providing power to the detector through a dedicated circuit from the service panel. In some
very noisy situations, a line filter can be connected in the power supply circuit just ahead of the
wiring connections at the detector.
Provide a dedicated circuit at the required operating voltage at each detector mounting
location. Follow all national and local wiring codes. The wiring should be at least 14 AWG. A
conductor connected to Earth ground should also be provided. The circuit must include a
disconnect switch located within easy reach of the detector.
If the detector operates from a voltage other than 120 VAC, be sure that the step-down
transformer provides the correct secondary voltage and has the necessary volt-amp rating.
The power requirement for the detector is listed on the label in the lower, left corner of the front
panel.
Color-coded wires exiting the detector housing through the top, right conduit connector are
provided for connecting the operating voltage to the detector. Therefore, it should not be
necessary to open the front cover of the detector when connecting the voltage supply.
Connect the hot power conductor to the black wire and the neutral conductor to the white wire.
If using 120 VAC, also connect the ground conductor to the green wire.
If minor maintenance work needs to be performed on the detector, there is a power switch for
the detector to the left of the incoming power wires on the printed circuit board. By default, this
switch is in the “ON” position so that the front cover does not need to be opened during the
initial installation.
IOM01
Rev 1.0 – December 22, 2020 16
Note
Do not operate the detector on the same AC circuit as the ventilation components. Doing
this will almost always cause improper detector operation.
CAUTION
Operating this detector with the incorrect voltage and power requirement can cause internal
electrical components to overheat and fail. Operation with the wrong power requirements
will void the manufacturer’s warranty, and the installer will be responsible for any damage
that occurs.
Contact Brasch Environmental Technologies, LLC before connecting power to the detector if
you are unsure of the correct power requirement.
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