Operation Pressures

Operating Pressures

GENERAL: There are many variables (airflow, air temperatures) in an air conditioning system that will affect operating refrigerant pressures and temperatures. The charts below shows approximate conditions and is based on air flow at the rated SCFM, entering air at 80.6 °F(DB), 66.2 °F(WB) in cooling, 68 °F(DB) 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.

Table 7: Operating pressures in cooling/heating

Operating Data

Model

GEH/GEV

006 (60 HZ)

009 (60 HZ)

006 (50 HZ)

012 (60 HZ)

009 (50 HZ)

015 (60 HZ)

012 (50 HZ)

Entering

Water Temp,

°F

35°

45°

55°

68°

75°

86°

95°

35°

45°

55°

68°

75°

86°

95°

35°

45°

55°

68°

75°

86°

95°

35°

45°

55°

68°

75°

86°

95°

Water

Flow

GPM

1.2

1.5

1.2

1.5

1.2

1.5

1.2

1.5

1.2

1.5

1.2

1.5

1.2

1.5

1.7

2.1

1.7

2.1

1.7

2.1

1.7

2.1

1.7

2.1

1.7

2.1

1.7

2.1

2.2

2.8

2.2

2.8

2.2

2.8

2.2

2.8

2.2

2.8

2.2

2.8

2.2

2.8

2.8

3.5

2.8

3.5

2.8

3.5

2.8

3.5

2.8

3.5

2.8

3.5

2.8

3.5

 

Cooling

Suction Pres-

Discharge

Water

sure,

Pressure,

Temp Rise

PSIG

PSIG

°F

68 - 78

143 - 182

14 - 18

68 - 78

134 - 170

11 - 14

68 - 79

139 - 177

13 - 17

68 - 78

129 - 164

11 - 14

71 - 82

153 - 195

13 - 16

70 - 81

144 - 183

10 - 13

73 - 84

172 - 219

13 - 16

72 - 83

163 - 207

10 - 13

75 - 86

206 - 262

12 - 16

74 - 85

196 - 250

10 - 13

76 - 87

231 - 294

12 - 16

75 - 86

222 - 282

10 - 13

69 - 79

134 - 171

13 - 16

69 - 79

131 - 167

10 - 13

71 - 81

137 - 174

12 - 16

70 - 81

132 - 168

10 - 13

72 - 83

157 - 199

12 - 15

72 - 83

151 - 192

10 - 12

73 - 84

173 - 221

12 - 15

73 - 84

167 - 212

10 - 12

75 - 86

205 - 261

11 - 15

74 - 86

198 - 252

9 - 12

76 - 88

235 - 299

11 - 14

76 - 87

228 - 290

9 - 12

68 - 78

149 - 190

14 - 18

68 - 79

144 - 184

11 - 14

69 - 80

133 - 169

13 - 17

70 - 80

128 - 163

10 - 13

71 - 82

158 - 201

13 - 16

71 - 82

153 - 195

10 - 13

72 - 83

175 - 223

13 - 16

72 - 83

170 - 217

10 - 13

74 - 85

204 - 259

13 - 16

74 - 85

199 - 253

10 - 13

75 - 86

235 - 299

12 - 16

75 - 86

230 - 293

10 - 12

69 - 79

117 - 149

12 - 16

68 - 79

112 - 143

10 - 13

70 - 80

127 - 162

12 - 15

69 - 80

123 - 156

10 - 12

71 - 82

151 - 192

12 - 15

71 - 82

147 - 187

9 - 12

72 - 83

168 - 213

11 - 15

72 - 83

164 - 208

9 - 12

74 - 85

199 - 254

11 - 14

73 - 84

194 - 247

9 - 11

75 - 86

228 - 291

11 - 14

75 - 86

222 - 283

9 - 11

Air Temp

Drop

°F DB

24 - 30

24 - 31

23 - 30

24 - 30

23 - 29

23 - 29

23 - 29

23 - 29

22 - 28

23 - 29

22 - 28

22 - 28

21 - 27

21 - 27

20 - 26

20 - 26

20 - 25

20 - 25

19 - 24

19 - 25

19 - 24

19 - 24

18 - 23

18 - 23

22 - 28

23 - 29

21 - 27

22 - 27

21 - 26

21 - 26

20 - 26

20 - 26

19 - 25

20 - 25

19 - 24

19 - 24

21 - 27

21 - 27

21 - 26

20 - 26

20 - 25

20 - 25

19 - 25

19 - 25

19 - 24

19 - 24

18 - 23

18 - 23

Suction Pressure

PSIG 42 - 48 45 - 52

52 - 60

56 - 64

63 - 73

67 - 77

78 - 90

82 - 94

85 - 98

89 - 103

95 - 109

99 - 114

44 - 50

45 - 51

52 - 60

54 - 62

63 - 72

65 - 75

78 - 89

80 - 92

85 - 98

87 - 100

96 - 110

97 - 112

42 - 48

43 - 50

52 - 59

53 - 61

58 - 66

59 - 68

63 - 72

64 - 74

67 - 77

68 - 79

71 - 81

72 - 83

43 - 49

44 - 51

52 - 60

54 - 62

62 - 72

64 - 73

74 - 85

75 - 87

79 - 91

80 - 92

83 - 96

84 - 97

Heating

 

 

Discharge

Water Temp

Air Temp

Pressure

Drop

Rise

PSIG

 

°F

°F DB

165 - 210

6

- 7

23 - 29

168 - 214

5

- 6

23 - 29

176 - 224

7

- 9

26 - 34

180 - 229

6

- 7

27 - 34

189 - 241

8 - 10

30 - 39

193 - 246

7

- 8

31 - 39

206 - 262

10

- 12

35 - 45

210 - 268

8 - 10

36 - 45

214 - 272

10

- 13

38 - 48

219 - 279

8 - 11

38 - 48

225 - 287

11

- 14

41 - 52

231 - 294

9 - 12

41 - 52

163 - 208

5

- 7

21 - 26

166 - 211

4

- 5

21 - 27

174 - 221

6

- 8

24 - 30

176 - 224

5

- 7

24 - 31

186 - 236

7

- 9

27 - 34

188 - 239

6

- 8

28 - 35

201 - 256

9 - 11

31 - 40

204 - 259

7

- 9

32 - 40

211 - 268

9 - 12

33 - 42

213 - 271

8 - 10

34 - 43

221 - 281

10

- 13

36 - 46

223 - 284

9 - 11

37 - 47

159 - 202

5

- 7

21 - 27

161 - 205

4

- 6

21 - 27

170 - 216

6

- 8

24 - 30

172 - 218

5

- 7

24 - 31

178 - 227

7

- 9

26 - 33

180 - 229

6

- 7

27 - 34

184 - 234

8 - 10

29 - 37

186 - 237

6

- 8

29 - 37

187 - 238

9 - 11

30 - 38

189 - 240

7

- 9

30 - 39

194 - 247

9 - 12

32 - 40

196 - 249

7

- 9

32 - 41

166 - 211

5

- 6

20 - 26

167 - 213

4

- 5

21 - 26

179 - 227

6

- 8

23 - 30

180 - 230

5

- 6

24 - 30

191 - 244

7

- 9

27 - 34

193 - 246

6

- 8

27 - 35

207 - 264

8 - 11

31 - 39

209 - 266

7

- 9

31 - 39

214 - 272

9 - 11

32 - 41

216 - 275

7

- 9

33 - 41

215 - 274

10

- 12

34 - 43

217 - 276

8 - 10

34 - 43

 

 

 

 

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Trane GEV, GEH manual Operation Pressures, Operating Pressures

GEV, GEH specifications

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