528194-YTG-F-1210

Drive Selection

1.Determine side or bottom supply duct Application.

2.Determine desired airflow.

3.Calculate or measure the amount of external static pressure.

4.Using the operating point determined from steps 1, 2 & 3, locate this point on the appropriate supply air blower performance table. (Linear interpolation may be necessary.)

5.Noting the RPM and BHP from step 4, locate the appropriate motor and, or drive on the RPM selection table.

6.Review the BHP compared to the motor options available. Select the appropriate motor and, or drive.

7.Review the RPM range for the motor options available. Select the appropriate drive if multiple drives are available for the chosen motor.

8.Determine turns open to obtain the desired operation point.

Example

1.2600 CFM

2.1.6 iwg

3.Using the supply air blower performance table below, the following data point was located: 1268 RPM & 1.95 BHP.

4.Using the RPM selection table below, Size X and Model Y is found.

5.1.95 BHP exceeds the maximum continuous BHP rating of the 1.5 HP motor. The 2 HP motor is required.

6.1268 RPM is within the range of the 2 HP drives.

7.Using the 2 HP motor and drive, .5 turns open will achieve 1268 RPM.

Airflow Performance

Example Supply Air Blower Performance

Air Flow

 

 

 

 

 

 

Available External Static Pressure - IWG

 

 

 

 

 

 

 

0.2

0.4

0.6

0.8

1.0

1.2

 

1.4

 

1.6

 

1.8

 

2.0

 

(CFM)

 

 

 

 

 

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM

BHP

RPM BHP

RPM BHP

RPM BHP

RPM BHP

RPM BHP

 

 

 

 

1.5 HP & Field

Supplied Drive

 

 

 

Standard 1.5 HP & Drive

 

 

Alternate 2 HP & Drive

 

2200

804

0.50

866

0.71

925

0.90

982

1.06

1038

1.21

1092

1.35

1147

1.48

1203

1.61

1259

1.73

1317

1.87

2400

835

0.66

897

0.87

956

1.06

1013

1.22

1069

1.37

1124

1.51

1178

1.64

1234

1.77

1290

1.90

1348

2.03

2600

869

0.84

931

1.05

990

1.24

1047

1.40

1103

1.55

1158

1.69

1212

1.82

1268

1.95

1324

2.07

1382

2.21

2800

906

1.03

968

1.25

1027

1.43

1084

1.60

1139

1.75

1194

1.89

1249

2.02

1304

2.14

1361

2.27

-

-

Table X: RPM Selection

Size

Model

HP

Max

Motor

Blower

6 Turns

5 Turns

4 Turns

3 Turns

2 Turns

1 Turn

Fully

(Tons)

BHP

Sheave

Sheave

Open

Open

Open

Open

Open

Open

Closed

 

 

X

Y

1.5

1.73

1VM50

AK74

N/A

897

945

991

1035

1079

1126

2

2.30

1VM50

AK64

N/A

1039

1094

1150

1207

1256

1308

 

 

32

Johnson Controls Unitary Products

Page 31 Page 33
Page 32
Image 32
York R-410A manual Airflow Performance
Page 31 Page 33

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.
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