Acme Engineering UBH24 User Manual
Belt Drive Tubeaxial Roof Exhauster
Model UBH
Model UBH belt drive tubeaxial exhausters are ideally suited for
roof exhaust applications that require the motor, drives and
bearing located out of the airstream. The high velocity upblast
discharge of the UBH disperses air high above the buildings
roof. Capacities up to 61,236 CFM and up to 1 1/4 inch static
pressure. UBH exhausters can operate continuously in air
stream temperatures up to 200°F.
Construction Features
Housing
Constructed of heavy gauge steel with charcoal baked
•
enamel
Rolled flange at each end for structural strength and rigidity
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Windband
Constructed of heavy gauge steel with rolled flange
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Cross channel member provides lateral rigidity and open
•
position stop for butterfly dampers
Butterfly Dampers
Constructed of heavy gauge aluminum
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Stainless steel hinge pins and nylon bearings provide quiet,
•
low friction operation
Dampers open and close against rubber bumpers for quiet
•
operation
Water trough under damper hinge provides drainage for rain,
•
melting snow and ice
Magnetic latches hold dampers closed when exhauster not in
•
use
Aluminum Propeller
Constructed of welded heavy gauge aluminum
•
High efficiency circular arc airfoil blade design
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Precision balanced for smooth vibration free operation
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Heavy gauge steel propeller standard on UBH54
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DIMENSIONS
Fan
Model
UBH16 27.00 34.89 22.50 20.39 22.5 x 22.5 C25.5
UBH18 31.00 36.38 24.50 20.88 26.5 x 26.5 C29.5
UBH24 38.00 40.75 30.00 20.75 33.5 x 33.5 C36.5
UBH30 46.00 54.25 37.50 29.25 41.5 x 41.5 C44.5
Propeller Roof Fans
UBH36 52.50 64.88 45.00 28.38 48 x 48 C51
UBH42 60.00 67.38 52.50 35.00 55.5 x 55.5 C58.5
UBH48 64.00 74.75 60.00 37.50 59.5 x 59.5 C62.5
UBH54 67.00 84.88 67.50 43.63 62.5 x 62.5 C65.5
UBH60 75.00 94.30 75.00 47.80 70.5 x 70.5 C73.5
Dimensions are shown in inches.
*Recommended maximum
ABC E
Acme Engineering & Manufacturing Corporation certifies
that the models shown herein are licensed to bear the
AMCA Seal. The ratings shown are based on tests and
procedures performed in accordance with AMCA
Publication 211 and AMCA Publication 311 and comply
with the requirements of the AMCA Certified Ratings
Program.
Roof
Opening*
U.L. 705 Listed CSA Certified
Consult your Acme representative for availability.
Curb
Model
Bearings
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Permanently lubricated in an Acme D.S. split pillow block
housing
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Bearings are resiliently mounted in neoprene rings
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Rated at L50life of 200,000 hours
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5 year limited warranty on Acme D.S. pillow block bearings
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Pillow block bearings standard on UBH60
Drive Assembly
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Cast iron drives sized for 150% of drive horsepower
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Static free, oil and heat resistant belts
Motor
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Continuous duty motors by nationally recognized
manufacturers
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Prelubricated ball bearings requiring minimum maintenance
Belt & Bearing Enclosure
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Streamline enclosure virtually eliminates turbulence and air
drag
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Bearings are ventilated with outside air for longer life
Motor Cover
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Heavy gauge steel cover protects motor and drive from
adverse weather
Options/Accessories
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Roof Curbs
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Disconnect Switches
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Inlet/Outlet Guard
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Coatings
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Fusible Heat Release Damper Link
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SE Option U.L. Listed "Power Ventilator for Smoke Control
Systems"
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PERFORMANCE DATA
Fan
Model
UBH16E1/
UBH16F1/
UBH16G1/
UBH16H3/
UBH16J 1
UBH18F1/
UBH18G1/
UBH18H3/
UBH18J 1
UBH18K 11/
UBH24G1/
UBH24H3/
UBH24J 1
UBH24K 11/
UBH24L 2
UBH24M 3
UBH30H3/
UBH30J 1
UBH30K 11/
UBH30L 2
UBH30M 3
UBH30N 5
UBH36J 1
UBH36K 11/
UBH36L 2
UBH36M 3
UBH36N 5
UBH42K 11/
UBH42L 2
UBH42M 3
UBH42N 5
UBH42P 71/
UBH42R 10
UBH48K 11/
UBH48L 2
UBH48M 3
UBH48N 5
UBH48P 71/
UBH48R 10
UBH54K 11/
UBH54L 2
UBH54M 3
UBH54N 5
UBH54P 71/
UBH54R 10
UBH54S 15
UBH60M 3
UBH60N 5
UBH60P 71/
UBH60R 10
UBH60S 15
UBH60T 20
Performance certified is for Installation Type A: Free Inlet, Free Outlet.
Performance ratings do not include the effects of appurtenances (accessories).
