Model
HONEYWELL CN4620A1001 20NM, 230VAC, DAMPER ACTUATOR, NON-SPRING RETURN
CN7220A2007 20Nm,24Vac/Vdc, Modulating and floating/2-position control, Non-Spring return, Voltage Feedback Signal and without aux. Switch
CN7234A2008 34Nm,24Vac/Vdc, Modulating and floating/2-position control, Non-Spring return, Voltage Feedback Signal and without aux. Switch
Controller To Use
Can use TB7980A, TF243WN or TFM223N/U, depending if you want any external duct sensor or 3-speed fan switch.
GENERAL
These direct-coupled damper actuators provide modulating control for:
• air dampers,
• VAV units,
• air handling units,
• ventilation flaps,
• louvers, and
• reliable control for air damper applications with up to 4.6 m2
/ 50 sq.ft. (20 Nm / 177 lb-in) or 7.8 m2
/ 85 sq. ft.
(34 Nm / 300 lb-in) (seal-less dampers; air frictiondependent).
FEATURES
• Self-centering shaft adapter
• Access cover to facilitate connectivity
• Service/off for safe & easy servicing
• Rotation direction selectable by switch
• Declutch for manual adjustment
• Mechanical end limits
• Field-installable auxiliary switches
• Mountable in any orientation (no IP54 if upside down)
• Mechanical position indicator
• CE and UL certified
SPECIFICATIONS
Supply voltage 24 Vac/dc ±15%, 50/60 Hz;
Nominal voltage 24 Vac/dc, 50/60 Hz;
All values stated hereinafter apply to operation under
nominal voltage conditions.
Power consumption
CN7220A2007 6 VA / 3 W
CN7234A2008 6 VA / 3 W
Ambient limits
Ambient operating limits -20...+60 °C (-5...+140 °F)
Ambient storage limits -40...+80 °C (-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 Ω [0...20 mA]
Feedback signal
Limits ± 1 mA at 0...10 V
End switches (when included)
Rating 5 A (resistive) / 3 A (inductive)
Triggering points 5° / 85°
Torque rating
CN7220A2007 20 Nm (177 lb-in)
CN7234A2008 34 Nm (300 lb-in)
Runtime 95 sec (60 Hz) / 110 sec (50 Hz
or DC supply)
Rotation stroke 95° ± 3°
Dimensions see 'Dimensions' on page 8
Weight (without cables) 1.35 kg (3 lbs.)
Noise rating 40 dB(A) max. at 1 m
Certification CE & UL
Torque Per Module (Nm) Calculation
NON-SPRING RETURN (ON/OFF)
e.g : a) 200 x 200 (mm) [Damper Size (Net)] = 0.2 x 0.2 = 0.04 M2
x 10 (Factor) = 0.4 Nm
MFD-S (Motorized Fire Damper) Fail Safe Fast Running (SPRING RETURN)
e.g : a) 1,200 x 600 (mm) = 1.2 x 0.6 = 0.72 M2
x 10 (Factor) = 7.2 Nm
b) 1,500 x 1,200 (mm) = 1.5 x 1.2 = 1.8 M2
x 10 (Factor) = 18 Nm
c) 2,500 x 1,000 (mm) = 2.5 x 1.0 = 2.5 M2
x 10 (Factor) = 25 Nm
Torque Per Module (Nm) Calculation
NON-SPRING RETURN (ON/OFF)
e.g : a) 200 x 200 (mm) [Damper Size (Net)] = 0.2 x 0.2 = 0.04 M2
x 10 (Factor) = 0.4 Nm
MFD-S (Motorized Fire Damper) Fail Safe Fast Running (SPRING RETURN)
e.g : a) 1,200 x 600 (mm) = 1.2 x 0.6 = 0.72 M2
x 10 (Factor) = 7.2 Nm
b) 1,500 x 1,200 (mm) = 1.5 x 1.2 = 1.8 M2
x 10 (Factor) = 18 Nm
c) 2,500 x 1,000 (mm) = 2.5 x 1.0 = 2.5 M2
x 10 (Factor) = 25 Nm
US 1029 
MY 562 
CN 134 
AP 77 
AU 48 
SG 35 
CA 25 
JP 24 
