Honeywell 11255 Precision Pak, Extended Surface Bag Filters, General, Installation Considerations

Precision Pak

Extended Surface Bag Filters

Synthetic Class 1: PAPxx**Sxxxxx1 Synthetic Class 2: PAPxx**Sxxxx Glass Class 1: PAPxx**Gxxxxx1 Glass Class 2: PAPxx**Gxxxx (** insert 50, 65, 85 or 95 for ASHRAE ffici ncy)

General

Precision Pak extended surface bag filters are designed for use in most commercial or industrial HVAC systems where medium to high efficiency fil- tration is required. Precision Pak filters are available in two media types: lofted fiberglass and micro-fine synthetic media with average efficiency ranges of 55%, 65%, 85%, and 95% per ASHRAE Standard

52.1test methods. Operating face velocities up to 625 fpm are available for all models. Precision Pak filters in depths up to 22” are suited for variable air volume systems. Filters with greater depth are not recommended.

Precision Pak filters are UL 900 Class 2 listed as a standard and are also available in UL Class l.

Installation Considerations

Precision Pak bag filters may be installed in Flanders Type 9 Holding Frames, K-Trac Filter Framing Modules, Sureseal Side Access Housings, or in similar existing hardware.

Type 9 Holding Frames are rive ed oge her to form a bank and may be installed for ups ream 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 A ess Housings.

Physical D ta

Media: Lofted fibergl ss or micro-fine synthetic

Media Backer: Non-woven polyester

Pocket Sealant: Thermoplastic resin

Pocket Retainer: 26 ga. corrosion-resistant steel

Header: 11/26” wide 26 ga. corrosion-resistant steel

Operating Limits: 100% RH and 190° 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”)

Important Features

•Low initial pressure drop provid s longer life.

•Adjustable-width s i ch d pock ts provide aerodynamics for op imal inflation.

•Wide range of cartr dge depths, efficiencies and operating capac t es are available.

•Edges have an overlock stitch.

•Available in lofted fiberglass or synthetic media.

•100% stake-through pocket retainers

•UL 900 Class 1 or 2 available

Flanders - Foremost in Air Filtration

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