Acme Engineering EV18 User Manual
Hoods and Gravity Ventilators
Models EV, IV, LEV, and LIV
Construction Features
Hood and base constructed of heavy gauge aluminum
•
Rigid structural aluminum braced for extra strength
•
Birdscreen constructed of heavy gauge galvanized steel
•
wire mesh
Miter cut and welded curb base for extra strength and water
•
tightness
EV/IV
Roof Vents
EV/IV
Curb for EV/IV and LEV/LIV
Models EV and IV are low silhouette exhaust (EV) and
•
intake (IV) ventilators
Full 360° perimeter hood opening for greater air flow
•
performance
Deep hood design for protection from blowing rain and snow
•
LEV/LIV
Models LEV and LIV are multi-tier louvered exhaust (LEV)
•
and intake (LIV) ventilators
Vertical snow and storm baffle on base to guard against
•
driven rain and snow
Extruded aluminum louvers miter cut and welded at each
•
corner.
Options/Accessories
•
Hinged Hood
•
Insulated Hood
•
Insect Screens
•
Aluminum Birdscreen
•
Coatings
•
Galvanized Steel Construction (EV/IV only)
•
100 MPH Construction
•
Filters
•
Exhaust Relief Type
AR Damper
Automatic counter balanced
Manual operated
Motorized
•
Air Intake Type
WAGC Damper
Manual operated
Motorized
LEV/LIV
Page 92
MODEL EV - GRAVITY EXHAUST VENTILATORS
Throat
Curb
Size
Cap
AxB
12 x 12 20 x 20 18 18 7 667 1054 1490 16 x 28 24 x 36 26 38 7 1950 3083 4360 20 x 84 28 x 92 35 98 9 5818 9199 13010
12 x 14 20 x 22 18 20 7 772 1220 1726 16 x 30 24 x 38 26 40 7 2088 3302 4670 20 x 96 28 x 104 35 111 9 6440 10182 14400
12 x 16 20 x 24 18 22 7 881 1394 1971 16 x 36 24 x 44 26 46 7 2370 3748 5300 20 x 108 28 x 112 35 123 9 7413 11722 16577
12 x 18 20 x 36 19 25 7 993 1570 2221 16 x 40 24 x 48 26 50 7 2656 4200 5940 20x 120 28 x 128 36 136 9 8343 13191 18655
12 x 20 20 x 28 19 27 7 1059 1675 2368 16 x 42 24 x 50 26 52 7 2789 4410 6236
12 x 22 20 x 30 19 29 7 1185 1874 2650 16 x 48 24 x 56 27 59 7 3190 5045 7134 22 x 22 30 x 30 32 32 9 2223 3515 4970
12 x 24 20 x 32 20 32 7 1252 1980 2800 16 x 54 24 x 62 27 65 7 3354 5303 7500 22 x 24 30 x 32 32 34 9 2342 3702 5236
12 x 28 20 x 36 20 36 7 1462 2312 3270 16 x 60 24 x 68 27 71 7 3578 5657 8000 22 x 28 30 x 36 33 39 9 2679 4236 5990
12 x 30 20 x 38 20 38 7 1565 2475 3500 16 x 66 24 x 74 28 78 7 3763 5949 8413 22 x 30 30 x 38 33 41 9 2871 4540 6420
12 x 36 20 x 44 21 45 7 1775 2807 3970 16 x 72 24 x 80 28 84 7 4105 6490 9178 22 x 36 30 x 44 34 48 9 3260 5155 7290
12 x 40 20 x 48 21 48 7 1954 3090 4370 16 x 80 24 x 88 28 92 7 4387 6937 9810 22 x 40 30 x 48 34 52 9 3508 5547 7845
12 x 42 20 x 50 22 52 7 2048 3239 4580 16 x 84 24 x 92 28 96 7 4655 7361 10410 22 x 42 30 x 50 36 56 9 3757 5940 8400
12 x 48 20 x 56 21 57 7 2392 3782 5348 16 x 96 24 x 104 28 108 7 5152 8146 11520 22 x 48 30 x 56 35 61 9 4214 6663 9423
12 x 54 20 x 62 22 64 7 2567 4059 5741 16 x 108 24 x 116 29 121 7 5578 8820 12473 22 x 54 30 x 62 36 68 9 4521 7149 10110
12 x 60 20 x 68 22 70 7 2798 4423 6255 16 x 120 24 x 128 29 133 7 6261 9899 14000 22 x 60 30 x 68 37 75 9 4919 7778 11000
