PKG-SVX029A-EN
25
Table 8. Electrical service sizing data — motors (continued)
Digit 9 - Unit
Voltage
Digit 9 Tonnage Comp 1 Comp 2 Comp 3 Comp 4
Fan FLA
Qty Fans
Misc MCA MOP
208-230/60/3 F 100 83.1 83.1 62.1 62.1 13.5 6.00 2.00 394 477
208-230/60/3 F 110 83.1 83.1 83.1 83.1 13.5 7.00 2.00 450 533
575/60/3 5 20 6.4 6.4 6.4 6.4 5.7 1.00 0.75 34 40
575/60/3 5 25 7.7 7.7 7.7 7.7 5.7 1.00 0.75 39 47
575/60/3 5 30 9.4 9.4 9.4 9.4 5.7 2.00 0.75 52 61
575/60/3 5 35 9.0 9.0 9.4 9.4 5.7 2.00 0.75 51 60
575/60/3 5 40 9.0 9.0 9.0 9.0 5.7 2.00 0.75 50 59
575/60/3 5 45 12.9 12.9 9.0 9.0 5.7 2.00 0.75 59 72
575/60/3 5 50 12.9 12.9 12.9 12.9 5.7 3.00 0.75 73 86
575/60/3 5 55 13.7 13.7 12.9 12.9 5.7 3.00 0.75 75 88
575/60/3 5 60 14.5 14.5 13.7 13.7 5.7 4.00 0.75 84 98
575/60/3 5 65 14.5 14.5 14.5 14.5 5.7 4.00 0.75 85 100
575/60/3 5 70 19.2 19.2 14.5 14.5 5.7 4.00 0.75 96 115
575/60/3 5 75 24.0 24.0 14.5 14.5 5.7 4.00 0.75 107 131
575/60/3 5 85 24.0 24.0 19.2 19.2 5.7 5.00 0.75 122 146
575/60/3 5 90 24.0 24.0 24.0 24.0 5.7 5.00 0.75 131 155
575/60/3 5 100 27.1 27.1 24.0 24.0 5.7 6.00 0.75 144 171
575/60/3 5 110 27.1 27.1 27.1 27.1 5.7 7.00 0.75 156 183
Notes:
1. MCA: Minimum Circuit Ampacity is 125 percent of the largest compressor RLA or Drive input current, plus 100 percent of the other compressor (s) RLA, plus the sum
of the condenser fan RLA, plus any other load rated at 1 AMP or more.
2. Maximum Breaker Overcurrent Protection (MOP): 225 percent of the largest compressor RLA or VSD drive Input, plus 100% of the other compressor(s) RLA, plus the
sum of the condenser fan Motor/Drive FLA, plus any other load rated at 1 AMP or more.
3. Recommended disconnect switch: 110 percent to 115 percent of the sum of the RLA of the compressors, VSD drive input, fan motor/drive, and controls FLA.
4. RLA: Rated in accordance with UL standard 1995.
5. Local codes may take precedence.
6. Fix speed compressor are across the line starting, the VSD compressors are controlled by VSD drive. Compressors will never start simultaneously.
7. Voltage utilization range is ±10 percent.
Static Pressure Transducer
Installation (VAV Units Only)
Supply air static pressure controls the ECM fans. A static
pressure bulkhead connector ships separate in control
panel for field installation in the supply air duct work.
Installer is responsible for providing pneumatic tubing.
Transducer Inlet Location
Place bulkhead connector in an area of ductwork that will
provide an average and evenly distributed airflow pattern.
Use the following guidelines to determine an appropriate
installation location.
1. Locate static bulkhead connector approximately 2/3 to
3/4 the way down longest duct run, in an area
approximately 10 duct diameters downstream and 2
duct diameters upstream of major interferences, turns,
or changes in duct diameter.
2. When installing pneumatic tubing between head
assembly and transducer in control panel, do not
exceed 250 feet for 1/4-inch OD tubing or 500 feet for
3/8-inch OD tubing.
Installing the Transducer
Use the following procedure to properly install the static
pressure transducer:
1. Connect the pneumatic tubing from the sensing head to
the push-on tubing connection in the control panel. Use
a plastic static pickup tubing. Do not exceed 250 feet
for 1/4-inch OD tubing or 500 feet for 3/8-inch OD
tubing.
Transducer inside control panel picks up low side or
reference pressure.
Note: If plastic tubing pulls away from a connection, trim it
back before replacing it on the fitting. Stretched
tubing may leak and cause faulty control.
Installation - Electrical
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