Installation
P/N 06-237058-001 2-13 February 2012
2-4.5 Connecting the Audible PMU Trouble Sounder Harness
The system’s audible buzzer is activated by the Trouble Relay on the PMU board and sounds upon
PMU microprocessor failure and loss of AC power. The Audible PMU Trouble Sounder harness, P/N
06-220341-002, is supplied in the PMU Board hardware kit.
To install the Audible PMU Trouble Sounder harness:
• Insert the correct end of the harness into Trouble Relay J11 on the PMU Board. Leave the other
end dangling until the Main Controller Board is installed.
• Proceed to Section 2-4.6, Making AC Power Source and Earth Ground Connections
2-4.6 Making AC Power Source and Earth Ground Connections
The ARIES NETLink control unit uses commercially- or end-user-provided AC power as the primary
power source, together with 24 Vdc standby batteries (when required by local codes and/or Authority
Having Jurisdiction [AHJ] requirements). The primary AC power for the ARIES NETLink control unit
is shown in Table 2-1.
Note: The default power configuration is 120 Vac and will require resetting for 220/240 Vac
operation. Configuration of primary AC power requires that the AC power-selection switch on
the side of the power supply unit be set correctly before it is installed in the enclosure. Refer
to Figure 2-4 for switch location.
The ARIES NETLink system requires a separate, dedicated connection to an AC branch circuit that
must be labeled “Fire Alarm.” This branch circuit must connect to the line side of the main power
connection for the premises. No other equipment can be powered from the fire-alarm branch circuit.
The branch-circuit wire must run continuously, without any disconnection devices from the source
of AC power to the ARIES NETLink control unit. Over-current protection for this branch circuit must
be limited to 15 Amp maximum and comply with Article 760 of the National Electric Code, in addition
to any other local electrical codes. Use a minimum wire size of #14 AWG with 600-volt insulation for
this branch circuit. Use a grounded power cord of #14 AWG or larger wire with 600 Vac rating to
make the AC power connection to the control unit.
Table 2-1. Primary AC Power Input
1 Power Supply Unit: 2 Power Supply Units:
120 Vac, 50/60 Hz, 3.2 A 120 Vac, 50/60 Hz, 6.4 A
240 Vac, 50/60 Hz, 1.6 A 240 Vac, 50/60 Hz, 3.2 A
WARNING
Ensure that the dedicated AC circuit is shut off at its source before beginning this
procedure.
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