104
RT-SVX063E-EN
Table 54. Component static pressure drops (in. H
2
O) (continued)
Tons
CFM
Std
Evap Coil
HGRH
Heating System
Filters Economizer
Standard
High
Efficien-
cy
Variable Gas Electric
Pre Evap Panel
Pre
Evap
Cart
Final
Cart
Re-
turn
Air
Out-
side
Air W/
O Traq
Out-
side
Air W/
Traq
Dry
Wet
Dry
Wet
Dry
Wet
250
MBh
350
MBh
500
MBh
850
MBh
1200
MBh
All kW
2"
Merv
4
2"
Merv
8
4"
Merv
8
4"
Merv
14
70
14000 0.35 0.38 0.21 0.24 0.21 0.24 0.03 0.48 0.61 0.55 0.23 0.07 0.13 0.11 0.33 0.29 0.33 0.20 0.22 0.22
17200 0.46 0.53 0.27 0.33 0.26 0.33 0.04 0.73 0.92 0.82 0.35 0.10 0.19 0.17 0.50 0.45 0.50 0.29 0.33 0.33
20400 0.54 1.44 0.30 0.43 0.32 0.43 0.05 1.03 1.30 1.16 0.49 0.14 0.27 0.24 0.70 0.63 0.71 0.41 0.46 0.46
23600 0.69 0.88 0.38 0.54 0.38 0.54 0.07 1.37 1.74 1.55 0.65 0.19 0.36 0.32 0.94 0.84 0.95 0.55 0.61 0.61
26800 0.85 1.07 0.48 0.66 0.48 0.66 0.09 1.77 2.24 2.00 0.84 0.25 0.46 0.41 1.21 1.08 1.22 0.72 0.79 0.79
30000 1.02 1.26 0.57 0.78 0.57 0.78 0.12 2.22 2.81 2.50 1.06 0.31 0.58 0.51 1.52 1.35 1.53 0.90 0.99 0.99
75
15000 0.47 0.51 0.24 0.26 0.24 0.26 0.03 0.56 0.70 0.63 0.26 0.08 0.14 0.13 0.38 0.34 0.38 0.22 0.25 0.25
18000 0.58 0.00 0.29 0.35 0.28 0.35 0.04 0.80 1.01 0.90 0.38 0.11 0.21 0.18 0.55 0.49 0.55 0.32 0.36 0.36
21000 0.68 0.88 0.32 0.45 0.34 0.45 0.06 1.09 1.38 1.23 0.52 0.15 0.28 0.25 0.74 0.66 0.75 0.44 0.49 0.49
24000 0.85 1.08 0.39 0.55 0.39 0.55 0.08 1.42 1.80 1.60 0.68 0.20 0.37 0.33 0.97 0.87 0.98 0.57 0.63 0.63
27000 1.03 1.29 0.48 0.67 0.48 0.67 0.10 1.80 2.28 2.03 0.86 0.25 0.47 0.41 1.23 1.10 1.24 0.73 0.80 0.80
30000 1.22 1.51 0.57 0.79 0.57 0.79 0.12 2.22 2.81 2.50 1.06 0.31 0.58 0.51 1.52 1.35 1.53 0.90 0.99 0.99
Notes:
1. Static pressure drops of accessory components must be added to determine total static pressure for fan selections.
2. Gas heat section maximum temperature rise of 60°F.
3. Economizer static pressure value for sizing supply fan is the highest of the following: a) Return air static pressure drop plus customer return duct static pressure and b) Outside air static
pressure drop.
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