EP203 AUTOMATIC EXTINGUISHER PANEL
Page 14 of 45 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Approved Document No. DFU0002032 Rev 4
A 6k8 end-of-line resistor (supplied in the accessory pack) must be connected across the
terminals of the last device on each circuit to allow the wiring to be line monitored for
open and short circuit faults.
Note : Unused circuits must have a 6k8 resistor fitted at the EP203 panel terminals.
The wiring for each alarm sounder circuit should be connected to the relevant 5mm
connector block on the Main Control PCB (Sound 1A, Sound 1B, Sound 2nd Stage) and
their screens terminated at the EP203 panel’s base earth post. For more specific device
wiring information, refer to the manufacturers’ own instructions.
Monitored Input Wiring
Note : See Appendix 4 (Technical Specification) for the monitored input specification.
Six monitored input connections are available at the EP203 panel:
Manual Release, Flow Switch, Low Pressure, Mode, Hold and Abort.
Figure 6 : Typical Monitored Input Wiring
A 6k8 end-of-line resistor (supplied in the accessory pack) must be connected across the
terminals of each device on each circuit to allow the wiring to be line monitored for
open and short circuit faults.
Note : Unused circuits must have a 6k8 resistor fitted at the EP203 panel terminals.
The wiring for each input should be connected to the relevant 5mm connector block on
the Main Control PCB and their screens terminated at the EP203 panel’s base earth post.
Auxiliary Output Wiring
Note : See Appendix 4 (Technical Specification) for the auxiliary output circuit
specification.
The wiring for each output should be connected to the relevant 5mm connector block on
the Main Control PCB and their screens terminated at the EP203 panel’s base earth
post.
Six auxiliary relays provide volt-free changeover contacts, as detailed below:
•
F i re : Relay operates on activation of a fire condition in a zone, or by pressing
the Silence/Resound Sounder pushbutton. Relay will not operate on activation of
a remote control AL input. The relay remains activated until the panel is reset.
•
L ocal F i re : Relay operates on activation of a fire condition in a zone, or by
pressing Silence/Resound Sounder pushbutton.
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