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TABLE 11
G71MPP−60D−135 BLOWER PERFORMANCE
(less filter) −−
Side Return Air with Optional RAB Return Air Base
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
1020
1180
1340
1500
1650
1800
1955
Increase (+7.5%) Heat CFM
950
1095
1245
1395
1535
1680
1825
Default Heat CFM
885
1020
1160
1300
1435
1575
1715
Decrease (–7.5% ) Heat CFM
820
945
1075
1200
1335
1475
1610
Decrease (–15% ) Heat CFM
745
870
990
1110
1230
1350
1470
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
1080
1155
1310
1480
1550
1660
1875
2105
Default Cool CFM
985
1055
1190
1325
1400
1510
1720
1920
Decrease (–10%) Cool CFM
875
945
1060
1190
1250
1345
1530
1715
The effect of static pressure is included in air volumes shown.
Lennox Harmony III
t
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
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
90
110
140
165
190
210
235
260
285
235
265
305
340
380
415
450
480
515
Medium−Low
105
130
160
190
210
230
255
285
310
290
325
370
410
450
490
515
545
575
Medium−High
145
170
205
235
265
290
325
355
390
420
460
510
555
595
640
680
715
755
High
200
230
270
305
345
385
415
445
480
580
630
690
745
800
850
895
935
975
Default Cool CFM
Low
70
90
115
140
165
190
210
230
250
170
200
235
270
305
335
370
400
430
Medium−Low
90
105
125
150
175
200
225
250
270
200
230
270
310
355
400
435
465
495
Medium−High
115
140
170
195
225
250
275
300
325
330
365
400
440
485
525
555
585
615
High
145
175
205
240
270
295
330
365
395
435
480
530
580
625
675
715
750
790
Decrease (–10%) Cool CFM
Low
60
75
95
115
135
155
175
195
215
135
155
180
205
240
280
305
330
355
Medium−Low
70
90
110
130
150
170
195
215
235
160
185
215
240
275
310
345
375
410
Medium−High
85
105
130
155
180
205
230
250
270
220
255
295
335
370
410
440
475
510
High
120
140
170
195
220
240
270
295
325
330
365
400
440
480
525
555
585
615