G71Mpp−60C−090 Blower Performance (Less Filter) - Lennox G71MPP SERIES Unit Information

Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side
HEATING BLOWER PERFORMANCE
Heating Adjust CFM Selections
Increase (+15%) Heat CFM
Increase (+7.5%) Heat CFM
Default Heat CFM
Decrease (–7.5% ) Heat CFM
Decrease (–15% ) Heat CFM
COOLING BLOWER PERFORMANCE
Cooling Adjust CFM
Selections
Increase (+10%) Cool CFM
Default Cool CFM
Decrease (–10%) Cool CFM
The effect of static pressure is included in air volumes shown.
Lennox Harmony IIIt Zone Control Applications − Minimum blower speed is 450 cfm.
The following control board configurations are available. See Installation Instructions for details and DIP switch settings.
Heat Mode (Heating Blower Performance Table):
With a single−stage thermostat, furnace will operate at three, staged rates (40/70/100%) with a time delay between each stage (values in grey−shaded
columns).
With two−stage thermostat there are two modes available.
Traditional two−stage mode − W1 demand results in 70% firing rate. W2 results in 100% firing rate. No delay between stages. (values shown in 70%
and 100% grey−shaded columns only).
Variable Rate Capacity Mode − furnace automatically adjusts firing rate based on first− and second−stage cycle times. (all columns)
Cool Mode (Cooling Blower Performance table):
First stage COOL (two−stage air conditioning units only) is approximately 70% of the same second stage COOL speed position.
Continuous Fan speeds are approximately 28%, 38%, 70% and 100% (DIP switch selectable) of the same second−stage COOL speed position
minimum 450 cfm.
G71MPP−60C−090 BLOWER MOTOR WATTS − COOLING
Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side
Blower Speed
Options
0 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
Increase (+10%) Cool CFM
Low 115 135
Medium−Low 145 165
Medium−High 170 200
High 265 295
Default Cool CFM
Low 90 110
Medium−Low 110 130
Medium−High 145 165
High 180 205
Decrease (–10%) Cool CFM
Low 70 85
Medium−Low 80 100
Medium−High 110 130
High 155 175
G71MPP−60C−090 BLOWER PERFORMANCE (less filter)
0 through 0.80 in. w.g. External Static Pressure Range
40%
665
600
615
520
465
First Stage Cool Speed − cfm
Medium− Medium
Low
Low
1105 1185
995 1080
890 960
Motor Watts @ Various External Static Pressures − in. wg.
First Stage
160 185 205 230 255
190 215 240 265 285
240 275 305 335 370
330 365 400 435 465
130 155 175 195 215
155 180 200 220 245
190 215 245 270 295
240 270 300 330 365
105 125 145 165 185
120 140 165 190 210
160 185 205 225 250
195 220 245 270 295
TABLE 3
Heating Input Range and Blower Volume − CFM
50% 60% 70%
800 935 1070
730 860 990
715 820 920
630 740 850
565 665 765
Blower Speed Selections
High
Low
High (Default)
1355 1545 1605
1205 1345 1440
1090 1215 1275
0 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
275 300 305 340
305 325 355 390
400 430 510 555
500 535 725 780
235 255 220 250
265 285 270 305
320 340 390 425
395 430 540 580
205 225 160 190
225 245 195 225
275 300 295 330
315 340 400 435
Page 6
80% 90%
1205 1335
1110 1235
1035 1150
960 1070
870 970
Second Stage Cool Speed − cfm
Medium− Medium
Low High
1710 1925
1560 1755
1380 1590
Second Stage
375 410 440 475 505
430 470 510 550 580
600 645 690 730 765
835 895 935 975 1005 1035 1065
285 320 350 385 415
345 385 420 455 485
465 500 540 580 610
625 670 710 755 795
220 255 275 300 330
260 295 325 350 385
365 400 430 460 495
470 510 545 585 610
100%
1470
1355
1265
1180
1075
High
(Default)
2165
1960
1755
535 565
610 635
795 830
450 485
515 545
640 670
830 870
360 390
415 450
535 570
640 665