(042) 60HZ CHARGING CHART

OUTDOOR TEMP

 

 

 

 

° F

° C

 

 

 

 

 

 

689

100

 

125

52

 

 

 

 

 

 

 

 

 

 

115

46

PRESSURE (KILOPASCALS)

 

 

 

 

105

41

620

LINE PRESSURE (PSIG)

90

 

95

35

 

 

 

 

 

 

85

29

551

80

 

75

24

 

 

 

65

18

483

70

 

55

13

 

 

 

 

 

 

45

7

 

 

 

 

 

SUCTION LINE

414

SUCTION

60

 

 

 

345

50

 

 

 

 

 

 

 

 

 

276

 

40

 

 

 

 

207

 

30

 

 

 

20.0

30.0

40.0

50.0

60.0

70.0

80.0

 

 

SUCTION LINE TEMPERATURE (°F)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-7

-1

4

10

16

21

27

 

 

SUCTION LINE TEMPERATURE (°C)

 

 

50JS500091

C00030

Fig. 27ÐCooling Charging Chart, 50JS 042 Units

 

 

 

 

(060) 60HZ CHARGING CHART

OUTDOOR TEMP

 

 

 

 

° F

° C

 

 

 

 

 

 

689

100

 

 

 

PRESSURE (KILOPASCALS)

 

 

 

 

125

52

620

 

90

 

115

46

LINE PRESSURE (PSIG)

 

105

41

 

 

 

95

35

 

 

 

85

29

551

80

 

75

24

 

 

 

 

 

 

65

18

483

70

 

55

13

 

 

 

45

7

 

 

 

 

 

SUCTION LINE

414

SUCTION

60

 

 

 

345

50

 

 

 

 

 

 

 

 

 

276

 

40

 

 

 

 

207

 

30

 

 

 

20.0

30.0

40.0

50.0

60.0

70.0

80.0

 

 

SUCTION LINE TEMPERATURE (°F)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-7

-1

4

10

16

21

27

 

 

SUCTION LINE TEMPERATURE (°C)

 

 

50JS500093

C00032

Fig. 29ÐCooling Charging Chart, 50JS 060 Units

To change the speed of the blower motor (BM), remove the fan motor speed leg lead from the blower relay (BR). This wire is attached to IGC terminal BM for single-phase and 3-phase units. To change the speed, remove and replace with lead for desired blower motor speed. Insulate the removed lead to avoid contact with chassis parts.

For 460-v GE MotorsÐThe motor leads are color coded as follows:

3-SPEED Black = high Violet = jumper Orange = medium Red = low

 

 

 

 

(048) 60HZ CHARGING CHART

OUTDOOR TEMP

 

 

 

 

° F

° C

 

 

 

 

 

 

689

100

 

125

52

 

 

 

 

 

PRESSURE (KILOPASCALS)

 

 

 

 

115

46

620

 

90

 

105

41

LINE PRESSURE (PSIG)

 

95

35

 

 

 

 

 

 

85

29

551

80

 

75

24

 

 

 

483

70

 

65

18

 

 

 

55

13

 

 

 

 

 

SUCTION LINE

414

SUCTION

60

 

45

7

 

 

 

345

50

 

 

 

 

 

 

 

 

 

276

 

40

 

 

 

 

207

 

30

 

 

 

20.0

30.0

40.0

50.0

60.0

70.0

80.0

 

 

SUCTION LINE TEMPERATURE (°F)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-7

-1

4

10

16

21

27

 

 

SUCTION LINE TEMPERATURE (°C)

 

 

50JS500092

C00031

Fig. 28ÐCooling Charging Chart, 50JS 048 Units

To change the speed of the blower motor (BM), remove fan motor speed lead from the blower relay (BR) and replace with the lead for the desired blower motor speed. The motor speed lead is attached to terminal BM. For low and medium speeds black must be connected to the jumper wire. Insulate removed lead end to avoid contact with chassis parts. To select high speed on 460-v GE motors, separate the black female quick connect (QC) from the jumper lead male quick connect (QC) and connect the black lead to the BR. Insulate the jumper to avoid contact with any chassis parts.

MAINTENANCE

To ensure continuing high performance, and to minimize the possibility of premature equipment failure, periodic maintenance must be performed on this equipment. This heat pump unit should be inspected at least once each year by a qualified service person. To troubleshoot unit, refer to Table 5.

NOTE TO EQUIPMENT OWNER: Consult your local dealer about the availability of a maintenance contract.

The ability to properly perform maintenance on this equip- ment requires certain expertise, mechanical skills, tools and equipment. If you do not possess these, do not attempt to perform any maintenance on this equipment, other than those procedures recommended in the User's Manual. FAILURE TO HEED THIS WARNING COULD RESULT IN SERI- OUS INJURY OR DEATH AND POSSIBLE DAMAGE TO THIS EQUIPMENT.

20

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Image 20
Carrier 50JS instruction manual Maintenance, C00030, C00032, C00031

50JS specifications

The Carrier 50JS is a high-performance rooftop unit designed for commercial applications, combining advanced technology with energy efficiency to deliver optimal heating and cooling performance. Its compact design allows for easy installation, making it an ideal choice for various settings such as retail spaces, schools, and office buildings.

One of the standout features of the Carrier 50JS is its innovative energy efficiency. Equipped with a high-efficiency scroll compressor, it significantly reduces energy consumption while providing reliable climate control. This model boasts a commendable SEER (Seasonal Energy Efficiency Ratio) rating, which translates to lower utility bills and a reduced carbon footprint, meeting modern energy efficiency standards.

The 50JS unit utilizes R-410A refrigerant, an environmentally friendly option that contributes to its low global warming potential compared to traditional refrigerants. This aligns with Carrier's commitment to sustainability and reducing environmental impact.

Another significant characteristic of the 50JS is its advanced controls and intelligent building integration capabilities. The unit comes with a microprocessor-based control system that allows for precise temperature management and can be easily integrated into building automation systems. This feature enhances user experience, providing real-time data and better management of HVAC operations.

Noise reduction technology is also a key design focus of the Carrier 50JS. The unit incorporates sound-attenuating materials and features that minimize operational noise, making it suitable for noise-sensitive environments like offices and educational institutions.

In terms of air quality, the 50JS offers various filtration options, including high-efficiency filters that remove airborne particulates. This results in cleaner, healthier indoor air, which is crucial for occupant comfort and well-being.

Furthermore, the rooftop unit is built to withstand harsh weather conditions, featuring a durable cabinet constructed from galvanized steel with a corrosion-resistant finish. This enhances the unit's longevity and reliability over time.

In conclusion, the Carrier 50JS rooftop unit stands out in the commercial HVAC market due to its energy efficiency, advanced controls, quiet operation, and robust design. It represents a blend of state-of-the-art technology and practical features, making it a preferred choice for those looking to invest in reliable and sustainable climate control solutions.