Additional Static Resistance - Imperial; Additional Static Resistance - Metric - York PREDATOR BP120 Installation Manual

TABLE 30: ADDITIONAL STATIC RESISTANCE - IMPERIAL
CFM
Cooling Only
2300 0.08
2500 0.09
2700 0.11
2900 0.12
3100 0.14
3300 0.16
3500 0.18
3700 0.20
3900 0.23
4100 0.25
4300 0.28
4500 0.30
4700 0.33
4900 0.36
5100 0.39
5300 0.42
*.
Add these resistance values to the available static resistance in the respective Blower Performance Tables.
†.
Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
‡.
The pressure drop through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return
air duct system is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.
TABLE 31: ADDITIONAL STATIC RESISTANCE - METRIC
3
M S Cooling Only
1.08 19.9
1.18 22.4
1.27 27.3
1.36 29.8
1.46 34.8
1.55 39.7
1.65 44.7
1.74 49.7
1.83 57.1
1.93 62.1
2.02 69.5
2.12 74.5
2.21 82.0
2.30 89.4
2.40 96.9
2.49 104.3
*.
Add these resistance values to the available static resistance in the respective Blower Performance Tables.
†.
Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
‡.
The pressure drop through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return
air duct system is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.
32
*
Economizer
0.02
0.02
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
0.05
0.05
0.05
0.05
0.06
0.06
*
Economizer
5.0
5.0
7.5
7.5
7.5
7.5
9.9
9.9
9.9
9.9
12.4
12.4
12.4
12.4
14.9
14.9
† ‡
9 18
0.07 0.08
0.08 0.09
0.09 0.10
0.10 0.11
0.12 0.13
0.13 0.14
0.15 0.16
0.17 0.18
0.19 0.20
0.21 0.22
0.23 0.24
0.25 0.26
0.28 0.29
0.30 0.31
0.33 0.34
0.35 0.37
† ‡
9 18
17.4 19.9
19.9 22.4
22.4 24.8
24.8 27.3
29.8 32.3
32.3 34.8
37.3 39.7
42.2 44.7
47.2 49.7
52.2 54.6
57.1 59.6
62.1 64.6
69.5 72.0
74.5 77.0
82.0 84.4
86.9 91.9
66307-YIM-B-0606
†
Electric Heat KW
24 36
0.09 0.10
0.10 0.11
0.12 0.13
0.13 0.14
0.15 0.16
0.17 0.18
0.19 0.20
0.21 0.22
0.23 0.24
0.25 0.26
0.28 0.29
0.30 0.31
0.33 0.34
0.35 0.37
0.38 0.40
0.41 0.43
†
Electric Heat KW
24 36
22.4 24.8
24.8 27.3
29.8 32.3
32.3 34.8
37.3 39.7
42.2 44.7
47.2 49.7
52.2 49.7
56.1 59.6
62.1 64.6
69.5 72.0
74.5 77.0
82.0 84.4
86.9 91.9
94.4 99.3
101.8 106.8
Unitary Products Group
54
0.13
0.14
0.16
0.18
0.20
0.22
0.24
0.26
0.28
0.31
0.34
0.37
0.40
0.43
0.46
0.49
54
32.3
34.8
39.7
44.7
49.7
54.6
59.6
64.6
69.5
77.0
88.4
91.9
99.3
106.8
114.2
121.7