Precisionaire Air Cleaner Pak XDH User Manual

Precision Pak XDH  
Semi-Rigid, High Dust Holding Capacity  
Extended Surface Bag Filter  
Bulletin PB1102-1206  
holding (XDH) capacity. Further, the media is non-  
shedding and performs exceptionally well in high  
velocity and turbulent applications.  
General  
Precision Pak XDH high dust holding capacity  
extended surface bag filters are designed for use  
in most commercial or industrial HVAC systems  
where medium to high efficiency filtration is  
required. Precision Pak XDH filters are available in  
micro-fine polyolefin synthetic media with average  
efficiency ranges of 65%, 85% and 95% per  
ASHRAE Standard 52.1 and 52.2 test methods.  
Operating face velocities up to 625 fpm are avail-  
able for all models.  
Extra High Dust Holding  
A typical XDH bag filter was tested for ASHRAE  
synthetic dust holding capacity against similar fil-  
ters with fiberglass and meltblown synthetic  
media. Results showed that the XDH filter held  
approximately 150% more dust by weight than the  
others when run to the same final resistance. This  
characteristic makes it an excellent choice for very  
dusty areas and for those systems where long  
service life and reduced maintenance are key con-  
cerns.  
Ideal for VAV  
Precision Pak XDH filters in depths up to 22” are-  
semi-rigid and thus ideally suited for variable air  
volume systems. Precision Pak XDH filters are UL  
900 Class 2 listed.  
Physical Data  
Media: Dual Phase, 100% Synthetic  
Media Backer: Non-woven polyester  
Pocket Sealant: Thermoplastic resin  
Pocket Retainer: Corrosion Resistant steel  
Header: 13/16” wide corrosion resistant  
Operating Limits: 100% RH and 180° F  
Actual Header Face Size: Nominal size less 5/8” (e.g.,  
a nominal 24” x 24” filter header is actually 23-3/8” x  
23-3/8”)  
Dual Phase Media  
Precision Pak XDH bag filters use dual phase  
polyolefin synthetic media. The media is thermal-  
ly bonded without binders and consists of non-  
woven continuous hydrophobic (water repellent)  
fibers that resist water and most chemicals. In  
addition, the media is gradient density, dual stage  
and electrostatically enhanced for extra high dust  
Important Features  
• Semi rigid pocket filter  
• Extra high dust holding capacity  
• Dual stage gradient density electrostatic media  
• Low initial pressure drop provides long life  
• Wide range of depths and face sizes  
• Linear stitching for optimum pocket form  
• Three ASHRAE efficiencies: 65%, 85%, 95%  
• Pocket perimeter ultrasonically sealed  
• MERV 11-14  
Flanders Precisionaire - Foremost in Air Filtration  
TollFree: 1-800-637-2803  
 
65% XDH Synthetic Media Filters MERV 11  
Nominal  
Depth  
(inch)  
Number  
of  
Pockets  
Nom.  
Width  
(Inch)  
Nom.  
Height  
(Inch)  
Media  
Area  
(sq. ft.)  
375 fpm  
500 fpm  
625 fpm  
cfm  
cfm  
pd  
cfm  
pd  
pd  
12  
12  
12  
6
24  
12  
24  
24  
52  
26  
1500  
750  
0.28  
0.28  
2000  
1000  
0.37  
0.37  
2500  
1250  
0.62  
0.62  
22  
22  
22  
22  
22  
22  
6
3
24  
12  
24  
12  
24  
12  
24  
24  
24  
24  
24  
24  
48  
24  
64  
32  
79  
40  
1500  
750  
0.25  
0.25  
0.22  
0.22  
0.21  
0.21  
2000  
1000  
2000  
1000  
2000  
1000  
0.35  
0.35  
0.31  
0.31  
0.29  
0.29  
2500  
1250  
2500  
1250  
2500  
1250  
0.48  
0.48  
0.42  
0.42  
0.40  
0.40  
8
1500  
750  
4
10  
5
1500  
750  
26  
26  
26  
26  
26  
26  
6
3
24  
12  
24  
12  
24  
12  
24  
24  
24  
24  
24  
24  
56  
28  
75  
38  
94  
47  
1500  
750  
0.24  
0.24  
0.21  
0.21  
0.18  
0.18  
2000  
1000  
2000  
1000  
2000  
1000  
0.34  
0.34  
0.30  
0.30  
0.26  
0.26  
2500  
1250  
2500  
1250  
2500  
1250  
0.46  
0.46  
0.41  
0.41  
0.37  
0.37  
8
1500  
750  
4
10  
5
1500  
750  
30  
30  
30  
30  
30  
30  
6
3
24  
12  
24  
12  
24  
12  
24  
24  
24  
24  
24  
24  
65  
33  
1500  
750  
0.23  
0.23  
0.19  
0.19  
0.14  
0.14  
2000  
1000  
2000  
1000  
2000  
1000  
0.33  
0.33  
0.29  
0.29  
0.24  
0.24  
2500  
1250  
2500  
1250  
2500  
1250  
0.44  
0.44  
0.40  
0.40  
0.35  
0.35  
8
87  
1500  
750  
4
43  
10  
5
108  
54  
1500  
750  
Performance values stated may be averages typical of the products listed. Contact factory for actual performance test  
reports on specific products.  
How to Select a Precision Pak XDH Filter:  
• Determine the ASHRAE efficiency desired.  
• Determine the face velocity needed to fit the system.  
• Select the shortest depth possible with a pressure drop that is acceptable.  
• Select the most economical filter based on the number of pockets per 24” x 24” size.  
600  
500  
65% Synthetic  
400  
85% Synthetic  
95% Synthetic  
XDH  
300  
200  
Fiber  
Glass  
Synthetic  
100  
0
Comparison of XDH to fiberglass  
and synthetic filters with the same  
media content.  
Data in graph is for a 26” deep, 10 pocket bag.  
Flanders PrecisionAire - Foremost in Air Filtration  
Toll Free: 1-800-637-2803  
 
