Table 7A Ð Refrigerant Piping Requirements, 38AH044-104 Dual-Circuit Units Ð 50 Hz

 

 

 

 

 

 

 

 

TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE Ð FT (M)

 

 

 

 

UNIT

 

15-25

 

25-50

 

50-75

 

75-100

 

100-150

 

150-200

 

38AH

(4.6-7.6)

(7.6-15.2)

(15.2-22.9)

(22.9-30.5)

(30.5-45.7)

(45.7-61.0)

 

 

 

L

 

S

L

 

S

L

 

S

L

 

S

L

 

S

L

 

S

044

 

Ckt A

5¤8

 

13¤8

7¤8

 

15¤8

7¤8

 

15¤8

7¤8

 

21¤8

7¤8

 

21¤8

7¤8

 

21¤8

 

Ckt B

5¤8

 

13¤8

7¤8

 

15¤8

7¤8

 

15¤8

7¤8

 

21¤8

7¤8

 

21¤8

7¤8

 

21¤8

 

 

 

 

 

 

 

 

054

 

Ckt A

5¤8

 

13¤8

7¤8

 

15¤8

7¤8

 

15¤8

7¤8

 

21¤8

7¤8

 

21¤8

7¤8

 

21¤8

 

Ckt B

7¤8

 

15¤8

7¤8

 

15¤8

7¤8

 

21¤8

7¤8

 

21¤8

11¤8

 

21¤8

11¤8

 

25¤8

 

 

 

 

 

 

 

 

064

 

Ckt A

7¤8

 

15¤8

7¤8

 

15¤8

7¤8

 

21¤8²

7¤8

 

21¤8²

1 1¤8

 

21¤8²

1 1¤8

 

25¤8**

 

Ckt B

7¤8

 

15¤8

7¤8

 

21¤8

7¤8

 

21¤8

7¤8

 

21¤8

11¤8

 

25¤8*

11¤8

 

25¤8*

 

 

 

 

 

 

 

 

074

 

Ckt A

7¤8

 

15¤8

7¤8

 

21¤8

7¤8

 

21¤8

7¤8

 

21¤8

11¤8

 

25¤8²

1 1¤8

 

25¤8²

 

Ckt B

7¤8

 

21¤8

7¤8

 

21¤8

11¤8

 

21¤8

11¤8

 

25¤8

11¤8

 

25¤8

11¤8

 

25¤8

 

 

 

 

 

 

 

 

084

 

Ckt A

7¤8

 

21¤8

7¤8

 

21¤8

11¤8

 

21¤8

11¤8

 

25¤8²

1 1¤8

 

25¤8²

1 1¤8

 

25¤8²

 

Ckt B

7¤8

 

21¤8

7¤8

 

21¤8

11¤8

 

21¤8

11¤8

 

25¤8

11¤8

 

25¤8

11¤8

 

25¤8

 

 

 

 

 

 

 

 

094

 

Ckt A

7¤8

 

21¤8

11¤8

 

21¤8

11¤8

 

25¤8**

11¤8

 

25¤8**

11¤8

 

25¤8**

13¤8

 

31¤8**

 

Ckt B

7¤8

 

21¤8

7¤8

 

21¤8

11¤8

 

21¤8

11¤8

 

25¤8

1 1¤8

 

25¤8

1 1¤8

 

25¤8

 

 

 

 

 

 

 

 

104

 

Ckt A

7¤8

 

21¤8

7¤8

 

21¤8

11¤8

 

21¤8

11¤8

 

25¤8**

11¤8

 

25¤8**

13¤8

 

31¤8**

 

Ckt B

7¤8

 

21¤8

11¤8

 

21¤8

11¤8

 

25¤8

11¤8

 

25¤8

13¤8

 

25¤8

13¤8

 

31¤8**

 

 

 

 

 

 

 

 

LEGEND

LÐ Liquid Line S Ð Suction Line

*Double suction riser required on units with ®eld installed unloader on circuit B compressor if condensing unit is elevated above evaporator.

