These installation instructions cover the installation of the matched systems listed in table 2.

Parts List

Indoor Unit

The following items are included with the indoor unit:

Table 1 – Installation Materials

Part No.

Name of Part

Qty.

1

Side Panels

2

2

Hex Head Bolts

4

3

Mounting Bracket

2

4

 

Pistons

1

5

Installation Template

1

6

Adapter Tubes

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A09532

Fig. 6 - Hanging Fan Coil Unit

Outdoor Unit

The following items are included with the outdoor unit:

A09536

Fig. 7 - 38HDR018-036

 

 

 

 

A09537

 

Fig. 8 - 38QRR018-036

 

 

 

 

 

 

Model

Filter Drier

Piston

Pistons

Flare

Cap

Connector

 

 

 

38HDR

n

---

---

---

38QRR

n

n

n

n

Table 2 – Matched Systems

System

Nominal

Outdoor Unit

Indoor Unit

 

Type

Capacity

 

 

 

 

 

 

 

 

 

 

 

 

018

38HDR018

---3

40QAC024--- --- ---

3

 

*

 

 

 

 

 

 

 

 

 

 

 

 

Cooling

024

38HDR024--- ---

---3

40QAC024--- --- ---

3

 

 

 

 

 

036

38HDR036--- --- ---

3/5/6

40QAC036--- --- ---

3

 

030

38HDR030--- ---

---3

40QAC036--- --- ---

3

 

 

 

 

 

 

 

048

38HDR048--- --- ---

3/5/6

40QAC048--- --- ---

3

 

 

 

 

 

 

 

060

38HDR060--- --- ---

3/5/6

40QAC060--- --- ---

3

 

 

 

 

 

 

 

018

38QRR018--- ---

---3

40QAQ024--- --- ---

3

 

 

 

 

 

 

Pumps

024

38QRR024--- ---

---3

40QAQ024--- --- ---

3

 

 

 

 

 

030

38QRR030

---3

40QAQ036--- ---

3

 

 

 

 

 

 

 

Heat

036

38QRR036--- --- ---

3/5/6

40QAQ036--- --- ---

3

 

 

 

 

 

048

38QRR048--- --- ---

3/5/6

40QAQ048--- --- ---

3

 

 

 

 

 

 

 

060

38QRR060--- --- ---

3/5/6

40QAQ060--- --- ---

3

 

 

 

 

 

 

*Units must be configured for 1---1/2 ton operation. Refer to instructions on page 9.

SYSTEM REQUIREMENTS

Clearances

Allow sufficient space around the indoor and outdoor unit for proper airflow circulation and servicing. Refer to Fig. 1 through Fig. 5 for minimum required clearances.

Piping: Piping and insulation is field supplied.

Piping Lengths

The minimum length between the indoor and outdoor units is 10 ft (3 m). Refer to table 3 for the maximum lengths allowed.

Table 3 – Maximum Refrigerant Line Lengths

Unit

Max Line

Max Elevation (ID

Max Elevation (OD

Size

Length ft(m)

over OD) ft(m)

over OD) ft(m)

18K

200 (61)

65 (19.8)

200 (61)

24K

200 (61)

65 (19.8)

200 (61)

30K

200 (61)

65 (19.8)

200 (61)

36K

200 (61)

65 (19.8)

200 (61)

48K

200 (61)

65 (19.8)

200 (61)

60K

200 (61)

65 (19.8)

200 (61)

Note:For lengths greater than 25 ft (7.6 m), refer to the Duct Free Long Line Guide.

Pipe Sizes

Refer to table 4 for pipe sizes.

Table 4 – Pipe Sizes

PIPE SIZES (in)

Unit Size

Liquid Phase

 

Vapor

38HDR

 

38QRR

 

 

 

18

3/8

5/8

 

5/8

24

3/8

5/8

 

5/8

30

3/8

3/4

 

3/4

36

3/8

3/4

 

3/4

48

3/8

7/8

 

3/4

60

3/8

7/8

 

3/4

Note:On heat pumps, both lines need to be insulated using at least 1/2 inch closed foam insulation.

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

7

Page 6 Page 8
Page 7
Image 7
Carrier 40QAC installation instructions System Requirements, Parts List
Page 6 Page 8

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.
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