Exhaust Fan Data; 60 Through 65 Ton Exhaust Fan Data - York ECO R-22 User Manual

Exhaust Fan Data

EXHAUST FAN MOTOR SIZING INSTRUCTIONS
In order to determine the proper exhaust fan motor size,
add the return duct static pressure to the appropriate
damper pressure drop value in Table 23 to get the total
static pressure applied to the exhaust fan. Based on
the exhaust fan air flow and total static pressure, deter-
mine the brake horsepower and RPM of the exhaust
fan.
TABLE 20 – 50 THROUGH 65 TON EXHAUST FAN DATA
TOTAL STATIC PRESSURE (Pascals of water column)
m3/hr 62
STD. AIR kW RPM
13592 1.2 498
20388 3.7 694
27184 8.4 906
33980
TABLE 20 – 50 THROUGH 65 TON EXHAUST FAN DATA (CONT'D)
TOTAL STATIC PRESSURE (Pascals of water column)
m3/hr 311
STD. AIR kW RPM
13592 2.6 810
20388 5.6 924
27184 1.4 1055
33980
NOTE: * Grey areas indicate operation in motor service factor.
48
124 187
kW RPM kW RPM
1.6 598 1.9 675
3.9 732 4.5 804
8.8 930 9.2 957
16.6 1141 17.7 1161
373 435
kW RPM kW RPM
3.0 873 3.4 933
6.1 976 6.6 1025
11.2 1104 12.0 1150
249
kW RPM
2.3 744
5.9 867
9.6 996
478
kW RPM
3.9 992
7.2 1072
12.7 1196
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