AIR TECH SYSTEMS - LTG

AIR TECHSYSTEMS

Technical Documentation

LTG High Performance Tangential FansSeries TW

Impeller diameter from 125 to 200 mm

© LTG Aktiengesellschaft · Grenzstraße 7 · 70435 Stuttgart · Germany TW-eng-TP (10/14)Tel. +49 (711) 8201-0 · Fax +49 (711) 8201-696 · [email protected] · www.LTG.netPrinted in Germany · Former editions are invalid · Subject to technical modifications page 2 of 32

Content

LTG High Performance Tangential Fans-an advantage for best heating, cooling, drying, blasting 4. . . . . . . . .

Flow principle 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Advantages 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Application ofLTG High Performance Tangential Fans 4. . . . . . . . . . . . . . . . . . . . . . . . .

LTG High Performance Tangential FansSeries TW, impeller diameter 125 mm 5. . . . . . . . . . . . . . . . . . . . . . . . . .

Service conditions 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specification and design features 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Delivery range series TW, impeller diameter 125 mm 5. . . . . . . . . . . . . .


Position of the fan 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation and start up 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dimensions and performance data 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


Plug in slots 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LTG High Performance Tangential FansSeries TW, impeller diameter 125mm 8. . . . . . . . . . . . . . . . . . . . . . . . . .

Fan curves for nominal length 400 mm (15.75 inch) 8. . . . . . . . . . . . . . . .




Fan curves for nominal length 800 mm(31.50 inch) 10. . . . . . . . . . . . . . . .


Fan curves for nominal length 1000 mm (39.37 inch) 11. . . . . . . . . . . . . . .




Delivery Range Series TW, impeller diameter 150 mm 12. . . . . . . . . . . . .


Position of the fan 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .




Plug in slots 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LTG High Performance Tangential FansSeries TW, impeller diameter 150mm 15. . . . . . . . . . . . . . . . . . . . . . . . . .









Test conditions for the fan curves 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .








Delivery range series TW impeller diameter 200 mm 21. . . . . . . . . . . . . . .


Position of the fan 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .



LTG LTG High Performance Tangential FansSeries TW, impeller diameter 200 mm 23. . . . . . . . . . . . . . . . . . . . . . . . . .

Plug in slots 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .




Fan curves for nominal length 630 mm (24.8 inch) 25. . . . . . . . . . . . . . . . .


Fan curves for nominal length 800 mm (31.5 inch) 26. . . . . . . . . . . . . . . . .





LTG High Performance Tangential FansSeries TW, impeller diameter 150 and 200 mm 29. . . . . . . . . . . . . . . . . .

Acoustical data 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LTG High Performance Tangential FansSeries TW, impeller diameter 150mm and 200 mm 30. . . . . . . . . . . . . .

Accessories and special versions 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation, initiation 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Detachment 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LTG High Performance Tangential FansSeries TW, impeller diameter 125, 150 and 200 mm 31. . . . . . . . . . . . .

Selection 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


LTG High Performance Tangential Fans-an advantage for best heating, cooling, drying, blastingMany production processes require an extended linearand absolutely even distribution of air or other gases overa certain area.

The special design of, High Performance Tangential Fansprovides the optimum solution for these requirements.

The robust design and the use of high quality materials as-sure a long life expectancy.

The way these fans work, allowing even air distributionwithout additional baffles and vanes, and the space-savingdesign, make the use of tangential fans very economic.

Flow principleIn a tangential fan, the air is drawn in over the entire lengthof the fan impeller. Inside the impeller, the airflow is divertedand accelerated by the vortex created by the rotation of theimpeller.

The airstream then exists over the entire length of the im-peller on the discharge side. The vortex separatesthe intake and discharge side of the fan at the narrowestpoint betwen the impeller and the vortex builder. Togetherwith the fan scroll , the vortex directs the airflow. This res-ults in an almost uniform laminar airflow over the entire out-let width of the fan.

impeller vortex inducer fan scroll

Advantages Uniform, extended airflow over large areas. Space-saving installation due to 90_ and 180° airflow

pattern. Fan length can be matched exactly to machine width. Airflow conditions remain the same even for wider ma-

chines (simplified design and drafting in case of modularsystems).

