Precisionaire Precisioncell Msh User Manual

PrecisionCell II M and MSH  
Extended Surface Mini Pleat Filters  
in "C" Channel Metal Frame  
Extended Surface Mini Pleat Filters  
in Metal Frame with Single 13/16" Header  
Bulletin PB1006-1106  
PrecisionCell II 4 inch deep in M and MSH designs  
are designed to be operated at 500 FPM. Both M  
and MSH Model PrecisionCell II's are offered in all  
standard sizes. Special sizes are not available.  
All PrecisionCell II models utilize state of the art  
minipleat technology which uses media separators  
made from thermoplastic glue beads to allow preci-  
sion spacing between the moisture-resistant  
microfine fiberglass media. The adjacent polymer  
bead separators cure into durable, hard strips sep-  
arating the media folds thereby creating a rigid  
pack assembly which maintains excellent pleat  
spacing continuity over the life of the filter.  
Both PrecisionCell II metal-framed models are  
bonded and sealed into a corrosion-resistant, metal  
frame with an expanded metal face grille on the  
downstream side to prevent media pack oscillation  
or blowout. Both metal framed models are the ideal  
choice where HVAC Systems pull in 100% humid  
outside air such as Hospitals.  
General:  
PrecisionCell II extended surface minipleat filters  
now offer the end user high efficiency filtration per-  
formance in minimal media pack depths of 4 inch-  
es deep in 60-65% (MERV 11), 80-85% (MERV  
13), and 90-95% (MERV 14-15), and are available  
in a corrosion resistant metal frame (M) for box  
style or optional metal frame with a single 13/16"  
header (MSH).  
Due to the rigid minipleat technology in combina-  
tion with the metal frame design, PrecisionCell II's  
are the ideal choice for use in existing and new  
installations where space is limited or where  
upgrading filter efficiency levels are required in  
existing units. Variable air volume systems, turbu-  
lent airflow, or high humidity applications where  
conventional filters fail, are good choices for  
upgrading to PrecisionCell II's in metal frame con-  
figurations.  
Important Features  
• High Efficiency Filtration in minimal, space-saving  
design.  
• This unique shallow-depth pack compacts up to 2  
times the media area found in conventional 12  
inch deep filters.  
• 3-to-1 ratio in shipping, storage, handling and dis-  
posal costs over conventional 12" deep cells  
• Excellent choice for upgrading older systems at a  
fraction of the cost.  
Flanders PrecisionAire - Foremost in Air Filtration  
Toll Free: 1-800-637-2803  
1
Standard Box Style  
Nominal Size  
WxHxD (inches)  
Nominal  
Capacity (CFM)  
Pressure Drop  
80-85%  
Approx. Media  
Area (Sq. Ft.)  
90-95%  
60-65%  
12x24x4  
16x20x4  
16x25x4  
18x24x4  
20x20x4  
20x24x4  
20x25x4  
24x24x4  
1000  
1111  
1389  
1500  
1388  
1666  
1736  
2000  
.75  
.75  
.75  
.75  
.75  
.75  
.75  
.75  
.70  
.70  
.70  
.70  
.70  
.70  
.70  
.70  
.55  
.55  
.55  
.55  
.55  
.55  
.55  
.55  
58  
64  
80  
86  
80  
96  
100  
115  
With Header  
Nominal Size  
WxHxD (inches)  
Nominal  
Capacity (CFM)  
Pressure Drop  
80-85%  
Approx. Media  
Area (Sq. Ft.)  
90-95%  
60-65%  
12x24x4  
16x20x4  
16x25x4  
18x24x4  
20x20x4  
20x24x4  
20x25x4  
24x24x4  
1000  
1111  
1389  
1500  
1388  
1666  
1736  
2000  
.85  
.85  
.75  
.75  
.75  
.75  
.75  
.75  
.80  
.80  
.70  
.70  
.70  
.70  
.70  
.70  
.65  
.65  
.55  
.55  
.55  
.55  
.55  
.55  
48  
53  
66  
71  
66  
79  
82  
95  
Notes  
1. PD represents clean pressure drop in inches w.g. Recommended final pressure drop for all models  
is 1.5 inch w.g.  
2. Actual filter face size of 24” x 24” and 24” x 12” is 5/8” undercut on height and width. All other sizes  
are 1/2” undercut on height and width. Actual filter depth is 3-3/4”  
3. Efficiency is average and is based on ASHRAE Standard 52.1 and 52.2 test methods.  
4. Performance tolerances conform to Section 7.4 of ARI Standard 850.  
5. Perfmormance values shown in this publication may be averages or estimates intended to generally represent product  
styles. Always contact factory for latest actual test data on specific Flanders Precisionaire models.  
