GMS8 Technical Manual
13
BLOWER PERFORMANCE SPECIFICATIONS
NOTES:
• CFM in chart is without filter(s). Filters do not ship with this furnace, but must be provided by the installer.
• All furnaces ship as hig-speed cooling. Installer must adjust blower cooling speed as needed.
• For most jobs, about 400 CFM per ton when cooling is desirable
• INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.
• The chart is for information only. For satisfactory operation, external static pressure must not exceed values shown on the rating plate. The shaded area insicated
ranges in excess of maximum static pressure allowed when heating.
• The dashed (---) areas indicate a temperature rise not recommended for this model.
• The above chart is for U.S. furnaces installed at 0' - 2,000'. At higher altitudes, a properly de-rated unit will have approximatley the same temperature rise at a
particular CFM, while ESP at the CFM will be lower.
GMS8***A*
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
*MS80403A*A* 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
*MS80603A*A* MED 2.5 1098 47 1081 48 1051 49 1039 50 1021 51 983 924 868
(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
*MS80604B*A* 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 4.0 2051 ---- 1983 ---- 1895 35 1812 37 1725 39 1627 1530 1439
*MS80804B*A* 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
*MS80805C*A* 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
*MS81005C*A* 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
*MS81205D*A* 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)
0.10.20.30.40.5
Model
Heating Speed
As Shipped
Motor
Speed
EXTERNAL STATIC PRESSURE (Inches Water Column)