ADEMCO VISTA-20HWse Troubleshooting Guide download pdf (Page 11)

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Standard Phone Line Connections

The wiring connections shown here are not applicable if the 4285 Phone Module

is used. Refer to the 4285 Phone Module section for information regarding phone

line connections, which are different than those shown here.

Incoming phone line and handset wiring is connected to the main terminal block

(via a RJ31X jack) as follows (also see Figure 4):

Term. 21: Local Handset (TIP – Brown*)

Term. 22: Local Handset (RING – Gray*)

Term. 23: Incoming Phone Line (TIP – Green*)

Term. 24: Incoming Phone Line (RING – Red*)

* Colors of wires in Direct Connect Cord.

TERMINALS

ON CONTROL

EARTH GROUND

INCOMING TELCO LINE

➡

Handset

Incoming

Telco Line

TIP

RING

RJ31X

JACK

PLUG

DIRECT

CONNECT

CORD

➧

TIP

RING

GROUND

▲

▲▲

PREMISES

PHONES

▲

{

BROWN (TIP)

GRAY (RING)

GREEN (TIP)

RED (RING)

26 27 28 29 30

21 22

23 24

IMPORTANT!

IF THE PANEL IS NOT CONNECTED TO A PROPER

EARTH GROUND, YOU MAY GET FALSE TELEPHONE

LINE CUT INDICATIONS (IF THE TELEPHONE LINE

MONITOR HAS BEEN PROGRAMMED IN FIELD 92).

Figure 4. Telephone Line Connections

Wiring The AC Transformer

ÊÊÊÊÊ1321 Wire the 1321 transformer to terminals 1 and 2 on the control board. See wiring

table below for wire gauge to use.

Caution must be taken when wiring the transformer to the control panel to guard

against blowing the fuse inside the transformer (the fuse is non-replaceable).

ÊÊÊÊ4300 If you are going to use a 4300 transformer interface (required if Powerline Carrier

devices are going to be used), connect the 4300 transformer’s terminals as

follows:

a. Terminals 1, 3 (AC), and 2 (Ground) to control board terminals 1, 2, and 25,

respectively (see Figure 5). See table below for wire gauge to use.

WIRING TABLE

Distance of Transformer Wire Gauge

From the Control Panel To Use

Up to 50 feet # 20

50–100 feet # 18

100-250 feet # 16

Wiring to the AC Transformer must not exceed 250 feet using 16 gauge wire. The

voltage reading between terminals 1 and 2 of the control must not fall below

16.5VAC or an "AC LOSS" message will be displayed.

Do not plug the transformer into the AC outlet until you are instructed to do so

later in the manual.

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ADEMCO VISTA-20HWse Troubleshooting Guide Page 11

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