Unit Startup

Unit Start-Up Procedures

Daily Unit Start-Up

1.Verify the chilled water pump and condenser water pump starter are in “ON” or “AUTO”.

2.Verify the cooling tower is in “ON” or “AUTO”.

3.Check the oil tank oil level; the level must be visible in or above the lower sight glass. Also, be sure to check the oil tank temperature; normal oil tank temperature before start-up is 140°F to 145°F (60 to 63°C).

Note: The oil heater is energized during the compressor off cycle. During unit operation, the oil tank heater is de-energized.

4.If the chiller is equipped with the free cooling option, ensure that the free cooling option is disabled in the Chiller Settings menu.

5.Check the chilled water setpoint and readjust it, if necessary, in the Chiller Settings menu.

6.If necessary, readjust the current limit setpoint in the Chiller Setpoints menu.

7.Press “AUTO”.

The UCP also checks compressor motor winding temperature, and a start is initiated if the winding temperature is less than 265°F. The chilled water pump relay is energized and evaporator water flow is proven.

Next, the UCP checks the leaving evaporator water temperature and compares it to the chilled water setpoint. If the difference between these values is less than the start differential setpoint, cooling is not needed.

If the UCP determines that the difference between the evaporator leaving water temperature and chilled water setpoint exceeds the start differential setpoint, the unit enters the initiate Start Mode and the oil pump and Refrigerant pump and the condenser water pump are started. If condenser water flow is not proven (flow switch 5S3 does not close) within 4-minutes 15 seconds, the unit is locked out on a MMR Diagnostic.

Oil pressure must be verified within 3 minutes or a MMR diagnostic is generated.

When less than 5 seconds remain on the restart inhibit, the pre-start starter test is conducted on Y-Delta starters. If faults are detected, the unit’s compressor will not start, and a MMR Diagnostic will be generated.

If the compressor motor starts and accelerates successfully, “Unit is Running” appears on the display. At this time the purge unit will start operating on “Automatic” and will continue to operate as long as chiller compressor is running.

Note: Whenever the UCP detects a MMR diagnostic condition during start-up, unit operation is locked out, and manual reset is required before the start-up sequence can begin again. If the fault condition has not cleared, the UCP will not permit restart.

CVHE-SVU01E-EN

85

Page 84 Page 86
Page 85
Image 85
Trane CVHE-SVU01E-ENX39640712050 manual Unit Startup, Unit Start-Up Procedures, Daily Unit Start-Up
Page 84 Page 86

CVHE-SVU01E-ENX39640712050 specifications

The Trane CVHE-SVU01E-ENX39640712050 is a high-efficiency centrifugal chiller designed for commercial and industrial applications. This state-of-the-art unit is engineered to provide reliable cooling performance, energy efficiency, and optimized operational flexibility. It is particularly suitable for large-scale facilities that require significant cooling capacity and robust performance under varying load conditions.

One of the most notable features of the CVHE-SVU01E series is its advanced variable speed drive technology. This technology enables the chiller to adjust its speed according to the cooling demands of the facility, resulting in substantial energy savings. By operating at optimal speeds, this unit reduces power consumption and enhances overall efficiency. This is noteworthy in the context of rising energy costs and increasing sustainability demands across various industries.

Moreover, the CVHE-SVU01E is equipped with Trane’s proprietary Compliant Scroll compressor technology. This innovative compressor design minimizes mechanical losses and increases the efficiency of the chiller system. Additionally, the compressor is specifically designed to handle varying refrigerant flow rates, allowing the chiller to maintain performance even when faced with fluctuating conditions.

Another significant characteristic of this chiller model is its use of environmentally friendly refrigerants, aligning with global regulations aimed at reducing greenhouse gas emissions. This commitment to sustainability ensures that the CVHE-SVU01E not only provides excellent cooling performance but also adheres to contemporary environmental standards.

The unit utilizes an advanced control system that simplifies operation and enhances troubleshooting capabilities. The intuitive interface allows facility managers to monitor performance metrics, optimize operation schedules, and conduct remote diagnostics, significantly reducing costly downtime and maintenance efforts.

Furthermore, the compact and modular design of the CVHE-SVU01E makes it easy to install in various settings. Its durability is ensured through the use of high-quality materials and components, designed to withstand the rigors of demanding environments. With reduced maintenance requirements, facility operators can focus on core business functions without frequent interruptions.

In summary, the Trane CVHE-SVU01E-ENX39640712050 combines cutting-edge technologies and features to deliver exceptional performance, efficiency, and reliability in commercial cooling applications. Its advanced design contributes to reduced energy costs, minimal environmental impact, and greater operational flexibility, making it an excellent choice for organizations seeking sustainable and efficient cooling solutions.
Top Page Image Contents