Lennox XP14-018-230-06 Nstallation And Service Instructions page 31

Table 6. Normal Operating Pressures - Liquid +10 and Vapor +5 PSIG* (XP14-XXX-230-01 through 07)
Use table 8 as a general guide when performing maintenance checks. This is not a procedure for charging the unit (Refer
to Charging / Checking Charge section). Minor variations in these pressures may be expected due to differences in instal­
lations. Significant differences could mean that the system is not properly charged or that a problem exists with some
component in the system.
XP14-018
5F (5C)**
Liquid / Vapor
60 (15) 346 / 139
50 (10) 323 / 117
40 (4) 306 / 98
30 (-1) 278 / 84
20 (-7) 273 / 66
65 (18) 226 / 140
70 (21) 244 / 141
75 (24) 263 / 142
80 (27) 283 / 143
85 (29) 302 / 144
90 (32) 328 / 145
95 (35) 351 / 146
100 (38) 376 / 147
105 (41) 402 / 148
110 (38) 430 / 149
115 (45) 465 / 150
*IMPORTANT—These are most popular match-up pressures. Indoor match up, indoor air quality, and indoor load cause pressures to vary.
**Temperature of the air entering the outside coil.
IMPORTANT
XP14-024 XP14-030
Liquid / Vapor Liquid / Vapor
352 / 138 338 / 137
331 / 114 334 / 112
304 / 99 312 / 93
299 / 80 302 / 74
283 / 66 280 / 53
233 / 137 238 / 138
252 / 138 263 / 139
271 / 140 279 / 139
292 / 141 299 / 140
314 / 142 324 / 141
338 / 143 340 / 142
361 / 145 375 / 145
387 / 146 397 / 145
412 / 147 424 / 147
441 / 148 454 / 150
471 / 151 485 / 150
XP14-036 XP14-042
Liquid/ Vapor Liquid / Vapor
Heating
350 / 134 373 / 139
331 / 117 363 / 117
313 / 97 348 / 97
298 / 83 336 / 74
284 / 66 322 / 64
Cooling
220 / 138 223 / 125
236 / 140 241 / 130
256 / 141 261 / 134
276 / 142 282 / 138
298 / 143 302 / 139
321 / 144 326 / 140
344 / 144 349 / 141
369 / 146 374 / 142
394 / 147 399 / 143
421 / 148 428 / 145
449 / 149 455 / 146
Page 31
XP14-048 XP14-060
Liquid / Vapor Liquid / Vapor
355 / 130 351 / 117
336 / 113 333 / 105
315 / 88 316 / 88
296 / 72 308 / 70
286 / 64 300 / 61
231 / 136 243 / 136
248 / 139 263 / 137
271 / 140 282 / 138
291 / 142 306 / 139
312 / 143 327 / 140
335 / 144 351 / 141
359 / 145 376 / 142
384 / 146 401 / 143
411 / 148 426 / 145
439 / 149 452 / 146
468 / 150 484 / 148
XP14 SERIES