Step 6 — Wire Electrical Connections

WARNING

To avoid possible injury or death due to electrical shock, open the power supply disconnect switch and secure it in an open position during installation. Install lockout tag.

CAUTION

Use only copper conductors for field-installed electrical wiring. Unit terminals are not designed to accept other types of conductors. Failure to heed this warning could result in equipment damage.

All field-installed wiring, including the electrical ground, MUST comply with the National Electrical Code (NEC) as well as applicable local codes. In addition, all field wiring must conform to the Class II temperature limitations described in the NEC.

Operating voltage must be the same voltage and phase as shown in Table 3.

Refer to unit wiring diagrams Fig. 4-8 for a schematic of the field connections which must be made by the installing (or electrical) contractor.

Consult the unit wiring diagram located on the inside of the compressor access panel to ensure proper electrical hookup. The installing (or electrical) contractor must make the field connections when using field-supplied disconnect.

Make all final electrical connections with a length of flexi- ble conduit to minimize vibration and sound transmission to the building.

POWER CONNECTION — Line voltage connection is made by connecting incoming line voltage wires to L1, L2, and L3 on the power distribution block.

SUPPLY VOLTAGE — Operating voltage to unit must be within voltage range indicated on unit nameplate.

Voltages between phases must be balanced within 2%. Use the following formula to determine the percentage voltage imbalance:

% Voltage Imbalance

= 100 x

max voltage deviation from average voltage

 

average voltage

Example: Supply voltage is 380-3-50.

AB = 372 volts

BC = 376 volts

AC = 384 volts

Average Voltage =

372 + 376 + 384

3

 

= 1132 3

= 377

Determine maximum deviation from average voltage:

(AB) 372 – 377 = 5 v (BC) 376 – 377 = 1 v (AC) 384 – 377 = 7 v

Maximum deviation is 7 v. Determine percent voltage imbalance.

% Voltage Imbalance =

100 x

 

7

 

377

=

1.86%

 

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electri- cal components.

NOTE: If more than 2% voltage imbalance is present, contact local electric utility.

Table 3 — 50PSW Electrical Data

50PSW UNIT

VOLTAGE

 

VOLTAGE RANGE

COMPRESSOR

 

TOTAL

MCA

MOCP*

 

SIZE

(V-Ph-Hz)

 

MIN/MAX

RLA

LRA

 

QTY

FLA

 

 

 

 

 

 

036

220/240-1-50

 

198/264

13.5

67

 

1

13.5

16.9

30

 

380/420-3-50

 

342/462

5.4

38

 

1

5.4

6.8

15

 

 

 

 

 

060

220/240-1-50

 

198/264

24.5

153

 

1

24.5

30.6

50

 

380/420-3-50

 

342/462

9.6

74

 

1

9.6

12.0

20

 

 

 

 

 

120

220/240-1-50

 

198/264

24.5

153

 

2

49.0

55.1

80

 

380/420-3-50

 

342/462

9.6

74

 

2

19.2

21.6

30

 

 

 

 

 

180

220/240-1-50

 

198/264

44.9

273

 

1

44.9

56.1

100

 

380/420-3-50

 

342/462

18.6

118

 

1

18.6

23.3

40

 

 

 

 

 

360

220/240-1-50

 

198/264

44.9

273

 

2

89.8

101.0

125

 

380/420-3-50

 

342/462

18.6

118

 

2

37.2

46.6

60

 

 

 

 

 

 

LEGEND

 

 

 

 

 

 

 

 

FLA

— Full Load Amps

 

 

 

 

 

 

 

 

HACR — Heating, Air Conditioning, and Refrigeration

 

 

 

 

 

 

 

LRA — Locked Rotor Amps

 

 

 

 

 

 

 

 

MCA — Minimum Circuit Amps

 

 

 

 

 

 

 

 

MOCP — Minimum Overcurrent Protection

 

 

 

 

 

 

 

 

RLA

— Rated Load Amps

 

 

 

 

 

 

 

 

*Time-delay fuse or HACR circuit breaker.

7

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Carrier 50PSW036-360 specifications Wire Electrical Connections, 50PSW Electrical Data, Min/Max Rla Lra Qty Fla
Page 6 Page 8

50PSW036-360 specifications

The Carrier 50PSW036-360 is a highly efficient and reliable rooftop unit designed for commercial applications. It combines advanced technologies and innovative features to provide optimal indoor comfort while ensuring energy savings and ease of operation. Its robust construction and numerous functionalities make the 50PSW036-360 an ideal choice for various building types, from retail spaces to office complexes.

One of the main features of the Carrier 50PSW036-360 is its efficient cooling and heating capabilities. It employs state-of-the-art scroll compressors, which deliver consistent performance and lower noise levels while consuming less energy compared to conventional compressors. This translates into significant energy savings, making it a cost-effective solution for businesses aiming to reduce their operational expenses.

The unit is equipped with a range of advanced technologies, including Carrier’s EcoBlue™ technology, which optimizes airflow and enhances energy efficiency. This technology helps achieve higher SEER (Seasonal Energy Efficiency Ratio) ratings, allowing users to benefit from lower utility bills without sacrificing comfort. Additionally, the unit comes with smart control options, enabling users to easily manage and monitor temperature settings, fan speeds, and energy consumption through intuitive interfaces.

The Carrier 50PSW036-360 also emphasizes versatility and adaptability. It has a compact design that makes it easy to install on rooftops, while its extensive selection of options, such as electric heat and economizers, allows it to be configured to meet various application requirements. Its advanced filtration system ensures high indoor air quality by removing dust, allergens, and other pollutants, which is essential for maintaining a healthy indoor environment.

Durability is another characteristic that sets the Carrier 50PSW036-360 apart. The unit is constructed using high-quality materials designed to withstand the rigors of outdoor environments. This ensures longevity and reliability, making it an excellent long-term investment for businesses.

In summary, the Carrier 50PSW036-360 is a top-of-the-line rooftop unit, ideal for commercial applications. Its blend of energy efficiency, advanced technologies, and robust construction makes it a preferred choice for maintaining optimal indoor climate conditions. With its versatility, durability, and ease of use, this system ensures comfort for occupants while helping businesses achieve their sustainability goals.
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