IM 915-13 • VISION - EXTENDED SIZES 44 www.DaikinApplied.com
Filter Gauges
Filter gauges indicate pressure drop for installed lters. If
prelters are present, the gauge will indicate the pressure drop
for both pre-and nal lters
Table 27 shows the typical lter pressure drop for clean lters
at rated air ow. The tables also show a nal pressure drop for
front loaded lters.
Where a single lter gauge is used, the prelters can be
removed to check the pressure drop of the nal lters.
Figure 68: Filter Gauge
Table 27: Filter Pressure Drops - Flat Panel and High Eciency Cartridge
Flat Panel Filter
Face
Velocity
5700 PerfectPleatUltra PerfectPleatHC PerfectPleatUltra
2"–Side MERV 7 2"–Front MERV 7 2"–Side MERV 8 2"–Front MERV 8 4"–Side MERV 7 4"–Front MERV 7 4"–Side MERV 8 4"–Front MERV 8
Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final
500
fpm
0.22 1.00 0.27 1.00 0.36 1.00 0.42 1.00 0.20 1.00 0.27 1.00 0.36 1.00 0.47 1.00
Face
Velocity
Varicel SH
12"–Side MERV 11 12"–Side MERV 13 12"–Side MERV 14 12"–Front MERV 1112"–Front MERV 1312"–Front MERV 14
Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final
500
fpm
0.34 1.20 0.49 1.20 0.51 1.20 0.45 1.20 0.65 1.20 0.67 1.20
Face
Velocity
Varicel II MH
4"–Side MERV 11 4"–Side MERV 14 4"–Side MERV 15 4"–Front MERV 11 4"–Front MERV 14 4"–Front MERV 15
Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final
500
fpm
0.38 1.50 0.55 1.50 0.63 1.50 0.46 1.50 0.65 1.50 0.74 1.50
Face
Velocity
Varicel V
4"–Side MERV 11 4"–Side MERV 14 4"–Side MERV 15 4"–Front MERV 11 4"–Front MERV 14 4"–Front MERV 15
Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final
500
fpm
0.24 2.00 0.31 2.00 0.43 2.00 0.43 2.00 0.52 2.00 0.66 2.00
Table 28: Filter Pressure Drops - High Eciency Bag
Face
Velocity
DriPak 2000
12"–Side MERV 8 12"–Front MERV 8 15"–Side MERV 8 15"–Front MERV 8 19"–Side MERV 8 19"–Front MERV 8 21"–Side MERV 11
21"–Front MERV
11
Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final
500
fpm
0.20 1.00 0.23 1.00 0.18 1.00 0.21 1.00 0.16 1.00 0.20 1.00 0.28 1.00 0.31 1.00
Face
Velocity
21"–Side MERV 1421"–Front MERV 1421"–Side MERV 1521"–Front MERV 15 30"–Side MERV 11 30"–Front MERV 11 30"–Side MERV 14 30"–Front MERV 14
Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final
500
fpm
0.44 1.00 0.50 1.00 0.64 1.00 0.73 1.00 0.24 1.00 0.27 1.00 0.33 1.00 0.38 1.00
Face
Velocity
30"–Side MERV 1530"–Front MERV 15 36"–Side MERV 11 36"–Front MERV 11 36"–Side MERV 14 36"–Front MERV 14 36"–Side MERV 15 36"–Front MERV 15
Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final Initial Final
500
fpm
0.46 1.00 0.52 1.00 0.19 1.00 0.22 1.00 0.27 1.00 0.30 1.00 0.39 1.00 0.45 1.00