RT-SVX072A-EN
95
Table 35. Component static pressure drops (in. W.G.), 20 to 75 tons air-cooled (continued)
CFM
Std
Evap Coil Heating System
Filters
Std
Roof
Econ
w/ or
w/
out
Re-
lief
HGR-
H
Dry
Wet
SFH_ - FC SFH_ - DDP SHE_ SLH_ SSH_
Throwaway
Perm
Wire
Bag
& Pre
Cart
&
Pre
Final
Cart
Low
High
Low
High
All
kW
Low
High
Low
High
Std
High
27000 1.01 1.26 0.51 0.33 1.05 0.88 0.30 0.42 0.52 0.30 0.48 0.17 0.17 0.06 1.12 1.26 0.98 0.27 0.28 0.16
Notes:
1. Static pressure drops of accessory components must be added to external static pressure to enter fan selection tables.
2. Gas heat section maximum temperature rise of 60° F.
3. Throwaway filter option limited to 300 ft/min face velocity.
4. Bag filter option limited to 740 ft/min face velocity.
5. Horizontal roof curbs assume 0.50" static pressure drop or double the standard roof curb pressure drop, whichever is greater.
6. No additional pressure loss for model SXH_.
7. For final filters w/ prefilters (digit 13 = M, N, P, Q) also add pressure drop for throwaway filter.
UUnniitt SSttaarrttuupp
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