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Installation Instructions (Surface-Mount)
1. Position mounting base in desired location and secure using
(3) #4 flat head screws.
2. Twist and remove the trim ring from
the LED subassembly. Connect the
LED subassembly to a DC power
source by passing the wires through
the mounting base following the
wiring instructions in the next section
of this guide.
3. Once all electrical connections are
made, place the LED subassembly
housing into the mounting base,
line up the holes, and secure with
(3) machine screws (included). (see
Figure 4).
4. Place the trim ring over the light
making sure the tabs of the trim ring
engage with the openings in the
housing. Twist the trim ring on to
secure it.
Figure 4
WIRING INSTRUCTIONS
Sigma may be controlled by either basic on/off or by a remote
dimmer. Both the power (on/off) and dimming function is
achieved with the two lead wires provided.
1. Connect the light to a DC (or low voltage AC*) power source.
Connect the red wire to positive DC voltage and the black
wire to negative or ground.
*Note: Magnetic transformers only
2. Dimmer compatibility: If you are replacing halogen or
incandescent fixtures that use a remote DC dimmer, your new
lights will use the same power/control wires but may or may
not be compatible with the existing dimmer. If after testing
your lights with the existing DC dimmer you are not satisfied
with the performance, then we recommend the use of Imtra’s
Intervolt DC Dimmer which these lights have been optimized
for. Please contact Imtra or visit our website for details on this
dimmer.
3. Transformer compatibility: Sigma is designed to work with
10-40VDC as well as low voltage AC (from a magnetic
transformer) but on non-dimming circuits only. Electronic
transformers are not compatible. If dimming is required, then
the transformers may be replaced with LED converters sized
appropriately. Please contact Imtra for assistance.
Wire
Function
Red
+ Dim/Power
Black
– Dim/Power
NOTES ON WIRE SIZE
The PowerLED family of products comes equipped with
integrated driver electronics. These components are sensitive
to DC systems with voltage drops. Therefore, it is imperative to
select the correct wire size to supply DC voltage to the lights.
This prevents excessive impedance and voltage drops which can
cause premature failure in the PowerLEDs. It is recommended
that the supply wire size be selected according to the ABYC
Wiring Recommendations Chart for a 10% voltage drop. These
charts can be found at www.imtra.com.
Wiring Diagram
No Dimming
•
Single Switch Location
•
Sigma
PowerLED
Voltage Supply
(battery, transformer,
converter, etc)
1-Way Switch
1P/1T - On/Off
Sigma
PowerLED
