Specifications

FS-250 Installation and Operation Manual
22
Remove Knock-Outs
Prepare the enclosure for electrical wiring, break out the appropriate conduit entry points.
Segregation is required between power limited and non-power limited conductors. In order
to maintain the minimum separation, the following wire routing is illustrated. Separation of
at least a 1/4 inch is required between the non-power limited and power limited conductors.
Power limited and non-power limited wiring must be run in separate conduit.
Attach conduit (if required) and run wires as required. Label each field cable for future
reference.
Basic system wiring and detector siting must be in accordance with NFPA 72 or other
instructions from the appropriate local authority. Unit connections and limitations are as
indicated on the wiring diagrams included in System Wiring part of this manual.
Wire reference data are included in Appendix A.
Main Board Installation
• Secure the board to the back of enclosure using the eight #6-32 x 1/4 screws provided.
• Secure the bridge rectifier to the back box using the thermal pad and a #6 keps nut. See
drawing for details. Plug bridge rectifier into J4 on the Main Board.
Keps Nut, #6-32
Thermal Pad
Bridge Rectifier
FS-250
Bridge Rectifier Mounting
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