Analogue Addressable Loop(S) Wiring; Fig.4 - Analogue Addressable Loop Connections - C-TEC CAST ZFP Installation, Maintenance & Operating Manual

CAST ZFP Analogue Addressable Fire Alarm Panel
Important Note: Remember to isolate the panel's mains and battery backup supplies before terminating wiring
at the panel.

5.10 Analogue Addressable Loop(s) Wiring

Two analogue loop connections (Loop1 & Loop2) are available on a Main 2-Loop PCB, as shown in Fig.4
below. One analogue loop connection (Loop1) is available on a Main 1-Loop PCB.
An optional 2-Loop PCB (not available for the 1 loop panel version) provides two additional analogue loop
connections (Loop3 & Loop4), if required (see section 5.8).
The maximum number of addressable detectors and call points per loop is 255 with a maximum of 512
devices per panel. This includes a maximum of 40 sounders per loop, or 30 sounder VADs per loop.
Plug-on 5mm connectors accept up to 2.5mm
The loop's earth screens should be adequately insulated and ONLY terminated at the earth bar in the back box
to ensure earth continuity. Check for loop earth faults and loop crossover faults.
The back box earth bar is provided for terminating earth screens or drains and is NOT the panel's
main earth point. The installer must review the external earth bonding (if required) with respect to
the national, regional or local wiring rules. If the installation requires protective earth bonding, then
this must be applied externally and in conjunction with the type of earth system employed on site.
Fig.4 – Analogue Addressable Loop Connections
Figure 4 key:
A Analogue Loop 1 Cable (fire resistant).
20-way heavy duty brass earth bar.
B DO NOT operate the equipment without
connecting cable screens to this bar.
C Cable Earth Screens.
Installation and Programming Manual  Approved Document No. DFU5030000 Rev 4  Page 16 of 60
2
cable.
Analogue Loop 1 Connector (A+, A-, B+, B-).
D
Plug-on connector type.
Additional Analogue Loop 2 Connector (A+, A-, B+, B-).
E Plug-on connector type. Wiring not shown.
NOT APPLICABLE FOR A 1 LOOP PANEL.
F Main 2-Loop PCB.