Acme Engineering LQ-S12 User Manual

Direct Drive Propeller Roof Fan

Model LQ

Model LQ ventilators are direct drive propeller roof fans designed
to deliver large volumes of air at high static pressure. LQ fans
operate more quietly than conventional propeller roof ventilators
and are recommended for applications requiring lower noise
levels. The low silhouette of the LQ harmonizes with modern
architectural design.

LQ EXHAUST DIMENSIONS

Fan

Model

LQ10 22.00 6.61 18.63 2.36 4.41 17.50 x 17.50 AR14 C20.5 DB14LQ
LQ12 24.00 6.74 21.00 2.49 7.88 19.50 x 19.50 AR16 C22.5 DB16LQ
LQ14 26.00 8.10 24.00 3.35 8.06 21.50 x 21.50 AR18 C24.5 DB18LQ
LQ16 28.00 9.83 27.63 4.58 9.00 23.50 x 23.50 AR20 C26.5 DB20LQ
LQ18 31.00 10.76 31.60 5.01 7.42 26.50 x 26.50 AR23 C29.5 DB23LQ
LQ21 34.00 12.09 36.72 5.47 9.00 29.50 x 29.50 AR26 C32.5 DB26LQ
LQ24 38.00 13.70 41.38 5.20 11.25 33.50 x 33.50 AR30 C36.5 DB30LQ
LQ30 46.00 15.89 52.13 6.89 13.06 41.50 x 41.50 AR38 C44.5 DB38LQ
LQ36 52.50 19.00 62.38 8.13 12.75 48.00 x 48.00 AR44 C51 DB44LQ

Dimensions are shown in inches.
*Recommended maximum.
**Requires DB damper box.

Fan

Model

LQ-S12 24.00 7.24 24.00 2.50 7.88 19.50 x 19.50 WAGC16 C22.5 DB16LQ
LQ-S14 26.00 9.41 27.63 4.16 8.06 21.50 x 21.50 WAGC18 C24.5 DB18LQ
LQ-S16 28.00 10.31 31.60 4.56 9.00 23.50 x 23.50 WAGC20 C26.5 DB20LQ
LQ-S18 31.00 11.84 36.00 5.22 10.66 26.50 x 26.50 WAGC23 C29.5 DB23LQ
LQ-S21 34.00 13.48 41.38 4.98 13.45 29.50 x 29.50 WAGC26 C32.5 DB26LQ
LQ-S24 38.00 13.70 41.38 5.20 11.25 33.50 x 33.50 WAGC30 C36.5 DB30LQ
LQ-S30 46.00 15.89 52.13 6.89 13.06 41.50 x 41.50 WAGC38 C44.5 DB38LQ
LQ-S36 52.50 18.67 82.00 9.67 12.81 48.00 x 48.00 WAGC44 C51 DB44LQ

Dimensions are shown in inches.
*Recommended maximum.
**Requires DB damper box.

BCEF

A

LQ-S SUPPLY DIMENSIONS

BCEF

A

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*

Roof

Opening*

Damper
Model**

Damper
Model**

Curb

Model

Curb

Model

Damper

Box

Model

Damper

Box

Model

Construction Features

Housing

Hood, orifice and curbcap constructed of heavy gauge

•

aluminum
Removable hood for easy access to motor and propeller

•

Large streamlined orifice permits efficient, less turbulent

•

airflow
Rugged steel frame transmits weight of motor and propeller

•

directly to curbcap
Birdscreen constructed of heavy gauge galvanized steel wire

•

mesh

Propeller

Advanced tear-drop blade design for low noise performance

•

with a minimum of air turbulence
Constructed of aluminum blades fastened to a formed steel

•

hub with heavy duty rivets
Precision balanced for smooth vibration free operation

•

Motors

Totally enclosed continuous duty type with lubricated sealed

•

ball bearings
Located in the full airstream for cooler operation and longer life

•

under continuous duty

Finish

Charcoal baked enamel finish is standard on all steel parts

•

Options/Accessories

•

Prefabricated Curbs

•

Dampers

•

Damper Boxes

•

Coatings

•

Solid State Controllers not mounted or wired

•

NEMA 3R disconnect not mounted or wired

•

Hinge Kit

U.L. 705 Listed CSA Certified

Consult your Acme representative for availability.

Propeller Roof Fans

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EXHAUST VENTILATORS

PERFORMANCE DATA

Tip

Fan

Model

RPM

Speed

Ft./

Min.

