
simple handled, this type does not provide a positive seal.
Product codes
Circular regulating dampers are coded according to their diameter:
CRC-M Ø diameter of the duct
CRC-E Ø diameter of the duct
CCC Ø diameter of the duct
CRC-MT Ø diameter of the duct
Example:
CCC 200: Circular regulating damper of Ø of duct 200 mm.
4Dampers
Circular regulating dampers types CRC-M, CRC-E
and CCC

Executions. Dimensions
T
yp
e CCC
Dampers 5
T
yp
e CRC-E
NOMINAL L Ø A
80 199 79
100 199 99
125 199 124
140 199 139
150 199 149
160 199 159
180 199 179
200 199 199
225 199 224
250 199 249
NOMINAL L Ø A
100 199 99
125 199 124
140 199 139
150 199 149
160 199 159
180 199 179
200 199 199
225 199 224
250 199 249
275 199 274
280 199 279
300 199 299
315 199 314

6Dampers
Executions. Dimensions
T
yp
e CRC-M and CRC-MT
CRC-M
NOMINAL L Ø A
100 199 99
125 199 124
140 199 139
150 199 149
160 199 159
180 199 179
200 199 199
225 199 224
250 199 249
275 199 274
280 199 279
300 199 299
315 199 314
350 300 349
355 300 354
375 400 374
400 400 399
450 400 449
500 400 499
600 400 599
625 400 624
700 400 699
CRC-MT
NOMINAL L Ø A
100 300 99
125 300 124
140 300 139
150 300 149
160 300 159
180 300 179
200 300 199
225 300 224
250 300 249
275 300 274
280 300 279
300 300 299
315 300 314
350 300 349
355 300 354
375 400 374
400 400 399
450 400 449
500 400 499
600 400 599
625 400 624
700 400 699

Technical data
Dampers 7
In this table it is given, for each air flow and inlet pressures from 100 to 1000 Pa, the Sound Pressure Level in dB(A) due
to the noise regenerated in the circular damper. To obtain these values we have assumed attenuation in the outlet duct,
the diffuser and the room of 10 dB/Octave.
Sound Pressure Levels in dB(A)
Damper Regenerated noise dB(A) a p [Pa] =
Size Ø [mm] Q [m
3
/h] Q (l/s) P
min
[Pa] 100 200 300 400 500 600 700 800 900 1000
100 99 85 23,6 8 33 36 39 40 42 43 44 44 45 46
170 47,2 31 40444648495051525353
255 70,8 69 44485152545556565758
340 94,4 122 51 54 55 57 58 59 59 60 61
425 118,1 191 54 56 58 59 60 61 62 63 63
125 124 130 36,1 6 34 38 41 42 44 45 46 47 47 48
260 72,2 26 41454849515253545455
390 108,3 58 45495254555657585959
520 144,4 103 48 52 55 57 58 59 60 61 62 62
650 180,6 161 55 57 59 60 62 62 63 64 65
140 139 165 45,8 6 34 39 41 43 45 46 47 48 48 49
330 91,7 25 42464950525354555656
495 137,5 55 46505355565758596060
660 183,3 98 49535657596061626363
825 229,2 154 55 58 60 61 62 63 64 65 66
160 159 215 59,7 6 35 40 42 44 46 47 48 49 50 50
430 119,4 22 42474951535455565657
645 179,2 50 46515355575859606161
860 238,9 89 49535658596162636364
1075 298,6 140 56 58 60 62 63 64 65 66 66
200 199 340 94,4 5 36 41 44 46 47 48 50 51 51 52
680 188,9 19 42475052545556575859
1020 283,3 43 46515456585960616263
1360 377,8 77 49545759606263646565
1700 472,2 121 56 59 61 63 64 65 66 67 67
225 224 430 119,4 4 36 41 44 46 48 49 50 51 52 53
860 238,9 17 42485053545657585859
1290 358,3 39 46515456585960616263
1720 477,8 69 49545759616263646566
2150 597,2 109 51 56 59 61 63 64 65 66 67 68
250 249 525 145,8 4 36 41 44 46 48 49 51 52 52 53
1050 291,7 15 42485153545657585960
1575 437,5 34 46515456585961626263
2100 583,3 61 49545759616263646566
2625 729,2 96 51565961636465666768
315 314 840 233,3 3 36 42 45 47 49 50 51 53 53 54
1680 466,7 12 42485153555657595960
2520 700,0 27 46515457586061626364
3360 933,3 47 48535759616263656566
4200 1166,7 74 50 55 59 61 63 64 65 66 67 68
400 399 1350 375,0 2 35 41 45 47 49 51 52 53 54 55
2700 750,0 8 41 47 50 53 55 56 57 59 60 60
4050 1125,0 18 44 50 54 56 58 60 61 62 63 64
5400 1500,0 32 47 53 56 58 60 62 63 64 65 66
6750 1875,0 50 49 54 58 60 62 64 65 66 67 68

