Precisionaire FB1100-0606 manual Application Guidelines, Gasketed Headers, Prefilters, General

Application Guidelines

Precision Pak filters should be installed with pockets vertical wherever possible. It is acceptable to install 24" x 12" face size filters with pockets horizontal if necessary to meet the size requirements of the filter banks.

Gasketed Headers

Precision Pak filters installed in Flanders K-Trac Filter Framing Modules or Sureseal Side Access Housings require polyfoam gaskets on opposite header sides to prevent air bypass. To specify

Precision Pak filters with gasketed headers, add suffix “SA” (side access), “GU” (upstream), “GD” (downstream) and “GS” (sides) to the model number.

Prefilters

Properly selected bag filters without prefilters will generally require change out annually in typical HVAC applications. Because of the frequent maintenance expense and increase in fan kW input using prefilters, they are often recommended with 85% and 95% efficient Precision Pak final filters. However, the energy cost to operate a prefilter seldom warrants their use with 55% or 65% filters.

Guide Specifications

1.0 General		2.5	Pockets shall be bonded to corrosion-
1.1	Medium and high efficiency self-supporting filters
			resistant steel casings and assembled into a
	shall be Precision Pak extended surface type as		corrosion-resistant steel header.
	manufactured by Flanders.	2.6	Filters shall be UL 900 Class 2 or Class 1
1.2	Filter sizes, efficiencies and capacities shall
			listed.
	be as scheduled on the drawings.
		3.0 Performance
2.0 Filter Construction		3.1	Initial and final resistances shall not exceed the
2.1	Filters shall be constructed of lofted fiberglass		scheduled values.
	or micro-fine synthetic media encased in a	3.2	Media area must equal or exceed that of the
	thin non-woven polyester backer mat.
			specified filter.
2.2	Open area on the filter face for air passage
		3.3	The average efficiency shall be as determined
	shall be not less than 90%.
			by the ASHRAE Standard 52.1 and 5.22 test
2.3	Flexible internal support stitching shall maintain
			methods.
	individual pockets in a controlled form under all rated	3.4	The manufacturer shall guarantee
	air flow conditions. Stitching shall be sealed with
			performance as stated in its literature within
	thermoplastic sealant. Edges shall be finished with
			tolerances as out-lined is Section 7.4 of ARI
	over lock stitch to prevent air unraveling.
			Standard 850.
2.4	Pockets shall be 100% stake-through

crimped to prevent media pullout.

Flanders PrecisionAire ~ Foremost in Air Filtration

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