Lennox XC21 Series User Manual

Page 31
XC21
Operating and Temperature Pressures
Minor variations in these pressures may be expected due to differences in installations. Significant differences could mean
that the system is not properly charged or that a problem exists with some component in the system.
IMPORTANT
Use this table to perform maintenance checks; it is not a procedure for charging the
system. Minor variations in these pressures may be due to differences in installations.
Significant deviations could mean that the system is not properly charged or that a
problem exists with some component in the system.
Table 4. Normal Operating Pressures (Liquid +10 and Suction +5 psig)* (−04 build)
XC21−XXX−230−04 Only
−024 −036 −048 −060
5F (5C)** Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor
First Stage (Low Capacity)
65 (18.3) 208 143 214 146 216 142 232 137
75 (23.9) 242 145 247 149 246 144 269 138
85 (29.4) 278 147 288 151 288 146 310 140
95 (35.0) 323 150 333 154 336 147 357 144
105 (40.6) 367 153 383 155 385 149 405 145
115 (46.1) 421 155 441 156 444 153 459 149
Second Stage (High Capacity)
65 (18.3) 209 139 218 141 220 137 236 138
75 (23.9) 242 140 252 141 254 139 281 133
85 (29.4) 274 142 294 144 297 141 323 135
95 (35.0) 325 145 339 147 344 144 370 138
105 (40.6) 373 147 389 150 394 144 421 141
115 (46.1) 419 149 447 152 452 147 476 144
XC21−XXX−230−05 and later
First Stage (Low Capacity)
65 (18.3) 209 144 211 142 215 140 229 134
75 (23.9) 242 145 244 144 250 142 264 137
85 (29.4) 281 146 285 146 288 144 306 140
95 (35.0) 324 148 330 149 338 146 353 144
105 (40.6) 372 151 380 151 387 149 405 146
115 (46.1) 426 152 436 154 459 152 468 146
Second Stage (High Capacity)
65 (18.3) 213 138 214 137 217 124 238 130
75 (23.9) 245 142 247 140 251 133 276 133
85 (29.4) 285 142 288 141 289 138 317 135
95 (35.0) 329 144 330 143 336 141 368 139
105 (40.6) 376 147 384 145 385 144 420 141
115 (46.1) 432 151 445 148 437 146 478 143
* Typical pressures only, expressed in psig (liquid +/− 10 and vapor+/− 5 psig); indoor match up, indoor air quality, and indoor load will cause the
pressures to vary. These operating pressures are also listed on the unit charging sticker (401104S) located on the unit access panel.
** Temperature of air entering outdoor coil.

Lennox XC21 Series Specifications

General

Brand	Lennox
Model	XC21 Series
Category	Air Conditioner
Language	English