8Dampers
Technical data
In this table it is given, for each air flow and inlet pressures from 100 to 1000 Pa, the Sound Pressure Level in dB(A) due
to the noise radiated in the circular damper. To obtain these values we have assumed attenuation in the outlet duct, the
diffuser and the room of 10 dB/Octave.
<: Sound Power Level < 20 dB
Damper Radiated noise dB(A) a p [Pa] =
Size Ø[mm] Q [m
3
/h] Q (l/s) P
min
[Pa] 100 200 300 400 500 600 700 800 900 1000
100 99 85 23,6 8 < 242831333436373839
-2,104910 170 47,2 31 22283234363839414243
0,8440 255 70,8 69 24303436384041434445
340 94,4 122 32 35 38 40 41 43 44 45 46
425 118,1 191 33 36 39 41 43 44 45 46 47
125 124 130 36,1 6 < 23 27 29 31 33 34 35 37 37
-1,911090 260 72,2 26 21273133353738394141
0,7442 390 108,3 58 23 29 33 36 38 39 41 42 43 44
520 144,4 103 25 31 35 37 39 41 42 43 45 45
650 180,6 161 32 36 38 40 42 44 45 46 47
140 139 165 45,8 6 < 23 26 29 31 32 34 35 36 37
-1,812654 330 91,7 25 20273033353738394041
0,6935 495 137,5 55 23 29 33 35 37 39 41 42 43 44
660 183,3 98 25 31 35 37 39 41 42 43 45 45
825 229,2 154 32 36 39 41 42 44 45 46 47
160 159 215 59,7 6 < 22 26 28 30 32 33 35 36 37
-1,696670 430 119,4 22 20 27 30 33 35 37 38 39 40 41
0,6338 645 179,2 50 23 29 33 35 37 39 41 42 43 44
860 238,9 89 25 31 35 37 39 41 42 44 45 46
1075 298,6 140 33 36 39 41 42 44 45 46 47
200 199 340 94,4 5 < 22 26 28 30 32 33 35 36 37
-1,502850 680 188,9 19 21 27 31 33 35 37 38 39 40 41
0,5340 1020 283,3 43 24 30 33 36 38 40 41 42 43 44
1360 377,8 77 26 32 35 38 40 42 43 44 45 46
1700 472,2 121 33 37 40 42 43 45 46 47 48
225 224 430 119,4 4 < 22 26 28 30 32 33 35 36 37
-1,400545 860 238,9 17 21 27 31 34 36 37 39 40 41 42
0,4813 1290 358,3 39 24 30 34 37 39 40 42 43 44 45
1720 477,8 69 26 32 36 39 41 42 44 45 46 47
2150 597,2 109 28 34 38 40 42 44 45 47 48 49
250 249 525 145,8 4 < 22 26 29 31 32 34 35 36 37
-1,309030 1050 291,7 15 21 28 31 34 36 38 39 40 41 42
0,4342 1575 437,5 34 24 31 34 37 39 41 42 43 44 45
2100 583,3 61 27 33 37 39 41 43 44 45 47 47
2625 729,2 96 28 35 38 41 43 45 46 47 48 49
315 314 840 233,3 3 < 23 27 30 32 33 35 36 37 38
-1,108289 1680 466,7 12 23 29 33 35 37 39 40 42 43 44
0,3308 2520 700,0 27 26 32 36 39 41 42 44 45 46 47
3360 933,3 47 29 35 39 41 43 45 46 47 48 49
4200 1166,7 74 30 37 40 43 45 47 48 49 50 51
400 399 1350 375,0 2 < 25 29 31 33 35 36 37 38 39
-0,900790 2700 750,0 8 25 31 35 37 39 41 42 44 45 46
0,2239 4050 1125,0 18 29 35 38 41 43 45 46 47 48 49
5400 1500,0 32 31 37 41 44 46 47 49 50 51 52
6750 1875,0 50 33 39 43 46 48 49 51 52 53 54

