Kidde VM-1 Technical Reference Manual

Chapter 5: Installation
90 P/N 3101890-EN • REV 006 • ISS 21JUN18
Circuit type
Test
Addressable analog circuits
1. Verify the continuity of each conductor. Each conductor should
measure less than 50 Ω.
2. Measure the resistance between conductors. The circuit resistance
between conductors should be infinite if no devices are connected to
the circuit.
3.
Measure the resistance between each conductor and earth ground. The
circuit resistance between a conductors and earth ground should be
infinite.
Traditional initiating device circuits
1. Verify the continuity of each conductor.
2. Measure the resistance between conductors. The circuit resistance
between conductors should be infinite if no devices are connected to
the circuit. The circuit resistance between conductors should be
approximately 4.7 kΩ when devices are installed.
3.
Measure the resistance between each conductor and earth ground. The
circuit resistance between a conductors and earth ground should be
infinite.
RS
-485 communication circuits The VM-1 system uses RS-485 circuits for the network data riser and
network audio riser.
1. Verify the continuity of each conductor. Each conductor should
measure between 0 and 50 Ω.
2. Measure the resistance between conductors. The circuit resistance
between conductors should be infinite if no devices are connected to
the circuit. The circuit resistance between conductors should be
approximately 50 Ω when devices are installed.
3. Measure the
resistance between each conductor and earth ground. The
circuit resistance between a conductors and earth ground should be
infinite.
RS
-232 Communication Circuits With both ends of the circuit disconnected:
1. Verify the continuity of each conductor. Each conductor should
measure between 0 and 25 Ω.
2. Measure the resistance between conductors. The circuit resistance
between conductors should be infinite.
3.
Measure the resistance between each conductor and earth ground. The
circuit resistance between a conductors and earth ground should be
infinite.
Earth Ground
Measure the resistance between the earth ground terminal and a
convenient water pipe or electrical conduit. The circuit resistance should be
less than 0.1 Ω.
VM-DACT Dual Line Dialer Card
The VM-DACT Dual Line Dialer Card is a hardware layer option card that connects the VM-1 system to a public
switched telephone network or cellular network when used with a compatible cellular capture module. The module
has two 8-position modular jacks for connecting two loop-start lines.

Kidde VM-1 Specifications

General

Brand	Kidde
Model	VM-1
Category	Fire Alarms
Language	English