QCLB/QCLBR/QCLBSH - Low Pressure Mixed Flow Fans

QCLB/QCLBR/QCLBSH - Low Pressure Mixed Flow Fans
Air Moving Solutions.
low pressure mixed flow fans
QCLB | QCLBR (Restaurant) | QCLBSH (Smoke & Heat)
BULLETIN 1070
March 2012
MixedFlowFans
Models
QCLB | QCLBR | QCLBSH
Benefits of Mixed Flow Fans
Twin City Fan Model QCLB Mixed Flow Fans combine the benefits of axial flow and centrifugal flow
fans. The QCLB has the advantages of an axial fan
in its compact design and straight-through airflow
combined with a centrifugal fan’s preferred acoustical
characteristics and high pressure capabilities.
Energy Savings
Mixed flow fans offer the most economy of operation when compared with equivalently sized tubular
centrifugal or axial fans with a higher and broader efficiency range. The lower operating speed for a given
performance also provides longer and more reliable
operation.
Sound Advantage
QCLB fans offer superior air and sound performance
and the sound levels are significantly lower than
tubular centrifugal and vaneaxial fans at comparable
performance points. All QCLB models are AMCA certified and carry the certified ratings seal for air and
sound.
QCLB
(Horizontal)
Wheel Design
Mixed flow wheels are designed with single surface,
die-formed, continuously-welded blades for stable
air performance throughout the operating range. The
wheel is statically and dynamically balanced prior to
assembly and rechecked for balance after assembly
by Twin City Fan & Blower.
Model QCLB is available with the
UL/cUL 705 listing for electrical,
File No. E158680.
Model QCLBR is UL/cUL 762 listed
for the exhaust of grease-laden air
as standard, File No. MH-25478.
Model QCLBSH is UL/cUL listed for
Smoke Control Systems as standard, File No. MH-29313, 500°F for
4 hours and 1000°F for 15 minutes.
Twin City Fan & Blower certifies that
the Type QCLB, QCLR and QCLBSH
Mixed Flow Fans 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. See
Bulletin 1071 for sound ratings.
2
Sizes
12.25" to 73" wheel diameters
Performance
Airflow to 105,000 CFM
Static pressure to 4.5" w.g.
Drive Configuration
Available in belt driven configuration.
Levels of Construction
Level 1 pressure capabilities to 2.5" w.g.
Level 2 pressure capabilities to 4.5" w.g.
Twin City Fan Bulletin 1070
MixedFlowFans
Models
QCLB | QCLBR | QCLBSH
QCLB
The QCLB Mixed Flow Fan is a popular choice for
many air supply, return, and exhaust air applications
in the HVAC industry for both constant or variable air
volume systems. The efficiency and sound characteristics of mixed flow fans are often desired in buildings such as hospitals, libraries, theaters, and general
offices. The heavy-duty construction of QCLB fans
also makes them suitable for many industrial applications handling ambient air.
QCLBR (Restaurant)
Twin City Fan & Blower offers a specially modified version of the QCLB fan designated as "QCLBR" (Mixed
Flow Restaurant Exhaust) for exhausting grease-laden
air from kitchens, restaurants, cooking and dishwasher
hoods. QCLBR is available in sizes 90 through 600.
Model QCLBR is CULUS 762 listed for exhaust of
grease-laden air. QCLBR is licensed to bear the AMCA
certified ratings seal for sound and air performance.
QCLB
(Vertical)
The QCLBR fan is available in all configurations
with the exception of vertical down (VDO and VDI).
QCLBSH (Smoke & Heat)
Twin City Fan & Blower offers a specially modified
version of the QCLB fan designated as "QCLBSH"
(Mixed Flow Smoke and Heat Exhaust) for smoke
control applications where temperatures can reach
1000°F. QCLBSH is available in sizes 90 through 600.
Model QCLBSH is CULUS 705 listed and CULUS listed
for smoke control systems for 500°F for 4 hours or
1000°F for 15 minutes. Vertical roof mounted configuration, with discharge cap, meets UL 793 Snow Load
Test requirements for butterfly dampers. QCLBSH is
licensed to bear the AMCA certified ratings seal for
sound and air performance.
The QCLBSH fan is available in all configurations with
the exception of vertical down (VDO and VDI).
©2012 Twin City Fan Companies, Ltd. All rights reserved
throughout the world. Bulletin illustrations cover the general
appearance of Twin City Fan & Blower products at the time
of publication and we reserve the right to make changes in
design and construction at any time without notice.
www.tcf.com
3
MixedFlowFans
Model QCLBR
Restaurant Fans
Model QCLBSH
Smoke & Heat Fans
Standard Product Features
Standard Product Features
• Belt guard, totally enclosed, ventilated (weather
cover for VRM)
• Belt tube, sealed
• Two cleanout doors located 180° apart (90° from
motor) 2" drain located 180° from motor (lowest
point for horizontal) vertical at the funnel
• Cooling fins on wheel
• Housing sealed with Hi-Temp caulk
•
•
•
•
•
•
Belt guard, ventilated (weather cover for VRM)
Belt tube, sealed
Two-groove drive minimum w/2.0 SF
Cooling fins on wheel
Stack cap with fusible link (for VRM)
Continuously welded housing
AIR
FLOW
(2) CLEANOUT DOORS
90 FROM MOTOR
180 FROM EACH OTHER
(Standard on Model QCLBR)
WEATHER COVER
(Optional on Models
QCLBR and QCLBSH)
O
O
2“ GREASE DRAIN
(Standard on Model QCLBR)
CURB CAP
(Optional on Models
QCLBR and QCLBSH)
GREASE BOX
(Optional on
Model QCLBR)
4
DISCHARGE CAP
(Optional on Models
QCLBR and QCLBSH)
CURB BASE
(Optional on Models
QCLBR and QCLBSH)
Twin City Fan Bulletin 1070
MountingConfigurations
Horizontal Construction
Vertical Construction
Horizontal construction
through 600.
90
Vertical construction is available on sizes 90
through 600.
Horizontal Base Mounted (HBM) — Support legs are
provided at each end of the fan for floor mounting.
Floor or Ceiling Mounted (VUI/VUO/VDI/VDO) —
Four vertical brackets are welded to either end of
the fan housing. Bracket location is determined by
airflow direction and support details (see drawing
below).
is
available
on
sizes
Horizontal Ceiling Hung (HCH) — For duct mounted
fans, four suspension clips are welded to the fan
casing to allow ceiling suspension using rod hangers.
Roof Mounted (VRM) — A curb cap provides a
weathertight seal for roof curb mounted fans. A
discharge cap and weather cover are also available for the upblast style roof ventilator.
Discharge Arrangements
Available Discharges by Model
QCLB
QCLBR
QCLBSH
HBM
HBM
HBM
HCH
HCH
HCH
VDI
N/A
N/A
VDO
N/A
N/A
VUI
VUI
VUI
VUO
VUO
VUO
VRM
VRM
VRM
A
HCH
Horizontal
Ceiling Hung
G
A
HBM
Horizontal
Base Mounted
C
G
C
E
NOTE: Horizontal motor positions shown from outlet end.
D
AIRFLOW
D
AIRFLOW
D
AIRFLOW
AIRFLOW
AIRFLOW
F
VUI
Vertical Discharge
Up, Floor Mount
Support Brackets
On Inlet
VUO
Vertical Discharge
Up,Ceiling Hung
Support Brackets
On Outlet
VDI
Vertical Discharge
Down, Ceiling Hung
Mounting Brackets
On Inlet
F
VDO
Vertical Discharge
Floor Mounted
On Outlet
www.tcf.com
VRM
Vertical Roof
Mounted
5
ConstructionFeatures
Housing
All fans are constructed of heavy-gauge steel and
continuously welded for strength and rigidity. All fans
are provided with punched inlet and outlet flanges
as standard.
Belt Guard
Totally enclosed, sealed belt guard is standard on
Model QCLB. Totally enclosed, non-sealed belt guard
is standard on Models QCLBR and QCLBSH, and
Model QCLB when an optional belt tube is provided.
Belt guards meet OSHA requirements.
Belt Guard & Adjustable Motor Base
Adjustable Motor Base
A heavy-duty adjustable motor base provides easy
and positive adjustment of belt tension.
Belt Tube
A belt tube encloses the belts and drive components,
protecting them from the airstream on Models QCLBR
and QCLBSH. A belt tube is an optional accessory
on Model QCLB.
Bolted Access Door
Bolted access door allows for inspection and maintenance of internal fan components. A hinged access
door is an available option.
Belt Tube
Extended Lube Lines
Lube lines with grease fittings are extended to the
outside of the fan housing on all models. Nylon lines
are standard on Model QCLB. Models QCLBR and
QCLBSH feature copper lube lines.
Straightening Vanes
Straightening vanes convert tangential velocity
pressure into useful static pressure, reducing
turbulence and increasing efficiency. Extensive testing
of various shapes and locations has resulted in the
most efficient aerodynamic design of the straightening
vanes.
Bolted Access Door
Drain
Drain (QCLBR)
A two inch drain allows drainage of grease to the
lowest point of the fan. Drain is located 180° from
the motor on vertical fans and at the lowest point
of the housing on horizontal fans. A grease box with
drain connection is an available option.
Universal Mounting Feet
Fan sizes 90-270 (non-curb mounted) come standard
with eight mounting brackets and four universal
mounting feet. This allows for easy mounting and motor position changes in the field.
Universal Mounting Feet
6
Twin City Fan Bulletin 1070
ConstructionFeatures
Inlet and Outlet Flanges
Inlet and outlet flanges with prepunched mounting
holes are standard on all sizes, providing a bolted
connection to ductwork.
Clean Out Doors (QCLBR)
Two cleanout doors are located 180° apart, providing
access to the wheel for cleaning.
Minimum 2-Groove Drive with 2.0 Service
Factor (QCLBSH)
Drives on Model QCLBSH are provided with a minimum of 2-grooves and with a service factor of 2.0
or greater to meet UL requirements for smoke control
systems.
Inner Cylinder
The inner tube is rigidly constructed to support the
shaft and bearings. The removable discharge cone
provides full access to the shaft, bearings and fan
sheave. It is strongly recommended that an access
door be provided in the ductwork adjacent to the
discharge end of the fan for such service.
Bearings
Standard bearings are selected to exceed the L-10
life of 80,000 hours at the maximum operating speed.
Mechanical Run Test & Final Vibration
Check
All fans are assembled for a mechanical run test and
final balance prior to shipment. Vibration readings are
taken on both fan bearings in the axial, horizontal
and vertical directions at the specified speed. Fans
are balanced to 0.15 in./sec. peak or less.
Shaft
Shaft diameters sized so that maximum operating
speed does not exceed 70% of first critical speed.
www.tcf.com
7
ProductAccessories
Belt Tube
A belt tube encloses the belts and drive components,
protecting them from the airstream. A belt tube is an
optional accessory on Model QCLB and standard on
Models QCLBR and QCLBSH
Inlet and Outlet Screens
Safety screening can be provided for installation in
the fan inlet or fan outlet.
Discharge Cap
Inlet and Outlet Screens
Belt Tube
Discharge caps are provided as a standard accessory
on vertical roof mounted configurations. Discharge
caps feature butterfly type dampers that seal out
weather when the fan is shut off. Butterfly dampers
on Models QCLB and QCLBR open with airflow (see
table 3 on page 10 for minimum flow rates required
to open damper blades). Discharge caps on Model
QCLBSH meet UL 793 requirements, providing a
fusible link and spring assembly that forces the
discharge butterfly dampers open when the fuse
melts at 165°F. Discharge caps on QCLBSH meet
snow load tests set forth by UL, IRI and SBCCI.
Companion Flanges
Flanges are rolled angle rings, punched to match the
fan’s inlet or outlet flange.
Discharge Cap
Weather Cover
For outdoor installations, the weather cover completely
encloses the motor and V-belt drive from the
elements and is provided with slots for ventilation.
Weather covers are available for either horizontal or
vertical flow fans. Standard accessory on vertical roof
mounted configuration.
Curb Cap
Attached to the fan’s flange for curb mounting.
Standard accessory on vertical roof mounted
configuration.
Companion Flanges
Weather Cover
Shaft Seal
To limit the air entering the inner cylinder and avoid
contact of airstream contaminants with the bearings
and V-belt drive. Consists of a Teflon wear pad/plate
and a rubber checkseal at the wheel end of the inner
cylinder. Please note that a shaft seal does not make
the inner cylinder gas tight.
Copper Lube Lines
Copper lube lines are available in place of nylon
lube lines on Model QCLB. Lube lines with grease
fittings are extended to the outside of the fan
housing. Copper lube lines are standard construction
on Models QCLBR and QCLBSH.
