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

TABLE 41: ADDITIONAL STATIC RESISTANCE 50" CABINET (METRIC)
3
M S Cooling Only
0.89 14.9
0.99 17.4
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
1.02 69.5
2.12 74.5
2.21 82.0
2.30 89.4
2.40 96.9
2.49 104.3
2.59 111.8
2.68 119.2
2.77 129.1
2.87 139.1
2.96 149.0
*.
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 62.1 Pa, the unit will deliver less M
TABLE 42: ADDITIONAL STATIC RESISTANCE 42" CABINET (METRIC)
CFM
0.9
0.99
1.09
1.18
1.27
1.37
1.46
1.56
1.65
1.75
1.84
1.93
2.03
*.
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.
38
*
Economizer
5.0
5.0
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
14.9
14.9
17.4
17.4
17.4
*
Cooling Only
-0.99
2.50
2.50
4.98
7.50
10.00
12.50
14.90
17.40
19.90
22.40
22.40
24.90
† ‡
9 18
12.4 14.9
14.9 17.4
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
94.4 99.3
101.8 106.8
109.3 114.2
116.7 121.7
124.2 131.6
3
S during full economizer operation.
127408-YIM-B-0606
†
Electric Heat kW
24 36
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 49.7
57.1 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
109.3 114.2
116.7 121.7
124.2 131.6
131.6 139.1
139.1 146.5
† ‡
Economizer
17.40
22.40
27.40
32.40
39.90
44.83
49.81
54.80
59.80
67.20
72.20
77.20
82.20
Unitary Products Group
54
24.8
27.3
32.3
34.8
39.7
44.7
49.7
54.6
59.6
64.6
69.5
77.0
84.4
91.9
99.3
106.8
114.2
121.7
131.6
139.1
146.5
154.0
161.4