Carrier 90MU, 90MA specifications FPT = Female Pipe Thread MPT = Male Pipe Thread

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TABLE 2C - 90MA/MU PHYSICAL DATA – R-404A , SI UNITS

BASE UNIT (90MA/MU)

UNITS

504

 

506

 

508

 

512

NOMINAL CAPACITY

kW

10.5

 

17.6

 

26.4

 

35.1

REFRIGERANT

 

 

 

R-

 

 

 

 

OPERATING WEIGHT

 

 

 

 

 

 

 

 

 

Base unit 90MA

kg

177

 

194

 

406

 

431

 

Base Unit 90MU

kg

150

 

163

 

379

 

404

 

Discharge Plenum

kg

11.3

 

11.3

 

22.7

 

22.7

COMPRESSOR TYPE

 

Scroll

 

 

Semi-Hermetic, Recip

 

Qty Cylinders

 

N/

 

 

4

 

6

 

Qty Unloading Cylinders

 

N/

 

 

0

 

2

 

Qty Capacity Steps

 

1

 

 

1

 

2

DISCHARGE

PRESSURE SWITCH

 

 

 

 

 

 

 

 

 

Opens (90MA)

kPa

 

 

2725+/-69

 

 

 

Closes (90MA)

kPa

 

 

2034+/-138

 

 

 

Opens (90MU)

kPa

 

 

2937+/-48

 

 

 

Closes (90MU)

kPa

 

 

2206+/-138

 

 

SUCTION

PRESSURE SWITCH

 

 

 

 

 

 

 

 

 

Opens

kPa

 

 

186+/

-28

 

 

 

Closes

kPa

 

 

462+/-48

 

 

REFRIGERANT

 

 

 

 

 

 

 

 

 

Typ

 

 

 

R-

 

 

 

 

 

Qty (90MA ONLY))

kg

1.4

 

2.4

 

5.1

 

4.5

CONDENSER (90MA ONLY)

 

 

 

 

 

 

 

 

 

Number...Type

 

 

 

1…Tube

in Tube

 

 

 

Water Volume

Liter

1.48

 

3.3

 

 

9.2

EVAPORATOR AIR FAN

 

Adjustable, Belt Driven Centrifugal: 1750 RPM Motor@60hz

 

Nominal Flow

m3/hr

1698

 

2830

 

4245

 

5660

 

Standard Speed Range

RPM

534-757

 

534-757

 

402-570

 

488-692

 

Maximum Allowable Speed

RPM

 

 

1250

 

 

 

 

Belt Qty/Pulley Pitch Diameter

cm

1 / 16.3

 

1 / 16.3

 

1 / 21.6

 

1 / 17.8

 

Motor Pulley Pitch Diameter Range

cm

 

 

6.1 to

8.6 cm

 

 

 

Motor Nominal Rating (@ 60Hz)…Frame Size

 

 

 

 

 

 

 

 

 

Standard

kW

0.25…56

 

0.56…56

 

0.75…56

 

1.5…56

 

Alternate (SeeNote 1)

kW

0.56…56

 

0.75…56

 

1.5…56

 

2.2…56

 

Alternate (See Note 1)

kW

N/

 

N/

 

2.2…56

 

N/

EVAPORATOR COIL

 

3/8 OD, Copper Tubes, Aluminum Fin

 

Tube

 

 

 

Prime

 

 

 

 

Qty Rows…Fin Spacing

Fins/cm

2…5.7

 

3…5.7

 

 

3…4.9

 

Face Area

m2

0.46

 

0.46

 

0.68

 

0.79

RETURN

AIR FILTERS

 

 

Factory Supplied, Cleanable

 

Qty…Size

cm

2…40.6 x 63.5 x 2.5

 

4…40.6 x 50.8 x 2.5

CONDENSER CONNECTIONS (90MA ONLY)

 

 

 

 

 

 

 

 

 

Water Inlet (bottom)

Inches FPT

1/2

 

3/4

 

1

 

1

 

Water Outler (top)

Inches FPT

1/2

 

3/4

 

1

 

1

 

Maximum Working Pressure (Refrigerant Side)

kPa

 

 

2758

 

 

 

CONDENSATE DRAIN CONNECTIONS

Inches FPT

 

 

3/4

 

 

 

ACCESSORY ELECTRIC HEAT

 

 

 

 

 

 

 

 

 

Capacity @ 460 volts

kW

5.25

 

 

 

17.5

 

Capacity @ 400 volts

kW

4.03

 

 

 

13.4

 

Number of Electric Heat Stages

 

1

 

 

 

2

LEGEND

 

 

 

 

 

 

 

 

FPT = Female Pipe Thread MPT = Male Pipe Thread

ODF = Outside Diameter Female

 

 

 

NOTES:

1. Motors other than those furnished with unit must be purchased separately. Contact your Carrier Marine representative

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations

Printed in U.S.A.

Pg 7

90MA-3SI SUPERCEDES FORM 62-02971-00 09-2009

 

 

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Contents Installation, Operation and Service Instructions Single-PackageMarine Cooling UnitsCOMPONENT ARRANGEMENT - *04/*06 COMPONENT ARRANGEMENT - *08/*12ODF = Outside Diameter Female FPT = Female Pipe Thread MPT = Male Pipe ThreadFPT = Female Pipe Thread MPT = Male Pipe Thread Page ODF = Outside Diameter Female FPT = Female Pipe Thread MPT = Male Pipe ThreadODF = Outside Diameter Female FPT = Female Pipe Thread MPT = Male Pipe ThreadFPT = Female Pipe Thread MPT = Male Pipe Thread TYPICAL UNIT SHOWN FIGURE 2 - UNIT DIMENSIONSStep 4 - Rig and Place Unit FIGURE 1 - BASE UNIT INTERIOR DETAILSFIGURE 5 - TYPICAL CONDENSER WATER PIPING FIGURE 3 - HORIZONTAL WHEEL CENTERINGFIGURE 4 - CONCENTRIC WHEEL ALIGNMENT Step 10 - Make Condenser ConnectionsFIGURE 6 - CONNECTION LOCATIONS FIGURE 7 - CONDENSATE DRAIN TRAP To Shut Down Unit OPERATIONStep 12 - Make Electrical Connections To start unitFIGURE 8 - FAN PULLEY ADJUSTMENT SERVICEReturn-AirGrille Removal FIGURE 9 - GRAVITY FLOW METHOD Water Regulating ValveFIGURE 10 - FORCED CIRCULATION METHOD Charging the System 90MU R-407C, R-404A,and R-134aunits FOR NOTES AND LEGEND, SEE FIGURE FIGURE 12 WIRING SCHEMATIC - 90MA/MU*04/*0690MA-3SISUPERCEDES FORM 90MA-3SISUPERCEDES FORM FIGURE 13 COMPONENT ARRANGEMENT - 90MA/MU*04/*06FOR NOTES AND LEGEND, SEE FIGURE FIGURE 14 - ELECTRICAL SCHEMATIC - 90MA/MU*08/*1290MA-3SISUPERCEDES FORM 90MA-3SISUPERCEDES FORM 90MA-3SISUPERCEDES FORM 90MA-3SISUPERCEDES FORM