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4.2 Installation Tips
1. Group the incoming wires through the top of the enclosure. For easy identification and
neatness use a wire tie to group wires.
2. Be sure to connect a solid Earth Ground (from building system ground / to a cold water
pipe) to the Chassis Earth Ground Mounting Lug, and to connect the Earth Ground Wire
Lugs from the Main Chassis to the ground screw on the backbox.
4.3 Installing Adder Modules
The MR-3318 Fire Alarm panel is shipped pre-assembled with all main components and
boards.
The following items can be installed in the field:
•
PR-300 Polarity Reversal And City Tie Module
•
PCS-100 Power Supply Interface Board
See the following diagrams for adder module installation locations. For Jumper or DIP Switch
settings refer to Table 9 and for Wiring Specifications see 7.1 Wiring Tables.
Attention: DO NOT install cable through bottom of the box. This space is reserved
for Batteries.
!
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