Fans perform well in any mounting position. Drive can bemounted on right or left hand side.

Quiet operation due to optimised impeller and housingdesign.

Long live expectancy due to robust design and locationof bearings outside the hot air zone.

Explosion-proof models according to ATEX available.

Application ofLTG High Performance Tangential Fans Agricultural technology air-conditioning technology apparatus engineering automotive industry bakery technology biomedical industry building material industry chemical industry cleaning technology control panel technology dedusting technology drying technology electronic industry environmental simulations food industry furnace technology heat treatment technology mechanical and plant engineering medical technology packaging industry paper industry pharmaceutical industry power plant engineering process engineering railway technology refrigeration technology store design surface technology swimming pool technology textile machinery design tobacco industry transportation cooling wood industry ...


LTG High Performance Tangential FansSeries TW, impeller diameter 125 mm

The tangential fan series TW 125 is a rigid industrial gradefan with enhanced corrosion protection and high powerdensity.

LTG Tangential Fan type TWL 125(left hand drive)

Service conditionsgas temperatures:-13 F up to +248 F (-25 C bis max. +120 C)ambient temperatures:-13 F up to +104 F (-25 C bis max. +40 C)

Specification and design featuresTangential fan with shaft end on the drive side.

Rigid bolted, corrosion proof casing of marine grade alu-minium (DIN 1725). Impeller of galvanized steel.

The impeller is both sides bedded in self-aligning ball bear-ings. Bearing design life is 25 000 hours. The counter sidebearing is mounted vibration dampened. Both bearings arelifetime lubricated.

Recommended V-belt pulley:dw = 125 mm (4.9 in), profile SPA 12,5 mm (0.49 inch), DIN7753.The maximum rated power transmission for the pulley is 4kW (5.36 hp).Intake and discharge openings have sealing planes andplug in slots to connect exactly to ducts and appliances.The complete fan (including bearing clearance etc.) is bal-anced to grade Q 6.3 according to VDI 2060.

Length tolerances acc. to ISO 2768 vL.

Delivery range series TW, impeller diameter 125 mm

typemax.

medium temperatures impeller length casing impeller

TWR 125/400/NTWL 125/400/N

-25 C to +120 C(-13 F to +248 F)

400 mm(15.75 inch)

stainless steelaluminium galvanized steel

TWR 125/600/NTWL 125/600/N

600 mm(23.62 inch)

TWR 125/800/NTWL 125/800/N

800 mm(31.50 inch)

TWR 125/1000/NTWL 125/1000/N

1000 mm(39.37 inch)

TWR = right hand driveTWL = left hand drive



Position of the fanAny arrangement is possible.

Installation and start upFix the fans without any distortion to a plane base frame.For fixation of the fan use only the bolt holes provided in theside elements.

To connect to ducts and appliances plug in slots and seal-ing planes are provided over the whole fan width for the in-take and discharge openings.

Dimensions and performance data

Make sure to observe the applicable safety codes beforestarting the fans.

Check V-belt selection for higher temperature applications.

The fans are designed for continuous operation with con-stant load (operation mode S1 analogous to VDE 0530).For frequent start/stop operation please check with LTG.

Dimensions in mm

type/nominal length

dimensions airvolume

Vmax

pressureΔpfmax

speednmax

[rpm]

massesappr.

L[mm][inch]

A[mm][inch]

C[mm][inch]

[m3/h][cfm]

[Pa][” wg] [rpm]

[kg][lb]

TWR 125/400/NTWL 125/400/N

40015.75

50419.85

43617.16

39002296

5002.1

35158

17.6

TWR 125/600/NTWL 125/600/N

60023.62

70427.72

63625

48002825

2200.89

292010.5

23.15

TWR 125/800/NTWL 125/800/N

80031.5

90435.6

83632.9

37502207

1170.47

168013

28.66

TWR 125/1000/NTWL 125/1000/N

100039.37

110443.46

103640.78

38002237

800.32

139015,5

34.17



Plug in slots

A B

C

D

Plug in slots over the full fan width

C

D

B

A


LTG High Performance Tangential FansSeries TW, impeller diameter 125mm

Fan curves for nominal length 400 mm (15.75 inch)The indicated shaft power consumption does not includethe loss in the belt drive

Test conditions for the fan curves

The indicated curves are valid for an air density of

ρ =0.075 lb/ft³ (1.2 kg/m3). The rating tests where done aslaboratory test according to EN ISO 5801:2008 with unre-stricted inlet and discharge. Fans with a drive power> 4.0 hp (3.0 kW) must be smoothly started.