Curb Cap
8
Twin City Fan Bulletin 1070
ProductAccessories
Spark Resistant Construction
Various grades of spark resistance are as dictated
by AMCA: Types A, B and C. Spark resistant
construction requires the addition of a sealed belt
tube.
UL/CUL Listing
Model QCLB is available with the UL/CUL 705 listing
for electrical when supplied with specific motors. The
model QCLBR is provided standard with the UL/CUL
762 listing for the exhaust of grease-laden air and the
model QCLBSH is provided standard with the UL/CUL
listing for Smoke Control Systems.
Spring Isolator
Vibration Isolation
Rubber Isolator
Spring or rubber-in-shear isolators as an option.
Spring isolators can be provided for floor mount or
ceiling hung orientation.
Thrust Restraints
Cable-type thrust restraints are used in conjunction
with isolators on horizontal ceiling hung fans to
minimize movement when the fan thrust ratio exceeds
the weight ratio.
Disconnect Switch
A NEMA 1, 3R, 4 or 7/9 safety disconnect switch is
available for positive electrical shutoff of the fan and
the protection of service personnel. Disconnects are
available shipped loose for field mounting and wiring
or factory mounted and wired, excluding NEMA 7/9
disconnects.
NEMA 3R & NEMA 4 Switch
Piezometer Rings
Includes piezometer ring mounted at the throat of
the inlet funnel and a static pressure tap mounted
on the face of the inlet funnel. Pressure tranducers
and pressure indicators are also available separately.
Piezometer rings are available on Model QCLB fans
only.
Grease Box & Drain Connection
A drain connection extending from the exterior of the
housing and into a grease box mounted to the fan
curb cap is offered to keep grease from discharging
onto the roof. Available on Model QCLBR with
Vertical Roof Mount (VRM) discharge only. The grease
box is shipped loose for field mounting on all other
discharge configurations.
Piezometer Rings
Grease Box
Roof Curbs
Standard roof curbs are 12" high and are constructed
of heavy duty galvanized steel and include 1.5” thick
insulation. Curbs for Model QCLB are non-vented
and curbs for Models QCLBR and QCLBSH include
ventilation slots. Contact factory for other roof curb
options.
www.tcf.com
Roof Curbs
9
EngineeringData
Table 1. Maximum RPM, Wheel Weights,
and WR2 (moment of inertia in lb-ft2)
FAN SIZE
90
122
135
150
165
182
200
222
245
270
300
330
365
402
445
490
542
600
MAX.
RPM
3156
2577
2343
2118
1933
1737
1578
1432
1289
1171
1059
960
869
789
713
644
586
530
LEVEL 1
WEIGHT
LB.
8
11
13
16
22
26
29
34
41
49
67
78
119
142
172
270
336
405
Table 3. Minimum CFM
Required to Open
Discharge Cap
FAN
SIZE
90
122
135
150
165
182
200
222
245
270
300
330
365
402
445
490
542
600
WR2
LB-FT2
0.99
2.03
2.98
4.34
6.9
10
15
20
29
42
70
100
190
275
407
784
1183
1743
MAX.
RPM
4225
3450
3137
2836
2588
2326
2113
1917
1725
1568
1418
1286
1163
1056
954
863
784
709
LEVEL 2
WEIGHT
LB.
9
12
15
18
31
37
46
59
70
84
115
134
196
234
282
463
577
695
Table 2. Bare Fan Weights (lb)
(without motor and drive)
FAN
SIZE
90
122
135
150
165
182
200
222
245
270
300
330
365
402
445
490
542
600
CFM
515
770
935
1051
1707
2532
3527
3527
4693
6574
7605
8712
11158
15891
15891
20904
26613
34100
WR2
LB-FT2
1.05
2.15
3.50
5.1
9.9
14
23
34
50
72
121
171
313
452
668
1346
2030
2992
LEVEL 1
LEVEL 2
74
99
114
136
161
180
221
248
316
369
554
648
810
1022
1238
1481
2010
2434
83
111
129
154
187
221
262
310
395
463
585
756
952
1202
1457
1884
2305
2859
Table 4. Temperature and Altitude Density Ratios
AIR
TEMP
°F
–50
0
70
100
150
200
10
0
1000
2000
29.92
1.293
1.152
1.000
0.946
0.869
0.803
28.86
1.247
1.111
0.964
0.912
0.838
0.774
27.82
1.201
1.071
0.930
0.880
0.808
0.747
ALTITUDE IN FEET ABOVE SEA LEVEL
3000
4000
5000
6000
7000
8000
BAROMETRIC PRESSURE IN INCHES OF MERCURY
26.82
25.84
24.90
23.98
23.09
22.22
1.159
1.116
1.076
1.036
0.997
0.960
1.032
0.995
0.959
0.923
0.889
0.856
0.896
0.864
0.832
0.801
0.772
0.743
0.848
0.818
0.787
0.758
0.730
0.703
0.770
0.751
0.723
0.696
0.671
0.646
0.720
0.694
0.668
0.643
0.620
0.596
Twin City Fan Bulletin 1070
9000
10000
15000
21.39
0.924
0.824
0.714
0.676
0.620
0.573
20.58
0.889
0.792
0.688
0.651
0.598
0.552
16.89
0.729
0.650
0.564
0.534
0.490
0.453
CFM
OV
650
800
950
1100
1250
1400
1550
1700
1850
2000
2150
2300
2450
2600
2750
2900
631
777
922
1068
1214
1359
1505
1650
1796
1942
2087
2233
2379
2524
2670
2816
Wheel Dia.: 12.25"
Outlet Dia.: 13.69" 0.25˝ SP
RPM BHP
1124 0.05
1274 0.06
1445 0.09
1623 0.12
1804 0.16
1989 0.21
2176 0.27
2366 0.34
2556 0.43
2748 0.52
2941 0.64
3135 0.76
3329 0.91
3524 1.07
3720 1.26
3915 1.46
MAXIMUM RPM:
Level 1 — 3156
122 QCLB
CFM
OV
1000
1220
1440
1660
1880
2100
2320
2540
2760
2980
3200
3420
3640
3860
4080
4300
649
792
935
1078
1221
1364
1506
1649
1792
1935
2078
2221
2364
2506
2649
2792
0.25˝ SP
RPM BHP
930
0.07
1053 0.10
1190 0.14
1332 0.19
1477 0.24
1625 0.32
1775 0.41
1926 0.51
2078 0.63
2231 0.77
2385 0.94
2540 1.12
2695 1.33
2851 1.57
3007 1.83
3163 2.12
MAXIMUM RPM:
OV
1200
1460
1720
1980
2240
2500
2760
3020
3280
3540
3800
4060
4320
4580
4840
5100
642
781
920
1059
1198
1337
1476
1615
1754
1893
2032
2171
2310
2449
2588
2727
0.25˝ SP
RPM BHP
842
0.09
950
0.12
1071 0.16
1197 0.22
1326 0.29
1456 0.37
1589 0.47
1723 0.59
1858 0.73
1994 0.89
2131 1.08
2268 1.29
2406 1.53
2544 1.79
2682 2.09
2821 2.42
MAXIMUM RPM:
0.75" SP
RPM BHP
1634 0.13
1699 0.16
1810 0.19
1925 0.23
2063 0.28
2223 0.34
2392 0.41
2567 0.50
2745 0.59
2925 0.70
3107 0.83
3291 0.97
3476 1.13
3663 1.30
3852 1.50
0.5" SP
RPM BHP
1140 0.13
1230 0.17
1328 0.21
1450 0.26
1584 0.33
1724 0.41
1866 0.51
2010 0.62
2157 0.76
2305 0.91
2454 1.08
2605 1.27
2756 1.49
2909 1.74
3062 2.01
3216 2.31
1.5" SP
RPM BHP
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
1900
1979
2092
2207
2339
2493
2660
2832
3008
3186
3366
3547
3731
3916
2319
2383
2488
2602
2718
2851
3002
3165
3335
3509
3685
3863
2644
2678
2740
2840
2954
3068
3189
3327
3481
3645
3814
3986
2963
3000
3065
3164
3277
3392
3508
3638
3784
3942
3256
3296
3367
3467
3581
3695
3810
3936
3497
3528
3575
3652
3755
3869
3984
0.21
0.25
0.30
0.35
0.41
0.48
0.57
0.68
0.80
0.93
1.08
1.24
1.42
1.62
1" SP
RPM BHP
1526 0.28
1556 0.32
1622 0.38
1713 0.45
1805 0.52
1911 0.61
2034 0.72
2167 0.86
2304 1.01
2445 1.18
2587 1.37
2730 1.58
2875 1.82
3021 2.08
3169 2.37
3318 2.69
0.5" SP
RPM BHP
1034 0.16
1113 0.20
1199 0.25
1305 0.31
1424 0.39
1547 0.48
1673 0.60
1801 0.73
1931 0.88
2062 1.05
2194 1.25
2328 1.47
2462 1.72
2597 2.00
2733 2.31
2869 2.65
Level 1 — 2343
0.75" SP
RPM BHP
1215 0.24
1264 0.29
1342 0.35
1424 0.41
1520 0.50
1632 0.60
1752 0.72
1875 0.86
2001 1.03
2128 1.21
2256 1.42
2386 1.65
2517 1.91
2650 2.20
2783 2.52
2917 2.88
1" SP
RPM BHP
1387 0.34
1412 0.39
1469 0.45
1548 0.53
1629 0.62
1721 0.72
1828 0.85
1945 1.00
2066 1.17
2191 1.37
2316 1.59
2443 1.83
2572 2.11
2701 2.41
2832 2.74
2964 3.11
Level 2 — 3137
0.53
0.59
0.66
0.74
0.84
0.94
1.04
1.17
1.32
1.49
1.68
1.89
0.76
0.84
0.92
1.02
1.14
1.26
1.39
1.54
1.72
1.91
1.03
1.12
1.22
1.35
1.49
1.63
1.79
1.96
1.23
1.33
1.44
1.56
1.71
1.88
2.05
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
1869
1896
1950
2034
2126
2218
2323
2444
2574
2709
2847
2988
3130
3272
3417
2161
2189
2239
2320
2411
2502
2598
2707
2829
2959
3094
3231
3371
2421
2451
2503
2582
2673
2764
2857
2959
3074
3199
3330
2660
2692
2748
2828
2919
3010
3102
3200
3311
3431
2856
2882
2918
2979
3061
3152
3244
3335
3432
0.80
0.89
0.99
1.11
1.25
1.40
1.56
1.74
1.96
2.20
2.48
2.78
3.11
1.15
1.26
1.38
1.53
1.70
1.88
2.07
2.29
2.54
2.82
3.13
MAXIMUM MOTOR FRAME SIZE:
4.5" SP
RPM BHP
3750
3786
3840
3925
3963
3992
1.55
1.67
1.79
1.95
Level
1.54
1.68
1.83
2.01
2.22
2.43
2.66
2.90
3.19
3.50
1.84
1.99
2.15
2.34
2.55
2.79
3.04
3.31
3.59
4.5" SP
RPM BHP
3062
3091
3134
3201
3284
3375
3236
3260
3291
3341
3414
2.32
2.49
2.68
2.90
3.15
3.43
Outlet Area: 1.87 ft2 Fan Efficiency Grade: FEG67
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
1698
1721
1765
1838
1920
2001
2092
2196
2310
2429
2551
2675
2801
2928
3055
1963
1986
2028
2096
2177
2258
2341
2435
2541
2655
2773
2895
3018
2198
2224
2266
2334
2413
2495
2576
2664
2763
2872
2987
3105
2415
2442
2487
2555
2634
2716
2797
2882
2977
3081
2595
2616
2646
2695
2765
2845
2926
3007
3091
2781
2805
2839
2894
2966
3046
3128
1.37
1.50
1.64
1.82
2.02
2.23
2.45
2.70
2.98
3.30
3.66
4.06
MAXIMUM MOTOR FRAME SIZE:
2.66
2.85
3.05
3.27
3.53
Level 2 — 184T
1.5" SP
RPM BHP
0.96
1.06
1.18
1.32
1.48
1.65
1.84
2.05
2.29
2.58
2.89
3.24
3.62
— 182T
4" SP
RPM BHP
Level 1 — 145T
Max. BHP = 0.144 (RPM ÷ 1000)3
Tip Speed FPM = 3.23 x RPM
0.62
0.69
0.78
0.89
1.02
1.15
1.30
1.48
1.69
1.93
2.20
2.50
2.82
3.18
3.57
1.78
1.90
Outlet Area: 1.54 ft2 Fan Efficiency Grade: FEG71
1.5" SP
RPM BHP
0.51
0.58
0.66
0.75
0.86
0.97
1.10
1.26
1.45
1.66
1.89
2.15
2.44
2.74
3.08
4" SP
RPM BHP
Level 1 — 145T
Max. BHP = 0.089 (RPM ÷ 1000)3
Tip Speed FPM = 2.93 x RPM
Level 2 — 3450
Wheel Dia.: 16.50"
Outlet Dia.: 18.50" 0.38
0.43
0.50
0.57
0.65
0.74
0.85
0.98
1.12
1.28
1.46
1.66
MAXIMUM MOTOR FRAME SIZE:
Level 2 — 4225
0.75" SP
RPM BHP
1338 0.20
1395 0.24
1484 0.29
1577 0.35
1688 0.42
1816 0.51
1951 0.62
2091 0.74
2233 0.88
2376 1.04
2521 1.22
2668 1.43
2816 1.65
2966 1.91
3116 2.19
3267 2.50
Outlet Area: 1.03 ft2 Fan Efficiency Grade: FEG75
1" SP
RPM BHP
Wheel Dia.: 15.00"
Outlet Dia.: 16.75" Level 1 — 2577
135 QCLB
CFM
0.5" SP
RPM BHP
1385 0.09
1496 0.11
1617 0.14
1767 0.17
1935 0.22
2110 0.28
2288 0.34
2469 0.42
2652 0.51
2838 0.61
3025 0.73
3214 0.87
3404 1.02
3594 1.19
3786 1.38
3979 1.59
Max. BHP = 0.033 (RPM ÷ 1000)3
Tip Speed FPM = 2.40 x RPM
PerformanceData
90 QCLB
1.85
2.00
2.18
2.39
2.62
2.88
3.14
3.42
3.74
4.10
2.21
2.38
2.57
2.78
3.03
3.31
3.60
3.90
4.23
Level 1 — 145T
2.78
2.98
3.20
3.45
3.74
4.06
4.40
4.5" SP
RPM BHP
2959
2985
3025
3086
3.41
3.64
3.89
4.19
Level 2 — 184T
NOTES:
1. Performance certified is for installation Type B: Free inlet, ducted outlet.
2. Power rating (BHP) does not include transmission losses.
3. Performance ratings do not include the effects of appurtenances (accessories).
www.tcf.com
11
PerformanceData
150 QCLB
CFM
OV
1500
1840
2180
2520
2860
3200
3540
3880
4220
4560
4900
5240
5580
5920
6260
6600
667
818
969
1120
1271
1422
1573
1724
1876
2027
2178
2329
2480
2631
2782
2933
0.25˝ SP
RPM BHP
756
0.10
855
0.14
965
0.19
1081 0.25
1200 0.33
1322 0.43
1446 0.55
1571 0.69
1697 0.86
1824 1.05
1952 1.27
2080 1.53
2209 1.82
2338 2.14
2467 2.50
2596 2.90
MAXIMUM RPM:
OV
1800
2200
2600
3000
3400
3800
4200
4600
5000
5400
5800
6200
6600
7000
7400
7800
662
809
956
1103
1250
1397
1544
1691
1838
1985
2132
2279
2426
2574
2721
2868
0.25˝ SP
RPM BHP
689
0.12
778
0.16
876
0.22
979
0.30
1086 0.39
1195 0.50
1305 0.64
1417 0.80
1529 0.99
1643 1.22
1757 1.47
1871 1.76
1986 2.09
2101 2.46
2217 2.87
2333 3.33
MAXIMUM RPM:
182 QCLB
OV
2200
2675
3150
3625
4100
4575
5050
5525
6000
6475
6950
7425
7900
8375
8850
9325
659
801
943
1085
1228
1370
1512
1654
1796
1939
2081
2223
2365
2507
2650
2792
0.25˝ SP
RPM BHP
615
0.14
691
0.19
775
0.26
864
0.35
955
0.45
1048 0.58
1143 0.74
1239 0.92
1336 1.14
1434 1.39
1532 1.67
1630 1.99
1729 2.36
1829 2.77
1928 3.23
2028 3.74
MAXIMUM RPM:
0.75" SP
RPM BHP
1084 0.28
1134 0.34
1205 0.41
1288 0.49
1382 0.59
1485 0.71
1594 0.86
1706 1.02
1822 1.21
1940 1.43
2060 1.68
2181 1.96
2303 2.27
2427 2.62
2551 3.00
2677 3.43
Max. BHP = 0.232 (RPM ÷ 1000)3
Tip Speed FPM = 3.57 x RPM
1" SP
RPM BHP
1235 0.40
1265 0.46
1320 0.53
1392 0.63
1474 0.74
1566 0.87
1667 1.02
1773 1.20
1884 1.40
1997 1.63
2113 1.89
2231 2.18
2351 2.50
2472 2.87
2594 3.26
2717 3.70
0.5" SP
RPM BHP
845
0.22
909
0.28
986
0.34
1074 0.43
1170 0.54
1270 0.67
1374 0.82
1480 1.00
1587 1.20
1696 1.44
1807 1.71
1918 2.01
2030 2.36
2143 2.74
2256 3.17
2370 3.64
0.75" SP
RPM BHP
989
0.34
1034 0.40
1096 0.48
1170 0.58
1254 0.70
1345 0.84
1442 1.00
1542 1.20
1645 1.42
1750 1.67
1857 1.95
1965 2.27
2074 2.63
2184 3.03
2295 3.47
2407 3.95
Level 1 — 1737
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
4.5" SP
RPM BHP
1513
1540
1590
1655
1731
1815
1907
2007
2111
2219
2331
2445
2560
2678
2796
1749
1779
1827
1890
1963
2043
2131
2225
2325
2430
2538
2648
2761
1960
1994
2044
2105
2177
2256
2341
2432
2529
2631
2736
2155
2193
2244
2307
2378
2456
2540
2629
2724
2824
2313
2338
2380
2434
2497
2569
2647
2730
2818
2480
2513
2558
2614
2679
2752
2830
2621
2643
2681
2730
2788
1.14
1.26
1.40
1.57
1.76
1.97
2.21
2.48
2.78
3.12
3.49
3.89
4.34
1" SP
RPM BHP
1127 0.48
1153 0.55
1202 0.64
1265 0.74
1338 0.87
1420 1.02
1509 1.20
1604 1.40
1702 1.64
1803 1.90
1906 2.20
2011 2.53
2118 2.91
2226 3.32
2334 3.77
2444 4.28
2.19
2.38
2.60
2.85
3.13
3.43
3.77
4.14
4.55
5.00
2.63
2.83
3.06
3.32
3.61
3.94
4.30
4.69
5.11
Level 1 — 182T
3.30
3.55
3.82
4.12
4.46
4.84
5.25
3.80
4.06
4.34
4.66
5.01
Level 2 — 184T
Outlet Area: 2.72 ft2 Fan Efficiency Grade: FEG71
1.5" SP
RPM BHP
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
4.5" SP
RPM BHP
1381
1404
1447
1504
1572
1646
1728
1816
1908
2005
2103
2205
2308
2412
2518
1595
1621
1663
1718
1782
1853
1931
2014
2103
2195
2291
2389
2490
1787
1816
1859
1913
1976
2046
2121
2201
2287
2377
2470
2566
1964
1997
2041
2096
2158
2227
2301
2380
2464
2552
2110
2130
2166
2213
2268
2331
2400
2473
2551
2261
2288
2328
2377
2433
2497
2566
2391
2408
2440
2483
2534
0.87
0.98
1.10
1.25
1.42
1.62
1.85
2.10
2.39
2.72
3.08
3.48
3.92
4.40
4.93
1.36
1.50
1.67
1.86
2.08
2.32
2.60
2.91
3.26
3.65
4.07
4.54
5.06
1.94
2.12
2.33
2.57
2.83
3.14
3.47
3.83
4.24
4.69
5.18
5.72
MAXIMUM MOTOR FRAME SIZE:
2.61
2.84
3.08
3.37
3.69
4.05
4.44
4.87
5.34
5.85
3.13
3.37
3.64
3.94
4.28
4.65
5.07
5.51
6.01
Level 1 — 182T
Max. BHP = 0.63 (RPM ÷ 1000)3
Tip Speed FPM = 4.35 x RPM
3.94
4.22
4.54
4.89
5.28
5.72
6.19
4.53
4.83
5.16
5.53
5.94
Level 2 — 213T
Outlet Area: 3.34 ft2 Fan Efficiency Grade: FEG71
1" SP
RPM BHP
1.5" SP
RPM BHP
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
4.5" SP
RPM BHP
1033
1074
1126
1188
1257
1332
1412
1496
1582
1670
1760
1851
1944
2037
2131
1258
1293
1340
1396
1459
1527
1601
1680
1762
1846
1932
2020
2110
2200
1433
1451
1486
1530
1584
1644
1708
1778
1853
1931
2012
2096
2181
2268
1604
1626
1660
1704
1756
1815
1878
1945
2017
2092
2171
2253
1761
1786
1822
1866
1918
1975
2037
2103
2173
2247
2324
1908
1937
1974
2019
2071
2128
2190
2255
2324
2029
2048
2079
2119
2165
2217
2275
2158
2183
2216
2257
2305
0.67
0.77
0.89
1.04
1.22
1.41
1.65
1.91
2.21
2.55
2.92
3.34
3.80
4.31
4.87
Level 2 — 2326
1.19
1.33
1.50
1.70
1.93
2.18
2.47
2.81
3.17
3.58
4.03
4.53
5.07
5.66
1.66
1.83
2.02
2.23
2.49
2.77
3.08
3.44
3.83
4.27
4.75
5.28
5.85
6.48
2.37
2.58
2.81
3.08
3.39
3.74
4.12
4.53
5.00
5.50
6.05
6.66
MAXIMUM MOTOR FRAME SIZE:
NOTES:
1. Performance certified is for installation Type B: Free inlet, ducted outlet.
2. Power rating (BHP) does not include transmission losses.
3. Performance ratings do not include the effects of appurtenances (accessories).
12
1.63
1.78
1.96
2.16
2.40
2.66
2.94
3.26
3.62
4.01
4.44
MAXIMUM MOTOR FRAME SIZE:
Level 2 — 2588
0.75" SP
RPM BHP
888
0.42
925
0.49
977
0.58
1039 0.70
1110 0.83
1187 0.99
1269 1.18
1355 1.39
1443 1.64
1533 1.93
1624 2.24
1717 2.60
1811 3.01
1906 3.45
2001 3.95
2097 4.49
0.73
0.82
0.92
1.05
1.20
1.37
1.57
1.79
2.04
2.32
2.64
2.99
3.37
3.80
4.25
Max. BHP = 0.367 (RPM ÷ 1000)3
Tip Speed FPM = 3.91 x RPM
Wheel Dia.: 22.25"
Outlet Dia.: 24.69" 0.5" SP
RPM BHP
756
0.27
810
0.33
876
0.41
951
0.51
1032 0.63
1118 0.78
1207 0.95
1297 1.15
1390 1.39
1483 1.65
1578 1.95
1674 2.30
1770 2.68
1867 3.11
1964 3.58
2062 4.11
Outlet Area: 2.25 ft2 Fan Efficiency Grade: FEG75
1.5" SP
RPM BHP
Level 2 — 2836
Wheel Dia.: 20.00"
Outlet Dia.: 22.31" Level 1 — 1933
CFM
0.5" SP
RPM BHP
926
0.18
998
0.23
1084 0.29
1184 0.36
1291 0.46
1404 0.57
1520 0.70
1639 0.85
1760 1.03
1882 1.24
2006 1.47
2131 1.74
2256 2.04
2382 2.37
2509 2.75
2637 3.16
Level 1 — 2118
165 QCLB
CFM
Wheel Dia.: 18.25"
Outlet Dia.: 20.25" Twin City Fan Bulletin 1070
3.18
3.44
3.72
4.05
4.42
4.82
5.26
5.75
6.28
6.86
7.49
4.09
4.41
4.74
5.13
5.56
6.03
6.55
7.10
7.71
Level 1 — 184T
4.79
5.11
5.48
5.88
6.33
6.82
7.37
5.86
6.25
6.66
7.12
7.64
Level 2 — 213T
CFM
OV
2700
3325
3950
4575
5200
5825
6450
7075
7700
8325
8950
9575
10200
10825
11450
12075
668
823
978
1132
1287
1442
1597
1751
1906
2061
2215
2370
2525
2679
2834
2989
0.25˝ SP
RPM BHP
562
0.18
638
0.25
722
0.34
810
0.46
901
0.61
993
0.79
1088 1.02
1183 1.28
1279 1.60
1375 1.96
1473 2.38
1570 2.86
1668 3.40
1766 4.01
1864 4.69
1962 5.45
MAXIMUM RPM:
OV
3300
4050
4800
5550
6300
7050
7800
8550
9300
10050
10800
11550
12300
13050
13800
14550
664
815
966
1117
1268
1419
1569
1720
1871
2022
2173
2324
2475
2626
2777
2928
0.25˝ SP
RPM BHP
511
0.22
580
0.30
654
0.41
732
0.55
811
0.73
892
0.95
974
1.21
1057 1.53
1141 1.90
1226 2.34
1311 2.83
1396 3.40
1482 4.04
1567 4.75
1653 5.56
1740 6.46
MAXIMUM RPM:
245 QCLB
OV
4000
4900
5800
6700
7600
8500
9400
10300
11200
12100
13000
13900
14800
15700
16600
17500
666
815
965
1115
1265
1414
1564
1714
1864
2013
2163
2313
2463
2612
2762
2912
0.25˝ SP
RPM BHP
455
0.26
515
0.36
579
0.48
647
0.65
716
0.86
787
1.11
858
1.41
931
1.78
1004 2.20
1078 2.70
1152 3.26
1226 3.91
1301 4.64
1376 5.46
1452 6.39
1527 7.41
MAXIMUM RPM:
0.75" SP
RPM BHP
808
0.51
846
0.61
899
0.74
963
0.89
1035 1.08
1114 1.31
1197 1.57
1283 1.89
1371 2.24
1460 2.65
1552 3.12
1644 3.64
1737 4.23
1831 4.88
1926 5.61
2021 6.42
Level 2
Max. BHP = 1.01 (RPM ÷ 1000)3
Tip Speed FPM = 4.79 x RPM
1" SP
RPM BHP
920
0.71
943
0.83
985
0.97
1040 1.14
1103 1.34
1174 1.59
1251 1.87
1332 2.20
1416 2.58
1503 3.01
1591 3.50
1681 4.05
1772 4.66
1864 5.34
1957 6.09
2051 6.92
0.5" SP
RPM BHP
623
0.40
672
0.50
734
0.64
803
0.80
876
1.01
952
1.25
1029 1.54
1109 1.89
1189 2.28
1270 2.74
1352 3.26
1435 3.85
1519 4.53
1603 5.28
1687 6.11
1772 7.03
0.75" SP
RPM BHP
737
0.62
763
0.73
811
0.89
871
1.07
937
1.30
1007 1.57
1081 1.89
1157 2.25
1234 2.67
1313 3.16
1393 3.71
1473 4.33
1555 5.03
1637 5.80
1719 6.65
1803 7.61
Level 2
Level 1 — 1289
0.75" SP
RPM BHP
662
0.75
683
0.89
723
1.06
774
1.28
831
1.55
892
1.86
956
2.22
1022 2.65
1090 3.14
1158 3.69
1228 4.33
1298 5.04
1369 5.84
1440 6.72
1512 7.70
1585 8.79
Level 2
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
4.5" SP
RPM BHP
1127
1148
1187
1237
1295
1360
1431
1507
1586
1669
1754
1841
1929
2019
2109
1303
1327
1364
1412
1469
1531
1598
1670
1747
1827
1909
1994
2080
1461
1488
1526
1574
1629
1690
1755
1825
1900
1978
2058
1607
1637
1677
1725
1780
1840
1904
1973
2046
1724
1744
1777
1819
1868
1923
1983
2047
1849
1875
1911
1955
2005
2061
1953
1971
2001
2040
2085
1.31
1.48
1.68
1.92
2.19
2.51
2.88
3.29
3.76
4.29
4.88
5.54
6.26
7.06
7.93
2.06
2.29
2.54
2.85
3.21
3.61
4.05
4.56
5.12
5.75
6.45
7.22
8.06
2.95
3.24
3.56
3.95
4.38
4.86
5.40
6.00
6.67
7.40
8.20
MAXIMUM MOTOR FRAME SIZE:
3.98
4.33
4.73
5.20
5.71
6.28
6.91
7.61
8.38
4.76
5.14
5.57
6.05
6.60
7.20
7.87
8.60
Level 1 — 184T
Max. BHP = 1.66 (RPM ÷ 1000)3
Tip Speed FPM = 5.28 x RPM
5.99
6.45
6.95
7.53
8.16
8.87
Outlet Area: 4.97 ft2 Fan Efficiency Grade: FEG71
1.5" SP
RPM BHP
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
856
888
937
996
1061
1131
1203
1278
1354
1432
1510
1590
1670
1751
1833
1045
1071
1113
1166
1227
1292
1361
1432
1506
1581
1657
1735
1813
1893
1194
1207
1231
1271
1322
1379
1442
1508
1577
1648
1722
1796
1873
1337
1351
1377
1417
1465
1521
1582
1647
1715
1785
1856
1468
1484
1512
1552
1601
1656
1716
1780
1847
1915
1590
1608
1639
1680
1729
1784
1844
1907
1692
1705
1726
1760
1803
1853
1907
1.00
1.16
1.36
1.61
1.90
2.25
2.64
3.09
3.59
4.17
4.81
5.54
6.33
7.22
8.19
1.79
2.01
2.29
2.62
3.01
3.44
3.94
4.50
5.13
5.82
6.59
7.45
8.38
9.42
2.50
2.76
3.05
3.41
3.83
4.31
4.85
5.45
6.13
6.87
7.70
8.59
9.59
3.57
3.89
4.27
4.72
5.22
5.80
6.45
7.17
7.97
8.84
9.78
MAXIMUM MOTOR FRAME SIZE:
— 1917
6.88
7.36
7.90
8.49
9.15
Level 2 — 215T
1" SP
RPM BHP
Wheel Dia.: 30.00"
Outlet Dia.: 33.13" 0.5" SP
RPM BHP
558
0.48
599
0.60
653
0.76
712
0.95
775
1.19
841
1.47
909
1.81
978
2.20
1048 2.66
1119 3.19
1190 3.78
1263 4.47
1335 5.22
1409 6.09
1482 7.03
1556 8.09
Outlet Area: 4.04 ft2 Fan Efficiency Grade: FEG71
1.5" SP
RPM BHP
— 2113
Wheel Dia.: 27.00"
Outlet Dia.: 30.06" Level 1 — 1432
CFM
0.5" SP
RPM BHP
689
0.33
744
0.42
810
0.53
886
0.66
968
0.84
1054 1.04
1142 1.29
1233 1.58
1325 1.91
1418 2.30
1512 2.74
1607 3.25
1703 3.81
1799 4.45
1895 5.15
1992 5.93
Level 1 — 1578
222 QCLB
CFM
Wheel Dia.: 24.50"
Outlet Dia.: 27.06" 4.80
5.20
5.66
6.20
6.82
7.50
8.26
9.10
10.02
11.01
6.20
6.68
7.23
7.87
8.59
9.39
10.27
11.22
Level 1 — 213T
Max. BHP = 2.82 (RPM ÷ 1000)3
Tip Speed FPM = 5.87 x RPM
7.24
7.76
8.32
8.98
9.73
10.57
11.47
4.5" SP
RPM BHP
1800 8.89
1815 9.48
1840 10.15
1877 10.92
Level 2 — 254T
Outlet Area: 6.01 ft2 Fan Efficiency Grade: FEG71
1" SP
RPM BHP
1.5" SP
RPM BHP
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
4.5" SP
RPM BHP
769
794
835
886
942
1002
1064
1129
1196
1263
1332
1401
1471
1542
1613
938
958
994
1039
1090
1147
1206
1267
1331
1396
1463
1530
1599
1668
1084
1102
1136
1178
1226
1280
1337
1397
1458
1522
1587
1653
1720
1202
1213
1233
1265
1306
1353
1405
1461
1520
1580
1642
1705
1319
1332
1353
1386
1427
1473
1524
1579
1637
1696
1429
1443
1466
1500
1541
1587
1638
1692
1521
1532
1547
1574
1609
1651
1697
1617
1629
1648
1677
1714
1.21
1.40
1.64
1.93
2.27
2.66
3.11
3.63
4.22
4.88
5.63
6.45
7.37
8.39
9.50
— 1725
2.17
2.43
2.76
3.15
3.59
4.10
4.68
5.32
6.04
6.84
7.73
8.71
9.79
10.98
3.35
3.69
4.11
4.60
5.15
5.78
6.47
7.26
8.11
9.07
10.11
11.25
12.49
4.34
4.73
5.16
5.67
6.27
6.94
7.69
8.52
9.45
10.46
11.55
12.74
MAXIMUM MOTOR FRAME SIZE:
PerformanceData
200 QCLB
5.83
6.31
6.84
7.46
8.18
8.97
9.84
10.81
11.89
13.04
7.54
8.10
8.72
9.46
10.30
11.22
12.24
13.34
Level 1 — 213T
8.80
9.43
10.07
10.83
11.69
12.67
13.72
10.80
11.50
12.27
13.14
14.15
Level 2 — 254T
NOTES:
