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HONEYWELL NON-SPRING RETURN DAMPER ACTUATOR 20/34 Nm (177/300 lb-in) FOR MODULATING CONTROL

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HONEYWELL NON-SPRING RETURN DAMPER ACTUATOR 20/34 Nm (177/300 lb-in) FOR MODULATING CONTROL

Model
 
CN7220A2007 20Nm,24Vac/Vdc, Modulating control, Non-Spring return, Voltage Feedback Signal and without aux. Switch
CN7234A2008 34Nm,24Vac/Vdc, Modulating control, Non-Spring return, Voltage Feedback Signal and without aux. Switch

GENERAL
 
These direct-coupled damper actuators provide modulating
control for:
• Air dampers
• VAV units
• Air handlers
• Ventilation flaps
• Louvers, and
• Reliable control for air damper applications with up to 4.6m2  / 50 sq.ft. (20 Nm / 177 lb-in) or 7.8m2  / 85 sq.ft. (34 Nm / 300 lb-in)(seal- less damper blades; air friction-dependent) 

FEATURES
 
• New self-centering shaft adapter
• Access cover to facilitate connectivity
• Declutch for manual adjustment
• Mechanical end limits (CN7220 only)
• Field-installable auxiliary switches
• Rotation direction selectable by switch
• Mountable in any orientation (no IP54 if upside down)
• Mechanical position indicator

SPECIFICATIONS
 
Supply voltage 24 Vac ±20%, 50/60 Hz;
 24 Vdc -10...+20%
Nominal voltage 24 Vac, 50/60 Hz; 24 Vdc
All values stated hereinafter apply to operation under
nominal voltage conditions.
Power consumption
CN7220 6 VA / 6 W
CN7234 8 VA / 6 W
Ambient limits
Ambient operating limits -20...+60 ℃ (-5...+140 °F)
Ambient storage limits -40...+80 ℃ (-40...+175 °F)
Relative humidity 5...95%, non-condensing
Safety
Protection standard IP54 as per EN 60529
Protection class II as per EN 60730-1
Overvoltage category II
Lifetime
Full strokes 60000
Repositions 1.5 million
Mounting
Round damper shaft 10…27 mm (3/8...1-1/16”)
Square damper shaft 10...18 mm (3/8...11/16”)
 45° steps
Shaft length min. 22 mm (7/8”)
Control signal 0(2)...10 Vdc
 0(4)...20 mA
Input impedance 100 kΩ [0...10 V]
 500 Ωm [0...20 mA]
Feedback signal
Limits ± 1 mA at 0...10 V
Torque rating
CN7220 20 Nm (177 lb-in)
CN7234 34 Nm (300 lb-in)
Runtime 95 sec (60 Hz) / 110 sec (50 Hz)
Rotation stroke 95°± 3°
Dimensions see “Dimensions” on page 6
Weight 1.35 kg (3 lbs.)
Noise rating 40 dB(A) max. at 1 m

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