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Table 2 90MA/MF/MU Physical Data -- Refrigerant 407C
R--407C -- English Units R--407C -- Metric Units
BASE UNIT 90MA/MF/MU UNITS
English (Metric)
404 406 408 412 404 406 408 412
NOMINAL CAPACITY Tons (kW) 3 5 7.5 10 10.5 17.6 26.4 35.1
OPERATING WEIGHT
Base Unit -- 90MA/MF Pounds (kg) 390 427 895 950 177 194 406 431
Base Unit -- 90MU Pounds (kg) 330 360 835 890 150 163 379 404
Discharge Plenum Pounds (kg) 25 25 50 50 11.3 11.3 22.7 22.7
COMPRESSOR TYPE Welded Hermetic
Scroll
Semi--Hermetic
Reciprocating
Welded Hermetic
Scroll
Semi--Hermetic
Reciprocating
Quantity of Cylinders -- -- 4 6 -- -- 4 6
Quantity of Unloading Cylinders -- -- 0 2 -- -- 0 2
Quantity of Capacity Steps -- -- 1 2 -- -- 1 2
DISCHARGE PRESSURE SWITCH
Opens -- 90MA/MF psig (kPa) 39510 272569
Closes -- 90MA/MF psig (kPa) 29520 2034138
Opens -- 90MU psig (kPa) 4267 293748
Closes -- 90MU psig (kPa) 32020 2206138
SUCTION PRESSURE SWITCH
Opens psig (kPa) 274 18628
Closes psig (kPa) 677 46248
OPERATING CHARGE -- 90MA/MF pounds (kg) 3.1 5.3 11.2 10.0 1.4 2.4 5.1 4.5
CONDENSER -- 90MA/MF
Number & T ype 1....Tube In Tu be
Water Volume gallon (liter) 0.39 0.86 2.42 1.48 3.3 9.2
EVAPORATOR AIR FAN Adjustable, Belt Driven Centrifugal: 1750 RPM Motor @ 60 Hz
Nominal Flow cfm (m
3
/h) 1200 2000 3000 4000 1698 2830 4245 5660
Standard Speed Range RPM 525-750 647-915 495-700 600-850 427-652 593-762 412-583 500-708
Maximum Allowable RPM 1050
Belt Quantity / Pulley Pitch Diameter inc hes (cm) 1/8.0 1/6.4 1/8.5 1/7.0 1 / 20.3 1 / 16.3 1 / 21.6 1 / 17.8
Motor Pulley Pitch Diameter Range inches (cm) 2.4to3.4 6.1to8.6
Motor Nomina l Rating(@60 Hz)...Frame Size
Standard horse power 1/3...56 3/4...56 1...56 2...56 .25 / 56 .56 / 5 6 .75 / 56 1.5 / 56
Alternate(SeeNote1) horse power 3/4...56 1...56 2...56 3...56 .56 / 5 6 .75 / 56 1.5 / 56 2.2 / 56
Alternate(SeeNote1) horse power -- -- -- -- 3...56 -- -- -- -- -- -- 2. 2 / 56 -- --
EVAPORATOR COIL 3/8 OD, Copper Tubes, Aluminum Fins
Tube Type Prime Prime
Quantity of Rows...fin Spacing fins/inch(cm) 2...14.4 3...14.4 3. ..12.5 2...5.7 3...5.7 3...4.9
Face Area sq ft (sq m) 5 5 7.3 8.5 0.46 0.46 0.68 0.79
RETURN AIR FILTERS Factory Supplied, Cleanable Factory Supplied, Cleanable
Quantity...Size inches (cm) 2...16 x 25 x 1 4 ...1 6 x 20 x 1 2...40.6x63.5x2.5 4...40.6x50.8x2.5
CONDENSER CONNECTIONS
Water Inlet (bottom) & Outlet (top) inches FPT 1/2 3/4 1 1 1/2 3/4 1 1
Maximum Working Pressure (refrigerant side) psig (kPa) 400 2758
CONDENSATE DRAIN CONNECTIONS inches FPT 3/4 3/4
ACCESSORY HEATING COILS
HOT WATER
Quantity of Rows...fin spacing fins/inch(cm) 1...15 1...15 2...14 2...14 1...5.9 1...5.9 2...5.5 2...5.5
Face Area sq ft (m) 5 5 6 6 0. 46 0.46 0.56 0.56
Water Inlet (top) & Outlet Connection (bottom) inches (cm) 7/8 ODF 1--1/4 MPT 7/8 ODF 1--1/4 MPT
STEAM
Quantity of Rows...fin spacing fins/inch(cm) SeeNote2 1...14 1...14 SeeNote2 1...5.5 1...5.5
Face Area sq ft (m) SeeNote2 6.9 6.9 SeeNote2 0.64 0.64
Water Inlet (top) & Outlet Connection (bottom) inches (cm) SeeNote2 1--1/4 MPT SeeNote2 1--1/4 MPT
LEGEND
FPT = Female Pipe Thread MPT = Male Pipe Thread ODF = Outside Diameter Female
NOTES:
1. Motorsand drives otherthanthosefurnished with unitmust bepurchased separately.Contact yourCarrier Transicoldrepresen-
tative.
2. Accessory heating coil in 004 and 006 units is combination hot water/steam. See hot water data.