Fan curves for nominal length 800 mm(31.50 inch)The indicated shaft power consumption does not includethe loss in the belt drive













LTG Tangential Fan type TWR 150(right hand drive)

Service conditionsgas temperatures:-13 F up to +248 F (-25 C bis max. +120 C)ambient temperatures:-13 F up to +104 F (-25 C bis max. +40 C)




Recommended V-belt pulley:profile SPA 12.5 mm (0.49 inch), dw = 160 mm (6.3 inch).DIN 7753.The maximum rated power transmission for the pulley is 9kW (12 hp).Intake and discharge openings have sealing planes andplug in slots to connect exactly to ducts and appliances.The complete fan (including bearing clearance etc.) is bal-anced to grade Q 6.3 according to VDI 2060.


Delivery Range Series TW, impeller diameter 150 mm

typemax.


TWR 150/401/NTWL 150/401/N

-25 C to +120 C(-13 F to +248 F)

401 mm(15.79 inch)

marine gradealuminium galvanized steel

TWR 150/601/NTWL 150/601/N

601 mm(23.66 inch)

TWR 150/864/NTWL 150/864/N

864 mm(34.02 inch)

TWR 150/1064/NTWL 150/1064/N

1064 mm(41.89 inch)

TWR 150/1264/NTWL 150/1264/N

1264 mm(49.76 inch)

TWR 150/1464/NTWL 150/1464/N

1464 mm(57.64 inch)






To connect to ducts and appliances plug in slots and seal-ing planes are provided over the whole fan width for the in-

take and discharge openings.



The fans are designed for continuous operation with con-stant load (operation mode S1 analogous to VDE 0530):For frequent start/stop operation please check with LTG.


"

ø24

k6

Dimensions in mm

type/nominal length

dimensionsL A C

air-volumeVmax

pressureΔpfmax

speednmax

massesappr.

[mm][inch]

[mm][inch]

[mm][inch]

[m3/h][cfm]

[Pa][” wg] rpm

[kg][lb]

TWR 150/401/NTWL 150/401/N

40115.79

54721.54

44717.60

62003650

6002.4 2800

1022

TWR 150/601/NTWL 150/601/N

60123.66

74729.41

64725.47

88005180

6002.4 2800

1329

TWR 150/864/NTWL 150/864/N

86434.02

101039.76

91035.83

120007063

5102 2600

1636

TWR 150/1064/NTWL 150/1064/N

106441.89

121047.64

111043.70

140008240

4301.7 2400

1942

TWR 150/1264/NTWL 150/1264/N

126449.76

141055.51

131051.57

120007063

2401 1800

2249

TWR 150/1464/NTWL 150/1464/N

146457.64

161063.39

151059.45

110006475

1553.2 1440

2555



Plug in slots

C

A

B

D


C

AB

D

d Plug in slots 6 mm deepfor duct connection,

max. 1.5 mm sheet thick-ness

K slots for self-tapping screws,4.2 mm,max. 10 mm screw in depth

D slots for self-tapping screws,3.9 (3.5) mm,max. 7.5 mm screw in depth


LTG High Performance Tangential FansSeries TW, impeller diameter 150mm





Sp

ee

d[r

pm

]

2800 = max. rated speed

Sta

ticp

ress

ure

p

f[in

chw

g]

ρ = 0.075 lb/ft³ (1.2 kg/m3)

Sta

tic

pre

ss

ure

p

f[P

a]

V [m3/h]

V [cfm]

Pd [Pa]

Pd [inch wg]

