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WSHP-SVX04A-EN 27
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 OP-1: Operating pressures and temperature for PSC motor
Units with PSC motors Operating Data
Cooling Heating
Model Entering
Water Temp,
°F
Water
Flow
GPM
Suction Pres-
sure,
PSIG
Discharge
Pressure,
PSIG
Water
Tem p
Rise, °F
Air Temp
Drop, °FDB
Suction Pres-
sure,
PSIG
Discharge
Pressure,
PSIG
Water Temp
Drop, °F
Air Temp
Rise,
°FDB
WPVJ 018 35 4 42 - 49 176 - 224 2 - 2 21 - 27
WPVJ 018 35 5 43 - 50 177 - 226 2 - 2 22 - 28
WPVJ 018 45 4 66 - 76 101 - 129 11 - 14 20 - 25 51 - 58 188 - 239 3 - 3 25 - 31
WPVJ 018 45 5 66 - 76 98 - 125 9 - 11 20 - 26 52 - 60 189 - 241 2 - 3 25 - 32
WPVJ 018 55 4 69 - 79 119 - 152 11 - 14 20 - 25 59 - 68 199 - 253 3 - 4 28 - 35
WPVJ 018 55 5 68 - 78 116 - 147 9 - 11 20 - 25 60 - 70 200 - 255 3 - 3 29 - 36
WPVJ 018 68 4 71 - 82 146 - 186 11 - 13 19 - 24 70 - 81 212 - 270 4 - 5 32 - 40
WPVJ 018 68 5 71 - 81 142 - 181 8 - 11 19 - 24 72 - 82 214 - 273 3 - 4 33 - 42
WPVJ 018 75 4 72 - 83 162 - 207 10 - 13 18 - 24 76 - 88 220 - 280 4 - 5 34 - 43
WPVJ 018 75 5 72 - 82 158 - 201 8 - 11 19 - 24 78 - 90 222 - 282 4 - 5 35 - 44
WPVJ 018 86 4 73 - 84 191 - 243 10 - 13 18 - 23 86 - 99 232 - 295 5 - 6 37 - 47
WPVJ 018 86 5 73 - 84 186 - 237 8 - 11 18 - 23 88 - 101 234 - 298 4 - 5 38 - 49
WPVJ 018 95 4 74 - 85 217 - 277 10 - 13 17 - 22
WPVJ 018 95 5 74 - 85 212 - 270 8 - 10 17 - 22
WPVJ 024 35 4.88 42 - 49 177 - 225 3 - 4 21 - 27
WPVJ 024 35 6.1 43 - 49 178 - 227 3 - 3 22 - 27
WPVJ 024 45 4.88 64 - 74 103 - 132 11 - 13 19 - 24 51 - 58 187 - 238 4 - 5 24 - 30
WPVJ 024 45 6.1 64 - 73 100 - 128 9 - 11 19 - 25 51 - 59 189 - 240 3 - 4 25 - 31
WPVJ 024 55 4.88 68 - 78 120 - 153 11 - 13 19 - 24 60 - 68 197 - 251 4 - 6 27 - 34
WPVJ 024 55 6.1 67 - 77 117 - 149 8 - 11 19 - 24 60 - 69 199 - 253 4 - 5 27 - 35
WPVJ 024 68 4.88 71 - 82 147 - 187 10 - 13 18 - 23 71 - 82 210 - 268 5 - 7 30 - 39
WPVJ 024 68 6.1 71 - 81 143 - 182 8 - 11 18 - 23 72 - 83 212 - 270 4 - 5 31 - 40
WPVJ 024 75 4.88 72 - 83 164 - 208 10 - 13 18 - 22 77 - 89 218 - 277 6 - 7 32 - 41
WPVJ 024 75 6.1 72 - 83 159 - 202 8 - 11 18 - 23 78 - 90 220 - 280 5 - 6 33 - 42
WPVJ 024 86 4.88 74 - 85 193 - 245 10 - 13 17 - 22 86 - 99 229 - 292 6 - 8 35 - 45
