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Fitting and Wiring Procedure
To install the control unit:
1.
Remove the front cover by releasing its three retaining screws.
Caution: Mains voltages may be present at the mains terminal
block (see Figure 1).
2.
Connect any optional modules to the PCB.
3.
Slide the back tamper switch mounting plate into the slots shown in
Figure 1.
4.
Route all cables through the cable-entry holes located on the base of the
control unit. All holes used must be fitted with a rubber grommet to
protect against sharp edges. The mains cable must use its own cable-
entry hole.
5.
If required, secure the control unit to a wall using not less than 30mm x
No 10 screws through the three fixing holes shown in Figure 1.
6.
Connect all wiring except to the standby battery (connect during power-
up procedure).
General Wiring Considerations
Cable Type
In general, the control unit requires standard 7/0.2 un-screened alarm cable
for wiring to MSNodes, keypads, LEC2s, MRNodes, MSPSUs and zone
sensors. The number of cores varies, depending on the device being
connected.
Screened cable may prove necessary if the installation site has equipment
that produces high levels of R.F. (Radio Frequencies), e.g. heavy industrial
plant such as welding equipment, etc. If screened cable is required, you
should adhere to the following guidelines:
1.
The screen on the cable should be connected only to mains earth at the
control unit to avoid earth loops.
2.
The continuity of the cable screen is most important and screens MUST
be continuous along the full length of the network.
3.
If the network cable enters any metal enclosure, ensure the screen is
isolated from the case.
2. INSTALLATION
11763087 Issue 1
Page 5
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