G71Mpp−60D−135 Blower Performance Single Side Return Air - Lennox G71MPP SERIES Unit Information

G71MPP−60D−135 BLOWER PERFORMANCE (less filter) −− Single Side Return Air
(Air volumes in bold require field fabricated transition to accommodate 20 x 25 x 1 in. cleanable air filter
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−60D−135 BLOWER MOTOR WATTS − COOLING
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 90 110
Medium−Low 105 130
Medium−High 150 175
High 195 230
Default Cool CFM
Low 70 90
Medium−Low 80 100
Medium−High 120 140
High 145 175
Decrease (–10%) Cool CFM
Low 60 75
Medium−Low 60 75
Medium−High 90 110
High 120 140
in order to maintain proper air velocity across the filter.)
0 through 0.80 in. w.g. External Static Pressure Range
40%
995
930
865
805
735
First Stage Cool Speed − cfm
Medium− Medium
Low
Low
1105 1180
990 1075
890 950
Motor Watts @ Various External Static Pressures − in. wg.
First Stage
140 170 195 220 240
165 195 215 235 260
205 235 270 300 330
270 305 340 375 410
115 135 165 190 210
130 160 185 210 230
170 195 225 255 280
215 250 280 315 345
95 115 135 150 175
100 125 150 175 195
140 165 190 215 235
170 195 225 255 275
Page 13
TABLE 10
Heating Input Range and Blower Volume − CFM
50% 60% 70%
1160 1325 1490
1075 1225 1370
1005 1145 1280
930 1060 1185
850 970 1090
Blower Speed Selections
High
Low
High (Default)
1330 1500 1585
1210 1355 1430
1085 1210 1275
0 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
265 290 230 265
290 315 285 330
360 385 425 465
445 480 605 650
230 245 170 200
255 275 245 270
305 330 350 385
375 410 455 500
195 220 140 160
215 235 145 180
255 270 230 265
300 325 330 365
80% 90%
1640 1790
1520 1670
1425 1570
1325 1470
1215 1345
Second Stage Cool Speed − cfm
Medium− Medium
Low High
1705 1905
1545 1765
1370 1565
Second Stage
310 355 390 425 460
380 430 455 485 525
515 560 605 645 685
695 740 800 855 900
235 265 305 345 380
305 335 370 410 440
420 455 495 530 570
555 605 645 680 725
185 205 240 280 305
215 250 290 325 355
305 345 380 420 450
405 445 485 525 560
100%
1940
1825
1715
1610
1470
High
(Default)
2130
1975
1755
490 525
565 605
730 770
945 985
420 455
470 505
610 645
770 810
335 360
385 420
480 510
595 635