Ziton ZP3, Installation Operation & Maintenance

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ZP3 Fire Control Panel
System Commissioning
ZP3 Fire Control Panel Manual
UD1160.8 Iss 6 (25/02/2005)
Page 8 - 3
I
8
8.3 System Tests
After confirming that the system has been correctly installed and programmed, certain tests
must be performed to confirm that the equipment is functioning correctly, as listed below.
Panel check
Disconnect the loops from the panel. Jumper the "in and out" terminals of each loop, and
connect 3 sensors (or other line devices) to each loop. Address these devices at any
desired addresses, do not duplicate. Ensure the addresses are zoned. Carry out the
following checks:
i In the maintenance|reports to screen|point analogues menu, check that the first
analogue value (the Reference Value, V1) of each device is within the range 208 - 216
counts. If any of the devices are out of this range, then replace the panel main board.
ii Place one device on each loop into alarm (activate callpoints, or place smoke or test-
smoke into a sensor). Check that the panel reports an alarm, and that the zone is
reported on the LCD display, and by means of the correct illuminated zone and status
LED.
iii Create a fault on one device on each loop (disconnect a callpoint, or unplug a sensor
base). Check that the panel reports a fault, and that the zone is reported on the LCD
display, and by means of the correct illuminated status LED.
Z-loop wiring check
Disconnect the loops from the panel. Using a multimeter, check the resistance of the
complete loop (combined resistance of both the positive [+] and negative [-] legs), as follows.
i If the system is wired as a class-A return loop, then measuring the resistance is a
simple matter. At the panel, measure the resistance of the positive leg from [+out] to
[+in], and record. Multiply by two to get resistance of the total cable and check that
they are within the required parameters below.
ii If the system is wired as a class-B return loop, then measure as follows. If the loop
has Tee-Offs, then identify the longest leg, measured from the panel to the last device.
At the last device connect the positive leg to the negative leg. At the panel, measure
the resistance from the positive leg [+out] to the negative leg [-out], and record.
Z-loop wiring parameters
These must be as specified in the Ziton ZP wiring Guide, publication GA322. (attached as
Appendix W)
As a guideline only: For a loop with sensors, callpoints, and interface units only, the total
loop resistance must not exceed 75 Ohms (ie 37.5 ohms for positive leg and 37.5 ohms for
negative leg), and the maximum cable length must not exceed 3000 metres. For a loop with
loop-powered sounders, this depends upon the number of sounders connected. Assuming
100 sounders, the total loop resistance must not exceed 12-Ohms, and the maximum cable
length must not exceed 1500 metres.