Installation - Electrical - Trane CITY RTSF Series Manual

Water-cooled liquid chillers with helical rotary compressors

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Table Of Contents

Table of Contents

General Recommendations

For proper electrical component operation, do not locate the unit in areas exposed to dust, dirt, corrosive fumes,

or excessive humidity. If any of these conditions exist, corrective action must be taken.

When reviewing this manual keep in mind:

• All ﬁ eld-installed wiring must be in accordance with local regulations, CE directives and guidelines. Be sure to

satisfy proper equipment grounding requirements according to CE.

• The following standardized values - Maximum Amps - Short Circuit Amps - Starting Amps are displayed on unit

nameplate.

• All ﬁ eld-installed wiring must be checked for proper terminations, and for possible shorts or grounds.

Note: always refer to wiring diagrams shipped with chiller or unit submittal for speciﬁ c electrical schematic and

connection information.

Important: to prevent control malfunctions, do not run low voltage wiring (<30V) in conduit with conductors carrying

more than 30 volts.

WARNING! Hazardous Voltage with Capacitor!

Disconnect all electric power, including remote disconnects and discharge all motor start/run and AFD (Adaptive

Frequency™ Drive) capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot

be inadvertently energized.

• For variable frequency drives or other energy storing components provided by Trane or others, refer to the

appropriate manufacturer's literature for allowable waiting periods for discharges capacitors. Verify with an

appropriate voltmeter that all capacitors have discharged.

• DC bus capacitors retain hazardous voltages after input power has been disconnected. Follow proper

lockout/tagout procedures to ensure the power cannot be inadvertently energized.

After disconnecting input power, wait twenty (20) minutes for units which are equipped with variable frequency drive

(0V DC) before touching any internal components.

Failure to follow these instructions could result in death or serious injury.

For additional information regarding the safe discharge of capacitors, see "Adaptive Frequency™ Drive (AFD3)

Capacitor Discharge" .

• However, for any intervention in the AFD, the indicated time on the label of the AFD must be respected.

Before installing the chiller with AFD, the user must evaluate the potential electromagnetic problems in the

surrounding area. The following should be considered:

the presence above , below and adjacent to the unit of for example: welding equipment or other power cables,

control cables or signaling and telephone cables;

receivers and transmitters, radio and television;

computer and other control equipment ;

the critical safety equipment, eg protection of industrial equipment ;

the health of neighboring persons, for example, use of pacemakers or appliances against deafness ;

the immunity of other equipment in the environment. The user must ensure that the other materials used in the

environment are compatible. This may require additional protection measures ;

If electromagnetic disturbances are detected, it shall be the responsibility of the user to resolve the situation.

In any case, the electromagnetic interferences have to be reduced until they are no longer troublesome.

All wiring must comply with national electric regulations. Minimum circuit ampacities and other unit electrical data

is on the unit nameplate. See the unit order speciﬁ cations for actual electrical data. Speciﬁ c electrical schematics and

connection diagrams are shipped with the unit.

Do not allow conduit to interfere with other components, structural members or equipment. Control voltage (110V)

wiring in conduit must be separate from conduit carrying low voltage (<30V) wiring. To prevent control malfunctions,

do not run low voltage wiring (<30V) in conduit with conductors carrying more than 30V.

RLC-SVX023B-GB