WPVJ 024 86 6.1 74 - 85 187 - 238 8 - 11 17 - 22 87 - 100 232 - 295 5 - 7 36 - 46
WPVJ 024 95 4.88 75 - 87 219 - 279 10 - 13 17 - 21
WPVJ 024 95 6.1 75 - 87 213 - 271 8 - 11 17 - 22
WPVJ 030 35 5.76 43 - 50 163 - 207 4 - 5 21 - 26
WPVJ 030 35 7.2 43 - 50 164 - 209 3 - 4 21 - 27
WPVJ 030 45 5.76 63 - 72 103 - 131 11 - 14 19 - 24 51 - 59 172 - 219 4 - 5 23 - 29
WPVJ 030 45 7.2 61 - 71 98 - 125 9 - 11 19 - 24 52 - 59 173 - 221 4 - 5 24 - 30
WPVJ 030 55 5.76 68 - 79 121 - 154 11 - 14 18 - 23 59 - 68 179 - 228 5 - 6 26 - 32
WPVJ 030 55 7.2 67 - 77 116 - 148 9 - 11 18 - 24 60 - 68 181 - 230 4 - 5 26 - 33
WPVJ 030 68 5.76 72 - 83 148 - 188 11 - 14 18 - 23 68 - 78 188 - 239 6 - 7 28 - 36
WPVJ 030 68 7.2 72 - 83 142 - 181 9 - 11 18 - 23 69 - 79 189 - 241 5 - 6 29 - 37
WPVJ 030 75 5.76 74 - 85 164 - 209 11 - 14 17 - 22 73 - 83 193 - 246 6 - 8 30 - 38
WPVJ 030 75 7.2 73 - 85 158 - 201 9 - 11 18 - 22 73 - 84 195 - 248 5 - 6 30 - 39
WPVJ 030 86 5.76 76 - 87 192 - 244 11 - 14 17 - 22 78 - 90 199 - 253 7 - 8 32 - 40
WPVJ 030 86 7.2 76 - 87 185 - 235 9 - 11 17 - 22 78 - 90 200 - 254 5 - 7 32 - 41
WPVJ 030 95 5.76 77 - 89 217 - 276 11 - 14 17 - 21
WPVJ 030 95 7.2 77 - 89 209 - 266 9 - 11 17 - 21
WPVJ 036 35 6.88 41 - 47 162 - 206 4 - 5 20 - 25
WPVJ 036 35 8.6 42 - 48 162 - 206 3 - 4 21 - 26
WPVJ 036 45 6.88 66 - 76 109 - 138 11 - 14 19 - 25 50 - 57 170 - 217 5 - 6 22 - 29
WPVJ 036 45 8.6 66 - 75 105 - 134 9 - 12 19 - 25 51 - 58 170 - 217 4 - 5 23 - 29
WPVJ 036 55 6.88 71 - 81 126 - 161 11 - 14 19 - 24 59 - 68 180 - 229 6 - 7 25 - 32
WPVJ 036 55 8.6 70 - 81 122 - 155 9 - 12 19 - 24 60 - 69 180 - 229 5 - 6 26 - 33
WPVJ 036 68 6.88 74 - 85 154 - 195 11 - 14 18 - 24 71 - 82 192 - 244 7 - 8 29 - 37
WPVJ 036 68 8.6 73 - 84 148 - 188 9 - 11 19 - 24 72 - 83 192 - 244 5 - 7 30 - 38
WPVJ 036 75 6.88 75 - 86 170 - 217 11 - 14 18 - 23 77 - 89 198 - 251 7 - 9 31 - 39
WPVJ 036 75 8.6 74 - 86 164 - 209 9 - 11 18 - 23 78 - 90 198 - 252 6 - 7 31 - 40
WPVJ 036 86 6.88 77 - 88 200 - 255 11 - 14 18 - 22 85 - 97 206 - 262 8 - 10 33 - 42
WPVJ 036 86 8.6 76 - 88 193 - 246 9 - 11 18 - 23 86 - 99 206 - 263 6 - 8 33 - 43
WPVJ 036 95 6.88 78 - 90 228 - 290 11 - 14 17 - 22
WPVJ 036 95 8.6 78 - 89 220 - 280 9 - 11 17 - 22
Operating Pressures
WPVJ