Prefilters  
VAV Systems  
Prefilters are always a wise choice for the protec-  
tion of minipleat filters no matter what the efficiency  
or brand. The closely-spaced pleats are subject to  
face-loading (bridging) by lint and coarse particles,  
thus reducing their usual long life. A minimum 25-  
30% ASHRAE efficiency pleated panel filter such  
as the Flanders Precisionaire Prepleat 40 is recom-  
mended.  
Filter banks should be sized so that the face veloc-  
ity at maximum design conditions is 625 fpm or  
less. PrecisionCell II filters may be applied at any  
capacity between 0 and 625 fpm. Operating a filter  
bank at reduced flow will greatly increase expected  
filter life.  
Save Storage Space and Shipping Costs  
Using the 24” x 24” size as an example, a carton of  
four PrecisionCell II 4” filters has a volume of 5.3  
cubic feet and a weight of 26 lbs. Compare this to  
four 12” deep rigid separator-type filters packed in  
four cartons with a total volume of 16 cubic feet and  
total weight of 80 lbs.  
Save In-Line Space  
Compare the airway lengths of 22” PrecisionPak  
bag filters and 12” Rigid-Air filter to a 4”  
PrecisionCell filter when they are installed with 2”  
prefilters.  
Flanders PrecisionAire - Foremost in Air Filtration  
Toll Free: 1-800-637-2803  
3
Application Guidelines  
PrecisionCell II filters should be selected for  
new installations with 24” H x 24” W and 24”  
H x 12” W face sizes. These are the most  
widely used and stocked sizes. This allows  
for 12” increments in height and width of the  
filter bank and insures that replacement car-  
tridges will be readily available.  
PrecisionCell II filters should be installed with  
the pleats vertical wherever possible. It is  
permissible to install 24” H x 12” W face size  
filters with pleats horizontal if necessary to  
meet the size requirements of the filter bank.  
PrecisionCell II M and MSH  
Component Chart  
88655. 04 20 24 MSH D  
Efficiency Series  
Frame Style  
MSH - Metal  
w-13/16”  
89655. - 90-95%  
88655. - 80-85%  
86655. - 60-65%  
Single Header  
Nominal Depth  
04 - 3.75” Deep  
Gasket Location  
D - Downstream  
U - Upstream  
Nominal Width  
20 - (19-3/8”) wide  
HEPA Prefilters  
Nominal Height  
V - One Vertical Side  
PrecisionCell II filters are ideal as prefilters  
for Alpha Cell HEPA filters. Their light weight  
and 4” depth make them an excellent choice  
24 - (23-3/8”) tall  
for installation in the optional Prefilter Frame Assembly for the Alpha Cell HEPA Filter Holding Frame or in  
Surelock Side Access HEPA Housings.  
Specify the Surelock housing with an optional 4” wide prefilter track for the PrecisionCell II filters, in lieu of  
the 2” wide prefilter track for pleated panel filters. We recommend the selection of 80-85% PrecisionCell II  
filters as HEPA prefilters.  
Guide Specifications  
1.0 General  
2.3 The filter pack shall be enclosed and sealed with-  
in a corrosion-resistant metal frame.  
1.1 Medium and high efficiency extended surface  
filters shall be PrecisionCell II (M) (MHS) mini-  
pleat panel filters as manufactured by Flanders  
Precisionaire.  
2.4 PrecisionCell II MSH filters shall have a single  
13/16” diameter header on the air entering side.  
3.0 Performance  
1.2 Filter sizes, efficiencies and capacities shall be  
3.1 Initial and final resistances shall not exceed the  
scheduled values.  
as scheduled on the drawings.  
1.3 Filters shall be UL 900 Class 2 listed.  
3.2 Media area must equal or exceed that of the  
specified filter  
2.0 Filter Construction  
3.3 The average efficiency shall be as determined  
by ASHRAE Standard 52.1 and 52.2 test  
methods.  
3.4 The manufacturer shall guarantee performance  
as stated in the literature within tolerances as  
outlined in Section 7.4 of ARI Standard 850.  
2.1 The filter pack shall be constructed of water-laid  
microfine fiberglass media containing a water  
repellent binder formed into closely spaced pleats  
held in position by adhesive bead separators.  
REPRESENTED BY:  
Flanders PrecisionAire  
Foremost in Air Filtration  
Toll Free 1-800-637-2803  
4

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