Carnes EHCA User Manual
Fire, Smoke & Ceiling Radiation Dampers
Fire Dampers
E-24 www.carnes.com
Model EHCA - Type A Slimline Curtain Fire Damper
UL 555 Classified 1-1/2 and 3 Hours, For Use in Dynamic or Static Systems
t Application and Design
The Model EHCA is UL Classified for installation in
walls, floors and partitions with a fire rating of less than
3 hours. This damper may be installed vertically or horizontally in static systems or dynamic HVAC systems that
continue to run in the event of fire. (See optional 3 hour
rating.)
Standard Construction:
Frame: roll formed frame, galvanized steel
Blades: low profile roll formed, galvanized steel
Closure Springs: stainless steel constant force coil
Fusible Link - UL-33: UL listed 165°F (standard),
212°F (optional)
Maximum Velocity: 2000 fpm (10.2 m/s)
Maximum Pressure: 4” w.c. (1kPa)
Model EHCA meets or complies with the following as a fire damper:
All major building codes, including IBC/ICC International Code
UL 555 Listing 1-1/2 and 3 hour - File #R25410
ULC S112
NFPA 90A, 80
Note: Dampers are furnished approx. 1/4” undersized as given duct
dimensions, unless otherwise noted by breakaway connection.
Standard Sizes (duct) 1-1/2 & 3 Hour
Min. V or H Max. Vertical Size
Max. Horizontal Size
6”W x 6”H
152mm x 152mm
*72”W x 36”H
1829mm x 914mm
*36”W x 36”H
914mm x 914mm
*May consist of multi-sections
Options:
Factory Sleeve
Retaining Angles
One Side
Both Sides
3 Hour Rating
Out of Wall Construction Available Vertical
Only 42”W x 48”H Max. Size
Mounting
Horizontal
Vertical
2-3/16”
(56mm)
Nominal size - 1/4” (6mm)
Galv. steel
interlocking
blades
Fusible link
(replaceable)
165°F std.
Galv. steel
frame
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