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035-18525-001-B-0203

14

Unitary Products Group

   

FIGURE 12: BLOWER PERFORMANCE CURVE

TABLE 8: SUPPLY AIR BLOWER PERFORMANCE 

1, 2

 

  

NOTE:  Refer to Form 550.13-AD1 for blower performance curves.

RPM range for the standard, factory-mounted drive components.

 

1Available static pressure in IWG to overcome the resistance of the duct system and any accessories added to the unit. Refer to the respective tables for the

resistance of these accessories and   for additional motor and drive data.

2 Motors can be selected to operate into their service factor because they are located in the moving air stream, upstream of any heating device.  Units with steam or 

hot water coils are the only  exception.

  

LA120

3000

3500

4000

4500

5000

5500

6000

6500

7000

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

1.1

External Static

CF

M

0 Turns

1 Turn

2 Turns

3 Turns

4 Turns

5 Turns

10 TON BLOWER PERFORMANCE

ESP

CFM

RPM

Watts

CFM

RPM

Watts

CFM

RPM

Watts

CFM

RPM

Watts

CFM

RPM

Watts

CFM

RPM

Watts

0.2

-

-

-

5775

680

2168

5402

650

1851

4990

616

1516

4571

582

1281

4250

548

1097

0.4

5521

713

2283

5409

684

1954

4810

653

1633

4326

618

1307

3785

582

1069

3484

550

903

0.6

4864

718

2006

4736

688

1695

4098

657

1353

3411

622

1052

2635

586

826

-

-

-

0.8

4221

722

1695

3780

693

1393

2860

661

1019

-

-

-

-

-

-

-

-

-

1

3223

728

1376

2625

697

1097

-

-

-

-

-

-

-

-

-

-

-

-

0 turns

1 turn

2 turns

3 turns

4 turns

5 turns

Exceeds Amperage rating of motor.

Summary of Contents for LA120

Page 1: ...IONS 4 AGENCY APPROVALS 4 INSPECTION 4 INSTALLATION 6 MAINTENANCE 16 NOTES CAUTIONS AND WARNINGS Installer should pay particular attention to the words NOTE CAUTION and WARNING Notes are intended to c...

Page 2: ...ION 8 4 SUPPLY AIR PLENUM ACCESSORY 9 5 BASE ACCESSORY VERTICAL ONLY 9 6 RECOMMENDED DRAIN PIPING 10 7 RETURN AIR GRILLE ACCESSORY VERTICAL 10 Fig Pg 8 FIELD WIRING DIAGRAMS FOR POWER SUPPLY 12 9 FIEL...

Page 3: ...tandard Efficiency 2 Pipe B R 22 Standard Efficiency 4 Pipe 120 Nominal Cooling Capacity MBH 090 7 1 2 Ton 120 10 Ton 150 12 1 2 Ton 180 15 Ton 240 20 Ton C Heat Type C Cooling Only 00 Nominal Heating...

Page 4: ...on this equipment The forms referenced in this instruction may be ordered from Standard Register 2101 West Tecumseh Road Norman Oklahoma 73069 Toll Free TEL 877 318 7920 Toll Free FAX 877 379 7920 Thi...

Page 5: ...provided in the filter rack Qty Size in 6 20 X 20 X 1 Face Area Sq Ft 16 7 Operating Charge Refrigerant 22 Lbs Oz 5 8 Weight Lbs Shipping 439 Operating 399 Accessory Weights Lbs Electric Heaters 10 K...

Page 6: ...e suspended from above as shown in Figure 1 Refer to Form 035 16622 001 for more information on the installation of the suspension accessory and for the individual load on each hanger rod A field adde...

Page 7: ...illips machine bolts that hold the coil and blower sections together A bolt is located near each corner 3 Move the blower section to the proper location 4 Attach the blower section to the coil section...

Page 8: ...CCESS OPENING FOR POWER SUPPLY WIRING 1 2 WIRING HARNESS LOCATION This opening in the bottom of the heater control box is used for the wiring harness that connects the heater accessory to the basic un...

Page 9: ...n and a sealing material such as permagum should be packed around refrigerant lines where they penetrate a wall to reduce vibration and to retain some flexibility Support all refrigerant lines at mini...

Page 10: ...ith these codes Route the power wires into the unit through one of the 7 8 knockouts in the panel with the supply air opening and connect them to the terminals on blower motor contactor 10M Route the...

Page 11: ...t is made by moving the blower motor mount ing plate Refer to Figure 7 Turning the adjustment bolt B moves the motor mounting plate up or down Note Never loosen the tow nuts C Two hex nuts A have to b...

Page 12: ...orator coil may vary greatly measuring the pressure drop across a wet coil under field conditions would be inaccurate To assure a dry coil the refrigerant system should be de activated while the test...

Page 13: ...Motor Blower HP Blower RPM Adjustable Motor Pulley Fixed Blower Pulley Belt Pitch Dia Inches Bore Inches Pitch Dia Inches Bore Inches Designation Pitch Lg Inches LA120 2 549 716 3 1 4 1 7 8 9 5 1 A55...

Page 14: ...ing air stream upstream of any heating device Units with steam or hot water coils are the only exception LA120 3000 3500 4000 4500 5000 5500 6000 6500 7000 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 1 1...

Page 15: ...1 9 1 0 2 1 8 2 5 8 K N O C K O U T F O R 1 5 8 O D S U C T I O N C O N N 3 2 3 8 1 8 7 8 6 5 1 2 5 7 8 B L O W E R S E C T I O N 7 1 4 1 6 1 2 7 8 1 9 3 8 2 1 7 8 6 0 3 4 B L O W E R M O T O R A N D...

Page 16: ...LUBRICATION The bearings for the blower shaft and the blower motors are permanently lubricated and should not require additional lubricant BELTS Maintain belt tension to extend belt life Replace when...

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