TABLE 23
G71MPP-60C-090 BLOWER PERFORMANCE (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
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Heating Input Ran
50% 60%
800 935
730 860
715 820
630 740
565 665
e and Blower Volume - CFM
80%
1205
1110
1035
96O
87O
90%
1335
1235
1150
1070
97O
COOLING BLOWER PERFORMANCE
Blower Speed Selections
Cooling Adjust CFM First Stage Cool Speed - cfm Second Stage Cool Speed - cfm
Selections Medium- Medium High I Medium- I Medium I High
Low Low High (Default) Low Low High (Default)
Increase (+10%) Cool CFM 1105 1185 1355 1545 1605 1710 1925 2165
Default Cool CFM 995 1080 1205 1345 1440 1560 1755 1960
Decrease (-10%) Cool CFM 890 960 1090 1215 1275 1380 1590 1755
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-090 BLOWER MOTOR WATTS - COOLING
Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side
I Motor Watts @ Various External Static Pressures-in. wg.
Blower Speed First Stage
/
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Options
0 10.40
Increase (+10%) Cool CFM
Low 115 135 160 185 205 230 255 275 300 305 340 375 410 440 475 505 535 565
Medium-Low 145 165 190 215 240 265 285 305 325 355 390 430 470 510 550 580 610 635
Medium-High 170 200 240 275 305 335 370 400 430 510 555 600 645 690 730 765 795 830
High 265295330365400435465500535725780835895935975 100 1031065
Default Cool CFM
Low 90 110 130 155 175 195 215 235 255 220 250 285 320 350 385 415 450 485
Medium-Low 110 130 155 180 200 220 245 265 285 270 305 345 385 420 455 485 515 545
Medium-High 145 165 190 215 245 270 295 320 340 390 425 465 500 540 580 610 640 670
High 180 205 240 270 300 330 365 395 430 540 580 625 670 710 755 795 830 870
Decrease (-10%) Cool CFM
Low 70 85 105 125 145 165 185 205 225 160 190 220 255 275 300 330 360 390
Medium-Low 80 100 120 140 165 190 210 225 245 195 225 260 295 325 350 385 415 450
Medium-High 110 130 160 185 205 225 250 275 300 295 330 365 400 430 460 495 535 570
High 155 175 195 220 245 270 295 315 340 400 435 470 510 545 585 610 640 665
Page 42
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