Application Guidelines  
Astr Holding Frames are riveted together to form a  
bank and may be installed for upstream or down-  
stream service. K-Trac Filter Framing Modules are  
especially suitable for medium to large built-up filter  
banks. Smaller systems and systems with minimum  
upstream access space are best served using  
Sureseal Side Access Housings.  
Precision Pak XDH filters should be selected using  
24” x 12” and 24” x 24” face sizes. This allows for 12”  
increments in height and width of the filter bank and  
insures that replacement filters will be readily avail-  
able.  
Precision Pak XDH filters should be installed with  
pockets vertical wherever possible. It is acceptable to  
install 24” x 12” face size filters with pockets horizon-  
tal if necessary to meet the size requirements of the  
filter banks.  
Gasketed Headers  
Precision Pak XDH filters installed in Flanders K-Trac  
Filter Framing Modules or Sureseal Side Access  
Housings require polyfoam gaskets on opposite head-  
er sides to prevent air bypass.  
VAV Systems  
To specify Precision Pak XDH filters with gasketed  
headers, add suffix “S” or “H” to the model number.  
Use “S” gaskets on the sides parallel to the pockets  
and “H” for gaskets on sides perpendicular to the  
pockets.  
VAV systems can be designed using the full range  
depth of Precision Pak XDH filters. Filter banks  
should be sized so that the maximum rated flow at  
design conditions falls within the published recom-  
mended velocities. Precision Pak XDH filters in all  
standard depths can be applied at any capacity  
between zero flow and catalog-rated capacities.  
Prefilters  
Properly selected bag filters without prefilters will gen-  
erally require changeout annually in typical HVAC  
applications. Because of the frequent maintenance  
expense and increase in fan kW input using prefilters,  
they are seldom recommended on lower efficiency  
final filters.  
Installation Considerations  
Precision Pak XDH bag filters may be installed in  
Flanders Astr Holding Frames, K-Trac Filter Framing  
Modules, Sureseal Side Access Housing or in similar  
existing hardware.  
Guide Specifications  
1.0 General  
2.4 Pockets shall be bonded to galvanized steel cas-  
ings and assembled into a galvanized steel  
header with reverse-hemmed edges for safety.  
1.1 Medium and high efficiency self-supporting fil-  
ters shall be Precision Pak XDH extended sur-  
face type as manufactured by Flanders.  
2.5 Headers shall be gasketed with polyfoam on  
vertical sides to prevent leakage when installed  
in framing modules or Side Access Housings.  
1.2 Filter sizes, efficiencies and capacities shall be  
as scheduled on the drawings.  
2.6 Filters shall be UL 900 Class 2 listed.  
2.0 Filter Construction  
3.0 Performance  
2.1 Filters shall be constructed of polyolefin micro-  
fine synthetic media encased in a thin non-  
woven polyester backer mat.  
3.1 Initial and final resistances shall not exceed the  
scheduled values.  
2.2 Open area on the filter face for air passage shall  
be not less than 90%.  
3.2 Media area must equal or exceed that of the  
specified filter.  
2.3 Flexible internal support stitching shall maintain  
individual pockets in a controlled form under all  
rated air flow conditions. Stitching shall be  
sealed with thermoplastic resin. Edges shall be  
finished with a four-thread overlock stitch to pre-  
vent air bypass.  
3.3 The average efficiency shall be as determined  
by the ASHRAE Standard 52.1 and 52.2 test  
methods.  
3.4 The manufacturer shall guarantee performance  
as stated in its literature within tolerances as  
outlined is Section 7.4 of ARI Standard 850.  
REPRESENTED BY:  
Flanders PrecisionAire  
Foremost in Air Filtration  
Toll Free: 1-800-637-2803  
 

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