Compressor Mounting

SIZES 030-090 — Each compressor is supported on 4 springs. The springs are compressed for shipment. After the unit is installed, the holddown nuts need to be loosened for nor- mal operation. See Fig. 55 for compressor mounting details. Loosen each bolt using nut indicated until the flatwasher (3/8-in.) can be moved with finger pressure. Do not remove the locknuts. Check each compressor mounting to ensure all 4 springs have been loosened properly.

SIZE 105 — Compressors are mounted on rails and held down by rail bolts during shipment. After unit is installed, loos- en the rail bolts to allow the rails and compressors to float free- ly on the springs located under the rails. See Fig. 56 and 57.

Gas Piping — Unit is equipped for use with natural gas only. Installation must conform with local building codes, or in the absence of local codes, with the National Fuel Gas Code (NFGC), ANSI Z223.1.

A 1/8-in. NPT tapping plug, accessible for test gage connec- tion, must be field installed immediately upstream of gas sup- ply connection to unit, but after manual gas valve. See Fig. 58. Natural gas pressure at unit gas connection must not be less than 5 in. wg or greater than 13 in. wg.

Size gas supply piping for 0.5 in. wg maximum pressure drop. Do not use supply pipe smaller than unit gas connection.

CAUTION

Disconnect gas piping from unit when leak testing at pres- sures greater than 0.5 psig. Pressures greater than 0.5 psig will cause gas valve damage resulting in a hazardous con- dition. If gas valve is subjected to pressure greater than 0.5 psig, it must be replaced.

Optional Staged Gas Control — The 48Z030-105 large rooftop units may be ordered with an optional factory- installed staged gas control system that monitors heating opera- tion of the rooftop. The control system is composed of several components as listed in sections below. Table 17 shows 48Z Series staged gas implementation.

Refer to the Unit Controls and Troubleshooting book for in- formation on configuring staged gas control.

Fig. 56 — Front View of Compressor

Mounting Rail Assembly — Size 105 Units

COMPRESSOR MOUNTING FOOT

NUT

COMPRESSOR MOUNTING RAIL

Fig. 57 — Rear View of Compressor

Mounting Rail Assembly — Size 105 Units

NOTE: All dimensions are in inches (mm).

Fig. 55 — Compressor Mounting (Sizes 030-090)

Z6, 48ZG, 48ZT, ZW, Z8075-105 specifications

The Carrier Z8075-105, Z6, 48ZG, 48ZT, and ZW series of HVAC systems represent a significant advancement in heating, ventilation, and air conditioning technology. These units are specifically designed for enhanced energy efficiency, superior performance, and ultimate comfort in residential and commercial spaces.

The Carrier Z8075-105 model stands out due to its impressive cooling and heating capabilities. It features a high Seasonal Energy Efficiency Ratio (SEER) and Heating Seasonal Performance Factor (HSPF), allowing for reduced energy consumption and lower utility bills. This model is equipped with advanced inverter technology that enables variable speed operation, significantly reducing noise levels and providing consistent temperature control.

Turning to the Z6 model, it is engineered for both robustness and reliability. It incorporates a modular design that allows for easy installation and maintenance. One of its key features is the use of innovative insulation materials that minimize sound levels, making it ideal for noise-sensitive environments. Furthermore, the Z6 series comes with a smart control system that allows users to monitor and adjust settings remotely, further optimizing energy usage.

The 48ZG and 48ZT models are designed with durability in mind. They utilize a fully enclosed compressor system that protects critical components from environmental damage. These models also boast enhanced dehumidification capabilities, making them suitable for humid climates. Equipped with advanced filtration systems, they improve indoor air quality by removing allergens and particulates effectively.

Carrier's ZW series exemplifies cutting-edge technology with its dual fuel capability, which allows the system to switch between a heat pump and a gas furnace, depending on outdoor temperatures. This feature maximizes energy savings while ensuring a comfortable indoor climate year-round. The ZW models also support integration with smart home systems, providing seamless control through mobile apps.

Collectively, these Carrier models are designed to meet the diverse needs of today’s consumers, offering a blend of efficiency, comfort, and intelligent control. Their ability to adapt to various environmental conditions while maintaining optimal performance makes them a leading choice in the HVAC market. With a focus on sustainability, these systems not only offer significant energy savings but also contribute to reducing the carbon footprint. As technology continues to evolve, Carrier remains at the forefront, delivering reliable, innovative HVAC solutions.