12345678
HZ 63 125 250 500 1000 2000 4000 8000
OCTAVE BANDS
Dampers 9
Technical data
Value of the Sound Power of the regenerated noise (dB) for the circular regulating dampers in the different Octave bands
from 63 to 8000 Hz.
Damper
Size
Ø [mm] Q [m3/h
]
Q (l/s)
1234567812345678123456781234567812345678
100 99 85 23,6 35403939383532263944434342393630414646454442383243484747464340344449494847454135
170 47,2 42474747454339334651515149474337495453535149464050555555535147415256565654524842
255 70,8 47525151504744385156555553514842535858575653504455605959575552465661616059565347
340 94,4 5459585857545145566161605957534758636262615855495964646362605650
425 118,1 56 61 61 61 59 57 53 47 59 63 63 63 61 59 55 49 60 65 65 64 63 61 57 51 62 66 66 66 64 62 58 52
125 124 130 36,1 36414140393733274045454543413731434847474643403445494949474541354651515049464337
260 72,2 43484848464440344852525250484438505555545351474152575656555249435358585756545044
390 108,3 48 52 52 52 50 48 44 38 52 57 56 56 55 52 49 43 54 59 59 59 57 55 51 45 56 61 61 60 59 57 53 47 57 62 62 62 60 58 54 48
520 144,4 51 55 55 55 53 51 47 41 55 60 59 59 58 55 52 46 57 62 62 62 60 58 54 48 59 64 64 63 62 60 56 50 60 65 65 65 63 61 57 51
650 180,6 57 62 62 61 60 58 54 48 60 64 64 64 62 60 56 50 61 66 66 66 64 62 58 52 63 68 67 67 66 63 60 54
140 139 165 45,8 37424141403734284146464644423832444948484744413546515050484643374752525150484438
330 91,7 44494848474441354853535351494539515655555451484253585757555350445459595857555145
495 137,5 48 53 53 52 51 48 45 39 52 57 57 57 55 53 49 43 55 60 60 59 58 55 52 46 57 62 61 61 60 57 54 48 58 63 63 63 61 59 55 49
660 183,3 51 56 56 55 54 51 48 42 55 60 60 60 58 56 52 46 58 63 63 62 61 58 55 49 60 65 64 64 63 60 57 51 61 66 66 65 64 62 58 52
825 229,2 58 63 62 62 60 58 55 49 60 65 65 64 63 61 57 51 62 67 67 66 65 63 59 53 64 68 68 68 66 64 60 54
160 159 215 59,7 37424242403834284247474645423933455049494745423647515151494743374853535251494539
430 119,4 44 49 49 49 47 45 41 35 49 54 53 53 52 49 46 40 52 56 56 56 54 52 48 42 54 58 58 58 56 54 50 44 55 60 59 59 58 55 52 46
645 179,2 48 53 53 53 51 49 45 39 53 58 57 57 56 53 50 44 56 60 60 60 58 56 52 46 58 62 62 62 60 58 54 48 59 64 64 63 62 59 56 50
860 238,9 51 56 56 55 54 52 48 42 56 61 60 60 59 56 53 47 59 63 63 63 61 59 55 49 60 65 65 65 63 61 57 51 62 67 66 66 65 62 59 53
1075 298,6 58 63 63 62 61 58 55 49 61 66 65 65 63 61 58 52 63 67 67 67 65 63 59 53 64 69 69 68 67 65 61 55
200 199 340 94,4 38434342413935294348484746444034465150504946433748535352514845395054545452504640
680 188,9 45 50 49 49 48 45 42 36 50 55 54 54 52 50 47 41 53 57 57 57 55 53 49 43 55 59 59 59 57 55 51 45 56 61 61 60 59 57 53 47
1020 283,3 49 53 53 53 51 49 45 39 54 58 58 58 56 54 50 44 56 61 61 61 59 57 53 47 58 63 63 63 61 59 55 49 60 65 65 64 63 60 57 51
1360 377,8 51 56 56 56 54 52 48 42 56 61 61 61 59 57 53 47 59 64 64 63 62 60 56 50 61 66 66 65 64 62 58 52 63 68 67 67 65 63 60 54
1700 472,2 58 63 63 63 61 59 55 49 61 66 66 66 64 62 58 52 63 68 68 68 66 64 60 54 65 70 69 69 68 65 62 56
225 225 430 119,4 38 43 43 43 41 39 35 29 43 48 48 48 46 44 40 34 46 51 51 51 49 47 43 37 49 53 53 53 51 49 45 39 50 55 55 54 53 51 47 41
860 238,9 45 50 49 49 48 45 42 36 50 55 54 54 53 50 47 41 53 58 57 57 56 53 50 44 55 60 59 59 58 55 52 46 57 61 61 61 59 57 53 47
1290 358,3 49 53 53 53 51 49 45 39 54 58 58 58 56 54 50 44 57 61 61 61 59 57 53 47 59 64 63 63 61 59 56 50 60 65 65 65 63 61 57 51
1720 477,8 51 56 56 56 54 52 48 42 56 61 61 61 59 57 53 47 59 64 64 64 62 60 56 50 61 66 66 66 64 62 58 52 63 68 68 67 66 63 60 54
2150 597,2 53 58 58 58 56 54 50 44 58 63 63 63 61 59 55 49 61 66 66 66 64 62 58 52 63 68 68 68 66 64 60 54 65 70 70 69 68 66 62 56
250 250 175 145,8 38 43 43 43 41 39 35 29 44 48 48 48 46 44 40 34 47 51 51 51 49 47 43 37 49 54 53 53 52 49 46 40 50 55 55 55 53 51 47 41
350 291,7 45 50 49 49 47 45 42 36 50 55 54 54 53 50 47 41 53 58 57 57 56 53 50 44 55 60 60 59 58 56 52 46 57 62 61 61 59 57 54 48
525 437,5 48 53 53 53 51 49 45 39 54 58 58 58 56 54 50 44 57 61 61 61 59 57 53 47 59 64 63 63 61 59 56 50 60 65 65 65 63 61 57 51
700 583,3 51 56 56 55 54 51 48 42 56 61 61 60 59 57 53 47 59 64 64 63 62 60 56 50 61 66 66 66 64 62 58 52 63 68 68 67 66 63 60 54
875 729,2 53 58 58 57 56 53 50 44 58 63 63 62 61 59 55 49 61 66 66 65 64 62 58 52 63 68 68 68 66 64 60 54 65 70 70 69 68 66 62 56
315 315 840 233,3 38 43 43 43 41 39 35 29 44 49 48 48 47 44 41 35 47 52 52 51 50 48 44 38 49 54 54 54 52 50 46 40 51 56 56 55 54 52 48 42
1680 466,7 44 49 49 49 47 45 41 35 50 55 54 54 53 50 47 41 53 58 58 57 56 54 50 44 55 60 60 60 58 56 52 46 57 62 62 61 60 58 54 48
2520 700,0 48 53 52 52 51 48 45 39 53 58 58 58 56 54 50 44 57 61 61 61 59 57 53 47 59 64 63 63 62 59 56 50 61 65 65 65 63 61 57 51
3360 933,3 50 55 55 55 53 51 47 41 56 61 60 60 59 56 53 47 59 64 64 63 62 60 56 50 61 66 66 66 64 62 58 52 63 68 68 67 66 64 60 54
4200 1166,7 52 57 57 57 55 53 49 43 58 63 62 62 61 58 55 49 61 66 66 65 64 61 58 52 63 68 68 68 66 64 60 54 65 70 70 69 68 66 62 56
400 400 1350 375,0 38 43 42 42 41 38 35 29 44 48 48 48 46 44 40 34 47 52 52 51 50 47 44 38 49 54 54 54 52 50 46 40 51 56 56 56 54 52 48 42
2700 750,0 44 48 48 48 46 44 40 34 49 54 54 54 52 50 46 40 53 58 57 57 55 53 50 44 55 60 60 59 58 56 52 46 57 62 62 61 60 57 54 48
4050 1125,0 47 52 51 51 50 47 44 38 53 57 57 57 55 53 49 43 56 61 61 60 59 56 53 47 59 63 63 63 61 59 55 49 60 65 65 65 63 61 57 51
5400 1500,0 49 54 54 53 52 50 46 40 55 60 60 59 58 55 52 46 58 63 63 63 61 59 55 49 61 66 65 65 64 61 58 52 63 68 67 67 65 63 60 54
6750 1875,0 51 56 56 55 54 51 48 42 57 62 61 61 60 57 54 48 60 65 65 64 63 61 57 51 63 67 67 67 65 63 59 53 65 69 69 69 67 65 61 55
p = 500 Pa
Regenerated noise p = 100 Pa p = 200 Pa p = 300 Pa p = 400 Pa

