Interlogix FlexZone Series, Product Manual

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Chapter 2: Installation
38
FlexZone™ Product Guide
• Install a bypass cable below ground inside conduit.
• Continue installing the cable on the remainder of the fence.
Gate bypass cable
To bypass a gate in a FlexZone zone, run the sensor cable from one side of the
gate to the other, underground inside conduit. Secure the bypass cable at both
sides of the gate. The bypass cable is then specified as non-detecting during the
calibration process (cable set as non-detecting does not report alarms).The gate
can be protected with another technology, such as a microwave system.
Optionally, create a 3 m isolation loop at each end of the software bypassed
cable.
Bypass cable installation instructions
Figure 45: Gate bypass (using microwave protection)
1. Install the sensor cable on the fence leading up to the gate in the usual
manner.
2. Cut a piece of PVC conduit to the required length, and bury the conduit at a
depth of 45 cm.
Note:
Use minimum 2.5 cm diameter conduit and 90º sweeps (not elbows).
3. Pull the sensor cable through the buried conduit.
4. Seal the ends of the conduit.
5. Use cable ties to tightly secure any exposed bypass cable to the fence fabric.
6. Continue installing the sensor cable on the fence beyond the gate.
Installing sensor cable on swinging gates
1. Run sensor cable to the hinged side of the gate.
bypass demarcation points (Zone 0)
inactive cable in PVC conduit
45 cm (18 in.)
4.6 m (15 ft.) min.
4.6 m (15 ft.) min.
min. 15º slope
min. 15º slope