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ZONESENSE DH4
OPERATORS MANUAL
7.4 Disablement
Condition
Selected functions of the FACP can be temporarily disabled under controlled conditions for such
purposes as testing and maintenance. One or more of the following can be selected and then
disabled;
In order of selection they are;
Zone circuits 1-2, 3-4
Door
holder
output
Fault output (has a dedicated disable indicator)
Fire output (has a dedicated disable indicator)
Alarm
outputs
Disablement and re-enablement of any of the above items is not affected by reset from the fire alarm
condition or the fault condition.
Disablement and re-enablement can only be carried out using the proper procedure at access level
2.
There is a common disablement indicator, which is illuminated when any of the above items have
been disabled and for zone circuits there is a disable indicator which is common with the fault
indicator. Disable has priority over the fault condition and the indicator is steady to indicate the
disablement condition.
For alarm outputs the alarms status indicator is illuminated steady and has priority over the fault
indication.
For the Door holder outputs the door holder status indicator shall be illuminated and has priority over
the fault indication. When the door holder outputs are disabled the outputs remain energised
regardless of a fire condition, evacuate condition or the manual door release control being activated.
If there is a mains fail while the door holder outputs are disabled, then the outputs shall be de-
energised after a suitable de-bounce period and then re-energised once the mains is restored.
