ADEMCO Vista-20HW Troubleshooting Guide download pdf (Page 15)

b. Wire the other three terminals (Sync, Data, Corn) on the 43oO

transformer. Wires from these terminals must be connected to a 9-pin

connector on the control board (using a 4142TR cable supplied with the

4300 transformer), as shown in Figure 4. These particular wires can be

24 gauge or larger, and can be run along with the AC and ground wires

to the control panel.

The complete wiring for the 4300 transformer is also covered in Section 7.

RELAY OUTPUTS & POWERLINE CARRIER DEVICES.

Earth

TERMINALSON

CONTROL

Ill

UNLESS4146 Kl%tiCH AND/OR

ARMINGSTATUSINDICATORIS ALSO

USED.SEEFIG.19.

BOARD

NOTEALLUNUSEDWIRESSHOULD

BECUTAND/ORTAPED.

Figure 4. Connections of 4300 Transformer To The Control Board

1. Place the 12-volt back-up battery in the control cabinet.

2. Attach Red and Black wires on the battery connector cable as follows:

a. Red to the positive (+) battery terminal on the control board (see

Summary of Connections Diagram for location, if necessary).

b. Black to the negative (-) battery terminal on the control board.

Earth Ground Connection

The designated earth ground terminal (25), must be terminated in a good

earth ground for the lightning transient protective devices in this product to

be effective. The following are examples of good earth grounds available at

most installations:

Metal Cold Water Pipe: Use a non-corrosive metal strap (copper is

recommended) firmly secured to the pipe to which the ground lead is

electrically connected and secured.

AC Power Outlet Ground. Available from 3-prong, 120VAC, power outlets

only. To test the integrity of the ground terminal, use a three-wire circuit

tester with neon lamp indicators, such as the UL-Listed Ideal Model 61–035,

or equivalent, available at most electrical supply stores.

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ADEMCO Vista-20HW Troubleshooting Guide Page 15