Honeywell 11255 manual Alpha HT, High Temperature HEPA Filters, Sealant Types, General

Alpha HT

High Temperature HEPA Filters

See component chart on next page.

General

Flanders manufactures metal-frame separator-style HEPA filters for applications with high-temperature requirements up to 1,000°F (540°C) for exhaust air only and 500°F (260°C) for supply air. High-tem- perature filters are available with either a gasket or fluid seal. Filters with Blu-Jel®Fluid Seal have a maximum service temperature of 390°F (199°C)

HEPA Filters

Each HEPA filter has a minimum efficiency of 99.97% on 0.30 micrometer size particles when tested at rated capacity on a Q-107 Penetrometer. Each filter is challenged with an approved nearly monodispersed oil aerosol of 0.30 micrometer size and by measuring the upstream and downstream concentration of these particles with a light scatter- ing photometer, the penetration can be determined and the efficiency can be calculated.

Scan Tested HEPA Filters

Each Scan Tested HEPA filter has a minimum effi- ciency of 99.99% on 0.30 micrometer particles. Scan testing is in accordance with Section 6.2 of IEST-RP-CC034.1, HEPA and ULPA Filters Leak Tests. In the scan test, the filter is challenged with a high concentration of an approved oil erosol or PSL (Polystyrene Latex Spheres). The media p ck and pack-to-frame seal is scanned using pho- tometer or particle counter to insure that there are no leaks greater than .01% of the upst eam con- centration at 100 fpm face velocity. Scan testing is only available for the 500°F model.

Sealant Types

Two types of sealants for high-temperature HEPA filters are offered.

Silicone Sealant

This is a high temperature (RTV) ilastic-sealant sil- icone compound rated for continuous service up to 500°F(260°C). NOTE: This high-temperature sealant is not UL 586 approved.

Glass Pack Sealant For Exhaust Air Only

The glass p ck se l is rated for continuous service up to 1,000°F(540°C) in exhaust air applications only. It is a mat of submicron glass fibers that cre- ates a seal when compressed between the filter pack and filter frame. The glass packing is not an ad esive seal but a mechanical seal that functions much as t e glass fiber medium of the filter itself.

NOTE: Due to the possibility that the glass pack may shed glass fibers, the glass pack sealant should be used for exhaust systems only.

Alpha HT Filter Dimensions and Capacities

CFM CAPACITIES AND DIMENSIONS

Filter Depth	Filter Size and	Actual Face	CFM Capacity at Clean			Weight
(Inches)	Frame Depth	Size (Inches)	Pressure Drop, Inches w.g.			(Lb.)
	Designator		.65	1.0	1.35
	GG-F	24x24	650	1000	1300	38
	GC-F	24x12	300	455	590	26
11-1/2	YY-F`	23-3/8x23-3/8	615	945	1235	37
	YU-F	23-3/8x11-3/8	275	425	550	25
	GN-F	24x30	830	1275	1655	45
	CC-F	12x12	135	205	265	14

Flanders - Foremost in Air Filtration

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