LQ108LO 1500 3925 .03 4.4 540 440 225 *111 19
LQ108HI 1650 4320 .03 7.1 590 505 295 185 *111 19
LQ12A6 1160 3590 .05 5.5 840 685 475 270 135 .054 38
LQ129LO 1350 4180 .11 6.7 975 845 695 500 335 210 .084 26
LQ129HI 1550 4795 .11 9.7 1120 1005 885 740 565 415 310 200 .128 26
LQ12D4 1760 5445 .17 11.3 1275 1180 1070 955 820 665 520 420 325 235 155 .187 40
LQ14C6 1160 4150 .13 9.7 1310 1155 890 640 420 .105 49
LQ14E4 1760 6295 .25 15.4 1655 1565 1465 1360 1205 1000 895 790 685 590 485 .242 49
LQ14F4 1760 6295 .33 13.5 2000 1900 1790 1670 1510 1250 1080 950 800 670 540 .366 47
LQ16D8-1 860 3560 .17 6.1 1360 1115 635 350 .071 55
LQ16D8-2 860 3560 .17 5.1 1525 1245 820 480 .092 55
LQ16C6 1160 4800 .13 11.1 1840 1670 1470 1050 770 570 370 .175 55
LQ16D6 1160 4800 .17 8.8 2050 1870 1650 1290 980 730 530 .225 57
LQ16F4 1760 7280 .33 21 2290 2200 2100 1980 1830 1580 1390 1270 1150 1030 910 710 .512 53
LQ16G4 1760 7280 .50 18.4 2790 2680 2570 2470 2320 2140 1700 1540 1360 1180 1060 800 .610 63
LQ16H4 1760 7280 .75 16.9 3160 3010 2870 2740 2600 2440 2130 1930 1750 1550 1350 1020 .783 67
LQ18D8 860 4080 .17 6.3 1940 1620 1230 850 490 .106 67
LQ18D8 860 4080 .17 7.0 2400 2080 1670 1110 640 .178 67
LQ18E6 1160 5505 .25 11.2 2620 2390 2140 1880 1530 1270 1020 810 550 .259 65
LQ18G6 1160 5505 .50 11.7 3240 3000 2760 2540 2000 1660 1310 920 700 .436 79
LQ18H4 1760 8350 .75 18.3 3970 3810 3650 3500 3340 3200 3030 2840 2580 2390 2190 1840 1530 1250 .905 79
LQ18J4 1760 8350 1.00 18.7 4340 4190 4030 3870 3720 3560 3380 3160 2870 2620 2420 2040 1670 1310 1.085 83
LQ18K4 1760 8350 1.50 23 4920 4780 4620 4460 4300 4120 3960 3820 3680 3120 2820 2420 1940 1460 1.530 84
LQ21D8 860 4690 .17 8.4 2820 2510 1790 1480 1000 .190 149
LQ21E8 860 4690 .25 8.1 3220 2760 2080 1550 1150 .252 151
LQ21F8 860 4690 .33 9.0 3570 3120 2400 2050 1460 .331 161
LQ21G6-1 1160 6325 .50 12.8 3800 3520 3230 2780 2230 1950 1780 1490 1000 .468 161
LQ21G6-2 1160 6325 .50 13.1 4350 4050 3720 3260 2650 2240 2020 1680 1110 .620 161
LQ21H6 1160 6325 .75 13.5 4820 4540 4160 3700 3100 2800 2750 2140 1400 .818 165
LQ21K4 1760 9595 1.50 26 5760 5580 5400 5210 5020 4830 4610 4300 3940 3460 3180 2880 2670 2250 1.635 166
LQ21L4 1760 9595 2.00 25 6540 6370 6170 5960 5750 5540 5270 4830 4410 4100 3800 3280 3000 2590 2.160 165
LQ24E8 860 5430 .25 7.6 3570 3175 2475 2010 1650 .285 172
LQ24H6 1160 7325 .75 14.1 4700 4450 3980 3400 2980 2660 2380 2080 1670 1210 .700 186
LQ24J6 1160 7325 1.00 16.9 5560 5280 4960 4600 4200 3740 3390 3130 2860 2530 2040 .997 208

Propeller Roof Fans

LQ30H8 860 6700 .75 19.1 7180 6780 6220 5400 4450 3970 3570 3060 2440 .837 292
LQ30J8 860 6700 1.00 14.5 9060 8520 8000 7400 6350 5300 4980 4500 3880 3120 2230 1.213 303
LQ30L6 1160 9035 2.00 27 9450 9160 8820 8450 7970 7330 6400 5900 5580 5270 4950 4280 3500 2300 2.070 336
LQ30M6 1160 9035 3.00 25 12000 11620 11230 10800 10400 9960 9510 8550 7620 7120 6790 6200 5510 4650 2.850 342
LQ36K8 860 8020 1.50 21 11150 10530 9870 8950 7430 6600 6300 5900 5300 1.860 409
LQ36L8 860 8020 2.00 17.9 14100 13500 12800 12100 11000 9300 8600 8200 7700 7000 5900 2.420 415

HP

Sones

@

CFM vs. Static Pressure

.000"

.000" .125" .250" .375" .500" .625" .750" .875" 1.000" 1.125" 1.250" 1.500" 1.750" 2.000" lbs.

SP

Max.
BHP

Est.

Ship

Wt.

*Watts

Performance certified is for installation Type A - Free inlet, Free outlet. Performance ratings include the effects of a birdscreen. The sound level 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. The brake horsepower capability of a fan motor is dependent of the degree of cooling the motor receives from the moving airstream over
the motor. The above motor loadings do not overheat the motor and are within NEMA recommended limits. It is therefore not detrimental to the motor and is economically
desirable.

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