Lennox G71MPP-36B-070 Installation Instructions Manual page 48

TABLE 29
G71MPP-60D-135 BLOWER PERFORMANCE (less filter)
Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side
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
Heating Input Ran
50% 60%
1220 1390
1130 1290
1045 1195
975 1110
890 1020
e and Blower Volume - CFM
80%
1725
1600
1495
1390
1275
90%
1885
1750
1650
1535
1405
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)
i i i
Increase (+10%) Cool CFM 1135 1205 1365 1540 1615 1730 1945 2190
Default Cool CFM 1025 1105 1235 1390 1455 1580 1780 1985
Decrease (-10%) Cool CFM 915 985 1115 1235 1305 1400 1600 1780
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-60D-135 BLOWER MOTOR WATTS - COOLING
Bottom Return Air, Return Air from Both Sides or Return Air from Bottom and One Side
I Motor Watts @ Various External Static Pressures-in. wg.
Blower Speed First Stage
/
Options 0 10.10 10.20 10.30 10.40 10.50 10.60 10.70 10.80
Increase (+10%) Cool CFM
Low
Medium-Low
Medium-High
High
Default Cool CFM
Low
Medium-Low
Medium-High
High
Decrease (-10%) Cool CFM
Low
Medium-Low
Medium-High
High
Second Stage
0 10.1010.2010.3010.4010.5010.6
515
6O5
75O
98O
43O
5OO
625
775
355
415
515
610
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