1. Performance certified is for installation Type B: Free inlet, ducted outlet.
2. Power rating (BHP) does not include transmission losses.
3. Performance ratings do not include the effects of appurtenances (accessories).
www.tcf.com
13
PerformanceData
270 QCLB
CFM
OV
4800
5900
7000
8100
9200
10300
11400
12500
13600
14700
15800
16900
18000
19100
20200
21300
659
810
962
1113
1264
1415
1566
1717
1868
2019
2170
2321
2473
2624
2775
2926
0.25˝ SP
RPM BHP
412
0.31
466
0.43
526
0.59
588
0.79
651
1.04
716
1.35
782
1.72
849
2.17
916
2.69
984
3.30
1052 4.00
1120 4.79
1189 5.70
1258 6.72
1327 7.85
1396 9.11
MAXIMUM RPM:
OV
6000
7350
8700
10050
11400
12750
14100
15450
16800
18150
19500
20850
22200
23550
24900
26250
667
817
967
1117
1267
1417
1567
1717
1867
2017
2167
2317
2467
2617
2767
2917
0.25˝ SP
RPM BHP
377
0.39
427
0.54
481
0.74
537
0.99
595
1.31
654
1.69
714
2.16
774
2.72
835
3.37
897
4.13
959
5.01
1021 6.01
1083 7.13
1146 8.40
1208 9.80
1271 11.37
MAXIMUM RPM:
OV
7200
8800
10400
12000
13600
15200
16800
18400
20000
21600
23200
24800
26400
28000
29600
31200
661
808
955
1102
1249
1396
1543
1690
1837
1983
2130
2277
2424
2571
2718
2865
0.25˝ SP
RPM BHP
339
0.47
383
0.64
431
0.87
480
1.16
531
1.52
583
1.96
636
2.50
689
3.13
743
3.88
797
4.74
852
5.74
907
6.88
962
8.16
1017 9.59
1072 11.19
1128 12.98
MAXIMUM RPM:
0.75" SP
RPM BHP
602
0.91
620
1.07
657
1.28
703
1.55
756
1.87
812
2.26
871
2.71
931
3.22
993
3.82
1056 4.51
1120 5.29
1185 6.17
1250 7.15
1316 8.25
1382 9.46
1448 10.79
Level 2
Max. BHP = 4.54 (RPM ÷ 1000)3
Tip Speed FPM = 6.45 x RPM
0.5" SP
RPM BHP
460
0.72
495
0.91
540
1.14
590
1.44
643
1.80
698
2.23
755
2.75
812
3.35
871
4.06
930
4.86
990
5.79
1050 6.83
1111 8.01
1172 9.33
1233 10.78
1295 12.41
0.75" SP
RPM BHP
545
1.13
564
1.33
598
1.60
641
1.94
689
2.34
740
2.82
793
3.37
848
4.02
905
4.78
962
5.63
1020 6.60
1079 7.70
1138 8.92
1198 10.29
1258 11.80
1318 13.45
Level 2
1.5" SP
RPM BHP
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
4.5" SP
RPM BHP
699
722
759
805
857
912
970
1029
1090
1152
1215
1279
1343
1408
1474
853
871
904
945
992
1044
1099
1155
1214
1274
1335
1397
1460
1523
985
1002
1033
1071
1116
1166
1219
1274
1330
1388
1448
1509
1093
1103
1121
1151
1189
1232
1280
1332
1386
1441
1498
1556
1199
1211
1231
1261
1299
1341
1389
1439
1492
1547
1299
1312
1334
1365
1403
1446
1493
1543
1382
1393
1407
1432
1465
1503
1546
1470
1482
1499
1527
1561
1.47
1.69
1.98
2.33
2.75
3.23
3.79
4.42
5.14
5.96
6.87
7.90
9.02
10.28
11.67
Level 1 — 960
0.75" SP
RPM BHP
494
1.36
509
1.59
538
1.90
575
2.29
618
2.77
662
3.31
709
3.95
758
4.71
807
5.55
857
6.52
908
7.62
960
8.88
1012 10.27
1065 11.83
1118 13.55
1171 15.44
Level 2
2.63
2.94
3.35
3.81
4.35
4.98
5.69
6.48
7.37
8.36
9.45
10.66
11.99
13.44
4.05
4.46
4.98
5.57
6.25
7.03
7.90
8.86
9.90
11.06
12.35
13.76
7.06
7.64
8.30
9.05
9.94
10.89
11.99
13.17
14.48
15.91
9.12
9.81
10.59
11.49
12.52
13.66
14.91
16.28
Level 1 — 215T
Max. BHP = 7.54 (RPM ÷ 1000)3
Tip Speed FPM = 7.14 x RPM
10.64
11.43
12.21
13.15
14.22
15.39
16.70
13.08
13.96
14.88
15.99
17.22
Level 2 — 256T
Outlet Area: 9.00 ft2 Fan Efficiency Grade: FEG71
1" SP
RPM BHP
1.5" SP
RPM BHP
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
4.5" SP
RPM BHP
633
655
690
733
780
830
883
937
993
1049
1106
1164
1223
1282
1341
772
790
821
859
902
950
999
1051
1104
1159
1214
1271
1328
1385
892
909
937
973
1014
1060
1108
1158
1209
1262
1317
1372
989
999
1016
1044
1079
1119
1163
1210
1259
1309
1361
1415
1085
1096
1115
1144
1179
1218
1261
1308
1356
1406
1175
1188
1209
1238
1273
1312
1355
1401
1251
1260
1275
1298
1328
1364
1403
1330
1341
1358
1384
1415
1.81
2.10
2.46
2.91
3.42
4.02
4.72
5.51
6.42
7.43
8.56
9.83
11.26
12.82
14.52
3.25
3.64
4.15
4.74
5.41
6.20
7.06
8.06
9.16
10.39
11.74
13.26
14.91
16.70
5.01
5.53
6.16
6.91
7.75
8.72
9.79
10.99
12.29
13.73
15.35
17.08
6.49
7.08
7.72
8.51
9.43
10.45
11.60
12.87
14.28
15.80
17.48
19.34
MAXIMUM MOTOR FRAME SIZE:
— 1418
8.71
9.42
10.23
11.20
12.30
13.50
14.83
16.34
17.96
19.74
11.24
12.11
13.08
14.20
15.48
16.88
18.43
20.14
Level 1 — 215T
Max. BHP = 12.23 (RPM ÷ 1000)3
Tip Speed FPM = 7.87 x RPM
13.15
14.07
15.09
16.23
17.54
19.04
20.64
16.11
17.19
18.37
19.73
21.24
Level 2 — 256T
Outlet Area: 10.89 ft2 Fan Efficiency Grade: FEG71
1" SP
RPM BHP
1.5" SP
RPM BHP
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
4.5" SP
RPM BHP
573
591
621
658
699
743
789
837
886
935
986
1037
1088
1140
1192
699
714
739
772
810
851
894
939
986
1034
1083
1133
1183
1233
807
821
845
875
911
950
992
1036
1081
1127
1175
1223
1273
896
904
918
941
971
1005
1043
1084
1127
1171
1216
1263
983
992
1007
1031
1060
1094
1131
1171
1213
1257
1064
1074
1091
1115
1145
1179
1216
1255
1133
1141
1152
1171
1196
1226
1260
1204
1214
1227
1247
1274
2.18
2.51
2.93
3.44
4.03
4.73
5.53
6.45
7.48
8.62
9.94
11.40
12.99
14.77
16.70
— 1286
3.90
4.37
4.93
5.62
6.41
7.30
8.30
9.43
10.70
12.11
13.67
15.41
17.28
19.32
6.00
6.62
7.35
8.20
9.19
10.28
11.52
12.90
14.41
16.05
17.88
19.85
22.06
7.79
8.48
9.25
10.14
11.20
12.37
13.69
15.16
16.79
18.55
20.45
22.57
MAXIMUM MOTOR FRAME SIZE:
NOTES:
1. Performance certified is for installation Type B: Free inlet, ducted outlet.
2. Power rating (BHP) does not include transmission losses.
3. Performance ratings do not include the effects of appurtenances (accessories).
14
5.25
5.72
6.25
6.88
7.62
8.43
9.35
10.39
11.53
12.76
14.11
15.57
MAXIMUM MOTOR FRAME SIZE:
— 1568
Wheel Dia.: 40.25"
Outlet Dia.: 44.63" 0.5" SP
RPM BHP
416
0.87
446
1.08
485
1.36
529
1.70
575
2.11
624
2.62
674
3.21
724
3.89
776
4.70
828
5.62
881
6.68
934
7.87
987
9.19
1041 10.69
1095 12.35
1150 14.21
Outlet Area: 7.28 ft2 Fan Efficiency Grade: FEG71
1" SP
RPM BHP
Wheel Dia.: 36.50"
Outlet Dia.: 40.56" Level 1 — 1059
330
QCLB
CFM
0.5" SP
RPM BHP
506
0.58
544
0.73
592
0.91
647
1.15
705
1.44
766
1.79
828
2.20
891
2.68
955
3.24
1021 3.90
1086 4.62
1153 5.47
1220 6.42
1287 7.47
1355 8.65
1422 9.93
Level 1 — 1171
300 QCLB
CFM
Wheel Dia.: 33.00"
Outlet Dia.: 36.50" Twin City Fan Bulletin 1070
10.47
11.30
12.23
13.34
14.57
15.98
17.51
19.21
21.07
23.12
13.49
14.48
15.61
16.88
18.37
20.01
21.80
23.71
Level 1 — 254T
15.76
16.88
18.03
19.36
20.86
22.55
24.42
19.31
20.62
21.96
23.46
25.24
Level 2 — 284T
CFM
OV
9000
11000
13000
15000
17000
19000
21000
23000
25000
27000
29000
31000
33000
35000
37000
39000
675
825
975
1125
1275
1425
1575
1725
1875
2026
2176
2326
2476
2626
2776
2926
0.25˝ SP
RPM BHP
302
0.59
342
0.81
386
1.11
431
1.49
478
1.97
526
2.55
574
3.25
623
4.09
672
5.07
722
6.21
772
7.53
822
9.02
872 10.70
922 12.57
973 14.71
1023 12.03
MAXIMUM RPM:
OV
11000
13400
15800
18200
20600
23000
25400
27800
30200
32600
35000
37400
39800
42200
44600
47000
681
829
978
1126
1275
1423
1572
1720
1869
2017
2166
2314
2463
2611
2760
2908
0.25˝ SP
RPM BHP
275
0.71
311
0.99
351
1.35
392
1.81
434
2.38
477
3.08
520
3.92
564
4.92
608
6.08
653
7.45
698
9.01
743 10.79
788 12.78
833 15.02
879 17.56
924 20.32
MAXIMUM RPM:
OV
13000
16000
19000
22000
25000
28000
31000
34000
37000
40000
43000
46000
49000
52000
55000
58000
657
808
960
1111
1263
1414
1566
1717
1869
2020
2172
2323
2475
2626
2778
2929
0.25˝ SP
RPM BHP
244
0.84
276
1.15
312
1.59
350
2.15
389
2.86
428
3.71
468
4.75
509
6.01
549
7.44
590
9.14
632 11.13
673 13.33
715 15.88
756 18.67
798 21.85
840 25.38
MAXIMUM RPM:
0.75" SP
RPM BHP
433
1.66
450
1.97
478
2.37
512
2.87
550
3.48
591
4.19
634
5.02
679
6.01
725
7.15
771
8.43
818
9.89
865 11.51
913 13.35
961 15.38
1010 17.66
1059 20.17
Level 2
Max. BHP = 21.74 (RPM ÷ 1000)3
Tip Speed FPM = 8.70 x RPM
0.5" SP
RPM BHP
335
1.32
361
1.65
393
2.08
428
2.60
467
3.26
507
4.04
549
4.99
590
6.05
633
7.33
676
8.77
719 10.41
763 12.28
807 14.37
851 16.70
896 19.33
940 22.16
0.75" SP
RPM BHP
394
2.03
409
2.40
435
2.89
465
3.48
499
4.20
536
5.06
575
6.07
615
7.24
656
8.58
698 10.13
740 11.86
782 13.78
825 15.96
869 18.43
912 21.07
956 24.04
Level 2
1.5" SP
RPM BHP
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
4.5" SP
RPM BHP
504
523
552
585
622
662
705
749
794
840
886
933
980
1028
1076
614
630
656
686
720
757
796
838
882
926
971
1017
1063
1109
709
724
748
778
810
845
883
922
964
1007
1051
1096
1142
794
809
833
862
894
928
964
1003
1043
1085
1128
863
872
889
913
942
973
1006
1042
1080
1119
1160
935
945
963
988
1017
1048
1081
1117
1154
1002
1014
1034
1060
1089
1121
1154
1058
1066
1081
1103
1130
1159
2.68
3.10
3.65
4.30
5.06
5.96
7.01
8.21
9.57
11.10
12.80
14.72
16.82
19.18
21.74
Level 1 — 713
0.75" SP
RPM BHP
355
2.43
367
2.87
390
3.47
417
4.19
448
5.07
482
6.13
518
7.39
555
8.85
592 10.49
631 12.45
669 14.57
709 17.07
748 19.77
788 22.83
828 26.20
869 30.00
Level 2
10.37
11.36
12.55
13.92
15.45
17.14
18.99
21.08
23.34
25.85
28.59
12.77
13.85
15.10
16.52
18.17
19.95
21.89
24.08
26.49
29.07
31.91
3.26
3.79
4.44
5.23
6.15
7.22
8.46
9.87
11.51
13.33
15.33
17.60
20.15
22.94
25.98
Level 1 — 256T
3.90
4.54
5.37
6.32
7.44
8.77
10.32
12.07
14.14
16.44
18.98
21.85
25.01
28.47
32.35
— 954
20.63
22.13
23.87
25.88
28.07
30.52
33.10
23.62
25.18
26.98
29.03
31.36
33.83
Level 2 — 286T
Outlet Area: 16.16 ft2 Fan Efficiency Grade: FEG71
2" SP
RPM BHP
2.5" SP
RPM BHP
3" SP
RPM BHP
3.5" SP
RPM BHP
4" SP
RPM BHP
4.5" SP
RPM BHP
558
572
595
623
653
686
722
759
798
838
878
919
961
1002
644
8.91
657
9.85
679 11.01
706 12.37
735 13.87
766 15.53
800 17.44
835 19.50
873 21.89
911 24.43
951 27.33
991 30.43
1032 33.86
721 12.56
735 13.78
756 15.18
782 16.83
810 18.61
841 20.66
873 22.85
908 25.35
944 28.05
982 31.07
1021 34.37
784 15.49
792 16.78
806 18.20
828 19.95
854 21.92
882 24.06
912 26.42
944 29.01
977 31.78
1013 34.95
1050 38.37
849 19.99
858 21.51
874 23.26
896 25.28
922 27.58
950 30.08
980 32.82
1011 35.73
1044 38.93
910
920
938
961
987
1015
1045
961
968
981
1000
1024
1050
5.80
6.52
7.41
8.48
9.66
11.03
12.62
14.36
16.35
18.57
20.98
23.67
26.67
29.82
MAXIMUM MOTOR FRAME SIZE:
Level 1 — 256T
Max. BHP = 58.51 (RPM ÷ 1000)3
Tip Speed FPM = 10.61 x RPM
1" SP
RPM BHP
16.50
17.77
19.23
20.95
22.87
24.93
27.19
29.74
32.44
1.5" SP
RPM BHP
— 1056
412
427
451
478
508
541
576
612
650
688
726
765
804
843
883
7.34
8.14
9.09
10.23
11.46
12.87
14.47
16.20
18.18
20.36
22.75
25.39
28.29
Max. BHP = 35.16 (RPM ÷ 1000)3
Tip Speed FPM = 9.58 x RPM
1" SP
RPM BHP
458
476
502
532
565
601
639
678
719
760
801
843
886
929
972
4.77
5.38
6.14
6.99
8.00
9.15
10.44
11.92
13.62
15.46
17.50
19.79
22.26
24.94
MAXIMUM MOTOR FRAME SIZE:
— 1163
Wheel Dia.: 54.25"
Outlet Dia.: 60.19" 0.5" SP
RPM BHP
299
1.55
322
1.95
351
2.47
383
3.11
419
3.93
456
4.90
494
6.05
532
7.38
571
8.95
611 10.78
651 12.84
691 15.16
732 17.83
772 20.72
813 24.00
855 27.71
Outlet Area: 13.33 ft2 Fan Efficiency Grade: FEG71
1" SP
RPM BHP
Wheel Dia.: 49.00"
Outlet Dia.: 54.38" Level 1 — 789
445
QCLB
CFM
0.5" SP
RPM BHP
368
1.08
397
1.36
432
1.71
472
2.15
515
2.70
559
3.34
605
4.12
652
5.04
699
6.09
747
7.31
795
8.68
844 10.26
893 12.02
942 13.98
991 16.14
1041 18.58
Level 1 — 869
402
QCLB
CFM
Wheel Dia.: 44.50"
Outlet Dia.: 49.38" 1.5" SP
RPM BHP
503
515
536
561
589
619
652
686
722
759
796
834
872
910
7.01
7.90
9.01
10.30
11.80
13.49
15.46
17.63
20.13
22.93
25.97
29.39
33.09
37.10
2" SP
RPM BHP
581
592
612
636
663
692
723
755
790
826
862
899
937
10.81
11.96
13.40
15.05
16.94
19.05
21.41
23.96
26.96
30.26
33.80
37.72
42.07
2.5" SP
RPM BHP
650
663
682
706
732
760
790
822
855
890
926
15.25
16.80
18.54
20.60
22.85
25.36
28.15
31.26
34.63
38.42
42.58
MAXIMUM MOTOR FRAME SIZE:
24.98
26.73
28.83
31.21
33.83
36.68
39.81
28.62
30.48
32.61
35.01
37.78
40.73
Level 2 — 324T
Outlet Area: 19.80 ft2 Fan Efficiency Grade: FEG71
3" SP
RPM BHP
714
728
747
771
797
824
854
885
918
952
PerformanceData
365
QCLB
20.40
22.29
24.36
26.83
29.53
32.40
35.71
39.26
43.22
47.49
3.5" SP
RPM BHP
766
774
789
809
833
859
886
915
946
24.34
26.23
28.46
30.96
33.84
36.98
40.33
44.03
48.13
Level 1 — 284T
4" SP
RPM BHP
821
831
847
869
893
918
946
30.46
32.74
35.30
38.39
41.68
45.13
49.11
4.5" SP
RPM BHP
867
874
886
904
926
950
34.89
37.29
39.96
43.03
46.47
50.17
Level 2 — 326T
NOTES:
