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Blower Performance
A98USMV070B12S BLOWER PERFORMANCE (less filter)
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
A98USMV090C12S BLOWER PERFORMANCE (less filter)
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.
The following control configurations 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 firing rate based on first- and second-stage cycle times
- W1 demand at 70% input, W2 demand at 100% input. No delay between stages
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 38% of the same second-stage COOL speed position minimum 300 cfm
508364-01
Heating Input Range and Blower Volume - CFM
35%
40%
50%
489
538
636
450
496
588
410
453
539
380
419
498
349
385
458
First Stage Cool Speed- cfm
Medium
Low
Medium
Low
600
740
840
555
665
770
500
600
680
Heating Input Range and Blower Volume - CFM
35%
40%
50%
687
734
827
654
697
792
621
660
737
581
616
687
540
572
637
First Stage Cool Speed- cfm
Medium
Low
Medium
Low
625
710
830
565
670
760
520
610
685
Issue 2346
60%
70%
735
833
680
772
624
710
578
657
531
604
Blower Speed Selections
Second Stage Cool Speed-cfm
High
Low
(Default)
970
860
855
810
790
705
60%
70%
821
1014
867
953
814
891
757
828
701
788
Blower Speed Selections
Second Stage Cool Speed-cfm
High
Low
(Default)
950
875
860
800
785
720
80%
90%
100%
931
1030
1128
864
956
1048
796
881
967
736
815
895
676
749
822
Medium
High
Medium
Low
(Default)
1060
1215
1365
960
1130
1265
840
1005
1140
80%
90%
100%
1108
1201
1295
1038
1123
1209
968
1045
1122
899
970
1041
830
895
959
Medium
High
Medium
Low
(Default)
1040
1210
1380
945
1100
1240
840
970
1115
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