Additional Static Resistance Dm078, 120; Additional Static Resistance Dm090, 102 - York PREDATOR DM 078 Technical Manual

Standard 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 9.0 eer
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TABLE 31: ADDITIONAL STATIC RESISTANCE DM078, 120 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
*
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 32: ADDITIONAL STATIC RESISTANCE DM090, 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
*
Deduct 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.
Johnson Controls Unitary Products
*
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
*
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
† ‡
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
† ‡
9
18
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.1
0.1
0.11
0.12
0.13
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.2
0.21
0.22
0.23
0.24
246645-YTG-C-0708
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
Electric Heat KW
24
36
0.07
0.08
0.08
0.09
0.09
0.1
0.1
0.11
0.12
0.13
0.13
0.14
0.15
0.16
0.17
0.18
0.19
0.2
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
0.1
0.11
0.13
0.14
0.16
0.18
0.2
0.22
0.24
0.26
0.28
0.31
0.34
33

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This manual is also suitable for:

Predator dm 090Predator dm 102Predator dm 120Predator dm 150Predator dm 078

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