4.003.603.202.80

2.40

2.00

1.60

1.40

1.20

1.00

0.80

0.60

0.40

0.32

0.24

0.20

0.16

0.12

0.10

0.08

0.06

0.04

0.36

350

410

470

530

590

880

1180

1470

1770

2060

2350

2950

3530

4120

4710

0.06

0.08

0.12

0.16

0.24

0.32

0.40

0.60

0.80

1.20

1.60

2.40

3.20

4.00

6.00

8.00

10.00

7.4/5.54.0/3.0

2.0/1.5

1.5/1.1

1.0/0.75

0.74/0.55

0.50/0.37

0.34/0.25

0.24/0.18

0.16/0.12

0.12/0.09

1000900

700

500

250

300

350

400

600

800

200

150

100908070

60

50

40

30

20

15

10

25

600

700

800

900

1000

1500

2000

2500

3000

3500

4000

5000

6000

7000

8000

1000

1400

1600

1800

2000

2400

1200

800

15 20 30 40 60 80 100

150

200

300

400

600

800

1000

1500

2000

2500

55

4547

49

51

5354

Total efficiencyt [%]







10.0/7.55.4/4.0

4.0/3.0

3.0/2.2

1.5/1.1

1.0/0.75

0.50/0.37

0.34/0.25

0.16/0.12

0.24/0.18

Sta

ticp

ress

ure

p

f[in

chw

g]

Sta

tic

pre

ss

ure

p

f[P

a]

2800 = max rated speed

ρ = 0.075 lb/ft³ (1.2 kg/m3)


Sp

ee

d[r

pm

]

1000

1400

1600

1800

2000

2400

1200

800

0.74/0.55

58

45

49

51

5355

57

47

4.003.603.202.80

2.40

2.00

1.60

1.40

1.20

1.00

0.80

0.60

0.40

0.32

0.24

0.20

0.16

0.12

0.10

0.08

0.06

0.04

0.36

1000900

700

500

250

300

350

400

600

800

200

150

100908070

60

50

40

30

20

15

10

25

350

410

470

530

590

880

1180

1470

1770

2060

2350

2950

3530

4120

4710

600

700

800

900

1000

1500

2000

2500

3000

3500

4000

5000

6000

7000

8000 V [m3/h]

V [cfm]

Pd [Pa]

Pd [inch wg]

5300

5900

9000

10000

15 20 30 40 60 80 100

150

200

300

400

600

800

1000

1500

0.06

0.08

0.12

0.16

0.24

0.32

0.40

0.60

0.80

1.20

1.60

2.40

3.20

4.00

6.00







14.75/1110.0/7.5

7.4/5.5

4.0/3.0

3.0/2.2

2.0/1.5

1.5/1.1

1.0/0.75

0.50/0.37

0.74/0.55

0.34/0.25

0.24/0.18

Sta

ticp

ress

ureΔ

pf

[inch

wg

]

Sta

tic

pre

ss

ureΔ

pf

[Pa

]


ρ = 0.075 lb/ft³ (1.2 kg/m3)


1000

1400

1600

1800

2000

2300

1200

800

58

45

49

51

53

55

57

47

56

4.003.603.202.80

2.40

2.00

1.60

1.40

1.20

1.00

0.80

0.60

0.40

0.32

0.24

0.20

0.16

0.12

0.10

0.08

0.06

0.04

0.36

1000900

700

500

250

300

350

400

600

800

200

150

100908070

60

50

40

30

20

15

10

25

880

1180

1470

1770

2060

2350

2950

3530

4120

4710

1500

2000

2500

3000

3500

4000

5000

6000

7000

8000

5300

5900

9000

10000 V [m3/h]

V [cfm]

Pd [Pa]

Pd [inch wg]

590

1000

8800

15000

15 20 30 40 60 80 100

150

200

300

400

600

800

1000

1500

0.06

0.08

0.12

0.16

0.24

0.32

0.40

0.60

0.80

1.20

1.60

2.40

3.20

4.00

6.00

Sp

ee

d[r

pm

]




Test conditions for the fan curvesThe indicated curves are valid for an air density of


14.75/11

10.0/7.5

7.4/5.5

4.0/3.0

3.0/2.2

2.0/1.5

1.5/1.1

1.0/0.75

0.74/0.55

0.50/0.37

0.34/0.25

Sta

ticp

ress

ure

p

f[in

chw

g]

Sta

tic

pre

ss

ure

p

f[P

a]