12345678
HZ 63 125 250 500 1000 2000 4000 8000
OCTAVE BANDS
10 Dampers
Technical data
Damper
Size
Ø [mm] Q [m3/h
]
Q (l/s)
1234567812345678123456781234567812345678
100 99 85 23,6 45505049484642364651515049464337475251515047443847525252504844384853535251484539
170 47,2 53575757555349435458585856545044545959595755514555605959585552465660606058565246
255 70,8 57626261605754485863626261585549596463636159565059646464626056506065646463605751
340 94,4 60656564636157516166666564615852626766666562595362676767656359536368686766636054
425 118,1 63 67 67 67 65 63 59 53 63 68 68 68 66 64 60 54 64 69 69 68 67 65 61 55 65 70 69 69 68 65 62 56 66 70 70 70 68 66 62 56
125 124 130 36,1 47525251504844384853535251494539495453535249464050545454525046405055555553514741
260 72,2 54595959575551455560606058565246566161605957534757626161605754485862626260585448
390 108,3 59 63 63 63 61 59 55 49 60 64 64 64 62 60 56 50 60 65 65 65 63 61 57 51 61 66 66 65 64 62 58 52 62 67 66 66 64 62 59 53
520 144,4 62 66 66 66 64 62 58 52 63 67 67 67 65 63 59 53 63 68 68 68 66 64 60 54 64 69 69 68 67 64 61 55 65 70 69 69 67 65 62 56
650 180,6 64 69 68 68 67 64 61 55 65 70 69 69 68 65 62 56 66 70 70 70 68 66 62 56 66 71 71 71 69 67 63 57 67 72 72 71 70 67 64 58
140 139 165 45,8 48535352514945394954545352504640505555545351474151565555545148425256565654524842
330 91,7 55606060585652465661616159575347576262616058544858636262615855495963636361595549
495 137,5 59 64 64 64 62 60 56 50 60 65 65 65 63 61 57 51 61 66 66 66 64 62 58 52 62 67 67 66 65 62 59 53 63 68 67 67 65 63 60 54
660 183,3 62 67 67 67 65 63 59 53 63 68 68 68 66 64 60 54 64 69 69 68 67 65 61 55 65 70 70 69 68 65 62 56 66 70 70 70 68 66 62 56
825 229,2 65 69 69 69 67 65 61 55 66 70 70 70 68 66 62 56 67 71 71 71 69 67 63 57 67 72 72 71 70 68 64 58 68 73 72 72 71 68 65 59
160 159 215 59,7 49545454525046405055555553514741515656555452484252575756555249435358575755535044
430 119,4 56 61 61 60 59 57 53 47 57 62 62 61 60 58 54 48 58 63 63 62 61 59 55 49 59 64 63 63 62 59 56 50 60 64 64 64 62 60 56 50
645 179,2 60 65 65 64 63 61 57 51 61 66 66 65 64 62 58 52 62 67 67 66 65 63 59 53 63 68 67 67 66 63 60 54 64 68 68 68 66 64 60 54
860 238,9 63 68 68 67 66 63 60 54 64 69 69 68 67 65 61 55 65 70 69 69 68 65 62 56 66 71 70 70 68 66 63 57 66 71 71 71 69 67 63 57
1075 298,6 65 70 70 70 68 66 62 56 66 71 71 71 69 67 63 57 67 72 72 71 70 68 64 58 68 73 72 72 71 68 65 59 69 73 73 73 71 69 65 59
200 199 340 94,4 51565555545148425257565655524943535857575653504454595858565451455459595957555145
680 188,9 57 62 62 62 60 58 54 48 59 63 63 63 61 59 55 49 60 64 64 64 62 60 56 50 60 65 65 65 63 61 57 51 61 66 66 65 64 61 58 52
1020 283,3 61 66 66 66 64 62 58 52 62 67 67 67 65 63 59 53 63 68 68 68 66 64 60 54 64 69 69 68 67 65 61 55 65 70 69 69 68 65 62 56
1360 377,8 64 69 69 68 67 64 61 55 65 70 70 69 68 66 62 56 66 71 71 70 69 67 63 57 67 72 71 71 70 67 64 58 68 72 72 72 70 68 64 58
