5
General
Mounting
Information
Flush-mount annunciators
•
In masonry walls or plasterboard walls, use a RACO 944 as a 5-gang box (2½ inches /
64 mm deep) box or its equivalent.
Surface mount annunciators
•
Use a 2975-9461 box (2½ inches/64 mm deep), red.
Semi-flush-mount annunciators
For mounting to an existing two-gang, four-gang, six-gang, or 4 inch (102mm) square flush
mounted box:
•
Use bracket 2975-9463 (1¾ inch/44.5 mm), red.
General Wiring
Guidelines
•
All wiring must be copper conductors only.
•
Wire lengths in excess of the maximum lengths (see Table 2 through Table 5) are not
permitted.
•
If shielding is used:
- Metallic continuity of the shield must be maintained throughout the entire length of cable.
- The entire length of the cable must have a resistance greater than 1 Megohm to Earth
ground.
- The shield must connect to a SHIELD terminal at each annunciator and must be
terminated only at the main panel.
•
Underground wiring must be free of water.
•
Do not run wires through elevator shafts.
•
Wire runs in plenums must be in conduit unless rated for plenum use.
•
Splicing is permitted provided that:
- All such connections are soldered (rosin-core solder), crimped in metal sleeves, or
encapsulated with an epoxy resin;
- When solder or crimped metal sleeves are used, the junction is insulated with a high-grade
electrical tape as sound as the original insulating jacket;
- The shield’s continuity is maintained throughout the cable’s length.
•
Only system wiring can share the same conduit.
Specific Wiring
Guidelines
•
24 V power wiring must be power limited and communication wiring is supervised and
power limited.
•
The Remote Annunciator cannot be used with wiring that goes outside the building (above or
below ground), unless overvoltage suppression is provided at both ends for both the
communication and the power wiring.
Use model 2081-9044 overvoltage protectors (200mA
or less) for communication and power wiring. There are no restrictions on wire routing,
however, the maximum wire length is 2500 feet (762 meters).
-
For underground wiring:
select the appropriate isolated loop circuit protector. The
circuit wiring must be run in a separate parallel wiring trough, separated from any
commercial power distribution wiring.
-
For overhead wiring:
select the appropriate isolated loop circuit protector. The wiring is
limited to one contiguous property and the total wire length must not exceed 2500 feet
(762 meters). Run the circuit wiring on separate poles, separated from any poles
supporting commercial power distribution wiring. The circuit wiring must be run in
parallel with direct relation to the commercial power distribution. The separation is a
minimum distance (whichever is greater) of 100 feet (30.48 meters), or the maximum span
between any two adjacent poles of either the system’s circuit or the commercial power
distribution circuit.
•
For maximum wire lengths with or without circuit protectors, see Table 2 to Table 5.
•
If the interconnected control unit is not used to provide operating power to the annunciator, a
regulated power-limited, UL-listed 24 V DC power supply for fire protective signaling must
be used.
•
12-18 AWG twisted pair wiring is required for RUI communications.
•
In accordance with NFPA 70, Article 250, a dedicated earth ground connection must be
provided to the back box.
Color Touchscreen LCD Annunciator Installation Instructions,
Continued
Summary of Contents for AutoPulse Z-20
Page 12: ...579 1172AR Rev A...