ρ = 0.075 lb/ft³ (1.2 kg/m3)


Sp

ee

d[r

pm

]

1000

1400

1600

1800

2000

2200

1200

800

58

4547

49

51

53

5755

4.003.603.202.80

2.40

2.00

1.60

1.40

1.20

1.00

0.80

0.60

0.40

0.32

0.24

0.20

0.16

0.12

0.10

0.08

0.06

0.04

0.36

1000900

700

500

250

300

350

400

600

800

200

150

100908070

60

50

40

30

20

15

10

25

V [m3/h]

V [cfm]

Pd [Pa]

Pd [inch wg]

880

1180

1470

1770

2060

2350

2950

3530

4120

4710

1500

2000

2500

3000

3500

4000

5000

6000

7000

8000

5300

5900

9000

10000

8800

15000

15 20 30 40 60 80 100

150

200

300

400

600

800

1000

1500

0.06

0.08

0.12

0.16

0.24

0.32

0.40

0.60

0.80

1.20

1.60

2.40

3.20

4.00

6.00







5.4/4.0

4.0/3.0

3.0/2.2

2.0/1.5

1.5/1.1

1.0/0.75

0.74/0.55

0.50/0.37

0.34/0.25

Sta

ticp

ress

ure

p

f[in

chw

g]

Sta

tic

pre

ss

ure

p

f[P

a]


r = 0.075 lb/ft³ (1.2 kg/m3)


Sp

ee

d[r

pm

]

1000

1200

1400

1600

800

58

47

49

51

53

55

57

4.003.603.202.80

2.40

2.00

1.60

1.40

1.20

1.00

0.80

0.60

0.40

0.32

0.24

0.20

0.16

0.12

0.10

0.08

0.06

0.04

0.36

1000900

700

500

250

300

350

400

600

800

200

150

100908070

60

50

40

30

20

15

10

25

V [m3/h]

V [cfm]

Pd [Pa]

Pd [inch wg]

880

1180

1470

1770

2060

2350

2950

3530

4120

4710

1500

2000

2500

3000

3500

4000

5000

6000

7000

8000

5300

5900

9000

10000

8800

15000

15 20 30 40 60 80 100

150

200

300

400

600

800

1000

0.06

0.08

0.12

0.16

0.24

0.32

0.40

0.60

0.80

1.20

1.60

2.40

3.20

4.00










LTG Tangential Fan type TWR 200(right hand drive)

Service conditionsgas temperatures:-13 F / -25 C up to +248 F / 120 Cambient temperatures:-13 F/ -25 C up to +104 F / 40 C




Recommended V-belt pulley:profile SPA 12.5 mm (0.49 inch), dw = 160 mm (6.3 inch).DIN 7753.The maximum rated power transmission for the pulley is 9kW (12 hp).Intake and discharge openings have sealing planes andplug in slots to connect exactly to ducts and appliances.The complete fan (including bearing clearance etc.) is bal-anced to grade Q 6.3 according to VDI 2060.


Delivery range series TW impeller diameter 200 mm

typemax.


TWR 200/400/NTWL 200/400/N

-25 C to +120 C(-13 F to +248 F)

400 mm(15.75 inch)

marine gradealuminium galvanized steel

TWR 200/630/NTWL 200/630/N

630 mm(24.8 inch)

TWR 200/800/NTWL 200/800/N

800 mm(31.5 inch)

TWR 200/1000/NTWL 200/1000/N

1000 mm(39.37 inch)

TWR 200/1250/NTWL 200/1250/N

1250 mm49.21 inch)






To connect to ducts and appliances sealing planes areprovided over the whole fan width for the intake and dis-charge openings.




The fans are designed for continuous operation with con-stant load (operation mode S1 analogous to VDE 0530):For frequent start/stop operation please check with LTG.

