Specifications

JOHNSON CONTROLS
2-74
FORM 102.20-N1 (1109)
Installation
VISUAL CONTROL FILTER CLAMPS FOR HEPA FILTERS
Part Number Latch Model Number Length (L)
029-22081-000
 
Application:(See Fig. 2-117, 2-118 & 2-119 for application)
029-22082
 
Application:(See Fig. 2-117, 2-118 & 2-119 for application)
HEPA Filters
Welded Bevel Seal Frame
Extruded Aluminum Frames for Gasketed HEPA
Filter Installations
The Bevel Seal frame is a factory welded, extruded
aluminum frame developed specically for High
Efciency Particulate Air (HEPA) lter installations.
Standard Bevel Seal frames accommodate multiple
sizes of gasketed HEPA lters 11-1/2" deep. (See Fig.
2-116, 2-118 and 2-119.)
Two Stage Gasket Compression Prevents
Leakage
The Bevel Seal frame features a two level sealing
surface connected by a bevel. This causes the lter
gasket to be compressed in two stages as clamping
pressure is applied. The outer edge of the gasket is
compressed to a greater degree than the inner portion of
the gasket. (See Fig. 2-119.)
In the event excessive clamping pres-
sure is applied, the individual cells in
the gasket material can be fractured
causing the gasket to relax, allowing
leakage.
FIG. 2-116 – HEPA FILTER FRAME CROSS
SECTION VIEW
LD06647A
2"
2"
MAIN RUNNER
PERIMETER EXTRUSION
T-SECTION PERIMETER SECTION -
TYPE H
2"
Visual Control Filter Clamps
(See Fig. 2-117.)
HEPA Filter Applications
Visual Control clamps are designed for use with any
conventional gasketed HEPA lter. Located at midpoint
of each lter edge, the calibrated spring-loaded clamps
maintain up to 100 pounds pressure against the lter at
each clamping point. Four clamps are used per lter to
assure uniform pressure against the gasket. The clamps
have a 1-1/2" wide bearing surface.
Easy Clamp Installation
No special tools are required for proper clamp
installation. Tighten the bolt head until it is ush with
the clamp face to achieve the prescribed compression.
Proper clamping pressure is created indenitely by the
calibrated spring.
Single lter clamps are used around the perimeter of the
frame bank. Double clamps are used along main runners
to secure a lter on either side of the T-section. (See
Fig. 2-117, 2-118 and 2-119.)
LD06648-1
11-1/2"
ASTROCEL
HCX
SINGLE
FILTER
CLAMPS
(PERIMETER)
RED
DOUBLE
FILTER
CLAMPS
(T. SECTION)
SILVER
FIG. 2-117 – VISUAL CONTROL FILTER CLAMPS