Carnes EHBA User Manual

Fire Dampers

www.carnes.com E-23

Fire, Smoke & Ceiling Radiation Dampers

Model EHBA - Type A 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 EHBA 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 EHBA 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

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”Hor36”W x 72”H

1829mm x 914mm 914mm x 1829mm

*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
 Mounting

 Horizontal

 Vertical

3-11/16”

(94mm)

Damper = nominal - 1/4” (6mm)

Galv. steel
interlocking blades

Fusible link
(replaceable)
165°F standard

Galv. steel frame

Stainless steel
closure spring