1. Performance certified is for installation Type B: Free inlet, ducted outlet.
2. Power rating (BHP) does not include transmission losses.
3. Performance ratings do not include the effects of appurtenances (accessories).
www.tcf.com
15
PerformanceData
490
QCLB
CFM
OV
16000
19600
23200
26800
30400
34000
37600
41200
44800
48400
52000
55600
59200
62800
66400
70000
667
817
967
1118
1268
1418
1568
1718
1868
2018
2168
2319
2469
2619
2769
2919
0.25˝ SP
RPM BHP
221
1.03
250
1.42
282
1.94
316
2.62
350
3.45
385
4.48
420
5.69
456
7.17
492
8.88
528 10.85
565 13.17
602 15.81
639 18.78
676 22.11
713 25.82
750 29.92
MAXIMUM RPM:
OV
19500
23900
28300
32700
37100
41500
45900
50300
54700
59100
63500
67900
72300
76700
81100
85500
664
814
964
1114
1264
1413
1563
1713
1863
2013
2163
2313
2463
2612
2762
2912
0.25˝ SP
RPM BHP
202
1.26
228
1.73
258
2.39
289
3.22
320
4.24
352
5.50
385
7.05
418
8.88
451 11.00
484 13.44
518 16.33
552 19.61
586 23.31
620 27.45
654 32.06
688 37.18
MAXIMUM RPM:
OV
24000
29400
34800
40200
45600
51000
56400
61800
67200
72600
78000
83400
88800
94200
99600
105000
668
818
968
1119
1269
1419
1569
1720
1870
2020
2170
2321
2471
2621
2771
2922
0.25˝ SP
RPM BHP
183
1.55
207
2.14
234
2.94
262
3.97
291
5.27
320
6.84
349
8.69
379 10.95
409 13.57
440 16.71
470 20.18
501 24.26
532 28.86
562 33.83
593 39.56
624 45.90
MAXIMUM RPM:
0.75" SP
RPM BHP
321
2.98
332
3.52
352
4.22
376
5.08
404
6.16
433
7.37
465
8.87
498 10.61
531 12.56
565 14.83
600 17.44
634 20.25
669 23.47
705 27.13
740 31.03
776 35.44
Level 2
Max. BHP = 96.93 (RPM ÷ 1000)3
Tip Speed FPM = 11.73 x RPM
1" SP
RPM BHP
373
386
407
431
457
486
517
550
583
616
650
684
719
754
789
0.5" SP
RPM BHP
247
2.34
266
2.93
289
3.68
316
4.65
345
5.84
375
7.26
406
8.96
437 10.91
469 13.22
501 15.84
534 18.90
567 22.34
600 26.18
633 30.45
666 35.18
700 40.55
0.75" SP
RPM BHP
292
3.62
302
4.27
321
5.16
344
6.26
369
7.55
396
9.06
426 10.96
456 13.09
487 15.57
518 18.36
549 21.47
581 25.05
613 29.02
646 33.55
679 38.54
712 44.01
Level 2
Level 1 — 530
0.75" SP
RPM BHP
264
4.44
274
5.28
291
6.36
311
7.65
334
9.25
359 11.16
386 13.48
413 16.07
441 19.12
470 22.68
498 26.50
527 30.92
557 36.01
586 41.42
616 47.60
646 54.38
Level 2
455
465
483
506
530
557
585
616
647
680
713
746
780
814
1.5" SP
RPM BHP
5.82
6.78
7.96
9.36
11.05
13.01
15.23
17.87
20.79
24.15
27.86
32.09
36.74
41.83
47.37
414
424
441
461
484
509
535
563
592
622
653
683
714
746
13.18
14.59
16.27
18.22
20.48
22.93
25.68
28.80
32.35
36.13
40.33
44.99
49.99
588
598
615
636
659
683
710
738
767
798
829
861
10.44
11.76
13.38
15.24
17.45
19.99
22.77
25.99
29.59
33.66
38.25
43.05
48.46
54.53
2" SP
RPM BHP
478
487
503
523
545
568
593
620
648
677
707
737
768
16.08
17.75
19.83
22.30
25.08
28.08
31.49
35.39
39.68
44.44
49.75
55.45
61.81
2.5" SP
RPM BHP
535
545
561
580
601
624
648
674
701
730
759
645
657
674
694
717
741
767
794
823
853
22.69
24.88
27.50
30.44
33.71
37.42
41.42
45.96
50.91
56.56
62.56
1" SP
RPM BHP
7.17
8.36
9.78
11.51
13.62
15.98
18.78
22.01
25.75
29.88
34.44
39.67
45.18
51.68
58.53
— 709
1.5" SP
RPM BHP
374
384
399
418
439
461
485
511
537
564
592
620
648
676
12.77
14.47
16.41
18.80
21.55
24.56
28.05
32.13
36.52
41.49
47.13
53.26
59.90
67.10
2" SP
RPM BHP
432
441
456
474
493
515
538
562
588
614
641
668
696
19.69
21.84
24.47
27.48
30.71
34.62
38.90
43.59
49.02
54.82
61.31
68.27
76.08
2.5" SP
RPM BHP
484
493
508
525
545
565
588
611
636
662
688
27.86
30.52
33.81
37.36
41.60
45.95
51.19
56.63
62.87
69.75
77.05
692
699
712
729
750
773
797
822
849
582
587
598
614
634
655
677
701
726
753
781
742
750
764
782
803
826
850
37.07
39.72
42.81
46.27
50.16
54.45
59.03
4.5" SP
RPM BHP
784
789
799
815
834
855
42.52
45.22
48.38
52.11
56.16
60.55
Level 2 — 364T
Outlet Area: 29.36 ft2 Fan Efficiency Grade: FEG71
3.5" SP
RPM BHP
28.00
30.23
32.93
36.05
39.76
43.69
47.91
52.67
57.80
63.62
69.95
630
636
648
665
684
705
728
751
776
36.11
38.79
42.02
45.82
49.93
54.49
59.64
64.91
70.85
4" SP
RPM BHP
675
683
696
714
733
754
776
Level 1 — 324T
45.12
48.44
52.20
56.75
61.44
66.66
72.26
4.5" SP
RPM BHP
713
718
728
743
760
780
51.73
55.09
59.07
63.65
68.47
74.02
Level 2 — 365T
Outlet Area: 35.94 ft2 Fan Efficiency Grade: FEG71
3" SP
RPM BHP
526
531
541
556
574
593
613
635
658
682
707
29.59
31.88
34.55
37.46
40.88
44.63
48.64
52.93
57.72
4" SP
RPM BHP
Level 1 — 286T
3" SP
RPM BHP
MAXIMUM MOTOR FRAME SIZE:
Twin City Fan Bulletin 1070
3.5" SP
RPM BHP
24.81
27.07
29.59
32.39
35.60
39.05
42.90
47.04
51.70
56.74
Max. BHP = 258.42 (RPM ÷ 1000)3
Tip Speed FPM = 14.27 x RPM
NOTES:
1. Performance certified is for installation Type B: Free inlet, ducted outlet.
2. Power rating (BHP) does not include transmission losses.
3. Performance ratings do not include the effects of appurtenances (accessories).
16
18.63
20.37
22.48
24.92
27.62
30.50
33.89
37.54
41.51
46.00
50.76
55.99
3" SP
RPM BHP
MAXIMUM MOTOR FRAME SIZE:
— 784
307
319
336
356
379
403
429
456
484
512
540
569
597
627
656
525
535
552
573
597
622
649
678
709
740
772
805
838
2.5" SP
RPM BHP
Outlet Area: 23.98 ft2 Fan Efficiency Grade: FEG71
Max. BHP = 156.05 (RPM ÷ 1000)3
Tip Speed FPM = 12.91 x RPM
1" SP
RPM BHP
339
352
371
393
418
445
473
503
533
564
595
627
659
691
723
8.58
9.61
10.91
12.52
14.25
16.29
18.53
21.19
24.05
27.38
31.00
34.92
39.32
44.09
2" SP
RPM BHP
MAXIMUM MOTOR FRAME SIZE:
— 863
Wheel Dia.: 73.00"
Outlet Dia.: 81.19" 0.5" SP
RPM BHP
224
2.89
241
3.60
262
4.53
287
5.76
313
7.21
340
8.94
368 11.03
397 13.53
426 16.38
455 19.62
484 23.27
514 27.53
544 32.28
574 37.57
605 43.63
635 50.08
1.5" SP
RPM BHP
4.80
5.55
6.53
7.67
8.98
10.55
12.38
14.55
16.94
19.59
22.61
25.93
29.69
33.81
38.30
Wheel Dia.: 66.00"
Outlet Dia.: 73.38" Level 1 — 586
600
QCLB
CFM
0.5" SP
RPM BHP
271
1.91
292
2.41
317
3.02
346
3.80
377
4.74
410
5.90
443
7.24
478
8.88
512 10.70
547 12.82
583 15.30
618 17.99
654 21.09
690 24.53
727 28.45
763 32.65
Level 1 — 644
542
QCLB
CFM
Wheel Dia.: 60.00"
Outlet Dia.: 66.25" 34.29
37.11
40.40
44.33
48.84
53.65
58.84
64.76
71.18
78.17
85.81
3.5" SP
RPM BHP
570
576
587
602
620
639
659
681
703
44.37
47.78
51.74
56.29
61.55
67.15
73.20
80.07
87.13
Level 1 — 326T
4" SP
RPM BHP
611
618
630
646
664
683
703
55.51
59.48
64.12
69.59
75.59
82.00
88.90
4.5" SP
RPM BHP
645
650
659
672
688
706
63.52
67.77
72.60
77.99
84.10
90.85
Level 2 — 405T
SEALED BELT GUARD
SEE NOTE 2
MOTOR
“FR”
MAX FRAME
SEALED BELT TUBE
(NH) NUMBER OF
“DH” DIA. HOLES
STRADDLING
A “CB” DIA. B.C.
ACCESS DOOR
SEE NOTE 3
SEE NOTE 2
MC
(MAX)
“BT” BELT
TUBE WIDTH
AIR
FLOW
D
1.50
M
“SD” SHAFT DIA.
(4) 0.50
MTG. HOLES
M
G
CC
O.D.
FLANGE
CA
INSIDE
DUCT
“TH” HSG. GA.
BF
2.00
DimensionalData
Horizontal & Vertical, Size 90 - 270
TA
SEE NOTE 4
45o
M
45o
M
DF
2.00
AIR
FLOW
AIR
FLOW
3.00
D
1.50
BL
1.63
(4) 0.50
SEE NOTE 6
N
TYP.
