Split System Models

7.5Centrifugal Air-Cooled Condensing Units

7.5.1Installing the Indoor Condensing Unit

Refer to drawings for unit dimensions and component locations.

! WARNING

Risk of structure collapse. Can cause equipment damage, injury or death.

Before beginning installation, make sure that the supporting roof structure is capable of supporting the weight of the unit(s) and the accessories during installation and service. (See Table 28 - Indoor centrifugal condensing unit.)

Be sure to securely anchor the top ends of the suspension rods. Make sure all nuts are tight.

The indoor condensing unit is usually mounted above the ceiling and must be securely mounted to the roof structure. The ceiling and ceiling supports of existing buildings may require reinforcements. Be sure to follow all applicable codes. Use field-supplied threaded suspension rods and

3/8"-16 factory hardware kit.

Recommended clearance between ceiling grids and building structural members is unit height plus three inches.

Install the four field-supplied rods by suspending them from suitable building structural members. Locate the rods so that they will align with the four mounting holes in the flanges that are part of the unit base.

Using a suitable lifting device, raise the unit up and pass the threaded rods through the four mount- ing holes in the flanges that are part of the unit base.

Attach the threaded rods to the unit flanges using the supplied nuts and grommets. (See Figure 23 - Detail of ceiling hanging bracket, Threaded Rod and Hardware Kit Installation). The rubber grommets provide vibration isolation.

1.Use the plain nuts to hold unit in place. Adjust these nuts so that the weight of the unit is supported evenly by the four rods, does not rest on the ceiling grid, and is level.

NOTE

The units must be level in order to operate properly.

2. Use the Nylock nuts to “jam” the plain nuts.

Table 28 Indoor centrifugal condensing unit

Model

Net Weight

 

 

60 Hz

50 Hz

lb (kg)

 

 

 

MC_65A

MC_64A

449 (204)

 

 

 

MC_69W

MC_68W

282 (128)

 

 

 

48

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Liebert ITR installation manual Centrifugal Air-Cooled Condensing Units, Installing the Indoor Condensing Unit, MC69W MC68W

ITR specifications

The Liebert ITR is an advanced precision cooling unit designed to maintain optimal temperature and humidity levels in mission-critical environments. Engineered for high-performance applications, it is particularly suitable for data centers, telecommunications facilities, and other spaces that require precise climate control to ensure uninterrupted operation of sensitive equipment.

One of the main features of the Liebert ITR is its modular design. This allows for scalability and flexibility, enabling users to customize the system based on their specific cooling needs. The unit can be configured in various sizes and cooling capacities, making it suitable for both small server rooms and large data centers. This adaptability is crucial for organizations that anticipate growth and require an efficient cooling solution that can evolve with their infrastructure.

The Liebert ITR incorporates state-of-the-art technologies to enhance performance and energy efficiency. Among these technologies is the use of a variable speed compressor that adjusts its speed based on the cooling load. This capability not only improves energy efficiency but also significantly reduces operational costs by minimizing electricity consumption when cooling demands fluctuate.

Additionally, the unit features advanced control systems that provide intelligent monitoring and management of temperature and humidity levels. These systems can integrate seamlessly with building management systems (BMS) and can be operated remotely, providing users with real-time insights into the performance of the cooling system. Such connectivity ensures quick identification and resolution of potential issues, thereby reducing downtime and maintaining optimal conditions for critical equipment.

The Liebert ITR utilizes eco-friendly refrigerants, contributing to reduced environmental impact while ensuring compliance with regulatory standards. The unit's design also emphasizes reliability, featuring robust construction and redundant components that enhance longevity and minimize the likelihood of failures.

Furthermore, the Liebert ITR is equipped with advanced filtration systems that maintain air quality by reducing particulate matter and contaminants, ensuring that the atmosphere within data centers is not only cool but also clean—critical for the longevity of sensitive electronic equipment.

Overall, the Liebert ITR is characterized by its innovative design, energy-efficient operation, and comprehensive control capabilities, making it an ideal choice for businesses looking to safeguard their critical infrastructure from overheating and humidity. As climate control becomes increasingly important in the digital age, the Liebert ITR stands out as a reliable solution for maintaining optimal environmental conditions.