Important Notices; Installation Tips - SentexSystems CROWN JEWEL Installation Instructions Manual

Telephone entry system

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Advanced features programming manual (39 pages)

Table Of Contents

Table of Contents

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The Crown Jewel unit contains static sensitive parts. To avoid damage to the static

sensitive parts, ground the unit and yourself while handling the board(s).

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Please follow the instructions in this manual closely. This document covers the specific

actions needed to install the Crown Jewel system. An incorrect installation could end up

causing you and your customer needless hours of aggravation.

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Prevent lightning damage to the unit. Install a Telephone Line Surge Suppresser as

close to the Crown Jewel as possible.

The sections that follow contain detailed procedures for each step required to install a Crown Jewel

system. In addition to those specific procedures, the following installation tips will help ensure your

installation is done correctly and efficiently.

1. GROUND THE UNIT. The Crown Jewel contains parts which may be damaged by static

discharge. A proper earth ground connected to the lower left grounding screw shown in Figure 3

will significantly reduce the chances of damage or improper operation. The shielding in the cables

specified for all remote sensors and controls should also be connected to the earth ground at the

Crown Jewel cabinet end of the cable only.

To be effective, the ground connection must be made by running 12 awg copper wire to a good

ground point (e.g., an electrical panel, a metallic cold water pipe that runs into the earth, or a

grounding rod at least 10 feet in length that is driven into the earth) within 12 feet of the unit. Even

if you have a good earth ground, you should try to discharge any static before handling the circuit

boards. WARNING: Damage caused by static discharge is not covered by warranty.

2. PROVIDE POWER FROM A DEDICATED SOURCE. The outlet(s) into which you plug the Sentex

provided transformer or a DC power supply should each be wired to their own circuit breaker. The

optional CCTV must be plugged into a separate outlet. This will reduce line noise introduced into

system power and minimize the risk of having other equipment interrupt unit operation. Each

Crown Jewel unit and any door strikes must have their own individual transformer.

3. DO NOT OVERLOAD THE TERMINAL BLOCKS. The terminal blocks used in the Crown Jewel

are removable and the pins are soldered into the boards. To connect your wires, remove the

"head" from the correct terminals and open the screws. Insert the wire into the correct opening on

the front and tighten the screw until the wire is held snugly. When you have made all connections

for a given "head", plug it back onto the pins designated for that terminal block. Do the same for

the optional CCTV board.

Stranded wire must be between 16 and 24 awg. Solid wire must be between 18 and 24 awg.

This is the total thickness measurement so, if you are putting two wires in, the combined thickness

must fall within this range. NEVER try to insert more than two wires per terminal.

4. ENSURE GOOD CONNECTIONS. A light tug on the wire will tell you if the connection is secure.

When reconnecting unit components, make sure all pins are straight on chips, connectors, and

terminal block heads.

5. READ THE MARKINGS CAREFULLY. The connection points are marked on the boards clearly.

Before making any connections, be sure to read the markings and check it against the

corresponding figure in these instructions so that you understand the connection you are making.

6. TRAIN YOUR CUSTOMER. The Crown Jewel is easy to operate when you take a few minutes to

train the user, but untrained users can cause serious problems for you and for themselves.

SPEND THE TIME NOW to train your customer- it will save you both a lot of trouble later.

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