G71Mpp−36C−090 Blower Performance (Less Filter) - Lennox G71MPP SERIES Unit Information

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 250 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 250 cfm.
G71MPP−36C−090 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 35 50
Medium−Low 45 60
Medium−High 60 75
High 65 85
Default Cool CFM
Low 35 45
Medium−Low 40 55
Medium−High 45 60
High 50 65
Decrease (–10%) Cool CFM
Low 30 40
Medium−Low 40 50
Medium−High 40 55
High 45 60
G71MPP−36C−090 BLOWER PERFORMANCE (less filter)
0 through 0.80 in. w.g. External Static Pressure Range
40%
650
620
590
555
525
First Stage Cool Speed − cfm
Medium− Medium
Low
Low
705 790
650 730
600 670
Motor Watts @ Various External Static Pressures − in. wg.
First Stage
70 90 105 125 140
80 100 125 150 170
95 110 135 160 180
110 135 160 180 205
60 75 95 115 130
70 90 110 130 150
80 95 115 135 155
85 105 130 155 180
55 75 90 105 120
65 80 100 120 130
70 90 105 125 140
75 90 115 135 155
Page 5
TABLE 2
Heating Input Range and Blower Volume − CFM
50% 60% 70%
740 825 910
695 775 850
655 725 790
615 680 740
575 630 680
Blower Speed Selections
High
Low
High (Default)
845 920 1020
770 830 905
705 750 800
0 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80
160 175 85 110
185 205 125 155
200 220 165 195
225 245 210 245
145 160 60 80
165 185 105 125
175 195 115 140
200 220 155 185
135 150 55 65
145 160 65 90
160 180 85 105
170 190 105 125
80% 90%
1005 1100
940 1025
870 950
815 890
745 805
Second Stage Cool Speed − cfm
Medium− Medium
Low High
1185 1275
1060 1145
925 1010
Second Stage
135 160 185 205 235
185 220 245 275 305
230 265 300 330 355
285 325 360 390 425
110 135 155 175 195
145 170 200 225 250
175 205 235 265 290
220 255 285 315 345
85 105 125 150 170
120 145 165 185 205
135 165 185 210 235
150 175 210 240 275
100%
1200
1115
1030
965
870
High
(Default)
1395
1270
1100
265 295
330 360
380 410
460 495
215 235
270 295
315 335
380 415
190 210
225 250
260 285
305 335