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BLOWER PERFORMANCE SPECIFICATIONS
13
NOTES:
1. CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer.
2. All furnaces ship as high speed cooling. Installer must adjust blower cooling speed as needed.
3. For most jobs, about 400 CFM per ton when cooling is desirable.
4. INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.
5. The chart is for information only. For satisfactory operation, external static pressure must not exceed value shown on rating plate. The shaded area indicates
ranges in excess of maximum external static pressure allowed when heating. The data for 0.6" w.c. to 0.8" w.c. is shown for air conditioning purposes only.
6 The dashed (---) areas indicate a temperature rise not recommended for this model.
7. The above chart is for U.S. furnaces installed at 0-2000 feet. At higher altitudes, a properly derated unit will have approximately the same temperature rise at a
particular CFM, while the ESP at that CFM will be lower.
Tons AC
at 0.5" 0.6 0.7 0.8
ESP CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM
HIGH 3.0 152122146623141424137324129826124311641075
*M(H/S)80453A*** MED 2.5 1160291160291132291121301082311042997925
(MEDIUM) MED-LO 2.0 961 35 955 35 948 35 932 36 913 37 882 821 803
LOW 1.5 781 43 785 42 781 43 773 43 761 44 745 716 668
HIGH 3.0 14223613523813074011974311574510921075983
*M(H/S)80703A*** MED 2.5 109847108148105149103950102151 983924868
(MEDIUM) MED-LO 2.0 919 56 913 57 892 58 847 ---- 829 ---- 818 792 728
LOW 1.5 758 ---- 741 ---- 741 ---- 733 ---- 699 ---- 677 649 626
HIGH 4.0 2134----210025204225197526188328178617001601
*M(H/S)80704B*** MED 3.5 166831166331165631164532161632154914921391
(MEDIUM) MED-LO 3.0 141937142636142636143236141937137813281261
LOW 2.5 1134 46 1145 45 1166 44 1171 44 1160 45 1144 1111 1071
HIGH 3.0 160741157242154743149845144846139013021222
*M(H/S)80903B*** MED 2.5 11595811565811455811275911086010751033957
(MEDIUM) MED-LO 2.0 938 ---- 916 ---- 916 ---- 900 ---- 889 ---- 865 829 785
LOW 1.5 785 ---- 766 ---- 743 ---- 730 ---- 709 ---- 683 666 604
HIGH 4.0 2051----1983----189535181237172539162715301439
*M(H/S)80904B*** MED 3.5 173638170839165240161141154043147513941307
(MEDIUM) MED-LO 3.0 149345166840145946142947138948133912741204
LOW 2.5 1200 56 1185 56 1180 56 1173 57 1158 58 1125 1125 1080
HIGH 5.0 2290 ---- 2229 ---- 2155 ---- 2047 ---- 1960 ---- 1837 1712 1584
*M(H/S)80905C*** MED 4.0 185236182037177738171939164141156714691382
(MEDIUM) MED-LO 3.5 161541159242155643151644147045140513461235
LOW 3.0 1290 52 1285 52 1265 53 1235 54 1214 55 1174 1044 904
HIGH 5.0 232337222538212040204042197443180116881577
*M(H/S)81155C*** MED 4.0 185846184746179947174449167451157714931399
(MEDIUM) MED-LO 3.5 159653158754157154155255149357139713261217
LOW 3.0 1291 ---- 1272 ---- 1261 ---- 1257 ---- 1205 ---- 1168 1118 1060
HIGH 5.0 246942238943230045222347213149202719021786
*M(H/S)81405D*** MED 4.0 157566155867154567151369150069141913541271
(MEDIUM) MED-LO 3.5 1402 ---- 1380 ---- 1343 ---- 1319 ---- 1296 ---- 1245 1183 1106
LOW 3.0 1200 ---- 1186 ---- 1161 ---- 1127 ---- 1082 ---- 1042 995 926
(CFM & Temperature Rise vs. External Static Pressure)
0.1 0.2 0.3 0.4 0.5
Model
Heating Speed
As Shipped
Motor
Speed
EXTERNAL STATIC PRESSURE (Inches Water Column)
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