4: Wiring Specifications; 5: Speaker Wiring - Honeywell SILENT KNIGHT EVS Series Manual

EVS Device Installation
4.5.4 Wiring Specifications
All wiring and devices installed in the system must meet the standards described in National Electrical Code (NFPA 70), NFPA Standard 72,
and Life Safety Code (NFPA 101).
To avoid induced noise (transfer of electrical energy from one wire to another), keep input wiring isolated from high-current output and
power wiring. Avoid pulling one multi-conductor cable for the entire panel.
Separate wiring as follows:
DO NOT pull wires from different groups through the same conduit.
Twisted, shielded wire is recommended for all audio circuits to provide the maximum protection against EMI and AFI emission and suscep-
tibility.
If using shielded cable, attach the shield to earth ground on the control panel.
For the same reasons, wiring within the cabinet should be routed around the perimeter of the cabinet. It should not cross the printed circuit
board where it could induce noise into the sensitive microelectronics or pick up unwanted RF noise from the high speed circuits.
High frequency noise, such as that produced by the inductive reactance of a speaker or bell, can also be reduced by running the wire through
ferrite beads or by wrapping it around a ferrite toroid core. Figure 4.27 provides an example.
4.5.5 Speaker Wiring
Each EVS-125W supplies four NACs (Notification Appliance Circuits) for speaker connection. The speaker circuit can be supervised and
wired Class B or Class A. Speaker circuit 1 is capable of 100 watts of power at 25 Vrms. Speaker circuit 2-4 are capable of 50 watts (each) at
25 Vrms.
30
Maintain 0.25" spacing between
each of these circuit types;
as well as between power-limited
and non power-limited circuits.
AC power
audio
circuits
Figure 4.27 Wire Routing Example for the EVS-125W
Input/Output Type:
Non Power-Limited: AC power, Standby batteries
Power-Limited:
Audio:
SBUS
VBUS
CIRCUIT 5
+ OUT –
EVS-125W EVS-CE4
CIRCUIT 8
+ OUT –
CIRCUIT 4 CIRCUIT 3 CIRCUIT 2 CIRCUIT 1
+ IN – + OUT – + IN – + OUT – + IN – + OUT – + IN – + OUT –
battery
cable
EVS Series Manual — P/N LS10062-001SK-E:D 3/15/2022
Wiring
SBUS, VBUS
Speaker
audio
circuits
Maintain 0.25" spacing
between power-limited and
CIRCUIT 6
+ IN – + OUT – + IN –
non power-limited wiring.
CIRCUIT 7
+ IN – + OUT – + IN –
audio
circuits
Installing the EVS-125W