Provide a dedicated circuit at the required operating voltage at each panel and transmitter
mounting location. Follow all national and local wiring codes. A conductor connected to earth
ground should also be provided. The circuit must include a disconnect switch located within
easy reach of the panel.
Be sure that the step-down transformer provides 24 VAC and has the necessary volt-amp
rating to power each component in the system. Each control panel requires 0.75 VA, each
transmitter requires 2.4 VA, and each expansion pack requires 0.4 VA.
Connect the incoming power conductor to 18-24VAC, the return conductor to 18-24RET, and
the ground conductor to the green screw.
If minor maintenance work needs to be performed on the control panel, there is a power switch
for the panel to the left of the incoming power wires on the printed circuit board. By default,
this switch is in the “OFF” position.
Connecting the Remote Transmitters
The control panel does not supply power to the remote transmitters. However, power may be
daisy chained through the control panel to the transmitters. Use a two-conductor cable with
color-coded conductors of at least 18 AWG to connect the power. Use a shielded, twisted-pair
cable with color-coded conductors of at least 24 AWG to connect communication. A single
four-conductor cable may be used but will reduce the maximum distance the system can
cover. See figure 10 on page 53 and figures 16 and 17 on page 57 for details. If possible,
choose cables with color-coded conductors that follow the suggested color scheme listed on
the drawings.
IOM03
Rev 1.1 – May 18, 2021
16
CAUTION
Operating these devices 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 control
panel and transmitters if you are unsure of the correct power requirement.