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EACIE Evacuation Alert Control and Indicating Equipment
5.11 Connecting the Standby Batteries
CAUTION: There is a risk of explosion if an incorrect battery type is used. Always dispose of
used batteries in accordance with the battery manufacturers' instructions.
Do not connect the batteries until the installation is complete and the panel is ready to be
tested. One method of isolating battery power is to disconnect the battery link wire.
PHOTOS 1 & 2 SHOWING LOCATION OF BATTERIES AND CONNECTIONS TO THE POWER SUPPLY PCB
Two new, good quality, fully charged 12V, up to 22Ah capacity valve regulated lead acid (VRLA) batteries
are required as the emergency standby power supply for the panel. They should have a battery life of 4 years
and should be clearly labelled with the date of installation. YUASA REC22-12I batteries are recommended.
The batteries should be connected in series and positioned on the shelf at the top of the EACIE chassis. Connect
the 'Red' (+ve) and 'Black' (-ve) battery wires from the battery terminals to connector block CONN7 on the
power supply's PCB. The battery wires (red and black), link wire (green/yellow) and cable ties are supplied in
the accessory pack. Secure the batteries into position using the four cable ties.
The panel's sophisticated battery monitoring unit protects the batteries against deep discharge by activating a
cut off circuit when the standby supply voltage reaches 21V approx. If batteries are not fitted, are discharged
or in poor condition, a PSU fault will show at the panel.
The capacity of the batteries used will depend upon the standby time which must be sufficient to maintain the
operation of the system for a minimum of 72 hours (the standby time of 72 hours is dependent on the system
specification – see BS 8629). To calculate the batteries required for any given standby period see the battery
calculation guide in Appendix 3.
EACIE panel battery calculator tools are available for download on C-TEC's website
assist with system designs.
Figure 10 – Battery Connection Details
Installation and Programming Manual Approved Document No. DFU5030020 Rev 1 Page 18 of 38
CAUTION! Inferior and New Batteries stored over 6 months.
The panel's PSU is an EN 54-4/A2 power supply and as such measures
accurately the internal battery resistance down to a fraction of an ohm.
The fault threshold is a function of EN 54-4 and as such cannot be
changed, otherwise, it would NOT be a certifiable power supply.
Batteries stored for long periods of time before use (especially new
ones!), suffer a progressive degradation of internal resistance the longer
they are kept off charge after manufacture. Contrary to popular opinion
they DO NOT recover this degradation once re-charged. In order for the
battery to recover it MUST be discharged and charged several times
(more than once), each time you will see a reduction in the internal
resistance.
Therefore, if you install one of these batteries AND it shows a fault AND
you just leave it AND expect the fault to go away, it will not! In this
instance it is not the charger at fault, it is the battery.
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