LEGEND

TXV Ð Thermostatic Expansion Valve Liquid

Liquid/Vapor

Vapor

*The FX compressor and the gear have a water cooled oil cooler.

Fig. 3 Ð Refrigeration, Cycle

External Gear Lubrication Cycle (Refer to Item numbers shown in Fig. 5) Ð Oil reservoir is con- tained in the gear base. The external gear oil pump is mounted below the gear with the cooler/®lter. Oil is pumped through an oil cooler/®lter to remove heat and any foreign particles. A portion of the oil is directed to the gear bearings and gear mesh spray. The remainder is bypassed to the sump. The bear- ing and transmission oil returns directly to the reservoir to complete the cycle.

Oil may be charged into the external gear oil reservoir as described in the section, External Gear Pre-Start Checks, page 51. Observe the oil level in the oil level glass (Item 4) on the reservoir wall.

A motor driven oil pump (Item 10) discharges oil to the oil cooler/®lter (Item 12). The pump has an internal pressure regulator to protect the pump in the event of an obstruction downstream. Water ¯ow through the oil cooler is manually adjusted by a plug valve (Item 14) to maintain the oil at an operating temperature of approximately 130 F (54 C).

Upon leaving the cooler section (Item 13) of the oil cooler/ ®lter, the oil is ®ltered (Item 11) and is directed to the pres- sure control valve (Item 7). Before entering the pressure control valve, the oil pressure (Item 16) and temperature (Item 8) are monitored by the PIC.

A portion of the oil then lubricates the gear bearings (Item 2). Another portion is directed through an ori®ce (Item 5) to the gear mesh spray (Item 3) to lubricate the gear mesh (Item 1) during operation. Oil from both circuits re- turns by gravity to the reservoir.

STARTERS

All starters, whether supplied by Carrier or the customer, must meet Carrier Starter Speci®cation Z-375. This speci- ®cation can be obtained from a Carrier Sales Representa- tive. The purpose of this speci®cation is to ensure the com- patibility of the starter and the chiller. Many styles of compatible starters are available, including solid-state , auto-transformer, full-voltage, and, in the case of low-voltage main power sup- ply, wye-delta closed transition.

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Carrier 17EX specifications Starters, Refrigeration, Cycle
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17EX specifications

The Carrier 17EX is recognized as an innovative air conditioning solution that combines efficiency with advanced technology. This model is designed to meet the increasing demands of residential and commercial cooling needs while maintaining environmental consciousness.

One of the standout features of the Carrier 17EX is its impressive Seasonal Energy Efficiency Ratio (SEER) rating. With a SEER rating that often exceeds 17, this unit ensures optimized energy consumption, significantly lowering operational costs for users. The incorporation of advanced compressor technology allows the system to adjust its cooling output based on the specific needs of the environment, thus providing both comfort and energy savings.

The Carrier 17EX utilizes a variable-speed inverter-driven compressor that enhances its performance and adaptability. This technology allows the air conditioning unit to operate at different speeds, intelligently adjusting to changing load conditions. As a result, the system runs more efficiently and quietly, providing a more consistent comfort level without the abrupt temperature swings associated with traditional units.

In addition to efficiency, the Carrier 17EX also prioritizes reliability and durability. The unit comes with a robust cabinet that protects the components from weather elements, ensuring longevity and consistent performance. The innovative design integrates a corrosion-resistant finish and robust insulation, which further enhances the unit's resilience in various environmental conditions.

For users concerned about indoor air quality, the Carrier 17EX includes advanced filtration systems designed to capture allergens and airborne particles. This feature is particularly beneficial for individuals with respiratory issues, ensuring that the air circulated within the space is clean and healthy.

Moreover, the Carrier 17EX is equipped with smart technology capabilities, allowing users to control their systems remotely through smartphones or other smart devices. This connectivity not only provides convenience but also empowers homeowners to optimize their energy use by adjusting settings on the fly, ensuring efficient operation even when they are away from home.

Overall, the Carrier 17EX stands out in the marketplace for its exceptional energy efficiency, advanced technology, and commitment to providing reliable and effective cooling solutions. Its combination of modern features makes it a preferred choice for those looking to enhance comfort while being mindful of energy consumption and environmental impact.
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