Lennox CBX40UHV Series Installation And Service Procedure page 6

CBX40UHV­042 BLOWER PERFORMANCE
0 through 0.80 in. W.g. External Static Pressure Range
"AJUST"
Jumper Setting
+
NORM
-
NOTES:
S
The effect of static pressure, filter and electric heater resistance is included in the air volumes listed.
S
First stage cooling air volume is 70% of COOL speed settings. Continuous fan speed is approximately 28%, 38%, 70% and 100% (Jumper
selectable) of the same second­stage COOL speed selected, minimum 450 cfm.
S
Lennox Harmony III™ Zone Control applications - minimum blower speed if 450 cfm.
CBX40UHV‐042 BLOWER MOTOR WATTS AT "+" (Plus) AHC SETTING ("Adjust" Jumper at "+" Setting)
AHC Jumper Speed
Positions
HEAT SPEED
TAP 1
TAP 2
TAP 3
TAP 4
COOL SPEED
TAP 1
TAP 2
TAP 3
TAP 4
CBX40UHV‐042 BLOWER MOTOR WATTS AT "NORM" AHC SETTING ("Adjust" Jumper at NORM Setting)
AHC Jumper Speed
Positions
"HEAT" SPEED
TAP 1
TAP 2
TAP 3
TAP 4
COOL SPEED
TAP 1
TAP 2
TAP 3
TAP 4
CBX40UHV‐042 BLOWER MOTOR WATTS AT "-" (Minus) AHC SETTING ("Adjust" Jumper at "-" Setting)
AHC Jumper Speed
Positions
HEAT SPEED
TAP 1
TAP 2
TAP 3
TAP 4
COOL SPEED TAP 1
TAP 2
TAP 3
TAP 4
"HEAT" Speed
1 2
cfm cfm
1100 1320 1540
1000 1200 1400
900 1080 1260
Motor Watts @ Various External Static Pressures - in. wg.
0 0.1 0.2
124 154 177
179 227 255
294 339 387
405 456 510
122 146 173
186 230 254
284 335 387
413 475 517
Motor Watts @ Various External Static Pressures - in. wg.
0 0.1 0.2
97 123 146
144 180 209
226 259 307
323 369 401
93 118 142
148 179 207
229 263 298
327 375 403
Motor Watts @ Various External Static Pressures - in. wg.
0 0.1 0.2
80 105 128
113 144 172
168 198 238
239 285 315
76 100 123
115 145 169
166 199 236
241 289 321
Jumper Speed Positions
3 4
cfm cfm cfm
1760 1100
1600 1000
1440 900
0.3 0.4
204 240
287 336
425 463
553 607
198 224
289 332
413 455
570 632
0.3 0.4
179 205
230 266
342 380
449 491
166 197
231 268
332 386
448 489
0.3 0.4
148 173
193 219
265 293
362 398
148 169
190 217
263 296
366 396
Page 6
"COOL" Speed
1 2 3
cfm cfm
1320 1540
1200 1400
1080 1260
0.5 0.6
260 296
356 394
489 518
647 686
259 292
361 404
483 526
569 715
0.5 0.6
225 258
295 334
405 448
516 563
225 247
311 333
408 446
523 557
0.5 0.6
206 233
265 286
332 368
428 465
203 230
258 288
330 380
431 472
4
cfm
1760
1600
1440
0.7 0.8
326 363
451 486
550 600
743 777
329 360
438 477
551 600
750 782
0.7 0.8
292 327
375 410
482 525
593 640
280 314
377 405
484 534
589 646
0.7 0.8
265 287
312 349
415 442
503 544
260 279
315 349
415 449
505 544
CBX40UHV