System Pre-Start Procedures

Use the checklist provided below in conjunction with the “General Unit Requirement” checklist” to ensure that the unit is properly installed and ready for operation. Be sure to complete all of the procedures described in this section before starting the unit for the first time.

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.

[ ] Turn the field supplied disconnect switch, located upstream of the unit, to the “Off” position.

[ ] Turn the “System” selection switch (at the Remote Panel) to the “Off” position and the “Fan” selection switch (if applicable) to the “Auto” or “Off” position.

[ ] Check all electrical connections for tightness and “point of termination” accuracy.

[ ] Verify that the condenser airflow will be unobstructed.

[ ] Check the condenser fan blades. Ensure they rotate freely within the fan orifices and are securely fastened to the fan motor shaft.

[ ] Disable the compressor (s) by unplugging the reset relay for each circuit. Refer to the unit-wiring diagram that sipped with the unit.

NOTICE

Compressor Damage!

Do not allow liquid refrigerant to enter the suction line. Excessive liquid accumulation in the liquid lines could result in compressor damage.

[ ] Verify that all compressor service valves, discharge service valves, and liquid line service valves is back seated on each circuit.

COMPRESSOR SERVICE VALVES MUST BE FULLY OPENED BEFORE START-UP (SUCTION, DISCHARGE, LIQUID LINE, AND OIL LINE).

[ ] Remove the protective plastic coverings that shipped over the compressors.

[ ] Check the compressor oil levels. The oil level in each manifold set of compressor sight glasses should be equally 1/2 to 3/4 full when they are “Off”.

[ ] Pack Stock Units;

Two low pressure switches are installed at the factory. However, only one is wired into the control circuit. This is to facilitate either an EVP chiller application or an air over evaporator application. Before starting the system, verify that the correct pressure switch for the application is connected to the control circuit. Refer to Table 13 for the pressure control settings and the unit wiring diagram, that shipped with the unit, for the appropriate connections.

[ ] Check the condenser coils. They should be clean and the fins should be straight. Straighten any bent coil fins with an appropriate sized fin comb.

[ ] Inspect the interior of the unit for tools and debris.

EVP Chiller Applications

[ ] Fill the chilled water system.

[ ] Vent the chilled water system at the highest points in the system. Brazed plate heat exchangers should be purged with water through the field provided vent ports to displace any air in the heat exchanger. Shell and tube heat exchanges (chiller barrels) should have the vent plug removed

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Trane RAUC-C60, RAUC-C50, RAUC-C30, RAUC-C20, RAUC-C40, RAUC-C25 manual Compressor Damage, EVP Chiller Applications
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RAUC-C20, RAUC-C40, RAUC-C25, RAUC-C30, RAUC-C60 specifications

Trane, a leader in HVAC solutions, offers innovative air conditioning units designed for superior performance and energy efficiency. Among their advanced products are the Trane RAUC-C30, RAUC-C20, RAUC-C40, RAUC-C60, and RAUC-C50, which cater to various cooling and heating needs in residential and commercial applications.

The RAUC-C series showcases cutting-edge technology, ensuring effective climate control while minimizing energy consumption. These units are equipped with variable-speed compressors, allowing for precise cooling capacities and reduced noise levels during operation. This feature ensures that users can enjoy optimal comfort without the disruptive noise often associated with traditional HVAC systems.

One of the standout technologies used in the RAUC-C series is Trane’s advanced inverter technology. This system intelligently adjusts the compressor speed based on real-time cooling demands, enhancing efficiency and prolonging the unit's lifespan. Additionally, the units come with high SEER (Seasonal Energy Efficiency Ratio) ratings, making them an excellent choice for those looking to lower their energy bills while maintaining a comfortable indoor environment.

The RAUC-C series units are designed with durability in mind. Constructed with robust materials, these air conditioning systems are built to withstand varying weather conditions. Their compact and lightweight design makes installation straightforward, and they can fit seamlessly into a variety of spaces, from residential homes to commercial buildings.

Another key characteristic of the RAUC-C series is their eco-friendly refrigerant, which meets strict environmental regulations. This not only supports sustainability efforts but also ensures efficient cooling performance. Furthermore, their smart technology capabilities enable integration with modern smart home systems, allowing users to manage their cooling settings remotely for added convenience.

Trane's focus on user-friendly interfaces makes these units easy to operate. The intuitive control systems allow users to customize their cooling preferences easily, providing flexibility to adapt to individual comfort needs.

Overall, the Trane RAUC-C30, RAUC-C20, RAUC-C40, RAUC-C60, and RAUC-C50 stand out for their energy efficiency, advanced technology, durability, and user-focused design. These features make them reliable choices for anyone seeking efficient and effective heating and cooling solutions.
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