Electrical Requirements, Ground Wire

electrical

Installation requirements

WARNING

Ground Wire!

All field-installed wiring must be completed by qualified personnel. All field-installed wiring must comply with NEC and applicable local codes. Failure to follow this instruction could result in death or serious injury.

WARNING

Grounding Required!

Follow proper local and state electrical code on requirements for grounding. Failure to follow code could result in death or serious injury.

Electrical Requirements

Follow these guidelines, referring to unit wiring diagrams and supply power dimensional information to ensure correct electrical requirements at the installation site. Reference supply power wiring locations on unit submittals or in the “Dimensions andWeights” section. Specific unit wiring diagrams are provided on each unit. Use these diagrams for connections or trouble analysis.

WARNING

Hazardous voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury.

SXIH-SVX01B-EN

Supply PowerWiring

It is the installer’s responsibility to provide power supply wiring to the unit. Wiring should conform to NEC and all applicable code requirements.To ensure the unit supply power wiring is properly sized and installed, follow the guidelines below:

1.Verify the power supply available is compatible with the unit nameplate ratings.The supply power must be within 10% of the rated voltage listed on the unit nameplate.

2.Reference the electrical data inTable I- ED-1. Protect the electrical service from over current and short circuit conditions in accordance with NEC requirements. Size protection devices according to the electrical date on the unit nameplate.

3.If using a field-supplied disconnect, install it at or near the unit in accordance with NEC. Do not mount a field-supplied disconnect on the unit. Reference the electrical service entrance location on unit submittals.

4.Complete the unit power wiring connections onto either the main terminal block or the field-provided non-fused disconnect switch.

5.Provide proper unit grounding in accordance with local and national codes.

Electrical Data Calculations

RLA = Rated Load Amps

Compressor LRA = Locked Rotor Amps

Fan Motor LRA = Locked Rotor Amps,

N.E.C.Table 430 - 151

FLA = Full Load Amps, N.E.C.

Table 430 - 150

Voltage utilization range is ±10 percent

Determination of Minimum Circuit Ampacity (MCA)

MCA = 1.25 x largest motor amps (FLA or RLA) + the sum of the remaining motor amps.

Determination of Maximum Fuse Size (MFS)

MFS = 2.25 x largest motor amps (FLA or RLA) + the sum of the remaining motor amps.

If the rating value determined does not equal a standard current rating of over current protective device, use the next lower standard rating for the marked maximum rating.

WARNING

Live electrical components! During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.

Voltage Imbalance

Voltage imbalance on three-phase systems can cause motor overheating and premature failure. Maximum allowable imbalance is 2.0%, and the readings used to determine it must be measured at the compressor terminals.

Voltage imbalance is defined as 100 times the sum of the division of the three voltages from the average voltage. If, for example, the three measured voltages are 221, 230, 227, the average would be:

(221+230+227) = 226 volts 3

The percentage of voltage imbalance is then:

100*(226-221) = 2.2% 226

In this example, 2.2 percent imbalance of more than 2.0 percent exists, be sure to check the voltage at the unit disconnect and terminal block switch. If an imbalance at the unit disconnect switch does not exceed 2.0 percent, the imbalance is caused by faulty wiring within the unit. Be sure to conduct a thorough inspection of the unit electrical wiring connections to locate the fault, and make any repairs

necessary.13

SCIH specifications

The Trane SCIH, or Smart Communicating Indoor Unit, is a smart HVAC solution designed to provide both efficiency and comfort in commercial and residential spaces. This innovative system represents a significant advancement in climate control technology, integrating state-of-the-art features that cater to modern demands for convenience, connectivity, and sustainability.

One of the standout features of the Trane SCIH is its advanced communication capability. The system utilizes Trane’s proprietary technology to facilitate seamless communication between various HVAC components, enabling real-time monitoring and adjustments. This integration ensures optimal performance by allowing end-users to manage their climate control settings efficiently from a central location or through a smartphone app.

The SCIH is also designed for high energy efficiency. It incorporates variable speed technology that adjusts the compressor and fan speeds according to the specific heating or cooling needs of the space. This not only reduces energy consumption but also minimizes fluctuations in temperature, creating a more comfortable indoor environment. Additionally, the unit's Energy Efficiency Ratio (EER) and Seasonal Energy Efficiency Ratio (SEER) ratings often exceed industry standards, making it an eco-friendly choice for sustainable building practices.

Another characteristic of the Trane SCIH is its compact and versatile design. The unit is engineered to fit in tight spaces, making it suitable for various building types, including retrofits in older structures. Its sleek design enhances aesthetic appeal without compromising performance, a key consideration for both commercial and residential applications.

Safety and ease of use are also priority features of the SCIH. The model includes built-in diagnostics that can identify issues early, enabling prompt maintenance and reducing the risk of system failures. User-friendly interfaces provide intuitive controls, making it accessible for users of all technical backgrounds.

Overall, the Trane SCIH embodies the convergence of technology, comfort, and efficiency. Its smart features, including advanced communication, variable speed technology, and compact design, position it as a leading solution in the HVAC market. This unit not only meets the needs of the present but is also prepared to adapt to future energy standards and user expectations, reinforcing Trane’s commitment to innovative climate solutions.