Lennox G71MPP-36B-070 Installation Instructions Manual page 46

TABLE 27
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
in order to maintain proper air velocity across the filter.)
0 through 0.80 in. w.g. External Static Pressure Range
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
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Heating Input Ran
50% 60%
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955 lO95
840 965 iiiiiiiiiiiiiiiiiiiiiiiii_:iii_19_5_!i_!i_!i_!i_!i_!i_!i_!i_!i_!i_!i_!_!i!!!_!_
765 880 ......................................................
e and Blower Volume - CFM
80%
1490
1380
1305
1210
1110
90%
1630
1525
1435
1330
1225
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COOLING BLOWER PERFORMANCE
Blower Speed Selections
Cooling Adjust CFM First Stage Cool Speed - cfm Second Stage Cool Speed - cfm
Selections Medium- Medium High I Medium- I Medium I High
Low Low High (Default) Low Low High (Default)
Increase (+10%) Cool CFM 935 1025 1155 1285 1585 1700 1905 2135
Default Cool CFM 840 915 1050 1175 1435 1535 1740 1930
Decrease (-10%) Cool CFM 750 800 925 1050 1280 1385 1570 1755
The effect of static pressure is included in air volumes shown,
Lennox Harmony Ill" Zone Control Applications - Minimum blower speed is 450 cfm,
The following control 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 Perfomance 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.
G71 MPP-60C-110 BLOWER MOTOR WATTS - COOLING
I Motor Watts @ Various External Static Pressures - in. wg.
Blower Speed First Stage Second Stage
o tions 0 I0.10 I0.20 I0.30 I0. 0 I 0.50 I0.80 I0.70 I0.80 0 I0.10 I0.20 I0.30 I0. 0 I 0.50 I0.80 I0.70 I0.80
Increase (+10%) Cool CFM
Low 70 90 110 130 150 165 185 210 230 255 295 345 390 430 470 510 545 585
Medium-Low 85 105 125 150 170 190 215 235 255 340 375 415 455 490 525 570 615 660
Medium-High 115 135 160 185 210 230 255 285 310 455 500 555 610 655 695 750 800 850
High 155 175 195 220 250 285 310 335 360 650 710 770 835 880 920 960 995 1035
Default Cool CFM
Low 60 75 90 110 125 145 165 185 205 195 230 270 305 345 380 415 455 490
Medium-Low 70 85 105 125 140 160 180 200 220 225 265 315 360 400 440 475 515 555
Medium-High 95 110 130 150 175 200 225 245 265 365 400 445 485 525 565 610 650 690
High 115 135 165 190 215 235 260 285 310 495 535 580 625 675 725 770 815 860
Decrease (-10%) Cool CFM
Low
Medium-Low
Medium-High
High
4OO
455
57O
69O
Page 46