Carrier 90MA, 90MU FPT = Female Pipe Thread MPT = Male Pipe Thread, ODF = Outside Diameter Female

Page 6
Manual background

TABLE 2B - 90MA/MU PHYSICAL DATA – R-407C , SI UNITS

BASE UNIT (90MA/MU)

UNITS

404

 

406

 

408

 

412

NOMINAL CAPACITY

kW

10.5

 

17.6

 

26.4

 

35.1

REFRIGERANT

 

 

 

R-

407C

 

 

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-

407C

 

 

 

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 6

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

 

 

Image 6
Contents COMPONENT ARRANGEMENT - *08/*12 Single-PackageMarine Cooling UnitsCOMPONENT ARRANGEMENT - *04/*06 Installation, Operation and Service InstructionsFPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter FemaleFPT = Female Pipe Thread MPT = Male Pipe Thread Page FPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter FemaleFPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter FemaleFPT = Female Pipe Thread MPT = Male Pipe Thread FIGURE 1 - BASE UNIT INTERIOR DETAILS FIGURE 2 - UNIT DIMENSIONSStep 4 - Rig and Place Unit TYPICAL UNIT SHOWNStep 10 - Make Condenser Connections FIGURE 3 - HORIZONTAL WHEEL CENTERINGFIGURE 4 - CONCENTRIC WHEEL ALIGNMENT FIGURE 5 - TYPICAL CONDENSER WATER PIPINGFIGURE 6 - CONNECTION LOCATIONS FIGURE 7 - CONDENSATE DRAIN TRAP To start unit OPERATIONStep 12 - Make Electrical Connections To Shut Down UnitSERVICE FIGURE 8 - FAN PULLEY ADJUSTMENTReturn-AirGrille Removal Water Regulating Valve FIGURE 9 - GRAVITY FLOW METHODFIGURE 10 - FORCED CIRCULATION METHOD Charging the System 90MU R-407C, R-404A,and R-134aunits FIGURE 12 WIRING SCHEMATIC - 90MA/MU*04/*06 FOR NOTES AND LEGEND, SEE FIGURE90MA-3SISUPERCEDES FORM FIGURE 13 COMPONENT ARRANGEMENT - 90MA/MU*04/*06 90MA-3SISUPERCEDES FORMFIGURE 14 - ELECTRICAL SCHEMATIC - 90MA/MU*08/*12 FOR NOTES AND LEGEND, SEE FIGURE90MA-3SISUPERCEDES FORM 90MA-3SISUPERCEDES FORM 90MA-3SISUPERCEDES FORM 90MA-3SISUPERCEDES FORM