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 friction-dependent).

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 kW [0...10 V]
500 W [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