Lennox LCH036 Installation Instructions Manual page 177

TABLE 13
LGH/LCH480H - R410A - CAV
Circuit 1 Circuit 2
Outdoor
Coil En­
DIs Suc Dis
tering Air
+10 +5 +10
Temp psig psig psig
65_F* 231 127 296
75_F 292 134 336
85_F 322 135 380
95_F 386 137 434
105_F 436 143 487
115_F 500 146 546
TABLE 14
LGH/LCH480H - R410A - VFD
Circuit 1 Circuit 2
Outdoor
Coil En­
DIs Suc Dis
tering Air
+10 +5 +10
Temp psig psig psig
65_F* 250 121 283
75_F 301 124 324
85_F 331 136 371
95_F 390 130 420
105_F 428 131 477
115_F 479 134 537
TABLE 15
LGH/LCH540S - R410A - CAV
Circuit 1 Circuit 2
Outdoor
Coil En­
DIs Suc Dis
tering Air
+10 +5 +10
Temp psig psig psig
65_F* 291 122 308
75_F 326 126 350
85_F 375 129 400
95_F 412 132 440
105_F 464 134 494
115_F 506 136 539
TABLE 16
LGH/LCH540S - R410A - VFD
Circuit 1 Circuit 2
Outdoor
Coil En­
DIs Suc Dis
tering Air
+10 +5 +10
Temp psig psig psig
65_F* 285 119 324
75_F 329 121 368
85_F 391 125 418
95_F 454 127 476
105_F 497 130 525
115_F 554 133 580
TABLE 17
LGH/LCH600S - R410A - CAV
Circuit 1 Circuit 2
Outdoor
Coil En­
DIs Suc Dis
tering Air
+10 +5 +10
Temp psig psig psig
65_F* 258 123 336
75_F 316 125 375
85_F 376 129 422
95_F 425 132 466
105_F 478 134 533
115_F 535 137 596
507232-02 9/2015
Circuit 3 Circuit 4
Suc DIs Suc DIs
+5 +10 +5 +10
psig psig psig psig
133 264 130 369
135 301 132 293
137 344 135 343
139 390 136 373
142 442 139 433
144 496 141 487
Circuit 3 Circuit 4
Suc DIs Suc DIs
+5 +10 +5 +10
psig psig psig psig
124 267 140 273
126 305 142 306
127 349 143 355
131 398 146 389
132 456 147 459
134 516 149 522
Circuit 3 Circuit 4
Suc DIs Suc DIs
+5 +10 +5 +10
psig psig psig psig
127 300 125 295
129 335 128 330
133 385 133 380
136 423 134 423
138 475 136 469
140 520 138 506
Circuit 3 Circuit 4
Suc DIs Suc DIs
+5 +10 +5 +10
psig psig psig psig
124 320 138 310
125 355 139 350
128 400 142 400
129 460 144 450
133 515 145 500
136 570 147 555
Circuit 3 Circuit 4
Suc DIs Suc DIs
+5 +10 +5 +10
psig psig psig psig
126 291 125 298
127 324 126 316
130 369 129 362
132 414 131 395
134 469 133 444
138 530 136 509
Circuit 1
Outdoor
Coil En­
Suc DIs
tering Air
+5 +10
psig Temp psig
130 65_F* 251
131 75_F 304
132 85_F 343
133 95_F 398
137 105_F 445
139 115_F 490
E-Charge Verification - Approach Method - AHRI
Suc
TESTING
+5
psig
1-Using the
140
temperature to outdoor ambient temperature.
142
Approach Temperature = Liquid temperature (at
144
condenser outlet) minus ambient temperature.
147
148
2-Approach temperature should match values in table 19.
150
An approach temperature greater than value shown
indicates an undercharge. An approach temperature
less than value shown indicates an overcharge.
Suc
3-The approach method is not valid for grossly over or
+5
undercharged systems. Use tables 7 through 18 as a
psig
125
guide for typical operating pressures.
127
132
134
137
420S, 480S
138
420H , 480H, 600S
540S
Suc
420S, 540S
+5
psig
420H, 480H,
139
480S
140
600S
142
144
147
149
Suc
+5
psig
124
125
127
129
131
134
Page 33
TABLE 18
LGH/LCH600S - R410A - VFD
Circuit 2 Circuit 3
Suc Dis Suc DIs
+5 +10 +5 +10
psig psig psig psig
109 300 111 297
111 342 113 338
114 388 115 382
117 433 117 433
119 489 119 485
122 545 121 537
same thermometer,
TABLE 19
APPROACH TEMPERATURES
CONSTANT AIR VOLUME
Unit
Approach Temperature
8°F + 1 (4.4 + 0.5)
6°F + 1 (3.3 + 0.5)
7°F + 1 (3.9 + 0.5)
VARIABLE AIR VOLUME
8°F + 1 (4.4 + 0.5)
6°F + 1 (3.3 + 0.5)
9°F + 1 (5.0 + 0.5)
7°F + 1 (3.9 + 0.5)
Circuit 4
Suc DIs Suc
+5 +10 +5
psig psig psig
135 295 135
136 335 137
139 384 140
141 424 142
142 477 144
145 521 146
compare liquid