92
N20 Series (MN6120; MN7220)
These direct-coupled damper
actuators provide adjustable
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 (seal-less dampers; air
friction-dependent).
SPECIFICATIONS
Actuator Type .......................................Damper; Valve
Rotational Stroke ..................................95 ±3 degrees
Fail Safe Mode .....................................Non-Spring Return
Rated Torque ........................................175 lb-in. (20 Nm)
External Auxiliary Switches Available ..Yes, SW2-US
Electrical Connections .........................Enclosed screw terminal strip
(22 to 14 AWG)
Environmental Rating ...........................NEMA2; IP54
Frequency ............................................ 50 Hz, 60 Hz
Manual operation .................................Declutch mechanism
Mounting ..............................................Direct Coupled
Maximum Noise Rating,
Driving (dBA @ 1m) ..............................40
Timing, Nominal Driving at 60 Hz ........95 sec.
Power Consumption, Driving ............... 6 VA/6 W
Rotation to Open ..................................By switch
Rotational Stroke Adjustment ............... Dual Integral Adj. Stops
(3 degree increments)
Compatible Damper Shafts .................. 3/8 to 1.06 round or 3/8 to
11/16 square
(10 to 27 round or 10 to 18
square)
Shaft Adapter Type ..............................Self-centering clamping
Supply Voltage ..................................... 24 Vac ±15%
Materials ............................................... Plenum rated plastic housing
Operating Humidity Range (% RH) ......5 to 95% RH, non-condensing
Ambient Temperature Range ............... -5 F to 140 F (-20 C to 60 C)
Storage Temperature Range ................ -40 F to 175 F (-40 C to 80 C)
Weight .................................................. 3.2 lb (1.45 kg)
Includes ...............................................Mounting bracket, self-
centering shaft adapter
Comments ............................................Integral 1/2 in. NPSM conduit
connection.
APPROVALS
CE ........................................................89/336/ECC, 73/23/EEC
C-Tick ................................................... N314
Underwriters Laboratories, Inc. ........... UL873, Plenum Rated
Canadian Underwriters
Laboratories, Inc. ................................. cUL C22.2 No. 24-93
FEATURES
• Control for air damper applications with up to 50 sq ft
assuming 3.5 lb-in. per sq ft of damper area, velocity
independent.
• Patented self-centering shaft adapter.
• Access cover to facilitate connectivity.
• Declutch for manual adjustment.
• Mechanical end limits.
• Field-installable auxiliary switches.
• Rotation direction selectable by switch.
• Mountable in any orientation (no IP54 if upside down).
• Mechanical position indicator.
• CE approved. UL approved.
DIMENSIONS DIAGRAMS
M18923
3-15/16
(100)
SHAFT
A
DAPTER
SHAFT
ADAPTER
(REVERSED)
1-3/16
(20.6)
MIN 2-3/8 (60)
ANTI-ROTATION
BRACKET
9-1/16[+/-1/64] (230 [+/-.5])
25/32 (20)
9/32 (7)
25/128 [+0.002-0.004]
(5) [+0.05-0.10]
1/2 (13)
5/64 (2)
95°
1-7/8 (48)
8-25/32
(223)
5-3/16 (132)
3-5/8 (92)
Non-Spring Return Direct Coupled Actuator
N20 Series (MN6120; MN7220)