12 x 66 20 x 74 22 76 7 2998 4740 6704
12 x 72 20 x 80 22 82 7 3204 5066 7165 18 x 18 26 x 26 26 26 8 1543 2439 3450 22 x 72 30 x 80 37 87 9 5756 9100 12870
12 x 80 20 x 88 22 90 7 3437 5434 7685 18 x 20 26 x 28 27 29 8 1690 2672 3779 22 x 80 30 x 88 38 96 9 6176 9765 13810
12 x 84 20 x 92 22 94 7 3719 5879 8315 18 x 22 26 x 30 27 31 8 1856 2934 4149 22 x 84 30 x 92 38 100 9 6532 10327 14605
12 x 96 20 x 104 22 106 7 4119 6513 9210 18 x 24 26 x 32 27 33 8 1917 3031 4287 22 x 96 30 x 104 38 112 9 7084 11201 15840
12 x 108 20 x 116 22 120 7 4448 7033 9946 18 x 28 26 x 36 28 38 8 2191 3465 4900 22 x 108 30 x 116 39 125 9 8155 12894 18235
12 x 120 20 x 128 22 132 7 4896 7741 10947 18 x 30 26 x 38 28 40 8 2348 3712 5250 22 x 120 30 x 128 39 137 9 8975 14191 20070
14 x 14 22 x 22 20 20 7 919 1453 2055 18 x 40 26 x 48 29 51 8 2929 4632 6550 24 x 24 32 x 32 34 34 11 2456 3883 5491
14 x 16 22 x 24 20 22 7 1051 1662 2350 18 x 42 26 x 50 29 53 8 3077 4865 6880 24 x 28 32 x 36 35 39 11 2864 4528 6403
14 x 18 22 x 26 22 26 7 1181 1867 2640 18 x 48 26 x 56 30 60 8 3515 5558 7860 24 x 30 32 x 38 36 42 11 3070 4854 6864
14 x 20 22 x 28 22 28 7 1237 1955 2765 18 x 54 26 x 62 30 66 8 3852 6091 8614 24 x 36 32 x 44 37 49 11 3486 5512 7796
14 x 22 22 x 30 22 30 7 1386 2192 3100 18 x 60 26 x 68 30 72 8 4025 6364 9000 24 x 40 32 x 48 38 54 11 3904 6173 8730
14 x 24 22 x 32 22 32 7 1425 2253 3187 18 x 66 26 x 74 31 79 8 4232 6691 9463 24 x 42 32 x 50 38 56 11 4101 6484 9170
14 x 28 22 x 36 22 36 7 1671 2642 3736 18 x 72 26 x 80 31 85 8 4618 7301 10326 24 x 48 32 x 56 38 62 11 4687 7410 10480
14 x 30 22 x 38 23 39 7 1825 2885 4080 18 x 80 26 x 88 31 92 8 4955 7835 11081 24 x 54 32 x 62 39 69 11 5031 7955 11250
14 x 36 22 x 44 23 45 7 2075 3281 4640 18 x 84 26 x 924 31 97 8 5135 8119 11483 24 x 60 32 x 68 39 75 11 5367 8485 12000
14 x 40 22 x 48 23 49 7 2323 3673 5195 18 x 96 26 x 1046 32 110 8 5577 8818 12471 24 x 66 32 x 74 40 82 11 5756 9100 12870
14 x 42 22 x 50 24 52 7 2393 3783 5350 18 x 108 26 x 116 32 122 8 6400 10119 14310 24 x 72 32 x 80 40 88 11 6279 9928 14040
14 x 48 22 x 56 24 58 7 2789 4410 6236 18 x 120 26 x 128 33 135 8 6907 10921 15444 24 x 80 32 x 88 40 96 11 6878 10876 15381
14 x 54 22 x 62 24 64 7 3059 4836 6839
14 x 60 22 x 68 24 70 7 3264 5160 7298 20 x 20 28 x 28 29 29 9 1802 2850 4030 24 x 96 32 x 104 41 113 11 7887 12471 17636
14 x 66 22 x 74 24 77 7 3502 5536 7830 20 x 22 28 x 30 29 31 9 1981 3132 4430 24 x 108 32 x 116 42 126 11 8709 13770 19473
14 x 72 22 x 80 24 84 7 3738 5911 8359 20 x 24 28 x 32 30 34 9 2177 3443 4869 24 x 120 32 x 128 42 138 11 9791 15481 21894
14 x 80 22 x 88 25 92 7 4012 6344 8971 20 x 28 28 x 36 31 39 9 2536 4010 5672
14 x 84 22 x 92 25 95 7 4243 6709 9487 20 x 30 28 x 38 31 41 9 2661 4207 5950 28 x 28 36 x 36 40 40 13 3478 5499 7777
14 x 96 22 x 104 26 108 7 4805 7598 10745 20 x 36 28 x 44 31 47 9 2961 4681 6620 28 x 30 36 x 38 41 43 13 3654 5777 8170
