G71Mpp−60C−110 Blower Performance - Single Side Return Air - Lennox G71MPP SERIES Unit Information

G71MPP−60C−110 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−60C−110 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 70 90
Medium−Low 85 105
Medium−High 115 135
High 155 175
Default Cool CFM
Low 60 75
Medium−Low 70 85
Medium−High 95 110
High 115 135
Decrease (–10%) Cool CFM
Low 45 60
Medium−Low 50 65
Medium−High 75 90
High 95 110
in order to maintain proper air velocity across the filter.)
0 through 0.80 in. w.g. External Static Pressure Range
40%
870
815
765
715
650
First Stage Cool Speed − cfm
Medium− Medium
Low
Low
935 1025
840 915
750 800
Motor Watts @ Various External Static Pressures − in. wg.
First Stage
110 130 150 165 185
125 150 170 190 215
160 185 210 230 255
195 220 250 285 310
90 110 125 145 165
105 125 140 160 180
130 150 175 200 225
165 190 215 235 260
80 100 110 125 140
85 100 120 135 155
105 120 140 160 185
135 155 175 200 225
TABLE 7
Heating Input Range and Blower Volume − CFM
50% 60% 70%
1030 1185 1345
955 1095 1240
900 1035 1170
840 965 1090
765 880 995
Blower Speed Selections
High
Low
High (Default)
1155 1285 1585
1050 1175 1435
925 1050 1280
0 0.10 0.20 0.30 0.40 0.50 0.60 0.70
210 230 255 295
235 255 340 375
285 310 455 500
335 360 650 710
185 205 195 230
200 220 225 265
245 265 365 400
285 310 495 535
155 170 155 180
175 195 170 200
210 235 250 290
250 270 365 405
Page 10
80% 90%
1490 1630
1380 1525
1305 1435
1210 1330
1110 1225
Second Stage Cool Speed − cfm
Medium− Medium
Low High
1700 1905
1535 1740
1385 1570
Second Stage
345 390 430 470 510
415 455 490 525 570
555 610 655 695 750
770 835 880 920 960
270 305 345 380 415
315 360 400 440 475
445 485 525 565 610
580 625 675 725 770
205 235 270 305 340
240 275 315 355 390
330 375 410 445 485
450 490 535 575 615
100%
1775
1670
1570
1450
1335
High
(Default)
2135
1930
1755
0.80
545 585
615 660
800 850
995 1035
455 490
515 555
650 690
815 860
370 400
420 455
525 570
655 690