1700 472,2 66 71 71 70 69 67 63 57 67 72 72 71 70 68 64 58 68 73 73 72 71 69 65 59 69 74 74 73 72 69 66 60 70 75 74 74 72 70 67 61
225 225 430 119,4 51 56 56 56 54 52 48 42 53 57 57 57 55 53 49 43 54 58 58 58 56 54 50 44 54 59 59 59 57 55 51 45 55 60 60 59 58 56 52 46
860 238,9 58 63 62 62 61 58 55 49 59 64 64 63 62 59 56 50 60 65 65 64 63 60 57 51 61 66 65 65 64 61 58 52 62 66 66 66 64 62 58 52
1290 358,3 62 66 66 66 64 62 58 52 63 68 67 67 66 63 60 54 64 69 68 68 66 64 61 55 65 69 69 69 67 65 61 55 65 70 70 70 68 66 62 56
1720 477,8 64 69 69 69 67 65 61 55 65 70 70 70 68 66 62 56 66 71 71 71 69 67 63 57 67 72 72 72 70 68 64 58 68 73 73 72 71 68 65 59
2150 597,2 66 71 71 71 69 67 63 57 68 72 72 72 70 68 64 58 69 73 73 73 71 69 65 59 69 74 74 74 72 70 66 60 70 75 75 74 73 71 67 61
250 250 175 145,8 52 57 56 56 55 52 49 43 53 58 57 57 56 53 50 44 54 59 58 58 57 54 51 45 55 60 59 59 58 55 52 46 56 60 60 60 58 56 52 46
350 291,7 58 63 63 62 61 59 55 49 59 64 64 63 62 60 56 50 60 65 65 64 63 61 57 51 61 66 66 65 64 62 58 52 62 67 66 66 65 62 59 53
525 437,5 62 67 66 66 65 62 59 53 63 68 67 67 66 63 60 54 64 69 68 68 67 64 61 55 65 70 69 69 68 65 62 56 66 70 70 70 68 66 62 56
700 583,3 64 69 69 69 67 65 61 55 66 70 70 70 68 66 62 56 67 71 71 71 69 67 63 57 67 72 72 72 70 68 64 58 68 73 73 72 71 69 65 59
875 729,2 66 71 71 71 69 67 63 57 68 72 72 72 70 68 64 58 69 73 73 73 71 69 65 59 70 74 74 74 72 70 66 60 70 75 75 74 73 71 67 61
315 315 840 233,3 53 57 57 57 55 53 49 43 54 59 58 58 57 54 51 45 55 60 59 59 58 55 52 46 56 61 60 60 59 56 53 47 57 61 61 61 59 57 53 47
1680 466,7 59 63 63 63 61 59 55 49 60 65 64 64 63 60 57 51 61 66 65 65 64 61 58 52 62 67 66 66 65 62 59 53 63 67 67 67 65 63 59 53
2520 700,0 62 67 67 66 65 63 59 53 63 68 68 68 66 64 60 54 64 69 69 69 67 65 61 55 65 70 70 70 68 66 62 56 66 71 71 70 69 67 63 57
3360 933,3 65 69 69 69 67 65 61 55 66 71 70 70 69 66 63 57 67 72 71 71 70 67 64 58 68 73 72 72 71 68 65 59 69 73 73 73 71 69 65 59
4200 1166,7 67 71 71 71 69 67 63 57 68 73 72 72 70 68 65 59 69 74 73 73 72 69 66 60 70 75 74 74 72 70 67 61 71 75 75 75 73 71 67 61
400 400 1350 375,0 53 58 57 57 56 53 50 44 54 59 59 58 57 55 51 45 55 60 60 60 58 56 52 46 56 61 61 61 59 57 53 47 57 62 62 61 60 58 54 48
2700 750,0 59 63 63 63 61 59 55 49 60 65 64 64 63 60 57 51 61 66 66 65 64 61 58 52 62 67 66 66 65 62 59 53 63 68 67 67 66 63 60 54
4050 1125,0 62 67 66 66 65 62 59 53 63 68 68 67 66 64 60 54 64 69 69 69 67 65 61 55 65 70 70 70 68 66 62 56 66 71 71 70 69 67 63 57
5400 1500,0 64 69 69 68 67 65 61 55 66 70 70 70 68 66 62 56 67 71 71 71 69 67 63 57 68 72 72 72 70 68 64 58 69 73 73 73 71 69 65 59
6750 1875,0 66 71 71 70 69 67 63 57 67 72 72 72 70 68 64 58 69 73 73 73 71 69 65 59 70 74 74 74 72 70 66 60 70 75 75 75 73 71 67 61
p = 900 Pa p = 1000 Pap = 600 Pa p = 700 Pa p =800 Pa
Regenerated noise