14 x 108 22 x 116 26 120 7 5189 8205 11604 20 x 40 28 x 48 32 52 9 3256 5148 7280 28 x 36 36 x 44 41 49 13 4146 6555 9270
14 x 120 22 x 128 26 132 7 5712 9031 12772 20 x 42 28 x 50 32 54 9 3417 5402 7640 28 x 40 36 x 48 43 55 13 4651 7354 10400
16 x 16 24 x 24 23 23 7 1199 1895 2680 20 x 54 28 x 62 33 67 9 4277 6762 9563 28 x 48 36 x 56 43 63 13 5469 8648 12230
16 x 18 24 x 26 24 26 7 1342 2121 3000 20 x 60 28 x 68 33 73 9 4472 7071 10000 28 x 54 36 x 62 45 70 13 5867 9277 13120
16 x 20 24 x 28 24 28 7 1470 2324 3286 20 x 66 28 x 74 34 80 9 4893 7736 10941 28 x 60 36 x 68 44 76 13 6139 9707 13728
16 x 22 24 x 30 24 30 7 1616 2555 3613 20 x 72 28 x 80 34 86 9 5340 8444 11941 28 x 66 36 x 74 45 83 13 6582 10408 14719
Hood Size CFM @ IN. W.G. Throat
C D E .050" .125" .250" C D E .050" .125" .250" C D E .050" .125" .250"
12
Curb
Size
AxB
16 x 24 24 x 32 25 33 7 1668 2638 3730 20 x 80 28 x 88 34 94 9 5728 9057 12809
Cap
Hood Size CFM @ IN. W.G. Throat
Size
AxB
Curb
Cap
Hood Size CFM @ IN. W.G.
22
18
14
18 x 36 26 x 44 29 47 8 2614 4133 5844
20
22 x 66 30 x 74 37 81 9 5277 8344 11800
24
24 x 84 32 x 92 40 100 11 6981 11038 15610
28
16
20 x 48 28 x 56 33 61 9 3985 6300 8910 28 x 42 36 x 50 43 59 13 4785 7566 10700
Roof Vents
Exhaust/Relief Ventilators havea1to1ratio of hood perimeter opening to throat area. Maximum design air velocity is 1200 fpm.
Page 93
MODEL EV - GRAVITY EXHAUST VENTILATORS
Throat
Curb
Size
Cap
AxB
28 x 72 36 x 80 45 89 13 7476 11821 16718 40 54
28 x 80 36 x 88 46 98 13 7862 12431 17580 40 x 42 48 x 50 57 59 15 6974 11027 15595 54 x 54 62 x 62 77 77 19 11319 17897 25310
28 x 84 36 x 92 46 102 13 8490 13425 18985 40 x 48 48 x 56 59 67 15 7813 12353 17470 54 x 60 62 x 68 79 85 19 12075 19092 27000
28 x 96 36 x 104 47 115 13 9202 14549 20576 40 x 54 48 x 62 59 73 15 8385 13258 18750 54 x 66 62 x 74 79 91 19 12951 20478 28960
28 x 108 36 x 116 48 128 13 10160 16065 22719 40 x 60 48 x 68 60 80 15 8944 14142 20000 54 x 72 62 x 80 80 98 19 13853 21904 30977
28 x 120 36 x 128 48 140 13 11423 18062 25543 40 x 66 48 x 74 61 87 15 9593 15167 21450 54 x 80 62 x 88 81 107 19 14866 23505 33242
30 x 30 38 x 38 43 43 13 3893 6156 8706 40 x 80 48 x 88 63 103 15 11230 17755 25110 54 x 96 62 x 104 83 125 19 17388 27492 38880
30 x 36 38 x 44 44 50 13 4537 7174 10145 40 x 84 48 x 92 64 108 15 11411 18082 25515 54 x 108 62 x 116 85 139 19 19154 30285 42830
30 x 40 38 x 48 45 55 13 4884 7722 10920 40 x 96 48 x 108 64 120 15 12880 20365 28800 54 x 120 62 x 128 86 152 19 21131 33411 47250
30 x 42 38 x 50 45 57 13 5125 8103 11460 40 x 108 48 x 116 65 133 15 14515 22950 32456 60
30 x 48 38 x 56 46 64 13 5745 9083 12846 40 x 120 48 x 128 66 146 15 16319 25802 36490 60 x 60 68 x 68 86 86 21 13156 20801 29417
30 x 54 38 x 62 47 71 13 6166 9749 13787 42 60 x 66 68 x 74 87 93 21 14387 22748 32170
30 x 60 38 x 68 48 78 13 6708 10607 15000 42 x 42 50 x 50 59 59 15 7178 11349 16050 60 x 72 68 x 80 88 100 21 15392 24337 34418
Roof Vents
