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WSHP-SVX01D-EN 75
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
Entering
Water Temp,
°F
Water
Flow
GPM
Cooling Heating
Suction Pres-
sure,
PSIG
Discharge
Pressure,
PSIG
Water
Temp Rise
°F
Air Temp
Drop
°F DB
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Water Temp
Drop
°F
Air Temp
Rise
°F DB
006 (60 HZ)
35° 1.2 42 - 48 165 - 210 6 - 7 23 - 29
1.5 45 - 52 168 - 214 5 - 6 23 - 29
45° 1.2 68 - 78 143 - 182 14 - 18 24 - 30 52 - 60 176 - 224 7 - 9 26 - 34
1.5 68 - 78 134 - 170 11 - 14 24 - 31 56 - 64 180 - 229 6 - 7 27 - 34
55° 1.2 68 - 79 139 - 177 13 - 17 23 - 30 63 - 73 189 - 241 8 - 10 30 - 39
1.5 68 - 78 129 - 164 11 - 14 24 - 30 67 - 77 193 - 246 7 - 8 31 - 39
68° 1.2 71 - 82 153 - 195 13 - 16 23 - 29 78 - 90 206 - 262 10 - 12 35 - 45
1.5 70 - 81 144 - 183 10 - 13 23 - 29 82 - 94 210 - 268 8 - 10 36 - 45
75° 1.2 73 - 84 172 - 219 13 - 16 23 - 29 85 - 98 214 - 272 10 - 13 38 - 48
1.5 72 - 83 163 - 207 10 - 13 23 - 29 89 - 103 219 - 279 8 - 11 38 - 48
86° 1.2 75 - 86 206 - 262 12 - 16 22 - 28 95 - 109 225 - 287 11 - 14 41 - 52
1.5 74 - 85 196 - 250 10 - 13 23 - 29 99 - 114 231 - 294 9 - 12 41 - 52
95° 1.2 76 - 87 231 - 294 12 - 16 22 - 28
1.5 75 - 86 222 - 282 10 - 13 22 - 28
009 (60 HZ)
006 (50 HZ)
35° 1.7 44 - 50 163 - 208 5 - 7 21 - 26
2.1 45 - 51 166 - 211 4 - 5 21 - 27
45° 1.7 69 - 79 134 - 171 13 - 16 21 - 27 52 - 60 174 - 221 6 - 8 24 - 30
2.1 69 - 79 131 - 167 10 - 13 21 - 27 54 - 62 176 - 224 5 - 7 24 - 31
55° 1.7 71 - 81 137 - 174 12 - 16 20 - 26 63 - 72 186 - 236 7 - 9 27 - 34
2.1 70 - 81 132 - 168 10 - 13 20 - 26 65 - 75 188 - 239 6 - 8 28 - 35
68° 1.7 72 - 83 157 - 199 12 - 15 20 - 25 78 - 89 201 - 256 9 - 11 31 - 40
2.1 72 - 83 151 - 192 10 - 12 20 - 25 80 - 92 204 - 259 7 - 9 32 - 40
75° 1.7 73 - 84 173 - 221 12 - 15 19 - 24 85 - 98 211 - 268 9 - 12 33 - 42
2.1 73 - 84 167 - 212 10 - 12 19 - 25 87 - 100 213 - 271 8 - 10 34 - 43
86° 1.7 75 - 86 205 - 261 11 - 15 19 - 24 96 - 110 221 - 281 10 - 13 36 - 46
2.1 74 - 86 198 - 252 9 - 12 19 - 24 97 - 112 223 - 284 9 - 11 37 - 47
95° 1.7 76 - 88 235 - 299 11 - 14 18 - 23
2.1 76 - 87 228 - 290 9 - 12 18 - 23
012 (60 HZ)
009 (50 HZ)
35° 2.2 42 - 48 159 - 202 5 - 7 21 - 27
2.8 43 - 50 161 - 205 4 - 6 21 - 27
45° 2.2 68 - 78 149 - 190 14 - 18 22 - 28 52 - 59 170 - 216 6 - 8 24 - 30
2.8 68 - 79 144 - 184 11 - 14 23 - 29 53 - 61 172 - 218 5 - 7 24 - 31
55° 2.2 69 - 80 133 - 169 13 - 17 21 - 27 58 - 66 178 - 227 7 - 9 26 - 33
2.8 70 - 80 128 - 163 10 - 13 22 - 27 59 - 68 180 - 229 6 - 7 27 - 34
68° 2.2 71 - 82 158 - 201 13 - 16 21 - 26 63 - 72 184 - 234 8 - 10 29 - 37
2.8 71 - 82 153 - 195 10 - 13 21 - 26 64 - 74 186 - 237 6 - 8 29 - 37
75° 2.2 72 - 83 175 - 223 13 - 16 20 - 26 67 - 77 187 - 238 9 - 11 30 - 38
2.8 72 - 83 170 - 217 10 - 13 20 - 26 68 - 79 189 - 240 7 - 9 30 - 39
86° 2.2 74 - 85 204 - 259 13 - 16 19 - 25 71 - 81 194 - 247 9 - 12 32 - 40
2.8 74 - 85 199 - 253 10 - 13 20 - 25 72 - 83 196 - 249 7 - 9 32 - 41
95° 2.2 75 - 86 235 - 299 12 - 16 19 - 24
2.8 75 - 86 230 - 293 10 - 12 19 - 24
015 (60 HZ)
012 (50 HZ)
35° 2.8 43 - 49 166 - 211 5 - 6 20 - 26
3.5 44 - 51 167 - 213 4 - 5 21 - 26
45° 2.8 69 - 79 117 - 149 12 - 16 21 - 27 52 - 60 179 - 227 6 - 8 23 - 30
3.5 68 - 79 112 - 143 10 - 13 21 - 27 54 - 62 180 - 230 5 - 6 24 - 30
55° 2.8 70 - 80 127 - 162 12 - 15 21 - 26 62 - 72 191 - 244 7 - 9 27 - 34
3.5 69 - 80 123 - 156 10 - 12 20 - 26 64 - 73 193 - 246 6 - 8 27 - 35
68° 2.8 71 - 82 151 - 192 12 - 15 20 - 25 74 - 85 207 - 264 8 - 11 31 - 39
3.5 71 - 82 147 - 187 9 - 12 20 - 25 75 - 87 209 - 266 7 - 9 31 - 39
75° 2.8 72 - 83 168 - 213 11 - 15 19 - 25 79 - 91 214 - 272 9 - 11 32 - 41
3.5 72 - 83 164 - 208 9 - 12 19 - 25 80 - 92 216 - 275 7 - 9 33 - 41
86° 2.8 74 - 85 199 - 254 11 - 14 19 - 24 83 - 96 215 - 274 10 - 12 34 - 43
3.5 73 - 84 194 - 247 9 - 11 19 - 24 84 - 97 217 - 276 8 - 10 34 - 43
95° 2.8 75 - 86 228 - 291 11 - 14 18 - 23
3.5 75 - 86 222 - 283 9 - 11 18 - 23
Operation Pressures