Operating Pressures

Table OP-1: Operating Pressures

GENERAL: There are many variables (airflow, air temperatures) in an air conditioning system that will affect operating re- frigerant pressures and temperatures. The chart below shows approximate conditions and is based on air flow at the rated SCFM, entering air at 80.6 °FDB, 66.2 °FWB in cooling, 68 °FDB in heating. (+)Heating data with 35 °F EWT is based on the use of an anti-freeze solution having a freezing point 20 °F lower than the minimum expected entering temperature.

 

 

 

 

Operating Data

 

 

 

 

 

 

Entering

Water

 

Cooling

 

 

Heating

 

 

Model

Water

Flow

Suction

Discharge

Water

Air Temp

Suction

Discharge

Water

Air Temp

Pressure,

Pressure,

Temp

Drop,

Pressure,

Pressure,

Temp

Rise,

 

Temp, °F

GPM

 

PSIG

PSIG

Rise, °F

°FDB

PSIG

PSIG

Drop, °F

°FDB

 

 

 

GET 009

35

1.8

 

 

 

 

46 - 52

158 - 201

5

- 6

11 - 15

 

 

 

 

 

 

 

 

 

 

 

 

GET 009

35

2.25

 

 

 

 

46 - 53

159 - 203

4

- 5

12 - 15

 

 

 

 

 

 

 

 

 

 

 

 

GET 009

45

1.8

68 - 78

100 - 127

11 - 14

11 - 15

55 - 63

171 - 218

6

- 7

13 - 17

 

 

 

 

 

 

 

 

 

 

 

 

GET 009

45

2.25

68 - 78

97 - 123

9 - 11

12 - 15

56 - 65

172 - 219

5

- 6

14 - 18

 

 

 

 

 

 

 

 

 

 

 

 

GET 009

55

1.8

70 - 80

117 - 148

11 - 14

11 - 14

65 - 75

182 - 231

7

- 9

15 - 19

 

 

 

 

 

 

 

 

 

 

 

 

GET 009

55

2.25

70 - 80

113 - 144

9 - 11

12 - 15

66 - 76

183 - 233

6

- 7

16 - 20

 

 

 

 

 

 

 

 

 

 

 

GET 009

68

1.8

73 - 84

142 - 180

10 - 13

11 - 14

78 - 90

193 - 246

8 - 10

18 - 22

 

 

 

 

 

 

 

 

 

 

 

 

GET 009

68

2.25

73 - 84

138 - 176

9 - 11

12 - 15

79 - 91

195 - 248

7

- 9

18 - 23

 

 

 

 

 

 

 

 

 

 

 

GET 009

75

1.8

75 - 86

157 - 199

10 - 13

11 - 14

85 - 98

201 - 256

9 - 11

19 - 24

 

 

 

 

 

 

 

 

 

 

 

 

GET 009

75

2.25

74 - 86

153 - 195

8 - 11

11 - 15

87 - 100

202 - 257

7

- 9

19 - 25

 

 

 

 

 

 

 

 

 

 

 

 

GET 009

86

1.8

77 - 88

183 - 233

10 - 13

11 - 14

96 - 110

208 - 265

10

- 13

21 - 26

 

 

 

 

 

 

 

 

 

 

 

GET 009

86

2.25

76 - 88

179 - 227

8 - 11

11 - 15

98 - 113

209 - 266

8 - 10

21 - 27

 

 

 

 

 

 

 

 

 

 

 

 

GET 009

95

1.8

78 - 90

206 - 262

10 - 13

11 - 14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GET 009

95

2.25

78 - 90

202 - 257

8 - 10

11 - 14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GET 012

35

2.5

 

 

 

 

44 - 50

160 - 204

5

- 6

19 - 24

GET 012

35

3.1

 

 

 

 