30 x 66 38 x 74 48 84 13 7196 11377 16090 42 x 48 50 x 56 61 67 15 8202 12968 18340 60 x 80 64 x 88 89 109 21 16847 26637 37670
30 x 72 38 x 80 49 91 13 7696 12169 17209 42 x 54 50 x 62 62 74 15 8806 13923 19690 60 x 84 68 x 92 90 114 21 17450 27591 39020
30 x 80 38 x 88 49 99 13 8258 13056 18464 42 x 60 50 x 68 64 82 15 9585 15155 21433 60 x 96 68 x 104 91 127 21 19320 30547 43200
30 x 84 38 x 92 50 104 13 8725 13796 19510 42 x 66 50 x 74 65 89 15 10071 15924 22520 60 x 108 68 x 116 93 141 21 20918 33074 46774
30 x 96 38 x 104 50 116 13 9859 15588 22045 42 x 72 50 x 80 65 95 15 10988 17374 24570 60 x 120 68 x 128 94 154 21 23023 36402 51480
30 x 108 38 x 116 51 129 13 10886 17212 24342 42 x 80 50 x 88 66 104 15 11793 18646 26370 66
30 x 120 38 x 128 52 142 13 12239 19352 27368 42 x 84 50 x 92 66 108 15 12470 19717 27883 66 x 66 74 x 74 94 94 21 15831 25032 35400
36 x 36 44 x 44 52 52 15 5558 8788 12427 42 x 108 50 x 116 68 134 15 14932 23610 33390 66 x 80 74 x 88 94 113 21 18168 28727 40625
36 x 40 44 x 48 53 57 15 5979 9454 13370 42 x 120 50 x 128 69 147 15 16435 25986 36750 66 x 84 74 x 92 97 115 21 19199 30356 42930
36 x 42 44 x 50 53 59 15 6276 9923 14034 48 66 x 96 74 x 104 97 131 21 21252 33602 47520
36 x 48 44 x 56 54 66 15 7175 11345 16044 48 x 48 56 x 56 68 68 17 9192 14533 20553 66 x 108 74 x 116 97 147 21 23465 37102 52470
36 x 54 44 x 62 55 73 15 7549 11936 16880 48 x 54 56 x 62 70 76 17 10062 15910 22500 66 x 120 74 x 128 96 165 21 26359 41677 58941
36 x 60 44 x 68 56 80 15 8050 12728 18000 48 x 60 56 x 68 71 83 17 10733 16971 24000 72
36 x 66 44 x 74 56 86 15 8809 13929 19698 48 x 66 56 x 74 72 90 17 11511 18201 25740 72 x 72 80 x 80 96 110 21 19731 31198 44120
36 x 72 44 x 80 57 93 15 9613 15199 21494 48 x 72 56 x 80 73 97 17 12558 19856 28080 72 x 80 80 x 88 96 120 21 20631 32620 46132
36 x 80 44 x 88 58 102 15 10107 15981 22600 48 x 80 56 x 88 74 106 17 13475 21305 30130 72 x 84 80 x 92 96 126 21 20943 33114 46830
36 x 84 44 x 92 58 106 15 10469 16553 23410 48 x 84 56 x 92 75 111 17 13962 22076 31220 72 x 96 80 x 104 96 143 21 22733 35945 50833
36 x 96 44 x 104 59 119 15 11367 17972 25417 48 x 96 56 x 104 75 123 17 15456 24438 34560 72 x 108 80 x 116 96 163 21 25599 40475 57240
36 x 108 44 x 116 60 132 15 13063 20655 29210 48 x 108 56 x 116 77 137 17 17418 27540 38947 72 x 120 80 x 128 96 180 21 28174 44548 63000
36 x 120 44 x 128 60 144 15 14378 22733 32150 48 x 120 56 x 128 78 150 17 19170 30311 42866
Hood Size CFM @ IN. W.G. Throat
C D E .050" .125" .250" C D E .050" .125" .250" C D E .050" .125" .250"
30 40 x 72 48 x 80 62 94 15 10465 16546 23400 54 x 84 62 x 92 82 112 19 15706 24834 35120
36 42 x 96 50 x 104 67 121 15 13803 21824 30864 66 x 72 74 x 80 94 102 21 17267 27301 38610
Size
AxB
Curb
Cap
Hood Size CFM @ IN. W.G. Throat
Size
AxB
Curb
Cap
Hood Size CFM @ IN. W.G.
Exhaust/Relief Ventilators havea1to1ratio of hood perimeter opening to throat area. Maximum design air velocity is
1200 fpm.
Page 94
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