035-17311-000 REV A (1200))
Unitary Products Group 21
TABLE 16: 7-1/2 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE
1
2
ESP
3
TURNS OPEN
4
012345
CFM
W
5
BHP CFM
W
5
BHP CFM
W
5
BHP CFM
W
5
BHP CFM
W
5
BHP CFM
W
5
BHP
0.2
- - - 3715 1573 1.69 3634 1434 1.54 3431 1265 1.36 3218 901 0.97 3024 976 1.05
0.4
3650 1657 1.78 3510 1490 1.60 3320 1313 1.41 3079 1145 1.23 2832 810 0.87 2586 860 0.92
0.6
3334 1522 1.63 3146 1351 1.45 2910 1169 1.25 2621 1005 1.08 2307 706 0.76 - - -
0.8
2903 1352 1.45 2622 1167 1.25 2404 1013 1.09 2054 858 0.92 - - - - - -
1.0
2356 1159 1.24 - - - - - - - - - - - - - - -
1.
Blower performance is for gas heat and includes maximum number of heat tubes available for each tonnage.
2.
Blower performance includes two-inch throwaway filters.
3.
ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been
deducted from the total static pressure of the blower.
4.
“Turns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.
5.
W = Watts
TABLE 17: 7-1/2 TON OPTIONAL MOTOR DOWN SHOT BLOWER PERFORMANCE
1
2
ESP
3
TURNS OPEN
4
012345
CFM
W
5
BHP CFM
W
5
BHP CFM
W
5
BHP CFM
W
5
BHP CFM
W
5
BHP CFM
W
5
BHP
0.2
- - - - - - - - - - - - 3992 1904 2.04 3798 1679 1.80
0.4
- - - - - - - - - 3930 2017 2.16 3734 1786 1.92 3486 1552 1.66
0.6
- - - - - - 3947 2176 2.33 3670 1895 2.03 3394 1641 1.76 3084 1401 1.50
0.8
- - - 4138 2384 2.56 3623 2009 2.15 3323 1742 1.87 2971 1477 1.58 2591 1236 1.33
1.0
4126 2430 2.61 3643 2145 2.30 3224 1820 1.95 2889 1569 1.68 2466 1306 1.40 - - -
1.2
3613 2238 2.40 3143 1921 2.06 2748 1621 1.74 2369 1385 1.49 - - - - - -
1.4
3099 2039 2.19 2636 1714 1.84 2195 1424 1.53 - - - - - - - - -
1.6
2586 1833 1.97 - - - - - - - - - - - - - - -
1.
Blower performance is for gas heat and includes maximum number of heat tubes available for each tonnage.
2.
Blower performance includes two-inch throwaway filters.
3.
ESP (External Static Pressure) given is that available for the supply and return air duct system. All internal resistances have been
deducted from the total static pressure of the blower.
4.
“Turns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.
5.
W = Watts
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