²Double suction riser required on units with ®eld installed unloader on circuit B compressor if condensing unit is elevated above evaporator.

**Double suction riser required on all unit con®gurations if condens- ing unit is elevated above evaporator.

NOTES:

1.Addition of 2 unloaders to circuit B compressor is not recommended.

2.38AH094 and 38AH104 piping sizes apply only to factory sup- plied unit con®gurations. They do NOT take into account any ®eld installed unloaders.

3.Piping sizes are based on unit operation above 40 F (4.4 C) satu- rated suction temperature (SST). When operating below 40 F

(4.4 C), refer to Carrier System Design Manual, E20-II piping de- sign program, or ASHRAE Handbook to select proper line sizes.

4.Pipe sizes are based on the total linear length shown for each column, plus a 50% allowance for ®ttings.

5.Suction and liquid line sizing is based on pressure drop equivalent to 2 F (1.1 C) at nominal rating conditions. Higher pressure drop design criteria may allow selection of smaller pipe sizes, but at a penalty of decreased system capacity and ef®ciency.

6.Double suction risers may be required if condensing unit is elevated above the evaporator. See footnotes and double suction riser table below.

7.Refer to Carrier System Design Manual or to E20-II design programs for further information on selecting pipe sizes for split systems.

8.All pipe sizes are OD inches. Equivalent sizes in millimeters follow:

in.

mm

5¤8

15.9

7¤8

22.2

11¤8

28.6

13¤8

34.9

15¤8

41.3

21¤8

54.0

25¤8

66.7

31¤8

79.4

Table 7BÐ Refrigerant Piping Requirements for Double Suction Risers,

38AH054-104 Dual-Circuit Units Ð 50 Hz

 

 

 

 

 

 

TOTAL LINEAR LENGTH OF INTERCONNECTING PIPE Ð FT (M)

 

 

 

 

UNIT

 

50-75

 

 

 

 

 

75-100

 

 

 

100-150

 

 

150-200

 

 

38AH

 

(15.2-22.9)

 

 

 

(22.9-30.5)

 

 

(30.5-45.7)

 

 

(45.7-61.0)

 

 

 

 

A

 

B

C

 

A

 

 

B

 

C

A

 

B

C

A

 

B

C

054

 

Ckt A

Ð

 

Ð

Ð

Ð

 

 

Ð

Ð

 

Ð

Ð

 

Ð

Ð

Ð

 

Ð

 

 

Ckt B

Ð

 

Ð

Ð

Ð

 

 

Ð

Ð

 

Ð

Ð

 

Ð

1

5¤8

 

21¤8

25¤8

 

 

 

 

 

 

 

 

064

 

Ckt A

13¤8

 

15¤8

21¤8

 

13¤8

 

 

15¤8

 

21¤8

15¤8

 

15¤8

21¤8

15¤8

 

21¤8

25¤8

 

Ckt B

Ð

 

Ð

Ð

Ð

 

 

Ð

Ð

 

1

5¤8

 

21¤8

25¤8

15¤8

 

21¤8

25¤8

 

 

 

 

 

 

 

 

074

 

Ckt A

Ð

 

Ð

Ð

Ð

 

 

Ð

Ð

 

1

5¤8

 

21¤8

25¤8

15¤8

 

21¤8

25¤8

 

Ckt B

Ð

 

Ð

Ð

Ð

 

 

Ð

Ð

 

Ð

Ð

 

Ð

Ð

Ð

 

Ð

 

 

 

 

 

 

 

 

 

 

084

 

Ckt A

Ð

 

Ð

Ð

1

5¤8

 

 

21¤8

 

25¤8

15¤8

 

21¤8

25¤8

15¤8

 

21¤8

25¤8

 

Ckt B

Ð

 

Ð

Ð

Ð

 

 

Ð

Ð

 

Ð

Ð

 

Ð

Ð

Ð

 

Ð

 

