Belimo FSNF230 US User manual

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 3ft[1m], 18 ga, 3 color coded leads (230V)
3 ft [1m], 18 ga, 2 color coded leads (24V)
Aux switch: 3ft[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.)
LISTED
94D5
TEMP. IND &
REG. EQUIP.
UL

1.97"
3.15" [80]
3.86" [98] 3.10" [78]
2.24"
[57]
[5]
[50]
1.93"
[49]
2.89"
[73.5]
2.64"
[67] 0.26" [6.5]
5.85" [148.5]
10.20" [259]
0.35" [9]
0.39" [10]
0.65" [16.5]
0.19" [5]
[ø41.2]
ø1.62"
[191.6]
7.54"
-S models only
Standard:
1/2" to 1.05"
Optional*
3/8" to 3/4"
*with K4 US
clamp
0.19"
Dimensions (All ratings in brackets are metric.)
D058
Wiring
Provide overload protection and disconnect as required.
Actuators may be connected in parallel. Power
consumption must be observed.
1 C N (230V)
2 H H (230V)
3 Ground
1
2
FSNF24
FSNF230
Wht
Blk
No ground on 24 V models
24V
C
H
230V
L1
L2
W192
2
1
(FSNF24-S/230-S)
230 VAC
24 VAC
®
12

13
Auxiliary switch wiring for FSNF24-S,FSNF230-S
Parallel actuator wiring
W193
1
1
1
2
Gnd
1
2
Gnd
Wht
Blk
24V
C
H
230V
L1
L1
The typical US fire-smoke damper requires 5-15 in-lb torque
per square ft. [6-17 Nm per square meter] at 350°F [171°C]
under dynamic load (2400 fpm [12m/s] velocity).
The FSNF will operate multi-section dampers using multiple
actuators for multiple sections. Some of the methods used are
shown below.
Multi-section damper assemblies –typical applications
Application information
Replacement applications
When actuators fail on existing dampers, the local authority having
jurisdiction sets the code requirements for replacement actuators.
The local inspector or fire marshal should be consulted. In most
jurisdictions, the replacement actuator must be “equal or
better”.
The FSNF will meet or exceed requirements, in most applications.
Caution must be used when replacing failed motors with new
Belimo actuators. Many old competitive motors did not have
internal springs and depended on external springs on the side of the
damper or wrapped around the damper shaft to close the damper.
Remove excess parts without interfering with fire functions.
In some cases, the damper must be replaced because the
damper would have to undergo major modifications to replace
an actuator.
Call Belimo to obtain a pdf version of a guide to replacement
smoke damper actuators including a checklist for proper testing.
Smoke Control and Combination Fire and Smoke Control
Actuator FSNF
All smoke and combination fire and smoke dampers shall be
provided with Belimo FSNF US actuators. No substitutions
allowed.
Damper and actuator shall have UL555S Listing for 350°F [171°C]
(250°F [121°C]) and shall drive open in 15 seconds and spring
closed in 15 seconds.
Typical specification
1
2
For end position indication, interlock control, fan startup, etc.,
FSNF24-S and FSNF230-S incorporate two built-in auxiliary
switches: 2 x SPDT, 7A (2.5A inductive)@125/250VAC,
UL listed, 5°and 85°.Switch rating 250°F [121°C] 1/2 hour only.
Meets UL and CSA requirements without the need of an
electrical ground connection.
FSNF24-S
FSNF230-S
1
2
S1
S2
S3
S4
S5
S6
NC
NO
NC
NO
5°
85°
No ground on 24 V models.
®
Single section
for one
FSNF actuator
Two sections for
two FSNF actuators
Maximum area
one FSNF actuator Maximum area for two FSNF actuators
Large multi-section assemblies
Use of blank-offs between damper sections to
provide space for actuator mounting.
Blank-off
Channel