INTAKE

DISCHARGE M6

k624

40 550

30.5

L38 38

15

86

119.5

119.5

30.5

200

50

16

125

43121

2020125

350

300

8

27

30.5144.5 144.5

30.5

5025050

15

16

38

2012

50

A

C

Dimensions in mm

type/nominal length

dimensionsL A C

air-volumeVmax

pressureΔpfmax

speednmax

massesappr.

mm[inch]

mm[inch]

mm[inch]

m3/hcfm

Pa” wg rpm

kglb

TWR 200/400/NTWL 200/400/N

40015.75

56222.13

44417.48

60003550

5502.2 2400

1636

TWR 200/630/NTWL 200/630/N

63024.8

79231.18

67426.54

80004700

4001.6 2100

2044

TWR 200/800/NTWL 200/800/N

80031.5

96237.87

84433.23

90005300

3001.2 1800

2453

TWR 200/1000/NTWL 200/1000/N

100039.37

116245.75

104441.10

100005900

2401 1600

2862

TWR 200/1250/NTWL 200/1250/N

125049.21

141255.59

129450.94

90005300

1400.6 1200

3271


LTG LTG High Performance Tangential FansSeries TW, impeller diameter 200 mm

Plug in slots

fE

A

f


A

E






ρ =0.075 lb/ft³ (1.2 kg/m3). The rating tests where done aslaboratory test according to EN ISO 5801:2008 with unre-stricted inlet and discharge. Fans with a drive power> 4.0 hp(3.0 kW) must be smoothly started.

590

820

1060

1300

1530

1770

2000

2240

2470

2710

2950

3180

3400

0.08

0.12

0.16

0.20

0.24

0.28

0.32

0.36

0.80

1.20

1.60

2.00

2.40

2.80

0.08

0.12

0.16

0.20

0.24

0.28

0.32

0.36

0.40

0.80

1.20

1.60

2.00

2.40

2.80

10.2/7.5

4.0/3.0

1.5/1.1

0.50/0.37

2.0/1.5

0.34/0.25

1.0/0.75

0.74/0.55

0.24/0.18

0.16/0.12

0.12/0.09

0.60

0.40

20

30

40

50

60

70

80

90

200

300

400

500

600

700

150

100

Sta

ticp

ress

ure

p

f[in

chw

g]

Sta

tic

pre

ss

ure

p

f[P

a]

V [m3/h]

V [cfm]

Pd [Pa]

Pd [inch wg]


r = 0.075 lb/ft³ (1.2 kg/m3)

1800

1600

1400

1200

2200

2000

1000

600

800

5.5/4.0

1000

1400

1800

2200

2600

3000

3400

3800

4200

4600

5000

5400

5800

6200

6600

7000

20 30 40 50 60 70 80 90 100

200

300

400

500

600

700

800

900

3650

3885

4120

3.20

3.60

Totalefficiencyt [%]

Sp

ee

d[r

pm

]







1.5/1.1

0.50/0.37

2.0/1.5

1.0/0.75

0.74/0.55


Sta

ticp

ress

ure

p

f[in

chw

g]

Sta

tic

pre

ss

ure

p

f[P

a]

V [m3/h]

V [cfm]

Pd [Pa]

Pd [inch wg]

ρ = 0.075 lb/ft³ (1.2 kg/m3)

20

30

40

50

60

70

80

90

200

300

400

500

600

700

150

100

0.08

0.12

0.16

0.20

0.24

0.28

0.32

0.36

0.80

1.20

1.60

2.00

2.40

2.80

0.60

0.40

0.08

0.12

0.16

0.20

0.24

0.28

0.32

0.36

0.40

0.80

1.20

1.60

2.00

2.40

5.5/4.0

4.0/3.0

0.34/0.25

0.24/0.18

0.16/0.12

0.12/0.09

10.2/7.5

1500

1500

2000

2500

3000

3500

4000

4500

5000

5500

6000

6500

7000

7500

8000

8500

9000

9500

10000

20 30 40 50 60 70 80 90 100

200

300

400

500

600

700

800

1000

1200

1400

2000

1800

1600

600


880

1180

1471

1770

2060

2350

2650

2950

3240

3530

3830

4120

4410

4710

5000

5300

5600

5890

2.80

Sp

ee

d[r

pm

]







20

30

40

50

60

70

80

90

200

300

400

500


150

100

Sta

ticp

ress

ure

p

f[in

chw

g]

Sta

tic

pre

ss

ure

p

f[P

a]

V [m3/h]

V [cfm]

Pd [Pa]

Pd [inch wg]

