Centrifugal Power Roof Ventilators - American Coolair

CRBA44 Performance DataCFM at Static PressureRPM Range0.00 .125 .250 .375 .500 .750 1.00 1.25 1.50 Motor HPBHP Sone BHP Sone BHP Sone BHP Sone BHP Sone BHP Sone BHP Sone BHP Sone BHP Sone 1 1 ½ 2 3 5 7 ½ 1013,235 11,029 7,7830.55 5.1 0.58 4.4 0.55 4.014,316 12,256 9,7920.70 6.1 0.74 5.3 0.73 5.015,396 13,476 11,4790.87 7.2 0.91 6.3 0.92 6.116,315 14,511 12,726 9,7511.04 8.2 1.08 7.3 1.10 7.0 1.04 6.617,827 16,201 14,568 12,4811.35 10.2 1.40 9.0 1.43 8.6 1.41 8.418,800 17,274 15,691 13,977 11,1791.59 11.5 1.64 10.3 1.67 9.9 1.67 9.7 1.59 9.119,718 18,277 16,735 15,243 12,9341.83 12.9 1.88 11.6 1.92 11.1 1.94 11.0 1.88 10.520,474 19,097 17,590 16,210 14,2302.05 14.2 2.10 12.8 2.15 12.2 2.17 12.0 2.14 11.721,501 20,199 18,749 17,451 15,8352.37 15.9 2.43 14.5 2.48 13.7 2.51 13.5 2.50 13.322,689 21,465 20,090 18,833 17,496 12,9712.79 17.4 2.85 16.0 2.90 15.1 2.94 14.8 2.95 14.7 2.77 13.423,986 22,837 21,546 20,311 19,141 15,5463.30 19.0 3.36 17.6 3.42 16.7 3.46 16.3 3.49 16.1 3.38 15.325,499 24,424 23,230 22,020 20,937 18,113 13,2783.96 21 4.03 19.5 4.09 18.5 4.15 18.0 4.18 17.8 4.14 17.6 3.82 16.326,741 25,722 24,599 23,424 22,367 19,987 16,1254.57 23 4.64 21 4.71 20 4.77 19.7 4.81 19.5 4.82 19.5 4.60 18.327,821 26,845 25,778 24,642 23,595 21,472 18,1775.14 24 5.22 23 5.29 22 5.35 21 5.41 21 5.45 21 5.29 2029,010 28,077 27,066 25,978 24,938 22,993 20,214 16,1025.83 27 5.91 25 5.98 24 6.05 23 6.11 23 6.18 23 6.08 22 5.74 2130,252 29,361 28,401 27,366 26,341 24,497 22,165 18,7336.61 29 6.70 28 6.77 26 6.85 26 6.91 25 7.00 25 6.96 25 6.71 2331,333 30,473 29,555 28,566 27,561 25,764 23,720 20,727 16,5387.35 31 7.43 30 7.51 29 7.59 28 7.66 27 7.76 27 7.77 27 7.58 26 7.12 2432,575 31,750 30,874 29,935 28,961 27,193 25,381 22,831 19,3908.26 34 8.35 32 8.43 31 8.51 30 8.59 30 8.70 29 8.75 29 8.62 28 8.30 2733,764 32,970 32,130 31,234 30,295 28,546 26,878 24,692 21,6999.20 37 9.29 35 9.37 34 9.46 33 9.54 32 9.67 32 9.74 31 9.67 31 9.42 29.534,952 34,187 33,380 32,525 31,622 29,891 28,310 26,411 23,79210.20 40 10.30 38 10.39 37 10.47 36 10.56 35 10.70 34 10.79 34 10.78 34 10.58 3335,709 34,960 34,173 33,341 32,462 30,744 29,200 27,442 25,05010.88 42 10.97 40 11.07 39 11.16 38 11.24 37 11.39 36 11.50 35 11.51 35 11.35 34RPM245265285302330348365379398420444472495515537560580603625647661Performance shown is for Type A: free inlet, free outlet. Performance ratings do not include the effects of appurtenances (accessories).Power rating (BHP) does not include transmission losses. Bearing losses are included.The sound ratings shown are loudness values in hemispherical sones at 1.5 m (5 ft) in a hemispherical free field calculated per AMCA Standard 301.Values shown are for Installation Type A: free inlet hemispherical sone levels.ALL SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE 17