EQUIPMENT: DUO-CEL WRITTEN BY: RKP
PUBLICATION: OM_DUO-CEL_INST CHECKED BY: AJC
ISSUE No. & DATE: 2 13/10/10
PAGE 17 of 30
6.4 Pre-Commissioning Wiring Check
NOTE: This pre-commissioning wiring check
procedure should be followed to test all wiring
prior to specific commissioning of any detection,
alarm and auxiliary circuits.
1. Ensure that no devices are connected to the
detection zones and alarm circuits, but that the
cables are linked through at the device locations
to achieve a continuous circuit.
2. Ensure that the resistance of all cables to earth
and between cores is at least 2M.
Check the following:
i) Positive to earth resistance is 2M or
greater.
ii) Negative to earth resistance is 2M or
greater.
iii) Positive to negative resistance is 2M or
greater.
3. Connect a wire link as the end-of-line device on
each of the zones and alarm circuits. At the
panel end, measure the resistance across the
positive & negative ends of the cables for each
of the circuits; ensuring the value does not
exceed 20 for alarm circuits and 7.2 for
twin-wire zone circuits (detection-only zone
circuits can be up to 20). Remember to
remove the wire links after the tests.
Maintain correct polarity throughout all
circuits. Check and rectify any faults.
4. All sounders, detector heads and call points
should now be connected. Remember to
remove any links fitted to detector bases. Be
very careful to maintain correct polarity at each
device
NOTE: For twin-wire circuits, ensure that
all detector heads are fitted. On power-
up, the panel will determine the zone
quiescent condition and monitor for head
removal below this point, so if a detector
base (or sounder base) is empty it must
be linked through for correct
monitoring.
6.5 Powering up
Prior to powering up, the panel will have been
installed in accordance with the installation
instructions, all cabling will have been fully
installed and tested, glanded into the panel
enclosure but not connected to the panel terminals.
The mains supply should be isolated externally to
the panel.
1. Final battery connections:
a. Connect the blue battery lead across the
red & black battery terminals either side
of the battery clamp.
b. Connect the red battery lead to the
BATTERY POSITIVE spade terminal on
the control board.
c. DO NOT connect the other end of the red
battery lead to the battery at this stage.
2. Once the permit to energise the mains supply
is in place, energise the mains at the external
isolator switch.
The panel should switch on, illuminating the
SUPPLY ON LED and flashing the PSU
FAULT LED. The internal buzzer should
pulse.
3. Connect the red battery lead to the red battery
terminal of the left-most battery.
After a short period (less than 60 seconds) the
internal buzzer should silence and the PSU
FAULT LED should extinguish.
The only indication should be the SUPPLY
ON LED.
This is referred to as the quiescent condition of
the panel.
If any other indications are present, identify
the affected circuit and rectify the fault
(incorrect or missing EOL, EOL wrong
polarity, battery fuse blown, DIL switches
incorrectly set etc).
4. With no panel access key inserted, press the
Test button. The panel should respond by
illuminating all indications and sounding the
buzzer. This will continue for 5 seconds after
the button is released.
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