Power rating (BHP) does not include transmission losses.
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.
HP RPM
1800 7568 24 2273 2070 1794 .27 124
4
1976 8308 28 2495 2310 2081 1757 .36 130
3
2267 9532 32 2862 2702 2530 2304 2000 .54 132
2
2600 10931 42 3283 3142 3002 2829 2631 2365 2064 .81 134
4
2855 12004 48 3604 3477 3349 3217 3038 2854 2604 2074 1.08 138
1510 7214 23 3118 2862 2552 .37 140
3
1730 8266 27 3573 3349 3103 2795 .54 144
2
1980 9460 34 4089 3893 3697 3456 3171 2670 .81 148
4
2180 10416 38 4502 4324 4146 3950 3722 3437 2995 1.09 152
2495 11921 47 5153 4997 4842 4686 4506 4308 4105 3316 2605 1.63 156
2
1090 6950
2
1250 7980
4
1375 8770
1600 10200
2
1730 11040
1945 12400
856 6830
4
942 7520
1078 8600
2
1187 9480
1358 10850
1644 13140
698 6670
799 7640
2
880 8410
1007 9620
1193 11400
620 6900
2
683 7600
781 8690
926 10300
1060 11800
2
1170 13025
498 6320
2
548 6960
627 7960
743 9430
851 10800
2
936 11900
416 5881 21 23074 20424 17140 1.71 1566
2
458 6475 25 25403 23014 20325 16254 2.30 1575
524 7408 30 29064 26989 24793 22144 18038 3.41 1584
621 8779 40 34444 32700 30910 29003 26788 23991 5.76 1594
711 10052 53 39436 37916 36373 34780 33088 31186 28907 8.56 1676
2
783 11069 61 43430 42050 40657 39234 37761 36198 34463 30122 11.55 1706
870 12299 73 48255 47014 45765 44500 43207 41873 40472 37262 33186 15.85 1766
432 6786 28 32579 29779 26713 22539 3.24 1952
510 8011 36 38416 36104 33652 30906 27359 5.31 2072
590 9268 45 44494 42462 40387 38210 35793 32848 8.15 2175
2
640 10053 54 48265 46393 44494 42532 40447 38096 35275 10.43 2218
750 11781 69 56560 54965 53358 51724 50047 48300 46432 41960 35497 16.73 2395
812 12755 82 61236 59763 58282 56784 55258 53691 52061 48432 43912 21.39 2455
Tip
Speed
Max.
Sones
19.2
28
36
45
53
64
21
27
38
45
53
71
27
31
37
61
71
28
32
47
54
77
95
30
36
55
68
78
92
.000" .125" .250" .375" .500" .625" .750" 1.000" 1.250"
5488 4976 4292 0.50 367
6294 5852 5327 4624 0.75 372
6923 6521 6072 5549 4780 1.00 379
8056 7711 7365 6939 6496 5866 4875 1.53 388
8711 8391 8072 7706 7306 6835 6252 4633 2.00 399
9793 9509 9225 8941 8589 8233 7850 6765 2.83 410
8820 8300 .75 568
9740 9260 8360 1.00 574
11110 10400 9750 8850 7650 1.50 583
12130 11580 10920 10160 9340 7920 1.95 596
14000 13610 13040 12410 11720 11030 10080 3.00 607
16946 16519 16085 15639 15171 14671 14129 12842 5.30 615
12500 11230 1.07 805
14310 13230 11840 1.60 812
15770 14850 13600 12080 2.14 823
18040 17230 16200 15090 13660 11990 3.20 832
21380 20700 19950 19100 18160 16940 15810 12230 5.33 840
18330 16870 15160 1.73 1046
20190 18900 17510 15750 2.30 1049
23070 21960 20740 19300 17710 14760 3.43 1058
27860 26390 25450 24420 23230 21950 20580 5.73 1073
31400 30580 29740 28910 28030 26500 25870 23320 8.66 1148
34584 33779 32974 32169 31364 30463 29546 27651 10.91 1178
22115 20400 1.48 1366
24330 22830 20570 1.96 1375
27840 26500 24930 22660 19390 2.94 1384
33000 31930 30740 29240 27300 24770 21780 4.90 1394
37770 36890 35870 34670 33310 31770 29720 24600 7.36 1475
41580 40800 39860 38730 37790 36470 34970 31400 9.80 1506
CFM vs. Static Pressure
Max.
BHP
Est. Ship
Wts.
lbs.
Propeller Roof Fans
Hi-Temperature Bearings
High Temperature Construction Features Option SE
Copper Lubrication Lines
Dual Heat Resistant Belts
Heat Slinger
Steel Propeller
Motor Outside Airstream
Ventilated Belt and Bearing Enclosure
Fusible Link Damper Lifters
Fusible Link Damper Lifters Capable of Lifting 10 lbs./sq. ft., meets UL793
UL Listed “Power Ventilator for Smoke Control Systems”
For more information on this product contact your sales support.
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