G71Mpp−60C−110 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−110 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 75 90
Medium−Low 90 105
Medium−High 120 140
High 160 185
Default Cool CFM
Low 55 70
Medium−Low 75 90
Medium−High 95 115
High 125 150
Decrease (–10%) Cool CFM
Low 45 60
Medium−Low 55 70
Medium−High 70 85
High 95 110
G71MPP−60C−110 BLOWER PERFORMANCE (less filter)
0 through 0.80 in. w.g. External Static Pressure Range
40%
890
845
800
735
670
First Stage Cool Speed − cfm
Medium− Medium
Low
Low
945 1020
840 910
740 800
Motor Watts @ Various External Static Pressures − in. wg.
First Stage
115 135 160 180 200
130 150 175 200 220
170 195 225 250 275
210 235 265 290 325
90 110 135 155 175
105 125 150 170 190
135 160 190 220 240
175 200 225 255 280
80 100 115 125 145
85 105 125 150 165
105 125 150 170 195
135 160 190 220 240
Page 9
TABLE 6
Heating Input Range and Blower Volume − CFM
50% 60% 70%
1050 1215 1375
975 1125 1275
960 1075 1190
860 990 1120
790 910 1030
Blower Speed Selections
High
Low
High (Default)
1160 1300 1625
1055 1180 1465
920 1045 1290
0 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
220 240 280 315
245 270 340 380
300 330 510 545
360 395 710 755
195 215 205 235
215 235 250 285
265 285 375 410
305 335 510 550
160 180 155 180
185 200 185 215
215 235 265 300
260 280 375 415
80% 90%
1535 1695
1430 1585
1335 1480
1250 1380
1145 1260
Second Stage Cool Speed − cfm
Medium− Medium
Low High
1745 1990
1580 1790
1405 1605
Second Stage
350 390 430 475 510
425 465 505 545 575
585 620 675 735 770
805 855 905 950 980 1010 1035
275 310 345 380 415
325 360 400 440 470
445 485 530 575 605
595 640 685 725 770
210 240 270 295 325
245 280 315 345 380
345 385 425 465 500
455 495 535 575 615
100%
1855
1740
1625
1510
1375
High
(Default)
2210
1995
1790
550 585
610 645
805 840
450 485
505 540
635 670
815 860
355 385
415 450
535 570
650 690