Installation Instructions; General; Initiating Circuits; Zone Wiring - Fire-Lite Alarms MS-4012 Instruction Manual

Fire alarm control panels
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3.1

General

Carefully unpack the system and check for shipping damage. Mount the cabinet in a clean, dry, vibration-free
area in which extreme temperatures are not encountered. The location should be readily accessible with
sufficient room for easy installation and maintenance. Locate the top of the cabinet approximately five feet
above the floor with the hinge mounting on the left. Determine the number of conductors required for the
devices to be employed. Pull required conductors into the box through the knockout provided. All wiring should
be in accordance with the National and/or Local codes for fire alarm systems.
3.2

Initiating Circuits

Zones - Wire all alarm initiating devices sequentially for
proper supervision. Initiating devices include: coded and non-
coded pull stations; heat, photoelectric, and ionization type
detectors; and waterflow alarm devices.
NOTE: To employ coded manual pull stations, inhibit the
latching circuit for a particular zone by removing the associ-
ated diode in the zone circuit on the main board (see Figure
3L).
Observe polarity when connecting polarized devices. Con-
nect first device to the panel, second device to the first device,
third to the second and so on. Remove the End-of-Line
resistor (ELR) from the terminals and install on the terminals
of the last device. Wire the zones to the panel as shown in
Figures 3A and 3B.
Supervisory Circuit (Normally Open) - Zone 4 can be programmed to function as a normally open
supervisory zone. A short across the loop will light the zone alarm and supervisory LEDs, and will activate
an audible trouble device that can not be silenced and will sound until the panel is returned to normal. An open
in the wiring will light zone and system trouble LEDs, and the audible trouble device will sound. In this mode,
the audible device can be silenced. Remove jumper plugs JP5, JP6 and install JP7 and JP8. Connect normally
open contacts to Zone 4 terminals with an ELR across the last device.
10
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3.0 Installation Instructions

15586 Rev E
5/14/93 P/N 15586:E
firealarmresources.com
Supervised Class B Operation
ELR
Smoke Detector
Heat Detector
Manual Station
Smoke Detector
Figure 3A: Zone Wiring

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Ms-4024Cms-4012Cms-4024

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