288429-YIM-A-0307

Table 17: DEX048 Superheat Charging

Outdoor

 

 

 

Superheat at Compressor Suction (°F), Airflow = 1600 CFM

 

 

 

Temp

 

 

 

 

 

Indoor Wet Bulb Temp (°F)

 

 

 

 

 

(°F)

55

57

59

 

61

63

65

67

69

 

71

73

75

65

10.1

10.0

9.9

 

9.8

9.8

9.7

9.6

9.6

 

9.7

9.7

9.7

70

9.9

9.8

9.7

 

9.7

9.6

9.5

9.5

9.5

 

9.6

9.6

9.6

75

9.7

9.6

9.5

 

9.5

9.4

9.4

9.3

9.4

 

9.5

9.5

9.5

80

9.5

9.4

9.4

 

9.3

9.3

9.2

9.2

9.3

 

9.4

9.4

9.5

85

9.2

9.2

9.2

 

9.1

9.1

9.0

9.0

9.1

 

9.2

9.3

9.4

90

8.8

8.9

8.9

 

8.9

9.0

9.0

9.1

9.2

 

9.4

9.5

9.5

95

8.4

8.5

8.6

 

8.7

8.9

9.0

9.1

9.3

 

9.5

9.6

9.7

100

8.3

8.4

8.5

 

8.6

8.7

8.8

9.0

9.2

 

9.5

9.7

9.8

105

8.3

8.4

8.4

 

8.5

8.6

8.7

8.8

9.2

 

9.5

9.7

9.9

110

8.2

8.3

8.4

 

8.4

8.5

8.6

8.7

9.1

 

9.5

9.8

10.0

115

8.1

8.2

8.3

 

8.3

8.4

8.4

8.5

9.0

 

9.5

9.8

10.1

Table 18: DEY060 Superheat Charging

Outdoor

 

 

 

Superheat at Compressor Suction (°F), Airflow = 1750 CFM

 

 

 

Temp

 

 

 

 

 

Indoor Wet Bulb Temp (°F)

 

 

 

 

 

(°F)

55

57

59

 

61

63

65

67

69

 

71

73

75

65

16.6

16.7

16.8

 

16.9

17.1

17.2

17.3

17.9

 

18.4

18.7

19.0

70

16.2

16.4

16.5

 

16.6

16.7

16.8

17.0

17.4

 

17.9

18.1

18.4

75

15.9

16.0

16.1

 

16.2

16.4

16.5

16.6

17.0

 

17.4

17.6

17.7

80

15.5

15.7

15.8

 

15.9

16.0

16.1

16.3

16.5

 

16.8

17.0

17.1

85

15.2

15.3

15.4

 

15.5

15.7

15.8

15.9

16.1

 

16.3

16.4

16.5

90

14.0

14.2

14.3

 

14.4

14.5

14.6

14.8

15.3

 

15.9

16.2

16.5

95

12.9

13.0

13.1

 

13.2

13.4

13.5

13.6

14.6

 

15.5

16.0

16.5

100

12.6

12.8

12.9

 

13.0

13.1

13.2

13.3

14.3

 

15.2

15.7

16.2

105

12.4

12.5

12.6

 

12.7

12.8

12.9

13.0

14.0

 

14.9

15.4

15.9

110

12.2

12.3

12.3

 

12.4

12.5

12.6

12.7

13.7

 

14.6

15.1

15.6

115

11.9

12.0

12.1

 

12.2

12.2

12.3

12.4

13.4

 

14.3

14.8

15.3

Blower Speed Selection

The variable speed blowers are designed to deliver constant CFM regardless of the external static pressure (ESP) in the ductwork. Therefore, if too many supply registers are closed, a filter becomes clogged, or there is a restriction in the ductwork, the motor will automatically operate at a higher speed to compensate for the higher ESP. This may result in a higher operating sound level.

These units have variable speed motors that automatically adjust to provide constant CFM from 0.2" to 0.6" w.c. static pressure. From 0.6" to 1.0" static pressure, CFM is reduced by 2% per 0.1" increase in static. Operation on duct systems with greater than 1.0" w.c. external static pressure is not recommended.

To Set Cooling CFM:

Refer to Tables 7 and 8 for the possible cooling and heating CFM selections.

Find the recommended system airflow for the unit model.

Set desired cooling airflow by moving the jumper on the “Cool” tap located on the CFM selection board as indicated in Tables 7, 8 and Figure 10.

Airflow may be increased by 10% by moving the “ADJ” jumper to “B”. Airflow may be decreased by 10% by moving the “ADJ” jumper to “C”.

NOTE: CFM indicator light flashes once for every 100 CFM (i.e., 12 flashes = 1200 CFM).

To Set Delay Profile:

Every unit has multiple cooling “blower off delay” profiles to optimize system performance and efficiency. Refer to Table 19 for the regional climate in your area. Place the “DELAY” jumper tap on the CFM selection board to the appropriate pin setting.

To Set Electric Heat CFM:

The airflow required for Electric Heat may be different than for cooling.

Refer to Table 10 for the minimum required CFM for the electric heater installed. Find the desired airflow in Tables 7 and 8. Set the “Heat” Jumper on the CFM selection board to tap shown.

Unitary Products Group

17

Page 17
Image 17
York R-410A dimensions Blower Speed Selection

R-410A specifications

York R-410A is a widely recognized and highly efficient refrigerant used in modern air conditioning systems. Developed as an environmentally friendly alternative to R-22, R-410A has gained popularity in the HVAC industry due to its numerous advantageous features and characteristics.

One of the main features of York R-410A is its ability to provide superior cooling performance. This refrigerant operates efficiently at both high and low temperatures, allowing systems using it to maintain optimal indoor climates even during extreme weather conditions. Its high energy efficiency ratio (EER) and seasonal energy efficiency ratio (SEER) ratings make it a preferred choice for energy-conscious consumers, resulting in lower energy bills and a reduced carbon footprint.

Technologically, York R-410A systems feature advanced compressor designs that enhance their overall reliability and performance. These compressors are often equipped with variable-speed technology, enabling them to adjust their output to match the cooling demands of the space. This not only improves comfort levels but also leads to efficient energy consumption, reducing wear and tear on the equipment over time.

Another significant characteristic of York R-410A is its non-ozone-depleting properties. Unlike its predecessor R-22, which is being phased out due to its damaging effects on the ozone layer, R-410A is designed to minimize environmental impact. Its lower global warming potential (GWP) further underscores its role in promoting sustainability within the HVAC sector.

Furthermore, York R-410A systems are engineered with enhanced safety features. The refrigerant is non-toxic and non-flammable, which makes it safer for use in both residential and commercial applications. Additionally, its high thermal stability reduces the risk of breakdown or leakage, contributing to longer system lifespans and lower maintenance costs.

In conclusion, York R-410A stands out as a cutting-edge refrigerant that combines efficiency, safety, and environmental responsibility. With its advanced technologies and remarkable characteristics, it meets the demands of modern air conditioning requirements while paving the way for a sustainable future in HVAC systems. Adopting York R-410A not only benefits individual users through improved comfort and lower energy bills but also plays a vital role in protecting our planet's ozone layer and mitigating climate change.