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Wiring Connections
Page
23
BATT + & -
Factory fitted Sealed Lead Acid battery connections. The GardTec
872
is suitable for
the installation of all the popular sizes of alarm batteries. Suggested sizes would be:-
12V 1.2Ah
Suitable only for the smallest installations.
12V 2.0Ah
Suitable only for small installations.
12V 3.0Ah
Suitable for small to medium size installations.
12V 7.0Ah
Suitable for all installations.
Reference should be made to current policies to determine the actual battery capacity
requirements for your system. As a general rule:-
Calculate the total quiescent current draw of the system including
control panel, RKPs, communicator, detectors and any other
auxiliary equipment then use this in the equation shown:-
Quiescent Current x 8 hours = Minimum Battery Size
(May change with new European Standards)
The actual size of the battery should be made up to the nearest size available.
K/S
Keyswitch input. If required the GardTec
872
may be operated by a keyswitch.
Operation is by applying 12V to this terminal (see Fig. 14). The mode of operation is
dependent on how the keyswitch option is programmed (refer to Programmable
Options Description and also see Remote Reset). Keyswitch will set all areas refer to
Zone Type Keyswitch option for area Keyswitch.
Note:- GardTec
872 zones
may also be programmed for keyswitch setting.
Fig. 14 Keyswitch Connection
Keyswitch
12v K/S
Note:
Keyswitch type may be
Normal (Open/Close)
or Biased (Momentary)
or Locked (keypads
lock when used)
See also Remote Reset
GardTec
872
872.qxd 05/11/2003 15:01 Page 23
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