Damper
Size
Ø [mm] Q [m3/h
]
Q (l/s)
1234567812345678123456781234567812345678
100 99 85 23,6 24 27 26 24 23 21 < < 30 33 32 30 30 27 25 < 33 37 36 34 33 30 29 22 36 40 38 37 36 33 31 24 38 42 40 39 38 35 33 26
170 47,2 27 31 29 28 27 24 22 < 33 37 36 34 33 30 29 22 37 41 39 37 37 34 32 25 40 43 42 40 39 37 35 28 42 45 44 42 41 39 37 30
255 70,8 29 33 31 30 29 26 24 < 35 39 38 36 35 32 31 24 39 43 41 40 39 36 34 27 42 45 44 42 42 39 37 30 44 47 46 44 44 41 39 32
340 94,4 3740393737343225414443414038362943474544434038314549474645424033
425 118,1 38 42 40 39 38 35 33 26 42 45 44 42 42 39 37 30 44 48 47 45 44 41 40 33 46 50 49 47 46 43 42 35
125 124 130 36,1 22 26 24 23 22 19 < < 28 32 31 29 28 25 24 < 32 36 34 32 32 29 27 20 35 38 37 35 34 32 30 23 37 40 39 37 36 34 32 25
260 72,2 26 30 28 26 26 23 21 < 32 36 35 33 32 29 28 21 36 40 38 36 36 33 31 24 38 42 41 39 38 35 34 27 41 44 43 41 40 38 36 29
390 108,3 28323129282524 < 3538373534323023384241393835342741444341413836294346454343403831
520 144,4 30343230302725 < 3640393736333225404342404037352842464543423938314548474544424033
650 180,6 38 41 40 38 37 35 33 26 41 45 43 42 41 38 36 29 44 47 46 44 44 41 39 32 46 49 48 46 46 43 41 34
140 139 165 45,8 2225242221 < < < 28313028282523 < 313534323128272034383635343129223640383736333124
330 91,7 26 29 28 26 26 23 21 < 32 36 34 33 32 29 27 20 36 39 38 36 36 33 31 24 38 42 41 39 38 35 34 27 40 44 43 41 40 37 36 29
495 137,5 28323129282524 < 3538373534323023384240393835332641444341413836294346454343403831
660 183,3 30343231302725 < 3640393736333225404442404037352843464543424038314548474544424033
825 229,2 38 41 40 38 38 35 33 26 41 45 44 42 41 38 37 30 44 47 46 44 44 41 39 32 46 49 48 46 46 43 41 34
160 159 215 59,7 21 25 23 22 21 < < < 27 31 30 28 27 24 23 < 31 35 33 32 31 28 26 < 34 37 36 34 34 31 29 22 36 39 38 36 36 33 31 24
430 119,4 26292826262321 < 3235343232292720363938363533312438424039383533264044424140373528
645 179,2 28323129282524 < 3538373534323023384240393835332641444341413836294346454343403831
860 238,9 30343231302725 < 3640393736333225404442414037352843464543434038314548474545424033
1075 298,6 38 41 40 38 38 35 33 26 41 45 44 42 41 38 37 30 44 48 46 45 44 41 39 32 46 50 48 47 46 43 41 34
200 199 340 94,4 21 25 23 22 21 < < < 27 31 30 28 27 24 23 < 31 35 33 31 31 28 26 < 34 37 36 34 33 31 29 22 36 39 38 36 35 33 31 24
680 188,9 26302826262321 < 3236353332292821363938363633312438424139383534274044434140373629
1020 283,3 29323129292624 < 3539373635323023394241393936342741454442413837304347464443403932
1360 377,8 31343331312826 < 3741393837343225414443414138362943474644434039324549484645424134
1700 472,2 39 42 41 39 39 36 34 27 42 46 45 43 42 39 38 31 45 49 47 45 45 42 40 33 47 51 49 47 47 44 42 35
225 225 430 119,4 21 25 23 22 21 < < < 27 31 30 28 27 24 23 < 31 35 33 32 31 28 26 < 34 37 36 34 34 31 29 22 36 39 38 36 36 33 31 24
860 238,9 26302927262322 < 3336353332302821364039373633322539424139393634274144434141383629
1290 358,3 29333230292625 < 3639383635333124394342403936352842454442423937304447464444413932
1720 477,8 31 35 34 32 31 28 27 20 38 41 40 38 38 35 33 26 41 45 44 42 41 38 37 30 44 48 46 44 44 41 39 32 46 50 48 46 46 43 41 34
2150 597,2 33 37 35 34 33 30 28 21 39 43 42 40 39 36 35 28 43 47 45 44 43 40 38 31 46 49 48 46 46 43 41 34 48 51 50 48 48 45 43 36
250 250 175 48,6 2125242221 < < < 28313028272523 < 313534323128272034373634343129223639383636333124
350 97,2 27 30 29 27 27 24 22 < 33 37 35 33 33 30 28 21 37 40 39 37 36 34 32 25 39 43 41 40 39 36 34 27 41 45 43 42 41 38 36 29
525 145,8 30333230302725 < 3640383736333124404342404037352842464543423938314448474544414033
700 194,4 32 36 34 32 32 29 27 20 38 42 41 39 38 35 34 27 42 46 44 42 42 39 37 30 45 48 47 45 44 42 40 33 47 50 49 47 46 44 42 35
875 243,1 34 37 36 34 34 31 29 22 40 44 42 40 40 37 35 28 44 47 46 44 44 41 39 32 46 50 49 47 46 43 42 35 48 52 51 49 48 45 44 37
315 315 840 233,3 2226252322 < < < 29323129282624 < 323635333229282135383735353230233740393737343225
1680 466,7 28323029282523 < 3438373534313023384240393835332641444341413836294346454343403831
2520 700,0 31 35 34 32 31 28 27 20 38 41 40 38 38 35 33 26 41 45 44 42 41 38 37 30 44 48 46 45 44 41 39 32 46 50 48 47 46 43 41 34
3360 933,3 34 38 36 34 34 31 29 22 40 44 42 41 40 37 35 28 44 47 46 44 44 41 39 32 46 50 49 47 46 43 42 35 48 52 51 49 48 45 44 37
4200 1166,7 36 39 38 36 36 33 31 24 42 46 44 43 42 39 37 30 46 49 48 46 46 43 41 34 48 52 51 49 48 45 44 37 50 54 53 51 50 47 46 39
400 400 1350 375,0 242826242421 < <30343231302725 < 343736343431292236403937363332253842413938353427
2700 750,0 30343231302725 < 3640393736333225404442414037352843464543434038314548474545424033
4050 1125,0 34 37 36 34 34 31 29 22 40 44 42 41 40 37 35 28 44 47 46 44 44 41 39 32 46 50 49 47 46 43 42 35 48 52 51 49 48 45 44 37
5400 1500,0 36 40 39 37 36 33 32 25 43 46 45 43 43 40 38 31 46 50 49 47 46 43 42 35 49 53 51 49 49 46 44 37 51 55 53 51 51 48 46 39
6750 1875,0 38 42 41 39 38 35 34 27 45 48 47 45 45 42 40 33 48 52 51 49 48 45 44 37 51 55 53 51 51 48 46 39 53 57 55 53 53 50 48 41
Radiatednoise p =100 Pa p =200 Pa p =300 Pa p =400 Pa p = 500 Pa
12345678
HZ 63 125 250 500 1000 2000 4000 8000
OCTAVE BANDS
Dampers 11
Quick selection tables
<: Sound Power Level < 20 dB
Value of the Sound Power of the regenerated noise (dB) for the circular regulating dampers in the different Octave bands
from 63 to 8000 Hz.

