Fire-Lite MS-4E Fire Alarm Control Panel - Manual (Page 19)

MS-2 & MS-4 Series Manual — P/N 51512:G2 10/18/2011 19
Operating Power Installation
2.2 Operating Power
Primary Power Source (AC) and Earth Ground Connections
AC power connections are made inside the control panel cabinet. The primary power source for the
panel is 120 VAC, 50/60 Hz, 2.3 amps for the MS-2/MS-4 or 240 VAC, 50 HZ, 1.15 amps for the
MS-2E/MS-4E. Run a pair of wires (with ground conductor) from the protected premises main
breaker box to TB8 of the main circuit board. As per the National Electrical Code, use 14 AWG
(2.00 mm
2 , 1.6 mm O.D.) or heavier gauge wire with 600V insulation. No other equipment may be
connected to this circuit. In addition, this circuit must be provided with overcurrent protection and
may not contain any power disconnect devices. A separate Earth Ground connection must be made
to ensure proper panel operation and lightning and transient protection. Connect the Earth Ground
wire [minimum 14 AWG (2.00 mm
2 )] to the transformer mounting stud. Do not use conduit for the
Earth Ground connection since this does not provide reliable protection.
Secondary Power Source (Batteries)
Observe polarity when connecting the battery. Connect the battery cable to J8 on the main circuit
board using the plug-in connector and cable provided. The battery charger is current-limited and
capable of charging sealed lead acid batteries. The charger shuts off when the system is in alarm.
!
WARNING: DISCONNECT POWER
SEVERAL DIFFERENT SOURCES OF POWER CAN BE CONNECTED TO THIS PANEL.
DISCONNECT ALL SOURCES OF POWER BEFORE SERVICING. THE PANEL AND
ASSOCIATED EQUIPMENT MAY BE DAMAGED BY REMOVING AND/OR INSERTING CARDS,
MODULES OR INTERCONNECTING CABLES WHILE THIS UNIT IS ENERGIZED.
!
WARNING: BATTERIES CONTAIN SULFURIC ACID
BATTERY CONTAINS SULFURIC ACID WHICH CAN CAUSE SEVERE BURNS TO THE SKIN
AND EYES AND CAN DESTROY FABRICS. IF CONTACT IS MADE WITH SULFURIC ACID,
IMMEDIATELY FLUSH THE SKIN OR EYES WITH WATER FOR 15 MINUTES AND SEEK
IMMEDIATE MEDICAL ATTENTION.
Figure 2.3 Operating Power Connections
Optional second transformer
shown installed
Standard transformer
Earth ground wire shown
connected to transformer
mounting stud
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