Additional Static Resistance 50" Cabinet; Additional Static Resistance 42" Cabinet - York DM090 Installation Manual

127408-YIM-B-0606
TABLE 39: ADDITIONAL STATIC RESISTANCE 50" CABINET (IMPERIAL)
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 40: ADDITIONAL STATIC RESISTANCE 42" CABINET (IMPERIAL)
CFM
1900
2100
2300
2500
2700
2900
3100
3300
3500
3700
3900
4100
4300
*.
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.
Unitary Products Group
*
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
*
Cooling Only
-0.004
0.01
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.09
0.10
† ‡
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
†
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
† ‡
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
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
37