Lennox G71MPP-36B-070 Installation Instructions Manual page 45

TABLE 26
G71 MPP-60C-110 BLOWER PERFORMAN CE (less filter)
Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side
0 through 0.80 in. w.g. External Static Pressure Range
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
Heating Input Range and Blower Volume - CFM
50%
1050
975
96O
86O
79O
60%
1215
1125
1075
99O
910
80%
1535
1430
1335
1250
1145
90%
1695
1585
1480
1380
1260
COOLING BLOWER PERFORMANCE
Blower Speed Selections
Cooling Adjust CFM First Stage Cool Speed - cfm Second Stage Cool Speed - cfm
Selections Medium- Medium High Medium- Medium High
Low Low High (Default) Low Low High (Default)
Increase (+10%) Cool CFM 945 1020 1160 1300 1625 1745 1990 2210
Default Cool CFM 840 910 1055 1180 1465 1580 1790 1995
Decrease (-10%) Cool CFM 740 800 920 1045 1290 1405 1605 1790
The effect of static pressure is included in air volumes shown,
Lennox Harmony Ill _ Zone Control Applications - Minimum blower speed is 450 cfm,
The following control 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 Perfomance 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
Motor Watts @ Various External Static Pressures - in. wg.
Blower Speed First Stage
10.1010.2010.3010.4010.5010.6010.7010.80 0 10.1010.2010.3oOndS/a0.5010.6010.7010.80sectge
Options
0 10.40
Increase (+10%) Cool CFM
Low 75 90 115 135 160 180 200 220 240 280 315 350 390 430 475 510 550 585
Medium-Low 90 105 130 150 175 200 220 245 270 340 380 425 465 505 545 575 610 645
Medium-High 120 140 170 195 225 250 275 300 330 510 545 585 620 675 735 770 805 840
High 160 185 210 235 265 290 325 360 395 710 755 805 855 905 950 980 101 1035
Default Cool CFM
Low 55 70 90 110 135 155 175 195 215 205 235 275 310 345 380 415 450 485
Medium-Low 75 90 105 125 150 170 190 215 235 250 285 325 360 400 440 470 505 540
Medium-High 95 115 135 160 190 220 240 265 285 375 410 445 485 530 575 605 635 670
High 125 150 175 200 225 255 280 305 335 510 550 595 640 685 725 770 815 860
Decrease (-10%) Cool CFM
Low 45 60 80 100 115 125 145 160 180 155 180 210 240 270 295 325 355 385
Medium-Low 55 70 85 105 125 150 165 185 200 185 215 245 280 315 345 380 415 450
Medium-High 70 85 105 125 150 170 195 215 235 265 300 345 385 425 465 500 535 570
High 95 110 135 160 190 220 240 260 280 375 415 455 495 535 575 615 650 690
Page 45