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BLOWER DATA
SLP98UH070V36B BLOWER PERFORMANCE (less lter)
RIGHT SIDE RETURN AIR WITH OPTIONAL RETURN AIR BASE
HEATING BLOWER PERFORMANCE
Heating Adjust CFM Selections
Heating Input Range and Blower Volume - CFM
35% 40% 50% 60% 70% 80% 90% 100%
Increase (+15%) Heat CFM 471 519 614 709 805 900 996 1091
Increase (+7.5%) Heat CFM 435 480 570 660 751 841 931 1021
Default Heat CFM 399 441 526 611 696 781 866 951
Decrease (-7.5% ) Heat CFM 369 408 486 564 643 721 799 877
Decrease (-15% ) Heat CFM 339 375 446 517 589 660 732 803
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 595 715 815 950 855 1045 1205 1350
Default Cool CFM 520 655 755 840 790 945 1090 1255
Decrease (-10%) Cool CFM 490 595 670 745 720 845 985 1130
The effect of static pressure is included in air volumes shown. 
The following control congurations are available. See Installation Instructions for details and DIP switch settings.
Heat Modes Available (Heating Blower Performance Table):
  Single stage thermostat: 
    - 35%, 70%, 100% input (three-stage) with time delays in-between 
  Two-stage thermostat: 
    - Variable Rate Capacity Mode - furnace automatically adjusts ring rate based on rst- and second-stage cycle times 
    - W1 demand at 70% input, W2 demand at 100% input. No delay between stages 
  icomfort Touch™ Communicating Thermostat: 
    - Variable Rate Capacity Mode - furnace automatically adjusts ring rate based on rst- and second-stage cycle times 
    - 35%, 60%, 80%, 100% (four-stage) with time delays in-between
Cool Mode Available (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 300 cfm.
Lennox Harmony III™ Zoning System Applications - Minimum blower speed is 250 cfm.
SLP98UH090V36C BLOWER PERFORMANCE (less lter)
BOTTOM RETURN AIR
HEATING BLOWER PERFORMANCE
Heating Adjust CFM Selections
Heating Input Range and Blower Volume - CFM
35% 40% 50% 60% 70% 80% 90% 100%
Increase (+15%) Heat CFM 687 734 827 921 1014 1108 1201 1295
Increase (+7.5%) Heat CFM 654 697 782 867 953 1038 1123 1209
Default Heat CFM 621 660 737 814 891 968 1045 1122
Decrease (-7.5% ) Heat CFM 581 616 687 757 828 899 970 1041
Decrease (-15% ) Heat CFM 540 572 637 701 766 830 895 959
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 625 710 830 950 875 1040 1210 1360
Default Cool CFM 565 670 760 860 800 945 1100 1240
Decrease (-10%) Cool CFM 520 610 685 785 720 840 970 1115