Operation Pressures; Operating Pressures In Cooling/Heating - Trane Axiom GEHB 006 Installation, Operation And Maintenance Manual

Operating Pressures
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 2.

Operating pressures in cooling/heating

Entering Water
Model Water Flow
GEH/GEV Temp, °F GPM
1.2
35°
1.5
1.2
45°
1.5
1.2
55°
1.5
1.2
006 (60 HZ)
68°
1.5
1.2
75°
1.5
1.2
86°
1.5
1.2
95°
1.5
1.7
35°
2.1
1.7
45°
2.1
1.7
55°
2.1
1.7
009 (60 HZ)
68°
006 (50 HZ) 2.1
1.7
75°
2.1
1.7
86°
2.1
95° 1.7
2.1
WSHP-SVX01E-EN

Operation Pressures

Operating Data
Cooling
Suction Discharge Water
Pressure, 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
Air Temp Suction Discharge
Drop Pressure Pressure
°F DB PSIG PSIG
42 - 48 165 - 210
45 - 52 168 - 214
24 - 30 52 - 60 176 - 224
24 - 31 56 - 64 180 - 229
23 - 30 63 - 73 189 - 241
24 - 30 67 - 77 193 - 246
23 - 29 78 - 90 206 - 262
23 - 29 82 - 94 210 - 268
23 - 29 85 - 98 214 - 272
23 - 29 89 - 103 219 - 279
22 - 28 95 - 109 225 - 287
23 - 29 99 - 114 231 - 294
22 - 28
22 - 28
44 - 50 163 - 208
45 - 51 166 - 211
21 - 27 52 - 60 174 - 221
21 - 27 54 - 62 176 - 224
20 - 26 63 - 72 186 - 236
20 - 26 65 - 75 188 - 239
20 - 25 78 - 89 201 - 256
20 - 25 80 - 92 204 - 259
19 - 24 85 - 98 211 - 268
19 - 25 87 - 100 213 - 271
19 - 24 96 - 110 221 - 281
19 - 24 97 - 112 223 - 284
18 - 23
18 - 23
Heating
Water Temp Air Temp
Drop Rise
°F °F DB
6 - 7 23 - 29
5 - 6 23 - 29
7 - 9 26 - 34
6 - 7 27 - 34
8 - 10 30 - 39
7 - 8 31 - 39
10 - 12 35 - 45
8 - 10 36 - 45
10 - 13 38 - 48
8 - 11 38 - 48
11 - 14 41 - 52
9 - 12 41 - 52
5 - 7 21 - 26
4 - 5 21 - 27
6 - 8 24 - 30
5 - 7 24 - 31
7 - 9 27 - 34
6 - 8 28 - 35
9 - 11 31 - 40
7 - 9 32 - 40
9 - 12 33 - 42
8 - 10 34 - 43
10 - 13 36 - 46
9 - 11 37 - 47
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