FSAF24-BAL(-S) US

Spring Return, 24 V, 3-Position, 100% Open Override Operation at 250°F for limited time per UL555S testing

Technical Data

 

FSAF24-BAL(-S) US

Power supply

 

24 VAC ± 20% 50/60 Hz

 

 

24 VDC ± 10%

Power consumption

running

AC 9.5 VA 6.5W

 

 

DC 6W

 

holding

AC 5 VA 3W

 

 

DC 3W

Transformer sizing

 

10 VA (class 2 power source 24V only)

Application

For 3-position control of UL555S rated dampers in HVAC. Actuator sizing should be done in accordance with the damper manufacturer’s tests. In the absence of other information, use 10 in-lb of torque per square foot of area for opposed blade and 14 in-lb for parallel blade fire and smoke dampers at 1000 fpm air velocity.

The FSAF24-BAL is specifically designed to balance the air flow in ducts and simultaneously provide control of fire and smoke dampers. 0V = spring closed. 24V on wire 2, not 3 = drive to the potentiometer position (balanced flow). 24V on wire 3, regardless of the status of wire 2 = drive full open (smoke control extraction or pressurization). See Application Bulletin for details.

Operation

For 3-position control of UL555S rated dampers in HVAC. Actuator sizing should be done in accordance with the damper manufacturer’s tests. In the absence of other information, use 10 in-lb of torque per square foot of area for opposed blade and 14 in-lb for parallel blade fire and smoke dampers at 1000 fpm air velocity.

The FSAF24-BAL is specifically designed to balance the air flow in ducts and simultaneously provide control of fire and smoke dampers. 0V = spring closed. 24V on wire 2, not 3 = drive to the potentiometer position (balanced flow). 24V on wire 3, regardless of the status of wire 2 = drive full open (smoke control extraction or pressurization).

SAFETY NOTE

The actuator contains no components which the user can replace or repair.

Electrical connection

 

3 ft, 18 GA, 1/2” conduit connector

Overload protection

 

electronic throughout 0 to 95° rotation

Control signal

 

24 VAC/DC 3-position

Angle of rotation

 

20° to 95°, pot adjustable

Torque

 

133 in-lb [15 Nm]

Direction of rotation

spring

reversible with cw/ccw mounting

Position indication

 

visual indicator, 0° to 95°

 

 

(0° spring return position)

Manual override

 

3mm hex crank (shipped w/actuator)

Running time

motor

<75 seconds @ 250°F [121°C]

 

spring

< 20 seconds

Humidity

 

5 to 95% RH non-condensing

Ambient temperature

 

-22°F to 122°F [-30°C to 50°C]

Storage temperature

 

-40°F to 176°F [-40°C to 80°C]

Housing

 

NEMA type 1/IP40 (with flex conduit)

Housing material

 

zinc coated metal

Agency listings†

 

cULus to UL873 and CSA C22.2 No. 24-93

Noise level (max)

running

<45 dB(A)

 

spring

<62dB(A)

Servicing

 

maintenance free

Quality standard

 

ISO 9001, 5 year Belimo warranty

Weight

 

5.3 lbs (2.4 kg)

 

 

5.7 lbs (2.6 kg) for -S model

 

 

 

FSAF24-BAL-S US

 

 

Auxiliary switch

 

2 x SPDT 7A resistive, 2.5A inductive at

 

 

120/250VAC. UL listed, double-insulated,

 

 

one switch is set at 10°, one is adjustable

 

 

30° to 90°

Dimensions (Inches [mm])

0.65" [16.5]

3.25" [82.7]

 

2.24"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[57]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.19" [5]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.39" [10]

 

 

 

 

 

 

 

 

 

10.59" [269]

 

 

 

 

 

2.64"

 

 

 

 

 

 

 

 

 

 

 

 

5.85" [148.5]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.35" [9]

[67]

 

 

 

0.26" [6.5]

 

 

 

 

 

 

 

 

 

 

 

Standard

[98]

 

[80]

 

 

½” to 1.05”

 

 

 

 

 

3.86"

3.15"

Optional

½”1.97"

[50]

70793-00001.pdf

1.93"

 

[49]

M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.

800-543-9038 USA

177

866-805-7089 CANADA

203-791-8396 LATIN AMERICA

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321 Studios specifications FSAF24-BAL-S US, 177, DC 6W, DC 3W

FSAF24 specifications

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