Installation Instructions

Installation Instructions
Document No. 129-403
October 2, 2009
OpenAir™ Electronic Fusible Link
Item number 129-403, Rev. BA Page 1 of 3
Product Description
The Electronic Fusible Link (EFL) is a heat responsive device
used with the Siemens OpenAir™ UL listed fire and smoke
control damper actuator.
Upon exceeding the temperature limits of the EFL model
ordered and installed, the EFL cuts power to the electronic
damper actuator and the actuator’s spring return mechanism
closes the damper.
NOTE: The EFL must be factory-installed. The UL rating
carried by the specific damper and actuator is
assigned as an assembly and cannot be added in
the field.
Replacement EFLs may be field-installed with local authority
approval.
Contents
• Electronic Fusible Link
• 2 – 1.25-in (31,75 mm) hex head self-drilling screws
Product Numbers
ASK79.165 165°F (74°C)
ASK79.212 212°F (100°C)
ASK79.250 250°F (121°C)
ASK79.350 350°F (177°C)
NOTE: The EFL is compatible only with OpenAir
GNDxxx.xU/F UL listed fire and smoke damper
actuators.
Warning/Caution Notations
WARNING:
Personal injury/loss of life may
occur if you do not follow the
procedures as specified.
CAUTION:
Equipment damage may occur if
you do not follow the procedures
as specified.
Required Tools
• 1.25-inch (32 mm) drill or hole punch
• 5/16-inch (8 mm) Hex drive
Expected Installation Time
15 minutes
Prerequisites
Appropriate OpenAir GND series damper actuator.
Operation
When the EFL detects that its temperature settings is
exceeded, the power to the electronic damper actuator is
shut off and the spring mechanism closes the damper.
The manual override reset button (See Figure 1) on the
EFL can be pressed when the temperature has cooled
below the EFL setpoint. The EFL device will again be
operational.
CAUTION:
Before resetting any sensor, a careful
inspection of the damper, damper actuator,
and sensor should be made.
Damage to the temperature sensor will
result in loss of damper control.
WARNING:
Before attempting to reset the ELF by
depressing the Override/reset button, take
the precaution to protect exposed skin as
the EFL will be extremely hot to the touch.
Figure 1. Parts Description.