45 - 51

162 - 206

4

- 5

19 - 24

GET 012

45

2.5

68 - 78

106 - 135

10 - 13

18 - 23

54 - 62

170 - 217

5

- 7

21 - 27

GET 012

45

3.1

67 - 77

102 - 130

9 - 11

19 - 24

55 - 63

172 - 219

4

- 6

22 - 27

GET 012

55

2.5

72 - 83

124 - 158

10 - 13

18 - 23

64 - 74

181 - 230

6

- 8

24 - 31

GET 012

55

3.1

71 - 82

120 - 153

9 - 11

18 - 23

65 - 75

182 - 232

5

- 7

25 - 31

GET 012

68

2.5

74 - 86

152 - 193

10 - 13

17 - 22

75 - 86

192 - 245

7

- 9

27 - 35

GET 012

68

3.1

74 - 85

147 - 187

8 - 11

18 - 23

76 - 87

194 - 247

6

- 8

28 - 36

GET 012

75

2.5

76 - 87

168 - 213

10 - 13

17 - 21

79 - 90

196 - 250

8 - 10

29 - 37

GET 012

75

3.1

75 - 86

163 - 207

8 - 10

17 - 22

79 - 91

198 - 252

6

- 8

29 - 37

GET 012

86

2.5

77 - 89

195 - 248

10 - 12

16 - 20

84 - 96

203 - 258

8 - 11

30 - 39

GET 012

86

3.1

77 - 88

190 - 242

8 - 10

16 - 21

85 - 97

204 - 260

7

- 9

31 - 39

GET 012

95

2.5

79 - 91

219 - 279

9 - 12

15 - 19

 

 

 

 

 

GET 012

95

3.1

78 - 90

214 - 273

8 - 10

15 - 19

 

 

 

 

 

GET 015

35

2.8

 

 

 

 

42 - 49

161 - 204

5

- 7

16 - 20

 

 

 

 

 

 

 

 

 

 

 

 

GET 015

35

3.5

 

 

 

 

44 - 51

163 - 208

4

- 6

16 - 20

 

 

 

 

 

 

 

 

 

 

 

 

GET 015

45

2.8

71 - 81

100 - 127

12 - 15

16 - 20

51 - 59

171 - 217

6

- 8

18 - 23

 

 

 

 

 

 

 

 

 

 

 

 

GET 015

45

3.5

71 - 81

97 - 124

10 - 12

16 - 21

53 - 61

174 - 221

5

- 7

19 - 24

 

 

 

 

 

 

 

 

 

 

 

GET 015

55

2.8

73 - 84

116 - 147

12 - 15

16 - 20

61 - 70

181 - 231

8 - 10

21 - 26

 

 

 

 

 

 

 

 

 

 

 

 

GET 015

55

3.5

73 - 84

112 - 143

10 - 12

16 - 20

63 - 72

184 - 234

6

- 8

21 - 27

 

 

 

 

 

 

 

 

 

 

 

GET 015

68

2.8

75 - 86

141 - 179

12 - 15

15 - 20

75 - 87

195 - 249

9 - 12

24 - 31

 

 

 

 

 

 

 

 

 

 

 

 

GET 015

68

3.5

74 - 86

137 - 174

10 - 12

16 - 20

77 - 89

198 - 252

7

- 9

25 - 31

 

 

 

 

 

 

 

 

 

 

 

 

GET 015

75

2.8

75 - 86

156 - 199

12 - 15

15 - 19

83 - 95

203 - 258

10

- 13

26 - 33

 

 

 

 

 

 

 

 

 

 

 

GET 015

75

3.5

75 - 86

152 - 194

10 - 12

15 - 19

84 - 97

205 - 261

8 - 10

26 - 34

 

 

 

 

 

 

 

 

 

 

 

 

GET 015

86

2.8

76 - 87

184 - 234

12 - 15

14 - 18

92 - 106

211 - 269

11

- 14

28 - 36

 

 

 

 

 

 

 

 

 

 

 

GET 015

86

3.5

76 - 87

179 - 228

9 - 12

15 - 19

94 - 108

214 - 272

9 - 12

29 - 37

 

 

 

 

 

 

 

 

 

 

 

 

GET 015

95

2.8

77 - 88

208 - 265

11 - 14

14 - 18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GET 015

95

3.5

77 - 88

203 - 258

9 - 12

14 - 18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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21

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Trane GETB manual Table OP-1 Operating Pressures

GETB specifications

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