Kidde Fire Systems VEGA LT TM0081 User Manual

Page of 51
TM0081      
Page 14 of 51
 Issue 1.01
3.5.7 Battery 
Installation
To provide an emergency battery back up facility in the event of mains failure for the system, two new fully
charged 12 volt sealed lead acid batteries are required. The batteries should be connected in series using the
battery leads connected to the power supply unit and should be located in the bottom left hand corner of the
control panel enclosure. The enclosure has space for 2x 12 Ah SLA batteries. The capacity of the batteries used
will depend upon the required stand-by time and the system configuration. For battery sizes greater than 12 Ah
these should be installed in a separate enclosure suitable for fire protection equipment using appropriate metal
gland fixings and cables.
Before installing the batteries carry out the following procedures:
!
 
Check the batteries for transit damage.
!
 
Check the battery open circuit terminal voltage.
!
 
Record the installation date.
The +ve of one battery is connected to the red battery lead and the –ve of the second battery is connected to
the black battery lead. The –ve of the first battery is connected to the +ve of the second battery using the battery
link supplied. Refer to Figure 13.
Figure 13: Internal Battery Connections
CAUTION:
Do not connect the batteries to the power supply unit leads at this stage.
The control panel power supply unit has a thermistor, which monitors the temperature of the batteries and
automatically adjusts the charging current accordingly. This should be placed as close as possible to the first
battery.
3.5.8
Network and Repeater Cable Wiring (Optional)
When connecting to optional network and repeater wiring, the outer insulating sheath of the cable must be
removed using a proprietary cable stripper. This will expose a number of cable pairs, which will be individually
wrapped in a protective sheath. This sheath must be folded back over the remaining outer insulating sheath and
the metallic compression gland to ensure that the protective metallic sheath has a permanent bonding to the
enclosure. The compression gland must be secured to the enclosure using a metal locking nut in conjunction
with a metal shake proof washer.