Carrier 48DL Installation Manual download pdf (Page 73)

264975-BIM-B-1208

Johnson Controls Unitary Products 73

DU-10 (10 ton) high efficiency unit uses TXV. Charge the unit to 10° subcooling.

TABLE 77: DU-07 (7.5 TON) HIGH EFFICIENCY SUPERHEAT CHARGING

Outdoor

Temp (°F)

Superheat at Compressor Suction (°F)

Airflow = 3000 CFM

Indoor WB Temp (°F)

55 57 59 61 63 65 67 69 71 73 75

65 37.1 37.6 38.1 38.5 39.0 39.4 39.9 40.0 40.1 40.2 40.3

70 32.1 32.8 33.4 34.1 34.8 35.5 36.2 36.4 36.7 37.0 37.3

75 27.0 27.9 28.8 29.7 30.6 31.5 32.4 32.9 33.4 33.9 34.4

80 21.9 23.1 24.2 25.3 26.4 27.5 28.7 29.3 30.0 30.7 31.4

85 16.9 18.2 19.5 20.9 22.2 23.6 24.9 25.8 26.7 27.5 28.4

90 7.3 9.6 11.8 14.0 16.2 18.4 20.6 22.3 24.1 25.8 27.6

95 - - - 7.0 10.1 13.1 16.2 18.8 21.5 24.1 26.8

100 - - - 5.4 7.8 10.2 12.6 15.3 18.0 20.7 23.4

105 - - - - 5.5 7.2 8.9 11.7 14.5 17.3 20.1

110 - - - - - - 5.3 8.1 11.0 13.9 16.8

115 --------7.510.513.4

TABLE 78: DU-08 (8.5 TON) HIGH EFFICIENCY SUPERHEAT CHARGING

Outdoor

Temp (°F)

Superheat at Compressor Suction (°F)

Airflow = 3000 CFM

Indoor WB Temp (°F)

55 57 59 61 63 65 67 69 71 73 75

65 29.9 31.4 32.9 34.4 35.8 37.3 38.8 39.9 41.0 42.2 43.3

70 27.5 29.0 30.5 32.0 33.5 35.0 36.5 37.4 38.4 39.3 40.3

75 25.1 26.7 28.2 29.7 31.2 32.7 34.2 35.0 35.7 36.5 37.2

80 22.8 24.3 25.8 27.3 28.9 30.4 31.9 32.5 33.1 33.6 34.2

85 20.4 21.9 23.4 25.0 26.5 28.1 29.6 30.0 30.4 30.8 31.2

90 12.1 14.4 16.6 18.9 21.2 23.5 25.8 26.9 28.0 29.1 30.2

95 - 6.8 9.8 12.9 15.9 19.0 22.0 23.8 25.6 27.4 29.2

100 - 5.3 7.6 9.8 12.1 14.3 16.6 19.1 21.7 24.3 26.9

105 - - 5.3 6.7 8.2 9.6 11.1 14.5 17.8 21.2 24.5

110 - - - - - - 5.7 9.8 13.9 18.1 22.2

115 -------5.1 10.0 15.0 19.9

TABLE 79: DU-12 (12.5 TON) HIGH EFFICIENCY SUPERHEAT CHARGING

Outdoor

Temp (°F)

Superheat at Compressor Suction (°F)

Airflow = 5000 CFM

Indoor WB Temp (°F)

55 57 59 61 63 65 67 69 71 73 75

65 7.9 10.7 13.6 16.4 19.3 22.2 25.0 26.9 28.7 30.5 32.4

70 7.3 9.7 12.2 14.6 17.1 19.5 22.0 24.2 26.5 28.8 31.0

75 6.7 8.7 10.8 12.8 14.8 16.9 18.9 21.6 24.3 27.0 29.7

80 6.1 7.7 9.3 11.0 12.6 14.3 15.9 19.0 22.1 25.2 28.3

85 5.5 6.7 7.9 9.2 10.4 11.6 12.9 16.4 19.9 23.5 27.0

90 5.6 6.5 7.4 8.4 9.3 10.2 11.2 14.9 18.7 22.5 26.2

95 5.6 6.3 6.9 7.6 8.2 8.8 9.5 13.5 17.5 21.5 25.5

100 5.2 5.8 6.5 7.1 7.8 8.4 9.0 12.3 15.6 18.8 22.1

105 - 5.4 6.0 6.7 7.3 8.0 8.6 11.1 13.7 16.2 18.7

110 - - 5.6 6.2 6.9 7.5 8.2 10.0 11.8 13.6 15.4

115 - - 5.1 5.8 6.4 7.1 7.7 8.8 9.9 10.9 12.0

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Carrier 48DL Installation Manual Page 73

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