Sp

ee

d[r

pm

]

ρ = 0.075 lb/ft³ (1.2 kg/m3)

0.08

0.12

0.16

0.20

0.24

0.28

0.32

0.36

0.80

1.20

1.60

2.00

0.60

0.40

0.08

0.12

0.16

0.20

0.24

0.28

0.32

0.36

0.40

0.80

1.20

0.60

4.0/3.0

1.5/1.1

0.50/0.37

2.0/1.5

0.34/0.25

1.0/0.75

0.74/0.55

0.24/0.18

0.16/0.12

0.12/0.09

2000

2800

3600

4400

5200

6000

6800

7600

8400

9200

10000

10800

11600

20 30 40 50 60 70 80 90 100

150

200

300

400

500

600

1400

1600

1200

1000

800

600

10.2/7.55.5/4.0

1180

1650

2100

2600

3060

3530

4000

4470

4940

5420

5890

6360

6830

1.60

2.00

2.40








1471

1940

2410

2880

3360

3830

4300

4770

5240

5710

0.016

0.024

0.032

0.04

0.08

0.16

0.24

0.32

0.4

0.8


Sta

ticp

ress

ure

p

f[in

chw

g]

Sta

tic

pre

ss

ure

p

f[P

a]

V [m3/h]

V [cfm]

Pd [Pa]

Pd [inch wg]

Sp

ee

d[r

pm

]

ρ = 0.075 lb/ft³ (1.2 kg/m3)


20

30

40

50

60

70

80

90

200

300

400

150

100

0.08

0.12

0.16

0.20

0.24

0.28

0.32

0.36

0.80

1.20

1.60

0.60

0.40

4.0/3.0

1.5/1.1

0.50/0.37

2.0/1.5

0.34/0.25

1.0/0.75

0.74/0.55

0.16/0.12

0.24/0.18

2500

3300

4100

4900

5700

6500

7300

8100

8900

9700

10500

11300

4 6 8 10 20 40 60 80 100

200

400

1400

1200

1000

600

800

6.8/5.05.4/4.0

6180

6650

1.60







1770

2000

2240

2470

2710

2950

3180

3400

3650

3890

4120

4360

4590

4830

5060

5300

5530

20

30

40

50

60

70

80

90

200

300

1200 = max rated speed150

100

Sta

ticpr

essu

re

p f[in

chw

g]

Sta

tic

pre

ss

ure

p

f[P

a]

V [m3/h]

V [cfm]

Pd [Pa]

Pd [in wg]

ρ = 0.075 lb/ft³ (1.2 kg/m3)

0.08

0.12

0.16

0.20

0.24

0.28

0.32

0.36

0.80

1.20

0.60

0.40

0.008

0.016

0.020

0.024

0.032

0.4

0.8

0.16

0.24

0.32

0.4

0.8

1.5/1.1

0.50/0.37

2.0/1.5

0.34/0.25

1.0/0.75

0.74/0.55

0.16/0.12

0.24/0.18

3000

3400

3800

4200

4600

5000

5400

5800

6200

6600

7000

7400

7800

8200

8600

9000

9400

10200

11000

11800

2 4 5 6 8 10 20 40 60 80 100

200

600

1000

800

4.0/3.0


Sp

ee

d[r

pm

]

5060

6000

6950


LTG High Performance Tangential FansSeries TW, impeller diameter 150 and 200 mmAcoustical dataThe acoustical data are for discharge side, tested in a re-verberant field.

The A-weighted sound power level LWA can be trans-formed into a A-weighted sound pressure level LPA by theequation LPA=LWA-10 log s/1 m2.

The sound pressure level in the free field in 1 m distance(full spheric sound radiation) is abt. 11 dB less than thesound power level.

The equation for the unweighted sound power level ac-cording to VDI 2081 is:LW=LWspecific+10 log V + 20 log pt

For the total pressure pt use Pa and for the air volume Vuse m3/s.

