Fixing The Base To The Wall; Typical Detector Circuit Wiring - ADEMCO LST700 Series Insallation & Maintenance Manual

Fixing the base to the wall

Using the five mounting holes provided (see figure 3 below), fix the base securely onto/into the wall.
The mounting holes are suitable for use with No.8-10 or 4-5mm countersunk screws.
Assess the condition and construction of the wall and use a suitable screw fixing.
Any dust or swarf created during the fixing process must be kept out of the fire alarm panel and
great care must be taken not to damage any wiring or components.
Figure 3 : Internal view of the back box with PCBs removed / side view for flush mounting

Typical detector circuit wiring

Depending on the model purchased, two, four or eight detector circuit connections are available
on the fire alarm panel.
Refer to the specification on page 24 for the maximum number of devices that may be fitted to each
circuit. Note that the number of devices affects the standby time of the system, and this should be
taken into consideration when selecting the standy battery. See page 23 for more information.
Figure 4 : Typical detector circuit wring
PANEL
DETECTOR
CIRCUIT
TERMINALS
An end of line capacitor (provided in the panel's accessory pack) must be connected across the
terminals of the last device on each circuit to allow the wiring to be monitored.
Manual call points with integral resistors must be used to prevent a short circuit fault occurring
instead of a fire condition when activated.
For more specific device wiring information, please refer to the manufacturers' own instructions.
The wiring for each detector circuit should be connected to the relevant 5mm connector block on
the Main Control PCB and their screens terminated at the panel's base earth post (see pages 10
and 11 for detailed second fix connection information).
LST700 SERIES INSTALLATION & MAINTENANCE MANUAL • Approved Document No. DFU7002012 Rev 4
367mm
MANUAL
CALL
POINT DETECTOR
+
–
LST700 SERIES FIRE ALARM PANEL
Ensure no
fixing devices
are located
underneath the
Power Supply
PCB to avoid
compromising
electrical
safety
MANUAL
SMOKE
OR HEAT CALL
POINT
✗
DO NOT SPUR
(wiring not
monitored)
75mm
includes 'dimples'
WALL
SMOKE
OR HEAT
DETECTOR
END OF LINE
CAPACITOR
7