ACS HE Series, Operation And Instruction Manual

Page: 28 / 83

HE Series Central Chillers • 882.03862.00 • 12/02/2021
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4-12 Electrical Connections
Supply electricity of the voltage, phase, and cycle listed on the serial tag. Total running amps
are also found in the specification tables on pages in the Appendix.
Bring properly sized power leads and ground from a fused disconnect (installed by your
electrician) to the module. Use dual-element fuses in the disconnect switch, sized according
to local electrical regulations. Make sure all electrical connections are tight.
HE -FLA CHART
Model Size Type
Standard Incoming Voltage (FLA)
460 VAC 208VAC 230VAC 380V/60HZ 400V/50HZ 575VAC
HE20 20 TON
RC/WC 41.4 77.3 77.1 54.6 41.5 29.7
HE25 25 TON RC/WC 53.1 117.8 117.6 61.8 50.3 45.6
HE30 30 TON RC/WC 61.6 128.0 127.7 77.8 57.5 54.2
HE40 40 TON RC/WC 70.4 165.3 165.1 80.7 70.6 57.1
HE50 50 TON RC/WC 86.1 194.3 194.1 118.1 86.3 78.7
HE60 60 TON RC/WC 123.7 249.0 248.8 157.0 123.9 112.0
4-13 Initial Set Up

Check the shipping papers against the serial tag to be sure chiller size, type and voltage is
correct for the process that will be controlled. Central chillers are built with a voltage specific
compressor and cannot be re-wired for an alternate voltage.

Check the transformer primary voltage connections to be sure they are configured for the
electrical power you are using. The voltage at the main power connection must read within
plus or minus ten percent (±10%) of the voltage listed on the serial tag. Electrical connections
must conform to all applicable codes.

Connect the main 3 phase incoming power to the unit making certain that line one (1) L1 is
connected to the A phase, line two (2) L2 is connected to the B phase, and line three (3) L3 is
connected to the C phase. Check for proper rotation direction of fan(s) and pump(s). The best
route for the main power wiring is from the floor up to the right side of the enclosure on the
top.

Check that all wire connections are secure and correct.
** Caution**
; FLA Information is based on maximum size amp draw for each electrical
item. Your actual FLA number should be equal or smaller than what is listed. FLA is Based on
maximum, compressor * 1.25, fans, Process Pump, Recirc Pump, Phase Monitor and XFMR.
Important!
Refer to your local electrical requirements for proper feeder conductor
and supply disconnecting sizing. For instance, in the United States refer
to National Electric Code (NEC) Article 430-24 through 430-26, Table
310.15(B)(2)(a)