P/N PM000223A • Rev. 1 • ISS 9 August 2017 9
Installation Manual
NU-Series Hardware
System Cabling
Warning: The system manager, corridor display, and administration PC do not comply with
the ANSI/UL 1069 standard for Hospital Signaling and Nurse Call equipment and are not
considered to be part of a listed system configuration.
2.2 Cable Connections
2.2.1 Cable Guidelines
Installers must be fully knowledgeable of the electrical code requirements for their
jurisdiction. All cables and wires used in this application must be fully compliant with
jurisdiction codes. Be sure to use the correct cables in non-plenum ceilings and inside,
behind or through walls, cable trays, wire channels and raceways, or environments where
open building wire is sanctioned. Also, be sure to use plenum-rated cable in air handling
plenum areas.
Label all cable and wire terminations at each cable end for easy identification when
connecting to system devices. We recommended that you use two different colors of
Cat 5/5e/6/7 cable, one for hallway networks and another for room networks.
2.2.2 Hallway Network Power Cable
The hallway network power cable is a wire pair that runs power from the Gateway II to the
hallway devices, which contains dome lights and NUPBCs. The Gateway II provides 36VDC
power for the hallway bus. See Table 1 to determine the maximum allowable distance
between the Gateway II and the farthest dome light in the system for various wire gauges.
Table 1 Maximum distances for hallway bus cables
2.2.3 Room Bus Cables
The modules on the room bus are connected using Cat5/5e/6/7 cables.
Table 2 Maximum distances for room bus cables
EU (mm2) AWG Maximum Distance
1,31
16 (26/30) 300m (1000ft.)
0,823
18 (16/30) 190m (620ft.)
0,518
20 (10/30) 120m (390ft.)
0,205
24 (7/32) 50m (172ft.)
Room Bus Type Maximum Cable Length
Active 30m (100ft.)
Passive (5.5VDC) 50m (165ft.)
Passive (24VDC) 300m (1000ft.)
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