Unweighted Sound Power Level LW [dB] LW = LWspez + L1 + L2 [dB]

8

6

4

2

0

L3 [dB]

Fan Speed n [rpm]

500 1000 1500 2000 2500 3000

A-weighted Sound Power Level LWA [dBA] LWA = LW-L3 [dBA]


LTG High Performance Tangential FansSeries TW, impeller diameter 150mm and 200 mm

Accessories and special versionsBelt pulley

V-belt pulley with sleeve, dW = 160 mm (6.3 inch),profile SPA 12.5 mm (0.49 inch), DIN 7753.

With the suction opening on top, viewed against the dis-charge opening, the drive pulley is bolted on optional eitherright hand (TWR) or left hand (TWL).

Belt pulley and taper clamping sleeve are made from greycast iron GG 20.

LTG Accessories:V-belt pulley 1 x SPA Ø 160 mm (6.3 inch)incl. clamping sleeve Ø 24 mm (0.94 inch)Material No. 1004586

Impeller

For extra high corrosion protection requirements, the im-pellers can be made of stainless steel.

Socket head cap screw SW5

90 (3.54)

30 (1.18)

50 (1.97)

26 (1.02)

10 (0.39)

40 (1.57)

d=

160

(6.3

)

20(0.79)

24

(0.9

4)

TW 150: 116 (4.57)

TW 200: 101.5 (4)

Installation, initiation- Clean and degrease all shiny surfaces. Insert taper

clamping sleeve into the hub and bring bores to a flush.- Slightly grease screws and insert. Do not yet tighten the

screws.- Clean and degrease shaft. Push belt pulley with taper

clamping sleeve to the desired position on the shaft.- Tighten the screws uniformly, alternating between the

sides and using a moment of 20 Nm.- Check the moment of the screws after a short period of

service (1/2 to 1 h) and correct if necessary.- To keep foreign bodies from entering the empty bores,

fill them with grease.

Detachment- Loosen all screws. Remove one or two of them com-

pletely, grease and insert them into the ejection bores.- Remove belt pulley with sleeve from the shaft.


LTG High Performance Tangential FansSeries TW, impeller diameter 125, 150 and 200 mmSelection

application example your data designations

gas cold air t [F] temperatureU [V] voltagef [Hz] frequencyV [cfm] air volumeρ [lb/ft³] specific gravitypf [in. “wg] static pressurepd [in. “wg] dynamic pressure

at the dischargearea

pt [in. “wg] total pressurec [m/s] velocity at the

discharge area[cu ft/lb] specific gravity

n [rpm] speedt [%] efficiencyPW [hp] shaft power

consumptionLW [dB] sound power levelLWA [dB(A)] A-weighted sound

power levelLpA [dB(A)] A-weighted sound

pressure level

gas temperature t F -4

ambient temperaturedrive sidecounter side

tt

FF

-5-5

condensation yes

located atvehiclerefrigeration

drive side right hand

arrangement horizontal

drive motor

power supply 3-phase

voltage U V 220 / 380

frequency f Hz 50

specified performance

air volume V cfm 4709

static pressure pf in “wg 250

at specific gravity ρ lbcuft 0.075

active impeller length min.max.

LL

inchinch

35.4351.18

total length max. A inch 55.12

procedure

1. air volume V cfm 4709achievable with length 1064, 1264

2. static pressure pf in “wg 1achievable with length [inch] 41.89

3. drive side right handselectedLTG Tangential Fan type TWR150/1064 Nperformance dataair volume V cfm 4709static pressure pf in “wg 250dynamic pressure pd in “wg 1,51total pressure pt in “wg 2.51exhaust velocity c ft/min 4921.25speed n rpm 2000efficiency t % 54shaft power consumption PW hp 3.35smooth starting noacoustical dataLW spez spec. sound powerlevel dB 39.5

L1 dB 3.5L2 dB 56sound power level LW dB 99L3 dB 2.5sound power level A-weighted LWA dBA 96.5sound pressure level in thefree field in 1 m distance(full spherical sound radiation)

LpA dBA 85.5

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LTG AktiengesellschaftGrenzstraße 770435 StuttgartGermanyTel.: +49 (711) 8201-0Fax: +49 (711) 8201-696E-Mail: [email protected]

LTG Incorporated105 Corporate Drive, Suite ESpartanburg, SC 29303USATel.: +1 (864) 599-6340Fax: +1 (864) 599-6344E-Mail: [email protected]

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