 

 

 

 

 

 

 

 

 

094

 

Ckt A

13¤8

 

21¤8

25¤8

 

13¤8

 

 

21¤8

 

25¤8

15¤8

 

21¤8

25¤8

15¤8

 

25¤8

31¤8

 

Ckt B

Ð

 

Ð

Ð

1

3¤8

 

 

21¤8

 

25¤8

15¤8

 

21¤8

25¤8

15¤8

 

21¤8

25¤8

 

 

 

 

 

 

 

 

104

 

Ckt A

Ð

 

Ð

Ð

1

3¤8

 

 

21¤8

 

25¤8

15¤8

 

21¤8

25¤8

15¤8

 

25¤8

31¤8

 

Ckt B

Ð

 

Ð

Ð

Ð

 

 

Ð

Ð

 

Ð

Ð

 

Ð

1

5¤8

 

25¤8

31¤8

 

 

 

 

 

 

 

 

LEGEND

ÐÐ Not Required

Pipe A Ð Suction Riser Without Trap

Pipe B Ð Suction Riser With Trap

Pipe C Ð Suction Line to Condensing Unit

NOTES:

1.See Refrigerant Piping Requirements table at top of page to determine need for double suction risers.

2.Pipe sizes are based on the total linear length, shown for each column, plus a 50% allowance for ®ttings.

3.Suction and liquid line sizing is based on pressure drop equivalent to 2 F (1.1 C) at nominal rating conditions. Higher design pressure drop criteria may allow selection of smaller pipe sizes but at a pen- alty of decreased system capacity and ef®ciency.

4.Refer to Carrier System Design Manual or to E20-II design programs for further information on selecting pipe sizes for split systems.

5.All pipe sizes are OD inches. See Table 7A notes for metric equivalents.

6.Refer to Fig. 13 for double suction riser construction.

17

Page 17
Image 17
Carrier 38AH044-084 specifications 15¤8 21¤8

38AH044-084 specifications

The Carrier 38AH044-084 is an innovative air conditioning unit designed to provide efficient cooling solutions for residential and light commercial applications. This model is a part of Carrier's Aqua Series and is well-regarded for its combination of performance, energy efficiency, and innovative features.

One of the standout characteristics of the Carrier 38AH044-084 is its high-efficiency rating, which often exceeds the minimum efficiency standards set by the Department of Energy. Its Seasonal Energy Efficiency Ratio (SEER) rating is commendable, indicating significant energy savings over traditional air conditioning units. This efficiency translates to lower utility bills and a reduced carbon footprint, making it an environmentally friendly option.

In terms of technology, the Carrier 38AH044-084 is equipped with a modern scroll compressor. This type of compressor is known for its durability and quiet operation, contributing to a more pleasant indoor environment. The unit also incorporates advanced refrigerant technology, often using R-410A refrigerant, which is recognized for its lower environmental impact compared to older refrigerants like R-22.

The design of the 38AH044-084 focuses on ease of installation and maintenance. The compact footprint makes it suitable for various installation scenarios, whether on rooftops or ground levels. Additionally, the unit is engineered for durability, featuring weather-resistant components that can withstand harsh environmental conditions.

Another notable feature is the advanced airflow system, which ensures even distribution of cooled air throughout the space. This technology minimizes hot spots and enhances overall comfort. Furthermore, the unit supports a range of thermostatic controls, allowing users to customize their cooling experience according to their specific needs.

The Carrier 38AH044-084 is also designed with noise reduction in mind. Its sound-dampening technology helps minimize operational noise, making it a suitable choice for residential areas where noise levels are a concern.

In summary, the Carrier 38AH044-084 offers an excellent combination of energy efficiency, advanced technology, and user-friendly features. Whether for a home or a light commercial space, this unit provides reliable cooling performance while maintaining a focus on environmental responsibility and occupant comfort. With its robust design and innovative capabilities, it's a solid choice for those seeking effective and efficient air conditioning solutions.