VIEW FROM
OUTLET END
VUI
VUO
DISCHARGE UP
FLOOR OR
CEILING MOUNT
VDO VDI
DISCHARGE DOWN
FLOOR OR
CEILING MOUNT
HCH
HORIZONTAL
CEILING HUNG
SIZE
BF
BL
BT
CA
CB
CC
D
DH
FR
G
M
MC
N
NH
90
122
135
150
165
182
200
222
245
270
14.31
17.13
19.00
22.75
25.25
28.06
30.88
33.00
36.50
40.31
21.00
24.25
26.13
27.88
30.13
32.50
34.88
37.88
40.88
44.25
4.06
5.06
5.69
6.31
6.31
6.31
7.06
7.81
8.69
9.56
13.75
16.63
18.56
20.25
22.25
24.69
27.06
30.06
33.13
36.50
15.25
18.50
20.38
22.13
24.38
26.75
29.13
32.13
35.13
38.50
16.00
19.88
21.75
23.50
25.56
28.00
30.31
33.38
36.38
39.75
10.69
11.81
12.50
13.13
13.88
16.75
17.56
18.63
21.69
22.88
0.44
0.56
0.56
0.56
0.56
0.69
0.81
0.81
0.81
0.81
184T
184T
184T
213T
213T
215T
254T
256T
256T
284T
19.13
21.38
22.75
23.94
25.56
27.25
28.88
31.00
33.13
35.50
8.06
9.19
9.88
10.50
11.25
12.13
12.94
14.00
15.06
16.25
22.88
24.25
26.88
27.75
28.75
29.88
34.88
36.25
37.75
39.38
7.44
8.56
9.25
9.88
10.63
11.50
12.38
13.44
14.44
15.69
8.00
8.00
8.00
8.00
8.00
12.00
12.00
12.00
12.00
12.00
SD
Level 1 Level 2
0.75
0.75
0.75
0.75
0.75
0.75
0.75
1.00
1.19
1.19
0.75
0.75
0.75
0.75
1.00
1.19
1.44
1.44
1.69
1.69
TA
18.44
21.25
23.13
26.88
29.38
32.19
35.00
37.13
40.63
44.44
TH
Level 1 Level 2
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
AC1002864
DIMENSIONS ARE SUBJECT TO CHANGE. CERTIFIED DRAWINGS AVAILABLE ON REQUEST.
NOTES:
1. Fan shown in horizontal shipping position, universal mounting brackets allow for other mounting configurations.
2. Sealed belt guard standard on QCLB, belt tube optional; OSHA type belt guard standard on QCLBR & QCLBSH with belt tube standard.
3. Access door is optional for QCLB & QCLBSH; (2) clean out doors 90˚ from motor and 180˚ apart standard on QCLBR.
4. Drain optional on QCLB & QCLBSH, standard on QCLBR
5. (2) Locking collars required on vertical applications.
6. For vertical applications remove support legs.
www.tcf.com
17
DimensionalData
Horizontal, Size 300 - 600
SEALED BELT GUARD
SEE NOTE 2
MOTOR “FR” MAX FRAME
ACCESS DOOR
SEALED BELT TUBE
SEE NOTE 3
SEE NOTE 2
MC
(MAX)
“BT” BELT
TUBE WIDTH
CC
(NH) NUMBER OF
“DH” DIA. HOLES
STRADDLING
A “CB” DIA. B.C.
“SD” SHAFT DIA.
D
M
CA
AIR
FLOW
(4) 0.50 MTG. HOLES
HORIZONTAL BASE
2.00
MOUNTING BRACKETS
M
G
“TH” HSG. GA.
BF
TA
SEE NOTE 4
A
BN
HORIZONTAL CEILING
HANGERS
BD
BB
(4) “BM” DIA. HOLES
C
G
HCH
HORIZONTAL CEILING HUNG
E
MOTOR LOCATION
(VIEWED FROM OUTLET)
SIZE
BB
BD
BF
BM
BN
BT
CA
CB
CC
D
DH
FR
G
M
MC
NH
300
330
365
402
445
490
542
600
1.50
1.50
2.00
2.00
2.00
2.00
2.00
2.50
46.94
51.50
56.06
62.25
69.06
76.13
85.00
93.63
45.94
50.50
56.06
62.25
69.06
76.13
85.00
93.63
0.81
0.81
0.81
0.81
0.81
0.81
1.06
1.06
43.75
47.88
52.56
57.56
63.38
69.44
76.56
85.38
10.69
11.81
12.94
14.44
15.94
17.69
19.56
21.81
40.56
44.63
49.38
54.38
60.19
66.25
73.38
81.19
43.13
47.25
52.00
57.50
63.25
69.38
77.00
84.75
44.88
49.00
53.75
59.75
65.50
73.63
79.75
87.50
24.50
27.50
29.19
31.13
34.63
37.81
42.00
44.75
0.81
0.81
0.81
0.81
0.81
0.81
0.81
0.81
286T
286T
324T
326T
364T
365T
404T
444T
38.81
41.75
45.06
48.94
53.00
57.38
62.75
68.25
17.94
19.38
21.06
23.00
25.00
27.19
29.88
32.63
41.31
43.25
49.81
52.19
55.00
58.00
71.50
78.44
16.00
16.00
16.00
16.00
16.00
24.00
24.00
24.00
SD
Level 1 Level 2
1.44
1.44
1.44
1.69
1.69
1.94
1.94
2.19
1.94
1.94
2.19
2.19
2.44
2.44
2.69
2.94
TA
50.06
54.63
60.19
66.38
73.19
80.25
89.13
97.75
TH
Level 1 Level 2
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
AC1002865
DIMENSIONS ARE SUBJECT TO CHANGE. CERTIFIED DRAWINGS AVAILABLE ON REQUEST.
NOTES:
1. Fan shown in horizontal shipping position, universal mounting brackets allow for other mounting configurations.
2. Sealed belt guard standard on QCLB, belt tube optional; OSHA type belt guard standard on QCLBR & QCLBSH with belt tube standard.
3. Access door is optional for QCLB & QCLBSH; (2) clean out doors 90˚ from motor and 180˚ apart standard on QCLBR.
4. Drain optional on QCLB & QCLBSH, standard on QCLBR.
18
Twin City Fan Bulletin 1070
AIR
FLOW
“SD” SHAFT DIA.
SEALED BELT TUBE
SEE NOTE 1
(4)
(NH) NUMBER OF
“DH” DIA. HOLES
STRADDLING A “CB” DIA. B.C.
BL
0.56 HOLES
SEALED BELT
GUARD
“BT” BELT TUBE WIDTH
SEE NOTE 1
TA
DimensionalData
Vertical, Size 300 - 600
MOTOR
“FR” MAX FRAME
1.50
ACCESS DOOR
2.00
SEE NOTE 2
4.00
“TH” HSG. GA.
CA
45o
TYP.
MC
(MAX)
CC
AIR
FLOW
AIR
FLOW
VUO
DISCHARGE UP
CEILING MOUNT
AIR
FLOW
AIR
FLOW
VDO
DISCHARGE DOWN
FLOOR MOUNT
VDI
DISCHARGE DOWN
CEILING MOUNT
SIZE
BL
BT
CA
CB
CC
DH
FR
MC
NH
300
330
365
402
445
490
542
600
49.88
54.00
58.75
64.75
70.50
78.63
84.75
92.50
10.69
11.81
12.94
14.44
15.94
17.69
19.56
21.81
40.56
44.63
49.38
54.38
60.19
66.25
73.38
81.19
43.13
47.25
52.00
57.50
63.25
69.38
77.00
84.75
44.88
49.00
53.75
59.75
65.50
73.63
79.75
87.50
0.81
0.81
0.81
0.81
0.81
0.81
0.81
0.81
286T
286T
324T
326T
364T
365T
404T
444T
41.31
43.25
49.81
52.19
55.00
57.94
71.50
78.44
16.00
16.00
16.00
16.00
16.00
24.00
24.00
24.00
VUI
DISCHARGE UP
FLOOR MOUNT
SD
Level 1
Level 2
1.44
1.44
1.44
1.69
1.69
1.94
1.94
2.19
1.94
1.94
2.19
2.19
2.44
2.44
2.69
2.94
TA
50.06
54.63
60.19
66.38
73.19
80.25
89.13
97.75
TH
Level 1
Level 2
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
AC1002866
DIMENSIONS ARE SUBJECT TO CHANGE. CERTIFIED DRAWINGS AVAILABLE ON REQUEST.
NOTES:
1. Sealed belt guard standard on QCLB, belt tube optional; OSHA type belt guard standard on QCLBR & QCLBSH with belt tube standard.
2. Access door is optional for QCLB & QCLBSH; (2) clean out doors 90˚ from motor and 180˚ apart standard on QCLBR.
3. (2) Locking collars required on vertical applications.
4. For vertical applications remove support legs
www.tcf.com
19
DimensionalData
Vertical Roof Mounted, Size 90 - 600
A
A
CG
DISCHARGE CAP
(NH) NUMBER OF
“DH” DIA. HOLES
STRADDLING A “CB” DIA. B.C.
SEE NOTE 1
CK
“BT” BELT TUBE WIDTH
“SD” SHAFT DIA.
WEATHER
COVER
STD.
CH
CA
INSIDE DUCT
TA
CC
O.D. FLANGE
1.00
MOTOR
“FR” MAX FRAME
NOTE 3
“TH” HSG. GA.
CJ
CURB CAP
SEE NOTE 1
CD
HSG O.D.
2.75
2.00
MC
(MAX)
ACCESS DOOR
CE
INSIDE SQUARE
SECTION A-A
WITHOUT DISCHARGE CAP
VIEWED FROM OUTLET
SEE NOTE 2
AIR
FLOW
SIZE
BT
CA
CB
CC
CD
CE
CG
CH
CJ
CK
DH
FR
MC
NH
90
122
135
150
165
182
200
222
245
270
300
330
365
402
445
490
542
600
4.06
5.06
5.69
6.31
6.31
6.31
7.06
7.81
8.69
9.56
10.69
11.81
12.94
14.44
15.94
17.69
19.56
21.81
13.75
16.63
18.56
20.25
22.25
24.69
27.06
30.06
33.13
36.50
40.56
44.63
49.38
54.38
60.19
66.25
73.38
81.19
15.25
18.50
20.38
22.13
24.38
26.75
29.13
32.13
35.13
38.50
43.13
47.25
52.00
57.50
63.25
69.38
77.00
84.75
16.00
19.88
21.75
23.50
25.56
28.00
30.31
33.38
36.38
39.75
44.88
49.00
53.75
59.75
65.50
73.63
79.75
87.50
14.00
16.88
18.81
20.50
22.56
24.88
27.25
30.25
33.31
36.69
40.81
44.88
49.63
54.63
60.44
66.50
76.63
81.44
17.06
20.44
22.75
27.38
30.88
34.88
37.38
40.38
43.38
46.75
51.00
55.13
59.88
64.88
69.63
78.00
88.75
98.00
21.06
23.25
25.31
28.63
28.63
32.00
35.00
38.13
41.38
44.38
50.63
52.50
56.63
63.25
69.25
80.00
86.50
100.00
40.69
45.13
48.25
53.63
56.44
61.31
64.75
68.63
74.13
79.94
89.31
95.38
102.44
112.38
123.19
129.25
148.00
162.50
5.00
5.63
5.88
6.00
6.31
6.63
6.75
6.75
7.00
7.25
7.75
7.75
7.75
8.00
8.50
9.00
9.25
9.75
16.25
17.25
18.25
19.75
19.75
21.50
23.00
24.75
26.50
28.25
31.50
33.00
34.50
38.00
41.50
40.00
49.63
55.00
0.44
0.56
0.56
0.56
0.56
0.69
0.81
0.81
0.81
0.81
0.81
0.81
0.81
0.81
0.81
0.81
0.81
0.81
184T
184T
184T
213T
213T
215T
254T
256T
256T
284T
286T
286T
324T
326T
364T
365T
404T
444T
22.88
24.25
26.94
27.75
28.75
29.94
34.88
36.25
37.75
39.38
41.31
43.25
49.81
52.19
55.00
57.94
71.50
78.44
8.00
8.00
8.00
8.00
8.00
12.00
12.00
12.00
12.00
12.00
16.00
16.00
16.00
16.00
16.00
24.00
24.00
24.00
SD
Level 1 Level 2
0.75
0.75
0.75
0.75
0.75
0.75
0.75
1.00
1.19
1.19
1.44
1.44
1.44
1.69
1.69
1.94
1.94
2.19
0.75
0.75
0.75
0.75
1.00
1.19
1.44
1.44
1.69
1.69
1.94
1.94
2.19
2.19
2.44
2.44
2.69
2.94
TA
19.44
22.25
24.13
27.88
30.38
33.19
35.00
37.13
40.63
44.44
50.06
54.63
60.19
66.38
73.19
80.25
89.13
97.75
TH
Level 1 Level 2
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
14.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
12.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
10.00
AS1002867
DIMENSIONS ARE SUBJECT TO CHANGE. CERTIFIED DRAWINGS AVAILABLE ON REQUEST.
