GMSS92 Technical Manual
AIRFLOW DATA
9
*CSS92
0.6 0.7 0.8
CFM Rise CFM Rise CFM Rise CFM Rise CFM Rise CFM CFM CFM
High 3 1,400 N/A 1,331 N/A 1,263 N/A 1,189 N/A 1,106 31 1,020 941 843
Med 2.5 1,204 N/A 1,176 N/A 1,121 30 1,072 32 1,002 34 927 853 740
Med-Lo 2 1020 33 998 34 968 35 923 37 880 39 820 739 652
Low 1.5 841 41 827 41 797 43 766 44 727 47 680 634 556
High 3 1,668 31 1,335 38 1,288 40 1,207 42 1,133 45 1,061 955 845
Med 2.5 1,224 42 1,182 43 1,139 45 1,088 47 1,015 50 948 859 759
Med-Lo 2 1030 50 1005 51 988 52 942 54 893 57 830 751 666
Low 1.5 859 60 830 62 815 63 789 65 751 N/A 693 629 556
High 4 1,770 39 1,645 41 1,610 42 1,528 45 1,437 47 1,340 1,251 1,141
Med 3.5 1,690 40 1,615 42 1,531 45 1,470 46 1,393 49 1,308 1,196 1,099
Med-Lo 3.0 1,612 42 1,540 44 1,472 46 1,398 49 1,306 52 1,223 1,132 1,010
Low 2.5 1,396 49 1,339 51 1,304 52 1,250 55 1,170 58 1,092 1,010 906
High 4 1,793 48 1,699 50 1,610 53 1,533 56 1,461 58 1,363 1,247 1,146
Med 3.5 1,693 50 1,622 53 1,552 55 1,467 58 1,390 61 1,320 1,205 1,083
Med-Lo 3.0 1,632 52 1,546 55 1,493 57 1,415 60 1,332 64 1,257 1,148 1,054
Low 2.5 1,429 60 1,380 62 1,334 64 1,258 N/A 1,199 N/A 1,136 1,041 942
¹ at 0.5" ESP
Note s
• All furnaces ship as high-speed cooling and medium-speed heating. Installer must adjust blow er cooling & heating speed as needed.
• For most jobs, about 400 CFM per ton w hen cooling is desirable.
*CSS92
1005CNA
• CFM in chart is w ithout filter(s). Filters do not ship w ith this furnace, but must be provided by the installer. If the
furnace requires tw o return filters,
• INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.
• This chart is for information only. For satisfactory operation, external static pressure should not exceed value show n on the
ti l t
• The above chart is for U.S. furnaces installed at 0-2000 feet. At higher altitudes, a properly derated unit w ill have
approximately the same temperature rise at a particular CFM, w hile ESP at the CFM w ill be low er.
*CSS92
0402BNA
*CSS92
0603BNA
*CSS92
0804CNA
(CFM & Temperature Rise vs. External Static Pressure)
Model
Motor
Speed
Tons AC¹
External Static Pressure, (Inches Water Column)
0.10.20.30.40.5