E&OE NC910F Manual

10 Zone Call Controller (NC910F, NC910S)
10 Zone Expansion Unit (NC910EF, NC910ES)
20 Zone Call Controller (NC920F, NC920S)
20 Zone Expansion Unit (NC920EF, NC920ES)
IMPORTANT NOTES:
This equipment must be installed and maintained by a suitably skilled and technically competent person.
The Call Controller is a piece of Class 2 equipment. However, any metal parts used during installation
(i.e. the metal back box) MUST be earthed.
Button (A)
Button (B)
10 or 20 Zone Call Controller
The 10 and 20 Zone Call Controllers are compatible with all 800 Series call points, ceiling pulls,
infrared ceiling receivers, monitoring points, overdoor lights and remote sounders. Depending
on how the Controller is configured and the devices connected to it, both Standard and
Emergency calls can be indicated at the Controller. Buttons (A) & (B) allow the user to Reset,
Mute or Accept standard calls, as detailed in the OPERATION section below.
OPERATION
STANDARD CALLS: when triggered by a calling device, the Controller's internal buzzer sounds
continuously and the relevant zone indicator(s) illuminate steady.
Pressing the Controller's Reset Button (A), if enabled, cancels all standard calls. Note: In certain
circumstances there is a specific requirement for standard calls to be reset at their point of
origin and in such applications this function should be disabled.
Pressing the Controller's Mute Button (B), if enabled, silences the Controller's internal buzzer.
However, if a new call (standard or emergency) is triggered anywhere on the system, the buzzer
will resound.
Alternatively, instead of muting calls, Button (B) can be configured as a Call Accept Button.
Pressing Call Accept sends a slow pulsing acknowledgement signal to overdoor lights and reset
points c/w sounder, wired as shown in Fig. 3, page 5. Should a new call (standard or emergency)
be triggered anywhere on the system, any zones in the acknowledgement state will revert to
a standard call.
EMERGENCY CALLS: when triggered by a calling device, the Controller's internal buzzer pulses
on and off and the relevant zone indicator(s) flash.
This level of call takes priority over standard calls and cannot be muted, accepted or reset at
the Controller. An emergency call can only be reset at the device from which it was triggered
or via a reset point, wired on the same zone.

INSTALLATION INSTRUCTIONS

10 and 20 Zone Call Controller Instructions • Approved Document No. DNU0920000 Rev 5
Call
Accept
Zone
names &
alarm
indicators
10 or 20 Zone Expansion Unit
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