Complete Indoor Piping

The piping to the indoor unit can be routed from the back, side and top. If the unit is being piped from the top or the side see note below.

1.On heat 40QAQ024 – 048, the cooling piston (indoor) is shipped in the factory installed metering device with the in- door unit. Use Table 6 to verify that you have the correct piston size for the system being installed.

2.Run the line set and the control wiring from the outdoor to the indoor unit through the hole in the wall. Keep the piping general guidelines in mind.

3.Cut the liquid and suction line to the correct length using a tube cutter.

4.Remove the flare nuts from the indoor piping connections. Install them onto the liquid and suction lines and make flare connections.

5.Apply a small amount of refrigerant oil to the flare connec- tion and tubing.

6.Align the tubing with the refrigerant connections on the in- door unit.

7.Tighten the flare nut and finish the installation using two wrenches as shown in Fig. 22.

NOTE: When piping is being routed from the top or side, two pipe adaptors are supplied with the unit. Flare the pipe adaptors to the indoor unit connections and sweat the other ends to the line set.

Connect Condensate Drain Line

Observe all local sanitary codes when installing condensate drains. Refer to Fig. 23 for drain pipe connection from indoor unit.

1.Use hard polyvinyl chloride (PVC) pipe material with nom- inal ID of 3/4 in. to connect at drain line. Use pipe insula- tion 1/4 in. thick, such as Armaflex insulation, on exposed piping inside the conditioned space.

2.To insure regular flow of condensate water, the drain pipe should be pitched toward an open drain or sump at a down- ward slope of at least 1/4 in. per ft.

3.If the drain piping is routed through the side of the unit, at- tach a field fabricated piece of sheet metal to support the drain pipe as shown in Fig. 23.

4.Attach drain pipe with nylon wire tie passing through hole as shown in Fig. 23.

40QAC/38HDR -- 40QAQ/38QRR

(Field Fabricated)

A07354

Fig. 22 - Tighten Flare Nut

8.Insulate both connections on the 38QRR and the liquid line connection on the 38HDR units.

A09534

Fig. 23 - Routing Drain Piping

NOTE: Do not fasten nylon wire ties tight enough to deform the insulation, as this affects performance.

5. Install an external trap at the end of the condensate line.

NOTE: Should the installation require one, a condensate pump may be ordered as a fields-installed accessory. It is easier to install pump before hanging the unit.

40QAC specifications

The Carrier 40QAC is a standout product in the realm of commercial air conditioning systems. This air-cooled chiller is designed to meet a variety of cooling needs while ensuring energy efficiency and reliability. One of the most notable features of the 40QAC is its advanced scroll compressor technology, which is engineered to provide consistent performance with reduced noise levels. This makes it an ideal choice for applications where minimizing sound pollution is crucial, such as in urban settings or near sensitive environments.

In terms of energy efficiency, the 40QAC boasts impressive ratings, with a high coefficient of performance (COP) that helps to lower operational costs and reduce environmental impact. Its design integrates various energy-saving features, including variable speed fans and a robust control system that optimizes performance based on real-time demand. This adaptability allows the chiller to maintain comfort levels while consuming less energy than traditional models.

The 40QAC is equipped with a microprocessor-based control system that simplifies operation and enhances user experience. This intelligent control interface allows operators to monitor performance metrics, adjust settings, and troubleshoot any issues remotely, increasing overall system reliability. The system is also designed to be compatible with building management systems, which facilitates seamless integration into existing infrastructure.

Another prominent characteristic of the Carrier 40QAC is its robust construction. Built with high-quality materials, it offers excellent durability and longevity, even in challenging environmental conditions. The unit also incorporates features to streamline maintenance, such as accessible component layout and easy-to-remove panels, ensuring that downtime for servicing is minimized.

Safety is another critical aspect of the Carrier 40QAC’s design. It’s engineered with numerous safety protocols to protect against overheating, overpressure, and other potential hazards, guaranteeing both system integrity and peace of mind for operators.

Overall, the Carrier 40QAC is a versatile and efficient solution for commercial cooling needs. With its technological advancements, energy-saving features, and robust design, it stands out as a reliable choice for businesses looking to balance performance with sustainability. The 40QAC not only promises efficient cooling but does so while aligning with the growing demand for eco-friendly solutions in today's marketplace.