ADA 100
®
Emergency Call System
Housing Devices, Inc.
Page
11
Medford, MA 02155
Copyright © 1998
800-392-5200
SYSTEM WIRING AND CONNECTIONS
General
1.
Install all conduit for the Master Station, Area Stations, Relay Card Cabinet, and
Battery Backup System Cabinet. Conduit shall also be installed for the power to the
Battery Backup System Cabinet. Consult the ADA 100 Riser Diagram (Appendix
Page 1) for connections.
2.
Make sure wiring shields are connected
ONLY at the BATTERY BACKUP
SYSTEM CABINET
to prevent “Ground Loops”. Tie all shields to a secure ground
clip which is connected to “Earth Ground” in a manner consistent with safety and code
requirements.
Master Station Wiring
1.
The Master Station shall be interconnected to each Area Station and all other system
components in conduit or surface metal raceway where exposed.
2.
Wiring shall be 4 twisted pair #18AWG with overall shield plus three (3) additional
conductors per each Area Station (shield not required).
3.
Make sure shields are clipped short and insulated with electrical tape to prevent
possible accidental conduction. Consult the Master Station Hook Up Diagram,
Appendix Page 2, for proper connections.
Area Station Wiring
1.
Each Area Station shall be interconnected in conduit or surface metal raceway where
exposed. Raceways and conduit shall be protected from water and excess moisture.
2.
Conduit placement shall be separate from other circuitry to minimize interference with
ADA 100 audio communications (e.g., fluorescent lighting).
3.
Each Area Station will be connected with 4 twisted pair #18AWG with overall shield.
4.
Make sure shields are clipped short and insulated with electrical tape to prevent
possible accidental conduction. Consult the Area Station Hook Up Diagram, Appendix
Page 3, for proper connections.
Relay Card Cabinet Wiring
1.
The Relay Card Cabinet shall be interconnected to each system component in conduit
or surface metal raceway where exposed.
2.
Wiring shall be 4 twisted pair #18AWG with overall shield. Make sure shields are
clipped short and insulated with electrical tape to prevent possible accidental
conduction. Consult the Relay Card Cabinet Hook Up Diagram, Appendix Page 4, for
proper connections.
Battery Backup System Wiring
1.
The Battery Backup System shall be interconnected to each system component in
conduit or surface metal raceway where exposed.
2.
Wiring shall be 4 twisted pair #18AWG with overall shield.
3.
Make sure wiring shields are connected
ONLY at the BATTERY BACKUP
SYSTEM CABINET
to prevent “Ground Loops”. Tie all shields to a secure ground
clip which is connected to “Earth Ground” in a manner consistent with safety and code
requirements.
4.
Consult the Battery Back Up Hook Up Diagram, Appendix Page 5, for proper
connections. Please use care during installation as improper installation may void the
manufacturer’s warranty.
