Lennox G71MPP, Unit Information

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TABLE 9
G71MPP−60D−135 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
Heating Input Range and Blower Volume − CFM
40% 50% 60% 70% 80% 90% 100%
Increase (+15%) Heat CFM 1045 1220 1390 1565 1725 1885 2045
Increase (+7.5%) Heat CFM 975 1130 1290 1450 1600 1750 1900
Default Heat CFM 900 1045 1195 1340 1495 1650 1805
Decrease (–7.5% ) Heat CFM 840 975 1110 1250 1390 1535 1675
Decrease (–15% ) Heat CFM 760 890 1020 1145 1275 1405 1535
COOLING BLOWER PERFORMANCE
Cooling Adjust CFM
Selections
Blower Speed Selections
First Stage Cool Speed − cfm Second Stage Cool Speed − cfm
Low
Medium−
Low
Medium
High
High
(Default)
Low
Medium−
Low
Medium
High
High
(Default)
Increase (+10%) Cool CFM 1135 1205 1365 1540 1615 1730 1945 2190
Default Cool CFM 1025 1105 1235 1390 1455 1580 1780 1985
Decrease (–10%) Cool CFM 915 985 1115 1235 1305 1400 1600 1780
The effect of static pressure is included in air volumes shown.
Lennox Harmony III
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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−60D−135 BLOWER MOTOR WATTS − COOLING
Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side
Blower Speed
Options
Motor Watts @ Various External Static Pressures − in. wg.
First Stage Second Stage
0 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
Increase (+10%) Cool CFM
Low 95 120 145 170 190 215 240 265 290 250 285 320 360 390 420 450 485 515
Medium−Low 115 135 160 185 210 235 260 290 315 290 330 375 420 455 490 525 565 605
Medium−High 145 175 215 250 275 300 330 355 385 425 465 505 550 590 635 670 710 750
High 205 240 280 320 350 380 410 445 480 615 655 700 745 800 855 900 940 980
Default Cool CFM
Low 80 95 115 135 160 190 210 230 255 185 215 245 280 310 335 370 400 430
Medium−Low 90 115 140 165 190 215 230 250 265 230 260 295 335 370 405 435 470 500
Medium−High 130 150 170 195 225 255 275 300 320 315 355 400 445 480 515 555 590 625
High 150 180 220 255 285 315 345 375 405 445 485 530 580 625 670 705 740 775
Decrease (–10%) Cool CFM
Low 65 80 100 120 140 160 180 195 215 145 170 195 225 250 280 305 330 355
Medium−Low 70 90 110 130 155 175 200 220 240 160 190 225 255 285 315 345 380 415
Medium−High 95 120 145 170 190 215 235 250 270 245 280 315 355 385 415 445 480 515
High 135 155 175 200 220 245 270 300 325 325 365 405 445 485 520 550 580 610