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VAV-PRC003-EN 9
Features and
Benefits
VariTrac Bypass Dampers
Bypass dampers are non-
communicating VariTrac dampers and
include an integrated fully-modulating
24 VAC electric actuator.
Field wiring errors are reduced with a
quick-connect harness that plugs into
the communicating bypass controller.
Dampers are nominally rated up to
1800–2400 fpm at 1.75" of static
pressure, depending on size.
For damper performance information,
see Table 2.
Round Bypass Damper Summary
• Round bypass dampers are available
with inlet diameters 6, 8, 10, or 12 inches
• Heavy gage galvanized steel cylinder
with rolled bend for high structural
integrity and corrosive resistance
• Metal-to-metal blade seal provides tight
shutoff for low leakage
• Aerodynamic blade design provides a
constant torque for stable operation at
high velocity
• Factory-installed, direct-coupled, fully-
modulating 24 VAC actuator
• Rated up to 2400 fpm at 1.75" of static
pressure
Rectangular Bypass Damper Summary
• Rectangular bypass dampers are
available in sizes 14 x 12, 16 x 16,
20 x 20, and 30 x 20 inches
• Formed heavy gage galvanized steel
frame, mechanically joined with linkage
concealed in the side channel
• Air linkage is minimized with an
opposed blade design with stainless
steel side seals
• Damper casing is 16 inches long and
constructed of heavy gage galvanized
sheet metal with
S
cleats on the inlet
and outlet for easy installation
• Blades are six-inch nominal width,
heavy gage galvanized steel
• A blade rotation stop feature prevents
over-rotation of the blades in the fully
open position
• Factory-installed, direct-coupled, fully-
modulating 24 VAC actuator
• Rated up to 3000 fpm at 2" of static
pressure