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

G71MPP−60D−135 BLOWER PERFORMANCE (less filter) −− Side Return Air with Optional RAB Return Air Base
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 − Side Return Air with Optional RAB Return Air Base
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 145 170
High 200 230
Default Cool CFM
Low 70 90
Medium−Low 90 105
Medium−High 115 140
High 145 175
Decrease (–10%) Cool CFM
Low 60 75
Medium−Low 70 90
Medium−High 85 105
High 120 140
0 through 0.80 in. w.g. External Static Pressure Range
40%
1020
950
885
820
745
First Stage Cool Speed − cfm
Medium− Medium
Low
Low
1080 1155
985 1055
875 945
Motor Watts @ Various External Static Pressures − in. wg.
First Stage
140 165 190 210 235
160 190 210 230 255
205 235 265 290 325
270 305 345 385 415
115 140 165 190 210
125 150 175 200 225
170 195 225 250 275
205 240 270 295 330
95 115 135 155 175
110 130 150 170 195
130 155 180 205 230
170 195 220 240 270
TABLE 11
Heating Input Range and Blower Volume − CFM
50% 60% 70%
1180 1340 1500
1095 1245 1395
1020 1160 1300
945 1075 1200
870 990 1110
Blower Speed Selections
High
Low
High (Default)
1310 1480 1550
1190 1325 1400
1060 1190 1250
0 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
260 285 235 265
285 310 290 325
355 390 420 460
445 480 580 630
230 250 170 200
250 270 200 230
300 325 330 365
365 395 435 480
195 215 135 155
215 235 160 185
250 270 220 255
295 325 330 365
Page 14
80% 90%
1650 1800
1535 1680
1435 1575
1335 1475
1230 1350
Second Stage Cool Speed − cfm
Medium− Medium
Low High
1660 1875
1510 1720
1345 1530
Second Stage
305 340 380 415 450
370 410 450 490 515
510 555 595 640 680
690 745 800 850 895
235 270 305 335 370
270 310 355 400 435
400 440 485 525 555
530 580 625 675 715
180 205 240 280 305
215 240 275 310 345
295 335 370 410 440
400 440 480 525 555
100%
1955
1825
1715
1610
1470
High
(Default)
2105
1920
1715
480 515
545 575
715 755
935 975
400 430
465 495
585 615
750 790
330 355
375 410
475 510
585 615