Fire and smoke spring return actuators FSNF230 (-S), FSNF24 (-S)
70 in-lb [7.9 Nm], spring return, 350°F [177°C] for limited time, nominal 15 sec. operation
Application:
The type FSNF spring-return actuator is intended for the
operation of smoke and combination fire and smoke dampers
in ventilation and air-conditioning systems. The actuator will
meet requirements of UL555 and UL555S when tested as an
assembly with the damper and will meet requirements of UBC
for 15 second opening and closing.
Square footage of damper operated will depend on make and
model and the temperature required.
Operation
Mounting of the actuator to the damper shaft or jackshaft is
via dual square shaft fittings or cold-weld clamp. Teeth in the
clamp and V-bolt dig into the metal of both solid and hollow
shafts maintaining a perfect connection. The specially
designed clamp will not crush hollow shafts. The bottom end
of the actuator is held by an anti-rotation strap or by a stud
provided by the damper manufacturer.
The actuator is mounted in its fail safe position with the
damper blade(s) closed. Upon applying power, the actuator
drives the damper to the open position. The internal spring is
tensioned at the same time. If the power supply is interrupted,
the spring moves the damper back to its fail-safe position.
Accessories
All AF/NF linkages may be applied.
Order part 22965-00001 for square shafts.
Technical Data FSNF230(-S) FSNF24(-S)
Power supply 230 VAC ± 10% 24 VAC ± 20%
50/60 Hz 50/60 Hz
Power consumption Running: 18 W, .13A
Holding: 6 W, .04A
Transformer sizing 27 VA Class 2 power supply
Electrical connection 3 ft [1m], 18 ga, 3 color coded leads (230V)
3 ft [1m], 18 ga, 2 color coded leads (24V)
Aux switch: 3 ft [1m], 18 ga, appliance cable
Overload protection Electronic throughout 0 to 95° rotation
Auto-restart after temporary overload
Electrical protection Grounded enclosure 230 V
Double insulated aux switches
Angle of rotation 95°
Torque 70 in-lb [7.9 Nm] minimum
from 32°F to 350°F [0°C to 177°C]
Direction of rotation Spring return can be selected by
CCW/CW mounting
Position indication Visual indicator, 0° to 95°
Running time Between 32°F and 350°F [0°C to 177°C]
Motor: apx. 15 sec at rated voltage
and torque
Spring: apx. 15 sec
Auxiliary switches 2 x SPDT 7A (2.5A inductive)@
125/250VAC, UL listed, 5° and 85°
Humidity 5 to 95% RH noncondensing
Ambient temperature 32°F to +122°F [0°C to +50°C]
Storage temperature -40°F to +176°F [-40°C to +80°C]
Housing NEMA 1, zinc coated steel
Gears Steel - permanently lubricated
Agency listings UL listed to UL873 and CAN/CSA
C22.2 No. 24, NY BEC & CSFM (24V)
Servicing Maintenance free
Quality standard ISO 9001
Weight 6 lbs (2.75 kg.)
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