N20, N34 SERIES
NON-SPRING RETURN DAMPER ACTUATOR
20/34 Nm (177/300 lb-in) FOR MODULATING CONTROL
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
2
4.6m
/ 50 sq.ft. (20 Nm / 177 lb-in) or 7.8m
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
Nominal voltage
All values stated hereinafter apply to operation under
nominal voltage conditions.
Power consumption
CN7220
CN7234
Ambient limits
Ambient operating limits
Ambient storage limits
Relative humidity
Safety
Protection standard
Protection class
Overvoltage category
Lifetime
Full strokes
Repositions
Mounting
Round damper shaft
Square damper shaft
Shaft length
Control signal
Input impedance
2
/ 85 sq.
Feedback signal
Limits
Torque rating
CN7220
CN7234
Runtime
Rotation stroke
Dimensions
Weight
Noise rating
1
PRODUCT DATA
24 Vac ±20%, 50/60 Hz;
24 Vdc -10...+20%
24 Vac, 50/60 Hz; 24 Vdc
6 VA / 6 W
8 VA / 6 W
-20...+60 ℃ (-5...+140 °F)
-40...+80 ℃ (-40...+175 °F)
5...95%, non-condensing
IP54 as per EN 60529
II as per EN 60730-1
II
60000
1.5 million
10...27 mm (3/8...1-1/16")
10...18 mm (3/8...11/16")
45° steps
min. 22 mm (7/8")
0(2)...10 Vdc
0(4)...20 mA
100 kΩ [0...10 V]
500 Ωm [0...20 mA]
± 1 mA at 0...10 V
20 Nm (177 lb-in)
34 Nm (300 lb-in)
95 sec (60 Hz) / 110 sec (50 Hz)
95°± 3°
see "Dimensions" on page 6
1.35 kg (3 lbs.)
40 dB(A) max. at 1 m
CN0B-0341CH33 R0407