NOTES:
1. Curb cap and discharge cap are options.
2. Access door is optional for QCLB & QCLBSH; (2) clean out doors 90˚ from motor and 180˚ apart standard on QCLBR.
3. (2) Locking collars required on vertical applications.
4. For vertical applications remove support legs.
20
Twin City Fan Bulletin 1070
Fans shall be Model QCLB (standard mixed flow) of the non-overloading design, as manufactured by Twin City
Fan & Blower, Minneapolis, Minnesota.
PERFORMANCE — Performance ratings shall conform to AMCA Standard 205 (fan efficiency grade), 211 (air
performance) and 311 (sound performance). Fans shall be tested in accordance with ANSI/AMCA Standard 210
(air performance) and 300 (sound performance) in an AMCA accredited laboratory. Fans shall be licensed to bear
the AMCA certified ratings seal for both sound and air, and fan efficiency grade (FEG). Sound certification shall
apply to both inlet and outlet sound power levels.
Fans shall be designed for maximum efficiency. Fans shall have a sharply rising pressure characteristic extending
through the operating range and continuing to rise well beyond the efficiency peak to assure quiet and stable
operation under all conditions. Horsepower characteristics shall be truly self-limiting and shall reach a peak in
the normal selection area.
Model QCLB shall be available UL 705 listed. Fans shall bear a permanently attached nameplate displaying model
and serial number of the unit for future identification.
TypicalSpecifications
QCLB
HOUSING — Housings shall be cylindrical and welded steel throughout. Inlets shall be fully streamlined. Housings shall be suitably braced to prevent vibration or pulsation. Totally enclosed belt guard shall enclose motor
sheave and V-belt drives. Punched inlet and outlet flanges shall be equipped for duct mounting. Extended lube
lines shall be provided for ease of lubrication. Model QCLB shall include bolted access door for inspection and
maintenance of wheel.
WHEEL — Fan wheels shall have die-formed single thickness blades designed for maximum efficiency, and quiet
and stable operation. Blades shall be continuously welded to the back plate and wheel cone. Wheels shall be
statically and dynamically balanced and the complete fan assembly including motor and drive shall be test balanced at or near the operating speed at the factory prior to shipment.
SHAFT — Shafts shall be AISI 1040 or 1045 hot rolled steel, accurately turned, ground, polished, and ring
gauged for accuracy. Shafts shall be sized for the first critical speed of at least 1.43 times the maximum speed.
BEARINGS — Bearings shall be heavy duty, grease lubricated, anti-friction ball or roller, self-aligning, pillow block
type and selected for a minimum L-10 life of 80,000 hours at the maximum fan RPM. Bearings shall be equipped
with extended lubrication lines with grease fittings outside of the fan housing.
DRIVE — Motor sheaves shall be cast iron, variable pitch on applications 10 HP and smaller, and fixed pitch
on 15 HP and larger.
FINISH AND COATING — The entire fan assembly, excluding the shaft, shall be thoroughly degreased and
deburred before application of a rust-preventative primer. After the fan is completely assembled, a finish coat
of paint shall be applied to the entire assembly. The fan shaft shall be coated with a petroleum-based rust
protectant. Aluminum components shall be unpainted.
FACTORY RUN TEST — All fans with motors and drives mounted by Twin City Fan & Blower shall be completely assembled and test run as a unit at the specified operating speed prior to shipment. Each wheel shall be
statically and dynamically balanced in accordance with ANSI/AMCA 204-96 “Balance Quality and Vibration Levels
for Fans” to Fan Application Category BV-3, Balance Quality Grade G6.3. Balance readings shall be taken by
electronic type equipment in the axial, vertical, and horizontal directions on each of the bearings. Records shall
be maintained and a written copy shall be available upon request.
GUARANTEE — The manufacturer shall guarantee the workmanship and materials for its QCLB Mixed Flow Fans
for at least one (1) year from startup or eighteen (18) months from shipment, whichever occurs first.
www.tcf.com
21
TypicalSpecifications
QCLBR
Fans shall be Model QCLBR (restaurant) of the non-overloading design, as manufactured by Twin City Fan &
Blower, Minneapolis, Minnesota.
PERFORMANCE — Performance ratings shall conform to AMCA Standard 205 (fan efficiency grade), 211 (air
performance) and 311 (sound performance). Fans shall be tested in accordance with ANSI/AMCA Standard 210
(air performance) and 300 (sound performance) in an AMCA accredited laboratory. Fans shall be licensed to bear
the AMCA certified ratings seal for both sound and air, and fan efficiency grade (FEG). Sound certification shall
apply to both inlet and outlet sound power levels.
Fans shall be designed for maximum efficiency. Fans shall have a sharply rising pressure characteristic extending
through the operating range and continuing to rise well beyond the efficiency peak to assure quiet and stable
operation under all conditions. Horsepower characteristics shall be truly self-limiting and shall reach a peak in
the normal selection area.
Model QCLBR shall be UL 762 listed for the exhaust of grease-laden air. Fans shall bear a permanently attached
nameplate displaying model and serial number of the unit for future identification.
HOUSING — Housings shall be cylindrical and welded steel throughout. Inlets shall be fully streamlined. Housings shall be suitably braced to prevent vibration or pulsation. Totally enclosed belt guard shall enclose motor
sheave and V-belt drives. Punched inlet and outlet flanges shall be equipped for duct mounting. Extended lube
lines shall be provided for ease of lubrication. Model QCLBR shall include a belt tube, 2 wheel cleanout doors
(located 180° apart) for inspection and maintenance of the wheel and a 2” drain.
WHEEL — Fan wheels shall have die-formed single thickness blades designed for maximum efficiency, and
quiet and stable operation. Blades shall be continuously welded to the back plate and wheel cone. Wheels shall
be statically and dynamically balanced and the complete fan assembly including motor and drive shall be test
balanced at or near the operating speed at the factory prior to shipment. Wheels on model QCLBR shall have
cooling fins to draw cool air over shaft and bearings.
SHAFT — Shafts shall be AISI 1040 or 1045 hot rolled steel, accurately turned, ground, polished, and ring gauged
for accuracy. Shafts shall be sized for the first critical speed of at least 1.43 times the maximum speed.
BEARINGS — Bearings shall be heavy duty, grease lubricated, anti-friction ball or roller, self-aligning, pillow block
type and selected for a minimum L-10 life of 80,000 hours at the maximum fan RPM. Bearings shall be equipped
with extended lubrication lines with grease fittings outside of the fan housing.
DRIVE — Motor sheaves shall be cast iron, variable pitch on applications 10 HP and smaller, and fixed pitch
on 15 HP and larger.
FINISH AND COATING — The entire fan assembly, excluding the shaft, shall be thoroughly degreased and
deburred before application of a rust-preventative primer. After the fan is completely assembled, a finish coat
of paint shall be applied to the entire assembly. The fan shaft shall be coated with a petroleum-based rust
protectant. Aluminum components shall be unpainted.
FACTORY RUN TEST — All fans with motors and drives mounted by Twin City Fan & Blower shall be completely assembled and test run as a unit at the specified operating speed prior to shipment. Each wheel shall be
statically and dynamically balanced in accordance with ANSI/AMCA 204-96 “Balance Quality and Vibration Levels
for Fans” to Fan Application Category BV-3, Balance Quality Grade G6.3. Balance readings shall be taken by
electronic type equipment in the axial, vertical, and horizontal directions on each of the bearings. Records shall
be maintained and a written copy shall be available upon request.
GUARANTEE — The manufacturer shall guarantee the workmanship and materials for its QCLBR Mixed Flow
Fans for at least one (1) year from startup or eighteen (18) months from shipment, whichever occurs first.
22
Twin City Fan Bulletin 1070
Fans shall be Model QCLBSH (smoke and heat) of the non-overloading design, as manufactured by Twin City
Fan & Blower, Minneapolis, Minnesota.
PERFORMANCE — Performance ratings shall conform to AMCA Standard 205 (fan efficiency grade), 211 (air
performance) and 311 (sound performance). Fans shall be tested in accordance with ANSI/AMCA Standard 210
(air performance) and 300 (sound performance) in an AMCA accredited laboratory. Fans shall be licensed to bear
the AMCA certified ratings seal for both sound and air, and fan efficiency grade (FEG). Sound certification shall
apply to both inlet and outlet sound power levels.
Fans shall be designed for maximum efficiency. Fans shall have a sharply rising pressure characteristic extending
through the operating range and continuing to rise well beyond the efficiency peak to assure quiet and stable
operation under all conditions. Horsepower characteristics shall be truly self-limiting and shall reach a peak in the
normal selection area.
Model QCLBSH shall be UL listed for Smoke Control Systems (500°F for 4 hours and 1000°F for 15 minutes).
Fans shall bear a permanently attached nameplate displaying model and serial number of the unit for future
identification.
TypicalSpecifications
QCLBSH
HOUSING — Housings shall be cylindrical and welded steel throughout. Inlets shall be fully streamlined. Housings shall be suitably braced to prevent vibration or pulsation. Totally enclosed belt guard shall enclose motor
sheave and V-belt drives. Punched inlet and outlet flanges shall be equipped for duct mounting. Extended lube
lines shall be
provided for ease of lubrication. Model QCLBSH shall include a belt tube for the protection of belts and drive
components from the airstream and bolted access door.
WHEEL — Fan wheels shall have die-formed single thickness blades designed for maximum efficiency, and
quiet and stable operation. Blades shall be continuously welded to the back plate and wheel cone. Wheels shall
be statically and dynamically balanced and the complete fan assembly including motor and drive shall be test
balanced at or near the operating speed at the factory prior to shipment. Wheels on model QCLBSH shall have
cooling fins to draw cool air over shaft and bearings.
SHAFT — Shafts shall be AISI 1040 or 1045 hot rolled steel, accurately turned, ground, polished, and ring
gauged for accuracy. Shafts shall be sized for the first critical speed of at least 1.43 times the maximum speed.
BEARINGS — Bearings shall be heavy duty, grease lubricated, anti-friction ball or roller, self-aligning, pillow
block type and selected for a minimum L-10 life of 80,000 hours at the maximum fan RPM. Bearings shall be
equipped with extended lubrication lines with grease fittings outside of the fan housing.
DRIVE — Motor sheaves shall be cast iron, variable pitch on applications 10 HP and smaller, and fixed pitch on
15 HP and larger. Model QCLBSH shall be equipped with a two-groove drive minimum.
FINISH AND COATING — The entire fan assembly, excluding the shaft, shall be thoroughly degreased and
deburred before application of a rust-preventative primer. After the fan is completely assembled, a finish coat
of paint shall be applied to the entire assembly. The fan shaft shall be coated with a petroleum-based rust
protectant. Aluminum components shall be unpainted.
FACTORY RUN TEST — All fans with motors and drives mounted by Twin City Fan & Blower shall be completely assembled and test run as a unit at the specified operating speed prior to shipment. Each wheel shall be
statically and dynamically balanced in accordance with ANSI/AMCA 204-96 “Balance Quality and Vibration Levels
for Fans” to Fan Application Category BV-3, Balance Quality Grade G6.3. Balance readings shall be taken by
electronic type equipment in the axial, vertical, and horizontal directions on each of the bearings. Records shall
be maintained and a written copy shall be available upon request.
GUARANTEE — The manufacturer shall guarantee the workmanship and materials for its QCLBSH Mixed Flow
Fans for at least one (1) year from startup or eighteen (18) months from shipment, whichever occurs first.
www.tcf.com
23
Industrial & Commercial Fans
Centrifugal Fans | Utility Sets | Plenum & Plug Fans | Inline Centrifugal Fans
Mixed Flow Fans | Tubeaxial & Vaneaxial Fans | Propeller Wall Fans | Propeller Roof Ventilators
Centrifugal Roof & Wall Exhausters | Ceiling Ventilators | Gravity Ventilators | Duct Blowers
Radial Bladed Fans | Radial Tip Fans | High Efficiency Industrial Fans | Pressure Blowers
Laboratory Exhaust Fans | Filtered Supply Fans | Mancoolers | Fiberglass Fans | Custom Fans
Twin city fan & blower | www.tcf.com
A Twin City Fan Company
.75MWG04/13
5959 Trenton Lane N | Minneapolis, MN 55442 | Phone: 763-551-7600 | Fax: 763-551-7601
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