Front Load Filter Option; Filter Gauges - Daikin Skyline IM 777-8 Installation And Maintenance Manual

Front Load Filter Option

Front loaded filter options require that the filters be removed
and replaced from inside the unit.
To remove filters, rotate the wire clips. This releases both the
prefilter and the final filter. When installing clean filters, check
to verify the filters are fully seated in the frame
Figure 52: Frame and Filters with Holding Clips
P r e f i l t e r
IM 777-8 • Skyline Air Handler
(Figure 52).
F i n a l
F i l t e r
F i l t e r
F r a m e
R o t a t e
W i r e C l i p s

Filter Gauges

Filter gauges indicate pressure drop for installed filters. If
prefilters are present, the gauge will indicate the pressure drop
for both pre-and final filters
Table 30 shows the typical filter pressure drop for clean filters
at rated air flow. The tables also show a final pressure drop for
front loaded filters.
Where a single filter gauge is used, the prefilters can be
removed to check the pressure drop of the final filters.
Figure 53: Filter Gauge
Table 30: Filter Pressure Drops
Bag filters—DriPak 2000
Efficiency 45%
Rated velocity (fpm) 625
Initial pressure drop 0.20–0.26
Initial pressure drop 1.0
Cartridge filters—Varicel II MH, 4.25" deep
Efficiency 65%
Rated velocity (fpm) 500
Initial pressure drop 0.43
Final pressure drop 1.5
Cartridge filters—Varicel SH, 12" deep
Efficiency
Rated velocity (fpm)
Initial pressure drop
Final pressure drop
Pleated panel filters
Type
Efficiency
Rated Velocity (fpm)
Initial Pressure Drop
Final Pressure Drop
5700 filters
Efficiency
Rated velocity (fpm)
Initial pressure drop
Final pressure drop
Pleated 62 Plus filters
Size
Efficiency
Initial pressure drop
Final pressure drop
38
s M
ervICe and aInTenanCe
65% 85%
500 500
0.21–0.30 0.34–0.48
1.0 1.0
85% 95%
500 500
0.61 0.70
1.5 1.5
70%
500
0.39
1.2
Perfect pleat AMAir 300 4"
30% 30%
500 625
0.36 0.36
1.0 1.0
N/A
500
0.25
1.0
2" 4"
70% 70%
0.42 0.37
1.0 1.0
www.DaikinApplied.com
95%
500
0.50–0.70
1.0