12345678
HZ 63 125 250 500 1000 2000 4000 8000
OCTAVE BANDS
12 Dampers
Quick selection tables
Damper
Size
Ø[mm] Q [m3/h
]
Q (l/s)
1234567812345678123456781234567812345678
100 99 85 23,6 40434240403735284145434241383629424645434239383143474644434039324448474544414033
170 47,2 43474644434039324548474545424033464948464643413447504947474442354851504848454336
255 70,8 45494846454241344750494747444235485150484845433649535149494644375054525050474538
340 94,4 47504947474442354852504948454336495352504946453850545351504746395155545251484740
425 118,1 48 52 50 48 48 45 43 36 49 53 52 50 49 46 45 38 51 54 53 51 50 48 46 39 52 55 54 52 51 49 47 40 53 56 55 53 52 50 48 41
125 124 130 36,1 38424039383533264043424039373528414443414138362942454442423937304346454343403831
260 72,2 42464443423937304447464443413932454847454542403346494846464341344750494747444235
390 108,3 44 48 47 45 44 41 40 33 46 49 48 46 46 43 41 34 47 51 49 48 47 44 42 35 48 52 50 49 48 45 43 36 49 53 51 50 49 46 44 37
520 144,4 46 50 48 47 46 43 41 34 48 51 50 48 47 45 43 36 49 52 51 49 49 46 44 37 50 53 52 50 50 47 45 38 51 54 53 51 51 48 46 39
650 180,6 47 51 50 48 47 44 43 36 49 52 51 49 49 46 44 37 50 54 52 51 50 47 45 38 51 55 53 52 51 48 46 39 52 56 54 53 52 49 47 40
140 139 165 45,8 38414038383533263943414039363427404443414037362941454442413837304246454342393831
330 91,7 42464442423937304347464443403932454847454442403346494846464341344750494746444235
495 137,5 44 48 47 45 44 41 40 33 46 49 48 46 46 43 41 34 47 51 49 48 47 44 42 35 48 52 50 49 48 45 43 36 49 53 51 50 49 46 44 37
660 183,3 46 50 48 47 46 43 41 34 48 51 50 48 47 45 43 36 49 52 51 49 49 46 44 37 50 53 52 50 50 47 45 38 51 54 53 51 51 48 46 39
825 229,2 48 51 50 48 47 45 43 36 49 53 51 49 49 46 44 37 50 54 52 51 50 47 45 38 51 55 53 52 51 48 46 39 52 56 54 53 52 49 47 40
160 159 215 59,7 37414038373433263942413939363427404442404037352841454342413836294246444242393730
430 119,4 42 45 44 42 42 39 37 30 43 47 46 44 43 40 39 32 44 48 47 45 44 41 40 33 45 49 48 46 45 42 41 34 46 50 49 47 46 43 42 35
645 179,2 44 48 47 45 44 41 40 33 46 49 48 46 46 43 41 34 47 51 49 48 47 44 42 35 48 52 50 49 48 45 43 36 49 53 51 50 49 46 44 37
860 238,9 46 50 49 47 46 43 42 35 48 51 50 48 48 45 43 36 49 52 51 49 49 46 44 37 50 54 52 50 50 47 45 38 51 54 53 51 51 48 46 39
1075 298,6 48 51 50 48 48 45 43 36 49 53 51 50 49 46 44 37 50 54 53 51 50 47 46 39 51 55 54 52 51 48 47 40 52 56 55 53 52 49 48 41
200 199 340 94,4 37414038373433263942413939363427404342404037352841444341413836294245444242393730
680 188,9 42 46 44 43 42 39 37 30 44 47 46 44 43 41 39 32 45 48 47 45 45 42 40 33 46 49 48 46 46 43 41 34 47 50 49 47 47 44 42 35
1020 283,3 45 49 47 45 45 42 40 33 46 50 49 47 46 43 42 35 48 51 50 48 47 45 43 36 49 52 51 49 49 46 44 37 50 53 52 50 50 47 45 38
1360 377,8 47 51 49 48 47 44 42 35 48 52 51 49 48 45 44 37 50 53 52 50 50 47 45 38 51 54 53 51 51 48 46 39 52 55 54 52 52 49 47 40
1700 472,2 49 52 51 49 49 46 44 37 50 54 52 51 50 47 45 38 51 55 54 52 51 48 47 40 52 56 55 53 52 49 48 41 53 57 56 54 53 50 49 42
225 225 430 119,4 37 41 40 38 37 34 33 26 39 42 41 39 39 36 34 27 40 44 42 40 40 37 35 28 41 45 43 42 41 38 36 29 42 46 44 42 42 39 37 30
860 238,9 42 46 45 43 42 39 38 31 44 47 46 44 44 41 39 32 45 49 47 46 45 42 40 33 46 50 48 47 46 43 41 34 47 51 49 48 47 44 42 35
1290 358,3 45 49 48 46 45 42 41 34 47 50 49 47 47 44 42 35 48 52 50 49 48 45 43 36 49 53 51 50 49 46 44 37 50 54 52 51 50 47 45 38
1720 477,8 48 51 50 48 48 45 43 36 49 53 51 50 49 46 44 37 50 54 53 51 50 47 46 39 51 55 54 52 51 48 47 40 52 56 55 53 52 49 48 41
2150 597,2 49 53 52 50 49 46 45 38 51 54 53 51 51 48 46 39 52 55 54 52 52 49 47 40 53 57 55 53 53 50 48 41 54 57 56 54 54 51 49 42
250 250 175 48,6 37414038373433263942413939363427404442414037352841454342413836294246444342393730
350 97,2 43464543434038314448474544414033454948464542413447504947464442354751504847444336
525 145,8 46 50 48 46 46 43 41 34 47 51 50 48 47 44 43 36 49 52 51 49 48 46 44 37 50 53 52 50 50 47 45 38 51 54 53 51 50 48 46 39
700 194,4 48 52 50 49 48 45 43 36 50 53 52 50 49 47 45 38 51 54 53 51 51 48 46 39 52 55 54 52 52 49 47 40 53 56 55 53 53 50 48 41
875 243,1 50 53 52 50 50 47 45 38 51 55 54 52 51 48 47 40 52 56 55 53 52 49 48 41 54 57 56 54 53 51 49 42 55 58 57 55 54 52 50 43
315 315 840 233,3 39 42 41 39 38 36 34 27 40 44 42 40 40 37 35 28 41 45 43 42 41 38 36 29 42 46 44 43 42 39 37 30 43 47 45 44 43 40 38 31
1680 466,7 44 48 47 45 44 41 40 33 46 49 48 46 46 43 41 34 47 51 49 47 47 44 42 35 48 52 50 48 48 45 43 36 49 53 51 49 49 46 44 37
2520 700,0 48 51 50 48 48 45 43 36 49 53 51 50 49 46 44 37 50 54 53 51 50 47 46 39 51 55 54 52 51 48 47 40 52 56 55 53 52 49 48 41
3360 933,3 50 54 52 51 50 47 45 38 51 55 54 52 51 48 47 40 53 56 55 53 53 50 48 41 54 57 56 54 54 51 49 42 55 58 57 55 55 52 50 43
4200 1166,7 52 56 54 52 52 49 47 40 53 57 56 54 53 50 49 42 55 58 57 55 54 52 50 43 56 59 58 56 56 53 51 44 57 60 59 57 56 54 52 45
400 400 1350 375,0 40 44 42 41 40 37 35 28 42 45 44 42 41 39 37 30 43 46 45 43 43 40 38 31 44 47 46 44 44 41 39 32 45 48 47 45 45 42 40 33
2700 750,0 46 50 49 47 46 43 42 35 48 51 50 48 48 45 43 36 49 53 51 49 49 46 44 37 50 54 52 51 50 47 45 38 51 55 53 51 51 48 46 39
4050 1125,0 50 54 52 51 50 47 45 38 51 55 54 52 51 48 47 40 53 56 55 53 53 50 48 41 54 57 56 54 54 51 49 42 55 58 57 55 55 52 50 43
5400 1500,0 53 56 55 53 53 50 48 41 54 58 56 55 54 51 49 42 55 59 58 56 55 52 51 44 56 60 59 57 56 53 52 45 57 61 60 58 57 54 53 46
6750 1875,0 55 58 57 55 55 52 50 43 56 60 58 57 56 53 51 44 57 61 60 58 57 54 53 46 58 62 61 59 58 55 54 47 59 63 62 60 59 56 55 48
p = 600 Pa p = 700 Pa p =800 Pa p = 900 Pa p = 1000 Pa
Radiatednoise

