BdYZa<%+(,$<%+(-B[\#H^cXZ%)$&'
")&"
5. 8dbeVgZi]ZidiVahiVi^XegZhhjgZadhh[dgi]Vi
a^cZidi]ZXadhZhi8;B\^kZc^cFigure 74 or
75 [dgndjgYjhiXdaaZXidgdcPage 42#
Example/6ine^XVaData Sheet Performance
Curve^h^aajhigViZY^c Figure 73# ;^cY)#)dc
i]ZHiVi^XEgZhhjgZVm^hi]ZVbdjcid[idiVa
hiVi^XegZhhjgZadhhXVaXjaViZY^cFigure 72!
i]Zc gZ[Zg id i]Z XadhZhikVajZ dc i]Z 8;B
Vm^h·Veegdm^bViZan&&'%8;B#
I]Z&&'%8;B[dgi]ZhiVi^XegZhhjgZadhhd[
i]Za^cZXdccZXiZYidi]ZgdjiZg^hlZaaVWdkZ
i]Z''%8;BgZfj^gZbZcid[i]VibVX]^cZ#
Performance Curve
'*%%
''*%
'%%%
&,*%
&*%%
&'*%
&%%%
,*%
*%%
'*%
%
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0
1
1354
CFM
STATIC PRESSURE (Inch/H2O)
Figure 73#8;B[dghiVi^XegZhhjgZadhhd[a^cZ
XdccZXiZYidVYjhiXdaaZXidggdjiZg#
8adhZhi
8;B
&&'%
)#)HE
Adhh
·>[ i]Z 8;B [dg ndjg hiVi^X egZhhjgZ adhh
^h VWdkZ i]Z gZfj^gZbZci d[ i]Z bVX]^cZ
XdccZXiZY id i]Z ZcYd[ i]ViWgVcX] a^cZ!
i]Zc Yjhi XdaaZXi^dc l^aa bdhi a^`Zan WZ
hjXXZhh[ja# 8dc\gVijaVi^dch NdjkZ _jhi
YZh^\cZYndjg dlc YjhihnhiZb# GZ[Zg id
i]Z Accessories hZXi^dc dc Page 44 id
hiVgiWjn^c\i]ZXdbedcZcihcZXZhhVgnid
bV`ZndjghnhiZbVgZVa^in#
·>[i]Z8;B[dgndjghiVi^XegZhhjgZadhh^h
WZadli]ZgZfj^gZbZcid[i]ZbVX]^cZ!i]Zc
i]Via^cZl^aacdiZ[[ZXi^kZanXdaaZXii]ZYjhi#
Ndjbjhii]ZcbdY^[nhdbZd[i]Z[VXidgh
^c i]Vi a^cZ id gZYjXZ i]Z hiVi^X egZhhjgZ
adhh#HdbZd[i]ZlVnhidYdi]^h^cXajYZ&
^chiVaa^c\aVg\ZgYjXi!'gZYjX^c\Vbdjcid[
[aZm^WaZ YjXi jhZY! ( ^cXgZVh^c\ bVX]^cZ
Yjhiedgih^oZ!)bdk^c\bVX]^cZXadhZgid
YjhiXdaaZXidgidZa^b^cViZYjXiaZc\i]!VcY
*gZYjX^c\ .%ß ZaWdlhdg gZeaVX^c\ i]Zb
l^i])*ßZaWdlh#
Figure 72. IdiVa^c\hiVi^XegZhhjgZcjbWZgh#
Main Line
+G^\^YE^eZ%#%(,Vi'% ################ %#,)%
Branch Line
)G^\^YE^eZ%#%,*Vi&% ################ %#,*%
);aZmE^eZ%#'-Vi* ######################## &#)%%
Elbows/Branches
+)*ßN"7gVcX] ################################ %#('.
))*ß:aWdl ######################################## %#''*
Additional Factors
HZVhdcZY;^aiZg ################################ &#%%%
Total Static Pressure Loss ................ 4.444
4. IdiVandjga^hiVhh]dlc^ci]ZZmVbeaZWZadl
idXdbZjel^i]ndjgdkZgVaahiVi^XegZhhjgZ
adhhcjbWZg[dgi]Via^cZ#
Note: Always account for a seasoned filter,
so you don't end up with a system that onl
y
works ri
g
ht when the filter is clean.
Note: When calculating static pressure los
s
to determine if multiple lines can be left ope
n
at the same time, only include the main lin
e
numbers once.
Figure 71. 6YY^i^dcVa[VXidghV[[ZXi^c\hiVi^X
egZhhjgZ#
Additional Factors Static Pressure
HZVhdcZYlZaajhZY
9jhi8daaZXi^dc;^aiZg
&
:cignAdhhViAVg\Z
BVX]^cZ=ddY
'
3. 6YYi]ZVYY^i^dcVa[VXidgh[gdbi]Z[daadl^c\"
iVWaZid
n
djga^hi#