Nordyne SC Installation Instructions Manual page 36

Model Number
& Motor
Heating Input Speed
(Btuh)
High
SC108D-45D
Med-High
Bottom only
or 2 openings
Med-Low
(108,000)
Low
High
SC108D-45D
Med-High
Side Return
Med-Low
(108,000)
Low
High
SC120D-45D
Med-High
Bottom only
or 2 openings
Med-Low
(120,000)
Low
High
SC120D-45D
Med-High
Side Return
Med-Low
(120,000)
Low
NOTES:
*
Factory Set Cooling Speed
**
Factory Set Heating Speed
1. Two openings are recommended for airflows above 1,600 CFM if filter(s) is(are) adjacent to furnace
2. Temperature rises in the table are approximate. Actual temperature rises may vary.
3. Cells shaded in gray indicate a temperature rise outside of the recommended range.
Model Number
& Motor
Heating Input Speed
(Btuh)
*
HIGH
MED-HIGH
SL054D-24B
54,000
MED-LOW
LOW
*
HIGH
MED-HIGH
SL072D-24B
72,000
MED-LOW
LOW
*
HIGH
MED-HIGH
SL090D-35C
90,000
MED-LOW
LOW
*
HIGH
MED-HIGH
SL120D-45D
120,000
MED-LOW
LOW
NOTES:
*
Factory Set Cooling Speed
**
Factory Set Heating Speed
1. Temperature rises in the table are approximate. Actual temperature rises may vary.
2. Cells shaded in gray indicate a temperature rise outside of the recommended range.
36
MAXIMUM AIRFLOW & TEMPERATURE RISES (
*SC SERIES UPFLOW / HORIZONTAL FURNACES
0.1 0.2
CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise
*
2,135 43 2,095 44
**
2,000 46 1,955 47
1,665 55 1,660 55
1,385 66 1,360 68
*
2,115 43 2,075 44
**
1,980 46 1,935 48
1,650 56 1,645 56
1,370 67 1,345 68
*
2,135 48 2,095 49
**
2,000 51 1,955 52
1,665 61 1,660 62
1,385 — 1,360 —
*
2,115 48 2,075 49
**
1,980 52 1,935 53
1,650 62 1,645 62
1,370 — 1,345 —
Table 6. Continued
MAXIMUM AIRFLOW & TEMPERATURE RISES (
*SL SERIES DOWNFLOW GAS FURNACES
0.1 0.2
CFM Rise CFM Rise
1,580 29 1,550 30
1,240 37 1,230 37
**
1,145 40 1,120 41
895 51 870 53
1,560 39 1,530 40
**
1,245 49 1,225 50
1,085 57 1,070 57
850 — 830 —
1,955 39 1,905 40
**
1,845 42 1,790 43
1,320 58 1,290 59
1,190 64 1,165 —
2,215 46 2,150 48
**
2,050 50 2,015 51
1,720 59 1,690 60
1,420 — 1,410 —
Table 7. *SL Downflow Furnaces
External Static Pressure (Inches Water Column)
0.3 0.4
2,040 45 1,975 47 1,910
1,900 48 1,845 50 1,800
1,625 57 1,590 58 1,530
1,310 70 1,300 — 1,275
2,020 46 1,955 47 1,890
1,880 49 1,830 50 1,780
1,610 57 1,575 58 1,515
1,300 — 1,290 — 1,260
2,040 50 1,975 52 1,910
1,900 54 1,845 55 1,800
1,625 63 1,590 64 1,530
1,310 — 1,300 — 1,275
2,020 51 1,955 52 1,890
1,880 54 1,830 56 1,780
1,610 63 1,575 65 1,515
1,300 — 1,290 — 1,260
External Static Pressure (Inches Water Column)
0.3 0.4
CFM Rise CFM Rise CFM
1,520 30 1,485 31 1,460
1,210 38 1,185 39 1,165
1,100 42 1,080 43 1,055
850 54 825 — 800
1,500 41 1,480 41 1,435
1,205 51 1,180 52 1,150
1,045 59 1,025 60 1,000
800 — 780 — 760
1,835 42 1,795 43 1,730
1,750 44 1,680 46 1,515
1,250 61 1,215 63 1,180
1,125 — 1,080 — 1,055
2,075 49 2,035 50 1,970
1,955 52 1,900 54 1,860
1,655 62 1,640 62 1,610
1,400 — 1,365 — 1,350
F) FOR
0
0.5 0.6 0.7
48 1,840 50 1,735 53
51 1,735 53 1,665 55
60 1,500 61 1,415 65
— 1,250 — 1,200
49 1,822 50 1,720 53
52 1,720 53 1,650 56
61 1,485 62 1,400 66
— 1,240 — 1,190
54 1,840 56 1,735 59
57 1,735 59 1,665 61
67 1,500 68 1,415
— 1,250 — 1,200
54 1,822 56 1,720 59
57 1,720 59 1,650 62
67 1,485 69 1,400
— 1,240 — 1,190
F) FOR
0
0.5 0.6 0.7
Rise CFM Rise CFM Rise
32 1,425 32 1,375 33
39 1,135 41 1,100 42
44 1,030 45 985 47
— 770 — 740 —
43 1,400 44 1,360 45
53 1,125 55 1,090 56
— 970 — 930 —
— 730 — 710 —
44 1,620 47 1,545 50
51 1,540 50 1,475 52
65 1,120 — 1,050 —
— 1,000 — 945 —
52 1,905 54 1,800 57
55 1,795 57 1,720 59
63 1,560 — 1,505 —
— 1,335 — 1,290 —
0.8
1,675 55
1,570 59
1,340 69
— 1,150 —
1,660 55
1,555 59
1,330 69
— 1,140 —
1,675 61
1,570 65
— 1,340 —
— 1,150 —
1,660 62
1,555 66
— 1,330 —
— 1,140 —
0.8
CFM Rise
1,320 35
1,045 44
940 49
715 —
1,310 47
1,045 59
880 —
685 —
1,450 53
1,410 54
970 —
875 —
1,745 59
1,620 63
1,465 —
1,260 —