CRR-MT model
Description
The KOOLAIR CRR volume control dampers are rectangular units
to be used for flow and pressure control in HVAC installations. The
dampers are fitted with a single slat commanded by a central shaft
and are manufactured of galvanized steel sheet.
Models
There are four types of rectangular volume control dampers,
according to the operating mechanism included and the degree of
air tightness provided:
CRR-MT: Rectangular volume control damper manufactured of
galvanized steel sheet, with servo drive-based slat operation
(opened/closed, three-setting operation, or proportional operation)
with 24V or 220 V AC power supply. Includes tightness seal
around the entire housing perimeter.
CRR-M: Rectangular volume control damper manufactured of
galvanized steel sheet and operated by an easy-to-use manual
control section, which shows the extent of slat opening from the
exterior. Fitted with a tightness seal around the entire housing
perimeter.
CRR-E: Rectangular volume control damper manufactured of
galvanized steel sheet and operated by a simple control (handle or
wing nut). Fitted with a tightness seal around the entire housing
perimeter.
CRR: Rectangular volume control damper manufactured of
galvanized steel sheet and operated by a simple control (handle or
wing nut). Not fitted with a tightness seal around the entire housing
perimeter.
Dampers 13
Volume control dampers, CRR series

CRR. Dimensions LxH (mm).
CRR-E Dimensions LxH (mm).
CRR-M Dimensions LxH (mm).
CRR-MT Dimensions LxH (mm).
Note: Specify servo drive type and power
Identification
The damper identification will be coded according to
the nomenclature listed in the adjacent table.
Coding example: CRR-MT, 500x200 with
open/closed servo drive, 24V DC power.
Executions. Dimensions
Product codes
The dimensions listed below are standard for all damper models in the series.
NOMINAL DIMENSIONS (AIR FLOW AREA), in mm
- CRR model
14 Dampers
NOMINAL LENGTH
NOMINAL HEIGHT

Executions. Dimensions
- CRR-E model
- CRR-M model
Dampers 15
NOMINAL LENGTH
NOMINAL HEIGHT
2 CONTROLS
2 CONTROLS
NOMINAL LENGTH
NOMINAL HEIGHT
MANUAL CONTROL

Executions. Dimensions
- CRR-MT model
Technical data
Sound power and pressure loss chart, for % damper opening (20% to 100%)
The following chart corresponds to volume control dampers with an area of 0.1 m2. For other cross-sections, please use
the correction factor listed in the table on next page.
Symbols
V (m/s): Front air velocity through the damper, in m/s
Pest (Pa): Pressure drop in damper, in Pa
LWA [dB(A)]: Sound power level, in dB(A)
16 Dampers
NOMINAL LENGTH
NOMINAL HEIGHT
Motor
% damper opening

Technical data
Technical data table. Sound power level and pressure loss
The following table can be used to obtain the sound power level (in dB/octave), from a front air flow velocity and a degree
of damper opening (pressure loss, in Pa).
The data shown in the following table are for dampers with an area of 0.1 m2. For other cross-sections, please use the
correction factor listed further below on this page.
Sound power level correction values, for various damper cross-sections
Dampers 17
NOISE REGENERATEDCRR SERIES
% open Octave bands (Hz) - Sound power, in dB

THIS CATALOGUE IS INTELLECTUAL PROPERTY,
Reproduction, either partial or total, by any means, including electronic, is prohibited without prior written authorisation
fromKOOLAIR, S.L.
CIN-CRC-0515-00
18 Dampers

KOOLAIR, S.L.
Calle Urano, 26
Poligono industrial nº 2 – La Fuensanta
28936 Móstoles - Madrid - (España)
Tel: [phone]
Fax: [phone]
e-mail: [e-mail]
www.koolair.com