035-17311-002-A-0803
Unitary Products Group
27
TABLE 21: 12-1/2 TON STANDARD MOTOR DOWN SHOT BLOWER PERFORMANCE
*
†
ESP
‡
TURNS OPEN
**
0
1
2
3
4
5
CFM
W
††
BHP
CFM
W
††
BHP
CFM
W
††
BHP
CFM
W
††
BHP
CFM
W
††
BHP
CFM
W
††
BHP
0.4
5078
3630
3.89
4809
3103
3.33
4594
3053
3.27
4360
2478
2.66
4090
2093
2.24
3812
1798
1.93
0.6
4865
3456
3.71
4584
2961
3.17
4349
2912
3.12
4106
2318
2.49
3814
1964
2.11
-
-
-
0.8
4642
3284
3.52
4356
2828
3.03
4089
2776
2.98
3840
2137
2.29
-
-
-
-
-
-
1.0
4408
3114
3.34
4124
2705
2.90
3815
2647
2.84
-
-
-
-
-
-
-
-
-
1.2
4164
2947
3.16
3889
2592
2.78
-
-
-
-
-
-
-
-
-
-
-
-
1.4
3910
2787
2.99
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
*.
Blower performance for gas heat includes maximum number of heat tubes available for each tonnage.
†.
Blower performance includes two-inch throwaway filters.
‡.
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.
**.
“Turns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.
††.
W = Watts
TABLE 22: 12-1/2 TON OPTIONAL MOTOR DOWN SHOT BLOWER PERFORMANCE
*
†
ESP
‡
TURNS OPEN
**
0
1
2
3
4
5
CFM
W
††
BHP
CFM
W
††
BHP
CFM
W
††
BHP
CFM
W
††
BHP
CFM
W
††
BHP
CFM
W
††
BHP
0.4
5994
5400
5.79
5565
4369
4.69
5488
4169
4.47
5264
3599
3.86
4990
3085
3.31
4738
2812
3.02
0.6
5824
5216
5.59
5368
4186
4.49
5289
3991
4.28
5049
3437
3.69
4763
2937
3.15
4491
2655
2.85
0.8
5641
5022
5.39
5170
4012
4.30
5076
3807
4.08
4822
3272
3.51
4528
2790
2.99
4235
2497
2.68
1.0
5444
4819
5.17
4971
3846
4.12
4847
3618
3.88
4584
3103
3.33
4286
2644
2.83
3969
2340
2.51
1.2
5233
4609
4.94
4771
3687
3.95
4604
3426
3.67
4335
2933
3.15
4035
2499
2.68
-
-
-
1.4
5009
4394
4.71
4571
3537
3.79
4346
3233
3.47
4074
2762
2.96
3777
2356
2.53
-
-
-
1.6
4771
4174
4.48
4370
3395
3.64
4074
3040
3.26
3802
2590
2.78
-
-
-
-
-
-
1.8
4520
3951
4.24
4169
3262
3.50
3786
2850
3.06
-
-
-
-
-
-
-
-
-
2.0
4255
3728
4.00
3966
3137
3.36
-
-
-
-
-
-
-
-
-
-
-
-
2.2
3976
3505
3.76
3763
3020
3.24
-
-
-
-
-
-
-
-
-
-
-
-
*.
Blower performance for gas heat includes maximum number of heat tubes available for each tonnage.
†.
Blower performance includes two-inch throwaway filters.
‡.
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.
**.
“Turns Open” refers to the setting of the variable pitch motor sheave, where “0 Turns Open” is fully closed.
††.
W = Watts