Premises Wiring
Run the necessary wiring throughout the premises and pull the wires into the enclosure.
EMI (Electro Magnetic Interference) may cause problems: EMI may occur if you install the D9112 system or run system wires near the following:
•Computer network system
•Electrical lines, fluorescent fixtures or telephone cabling
•Ham radio transmitter site
•Heavy machinery and motors
•High voltage electrical equipment or transformers
•PBX telephone system
•Public service (police, fire departments, etc.) using radio communications
•Radio station transmitter site, or other broadcast station equipment
•Welding shop
If you think that EMI may be a problem, use shielded cable. The drain wire for the shielded cable must have continuity from terminal 10 on the D9112 to the end of the wire run. If continuity is not maintained, the shielded cable may aggravate potential noise problems rather than eliminate them.
Connecting the drain wire to ground at other than terminal 10 may also produce problems. If you cut the drain wire to install devices be certain to splice it together. Solder and tape all splices.
Installing the D9112 Assembly
1.Place the D9112 assembly over the inside back of the enclosure, aligning the large rectangular openings of the mounting skirt with the mounting hooks of the enclosure. Slide the D9112 down so it hangs on the hooks. See Figure 2.
2.Remove the tape from the #6x1/4" screw in the mounting tab on the D9112 assembly. The screw passes through the mounting tab and into the skirt mounting hole in the enclosure. Tighten the screw to secure the D9112 assembly in the enclosure.
3.Connect earth ground to the panel before making any other connections. See Connecting Earth Ground below.
Connecting Earth Ground | Terminal 10 |
To help prevent damage from electrostatic charges or other transient electrical surges, connect the D9112 to earth ground at terminal 10 before making any other connections. A grounding rod or cold water pipe are recommended earth ground references.
Do not use telephone or electrical ground for the earth ground connection. Use 16 AWG wire when making the connection. Do not connect any other panel terminals to earth ground.
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