Nordyne 045C-23ASA, Installation Instructions Manual

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Table 3. *SK - 80% AFUE, Single Stage, Downfl ow Gas Furnaces
DOWNFLOW GAS FURNACES
Model
Number
Heating
Input
(Btuh)
Motor
Speed
External Static Pressure (Inches Water Column)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise
SK054(†)-23A
54,000
High* 1,375 29 1,340 30 1,300 31 1,270 31 1,225 33 1,175 34 1,115 36 1,035 39
Med-High 1,155 35 1,130 35 1,110 36 1,085 37 1,055 38 1,015 39 975 41 910 44
Med-Low** 790 51 775 52 765 52 750 53 730 55 700 57 665 60 610 66
Low 650 62 640 63 630 63 610 66 590 68 565 71 530 75 480 83
SK072(†)-24B
72,000
High* 1,610 33 1,590 34 1,575 34 1,560 34 1,540 35 1,495 36 1,460 37 1,415 38
Med-High 1,295 41 1,275 42 1,260 42 1,250 43 1,220 44 1,195 45 1,170 46 1,120 48
Med-Low** 1,155 46 1,135 47 1,115 48 1,095 49 1,065 50 1,040 51 1,015 53 980 54
Low 910 59 885 60 860 62 835 64 810 66 785 68 765 70 735 73
SK090(†)-24B
90,000
High* 1,675 40 1,655 40 1,640 41 1,620 41 1,590 42 1,560 43 1,520 44 1,475 45
Med-High 1,330 50 1,315 51 1,300 51 1,280 52 1,255 53 1,230 54 1,200 56 1,150 58
Med-Low** 1,180 56 1,165 57 1,150 58 1,135 59 1,115 60 1,090 61 1,060 63 1,010 66
Low 940 71 925 72 900 74 880 76 850 78 825 81 795 84 760 88
SK108(†)-35C
108,000
High* 2,395 33 2,335 34 2,285 35 2,230 36 2,200 36 2,140 37 2,080 38 2,000 40
Med-High 2,190 37 2,135 37 2,115 38 2,080 38 2,030 39 1,975 41 1,915 42 1,810 44
Med-Low** 1,785 45 1,770 45 1,740 46 1,725 46 1,685 47 1,645 49 1,615 50 1,565 51
Low 1,145 70 1,110 72 1,070 75 1,035 77 1,000 80 950 84 905 88 835 96
SK126(†)-45D
126,000
High* 2,445 38 2,395 39 2,385 39 2,330 40 2,275 41 2,225 42 2,130 44 2,015 46
Med-High 2,195 43 2,170 43 2,140 44 2,120 44 2,090 45 2,030 46 1,975 47 1,855 50
Med-Low** 1,795 52 1,780 52 1,770 53 1,760 53 1,725 54 1,690 55 1,655 56 1,610 58
Low 1,480 63 1,475 63 1,450 64 1,440 65 1,440 65 1,415 66 1,405 66 1,375 68
Notes
(†) Can be C or N 1. Temperature rises in the table are approximate. Actual temperature rises may vary.
* Factory Set Cooling Speed
2. Temperature rises shaded gray are for reference only. These conditions are not recommended.
** Factory Set Heating Speed