Carrier 90MU Manuel D’Utilisation

Page de 22
 
 
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 2
TABLE 1A - 90MA/MU PHYSICAL DATA – R-134A , ENGLISH UNITS (See Table 2A for 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
 
Tons
5.5
8
REFRIGERANT
 
OPERATING WEIGHT
 
Base unit 90MA
 
Pounds
895
950
Base Unit 90MU
 
Pounds
N/
N/
Discharge Plenum
 
Pounds
50
50
COMPRESSOR TYPE
 
Qty Cylinders
 
4
6
Qty Unloading Cylinders
 
0
2
Qty Capacity Steps
 
1
2
DISCHARGE PRESSURE SWITCH
 
Opens (90MA)
 
PSIG
Closes (90MA)
 
PSIG
Opens (90MU)
 
PSIG
Closes (90MU)
 
PSIG
SUCTION PRESSURE SWITCH
 
Opens
 
PSIG
Closes
 
PSIG
REFRIGERANT
 
Typ
Qty (90MA ONLY))
 
Pounds
11.2
10
CONDENSER (90MA ONLY)
 
Number...Type
 
Water Volume
 
Gallons
EVAPORATOR AIR FAN
 
Nominal Flow
 
CFM
3000
4000
Standard Speed Range
 
RPM
487-690
591-838
Maximum Allowable Speed
 
RPM
Belt Qty/Pulley Pitch Diameter
 
Inches
1 /  8.5
1 /  7.0
Motor Pulley Pitch Diameter Range
 
Inches
Motor Nominal Rating (@ 60Hz)…Frame Size
Standard
 
HP
1…56
2…56
Alternate (SeeNote 1)
 
HP
2…56
3…56
Alternate (See Note 1)
 
HP
3…56
N/
EVAPORATOR COIL
 
Tube 
Qty Rows…Fin Spacing
 
Fins/Inch
Face Area
 
Sq Ft
7.3
8.5
RETURN AIR FILTERS
 
Qty…Size
 
Inches
CONDENSER CONNECTIONS (90MA ONLY)
 
Water Inlet (bottom)
 
Inches FPT
1
1
Water Outler (top)
 
Inches FPT
1
1
Maximum Working Pressure (Refrigerant Side)
PSIG
CONDENSATE DRAIN CONNECTIONS
 
Inches FPT
ACCESSORY ELECTRIC HEAT
 
Capacity @ 460 volts
 
Watts
Capacity @ 400 volts
 
Watts
Number of Electric Heat Stages
 
R-
R-
Semi-Hermetic, Recip
1…Tube in Tube
 
1250
 
Adjustable, Belt Driven Centrifugal: 1750 RPM Motor@ 60hz
7+/-3
 
22+/-5
 
2.42
 
335+/-10
 
235+/-10
 
N/
N/
2.4 to 3.4 inches
 
3/8 OD, Copper Tubes, Aluminum Fin
3…12.5
 
Prime
 
Factory Supplied, Cleanable
 
4…16 x 20 x 1
 
17.5
 
13.4
 
2
 
400
 
3/4