Chapter 5: Installation
94 P/N 3101890-EN • REV 006 • ISS 21JUN18
• When the VM-DACT is configured as a two-line dialer module, two incoming lines must be used and
connections must be made to each line.
Installing the VM-DACT module
See the VM-DACT Dual Line Dialer Card Installation Sheet (P/N 3101786-EN) for installation instructions, wiring,
and specifications.
Connecting the VM-DACT to telephone company lines
Notes
• For an NFPA 72 compliant system, the VM-DACT must be connected to loop-start telephone lines. If the site
has ground-start lines, two separate loop-start lines must be installed for the dialer.
• If the installation is for a certified fire alarm system or a burglar alarm system in compliance with NFPA 72, the
telephone company line must be of the called party disconnect type (also called timed-release disconnect).
This feature permits the communication module to seize the line and dial out, even when the telephone
company line is in use.
• For connecting the VM-DACT to a cellular capture module for communication over a digital cellular network,
refer to the VM-DACT Dual Line Dialer Card Installation Sheet (P/N 3101786-EN). For cellular capture
module model-specific programming and wiring requirements, refer to the Cellular Capture Module
Configuration Application Guide (P/N 3102371-EN).
To determine the type of telephone company line:
1. Disconnect the line pair and connect the lines to a test meter.
If the line is equipped for loop-start, the meter should read 48 to 52 VDC between the lines.
If the line is equipped for ground-start, the meter will read 0 VDC between the lines, 48 to 52 VDC between
one line and ground, and 0 VDC between the other line and ground.
To determine whether the telephone line supports called party disconnect:
1. Have someone telephone the premises from the outside.
2. Hang up the telephone that received the call, but have the individual who placed the call remain on the line.
3. After 40 seconds, pick up the called telephone again to determine whether the caller has been disconnected.
Downloading the configuration database
After installing the VM-DACT and configuring its database in the VM-CU, download the database. See
“Downloading a database” on page 51 for download instructions.
Note: For UL listed or FM approved installations, you must configure the VM-DACT as a two-line dialer and both
lines must have supervision (line-cut detection) selected.
Testing the transmission
The VM-CU provides a report that lists all CMS codes that can be transmitted from the VM-DACT. Give this report
to the appropriate CMS.
After the CMS has programmed the central monitoring database, perform transmission tests as required by the
local authority having jurisdiction (AHJ) and CMS.
Note: Transmission failures are latched at the panel. You must reset the panel in order to clear them.
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