Instruction manual

kept separate and input leads should never be placed in the

same conduit as power leads. We recommend separating

connecting wires into bundles: power, signal, alarms and out-

puts. These bundles should then be routed through individual

conduits. Shielded sensor cables should always be terminated

at panel ground.

If additional RFI attenuation is required, noise suppression

devices such as an R.C. snubber at the external noise source

may be used. If you wish, you may order this suppressor

directly from Athena, part number 235Z005U01.

Figure 4. Contact Identification

M o u n t i n g

Wi r i n g

Remove static-protective wrapping material from the

instrument. Avoid inducing static charges to controller while

handling and mounting. Insert the controller into the panel

cutout from the front of the panel.

Place the mounting catches into the appropriate mounting

slots at the top and bottom of the case housing and tighten

the mounting screws to secure the controller firmly to the

panel.

Note: For some panels, it may be necessary to first remove

the controller chassis from the case housing to access the

mounting catches from the inside. Press the grips on each

side of the bezel firmly until the tabs release and slide the

chassis out of the housing. Install the housing and secure

it with the mounting screws to the panel. To re-insert the

controller chassis back into its case, press both bezel grips

simultaneously and slide the controller into the housing until

the tabs engage.

IMPORTANT: All electrical wiring connections should be made

only by trained personnel, and in strict accordance with the

National Electrical Code and local regulations.

The Series 18/19/25 controllers have built-in circuitry to

reduce the effects of electrical noise (RFI) from various

sources. However, power and signal wires should always be

If the unit has been

shipped with mounting

catches already

installed in the top and

bottom slots in the case

housing, they must be

removed to allow

insertion of the

controller into the

panel cutout.