P/N PM000117A • Rev. 2 • ISS 09MAY2017
ascom
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© 2017 Ascom, Inc.
NUCL4P-H Passive Light
Installation Sheet
Description
The NUCL4P-H Light module is a four-section light used to
signal call events in a passive system.
The light includes two passive room bus connectors for
primary and secondary passive room buses. The primary
bus connector attaches to a Passive Bus Concentrator
(PBC), which supplies power, input, and output lines to the
light. The primary bus connector controls the light’s first,
second, and third light sections. The light’s secondary bus
connector attaches to a second bus on the PBC. It controls
the module’s first, second, and fourth light sections.
Installation
The passive light mounts to a backbox using a backplate
(included) that supports the device. The backplate has
holes for mounting on EU backboxes. In areas where no
backbox is available, a backplate spacer can be used to
mount the device directly to a flat wall surface. Backplate
spacers are sold separately.
Backplate
To mount the backplate on a backbox:
1. Loosen the screws so that approximately 5mm (.20in.)
extend from the backbox.
2. Pull the cables from the backbox through the backplate
hole.
3. Place the backplate over the backbox with the arrow
facing up so that the heads of the screws can pass through
the key-hole slots.
4. Turn the backplate until its top is level.
5. Tighten the screws until they are snug. Do not over-
tighten.
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