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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. 90MA-3SI SUPERCEDES FORM 62-02971-00 09-2009
Pg 5
TABLE 2A - 90MA/MU PHYSICAL DATA – R-134A , SI UNITS
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
BASE UNIT (90MA/MU) UNITS 308 312
NOMINAL CAPACITY
kW 19.3 28.1
REFRIGERANT
OPERATING WEIGHT
Base unit 90MA kg 406 431
Base Unit 90MU
kg N/ N/
Discharge Plenum
kg 22.7 22.7
COMPRESSOR TYPE
Qty Cylinders 4 6
Qty Unloading Cylinders
0 2
Qty Capacity Steps
1 2
DISCHARGE PRESSURE SWITCH
Opens (90MA)
kPa
Closes (90MA)
kPa
Opens (90MU)
kPa
Closes (90MU)
kPa
SUCTION PRESSURE SWITCH
Opens kPa
Closes
kPa
REFRIGERANT
Typ
Qty (90MA ONLY))
kg 5.1 4.5
CONDENSER (90MA ONLY)
Number...Type
Water Volume Lite
r
EVAPORATOR AIR FAN
Nominal Flow m3/h
r
4245 5660
Standard Speed Range
RPM 402-570 488-692
Maximum Allowable Speed
RPM
Belt Qty/Pulley Pitch Diamete
r
cm 1 / 21.6 1 / 17.8
Motor Pulley Pitch Diameter Range
cm
Motor Nominal Rating (@ 60Hz)…Frame Size
Standard
kW 0.75…56 1.5…56
Alternate (SeeNote 1)
kW 1.5…56 2.2…56
Alternate (See Note 1)
kW 2.2…56 N/
EVAPORATOR COIL
Tube
Qty Rows…Fin Spacing Fins/cm
Face Area
m2 0.68 0.79
RETURN AIR FILTERS
Qty…Size cm
CONDENSER CONNECTIONS (90MA ONLY)
Water Inlet (bottom) Inches FPT 1 1
Water Outler (top)
Inches FPT 1 1
Maximum Working Pressure (Refrigerant Side) kPa
CONDENSATE DRAIN CONNECTIONS
Inches FPT
ACCESSORY ELECTRIC HEAT
Capacity @ 460 volts kW
Capacity @ 400 volts
kW
Number of Electric Heat Stages
R-
Semi-Hermetic, Recip
2310+/-69
1620+/-138
N/
N/
48+/-12
152+/-35
R-
1…Tube in Tube
9.2
Adjustable, Belt Driven Centrifugal:1750 RPM Motor @60hz
1250
6.1 to 8.6 cm
3/8 OD, Copper Tubes, Aluminum Fin
Prime
3…4.9
Factory Supplied, Cleanable
2758
4…40.6 x 50.8 x 2.5
3/4
17.5
2
13.4