Additional Static Resistance Dh120 And 150; Additional Static Resistance Dh078, 090, 102 - York PREDATOR 102 Technical Manual

High efficiency single package air conditioners and single package gas/electric units 6-1/2, 7-1/2, 8-1/2, 10 and 12-1/2 nominal tons 10.0-11.5 eer
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246646-YTG-C-0606
TABLE 31: ADDITIONAL STATIC RESISTANCE DH120 AND 150
CFM
Cooling Only
1900
0.06
2100
0.07
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
5500
0.45
5700
0.48
5900
0.52
6100
0.56
6300
0.60
1 Add these resistance values to the available static resistance in the respective Blower Performance Tables.
2 Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
3 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 32: ADDITIONAL STATIC RESISTANCE DH078, 090, 102
CFM
Cooling Only
1900
-0.004
2100
0.01
2300
0.01
2500
0.02
2700
0.03
2900
0.04
3100
0.05
3300
0.06
3500
0.07
3700
0.08
3900
0.09
4100
0.09
4300
0.10
1 Deduct these resistance values to the available static resistance in the respective Blower Performance Tables.
2 Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
3 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.
Unitary Products Group
1
Economizer
0.02
0.02
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
0.06
0.06
0.07
0.07
0.07
1
Economizer
0.07
0.09
0.11
0.13
0.16
0.18
0.20
0.22
0.24
0.27
0.29
0.31
0.33
2 3
9
18
0.05
0.06
0.06
0.07
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
0.38
0.40
0.41
0.43
0.44
0.46
0.47
0.49
0.50
0.53
2 3
9
18
0.05
0.06
0.06
0.07
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
2
Electric Heat KW
24
36
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
0.38
0.40
0.41
0.43
0.44
0.46
0.47
0.49
0.50
0.53
0.53
0.56
0.56
0.59
2
Electric Heat KW
24
36
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
54
0.10
0.11
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
0.53
0.56
0.59
0.62
0.65
54
0.10
0.11
0.13
0.14
0.16
0.18
0.20
0.22
0.24
0.26
0.28
0.31
0.34
33

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