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Detector
wiring
Detector
mounting
Base
mounting
Detector
placement
(Refer to Figure 6,7) Audible base Model ABHW-4BZ should
be interconnected as shown in the Installation/Wiring
Diagrams and wired to the specific system modules and
control panels following the appropriate instructions. For
operation with FireFinder-XLS, FC2005/FC901,
FC2025/FC2050/FV2025/FV2050,
FC922/FC924/FV922/FV924 system, note any limitations on
the number of audible bases permitted on each notification
appliance circuit or 24VDC regulated power supply, depending
on the total cable resistance and load of each circuit. (See
Electronic Ratings section.)
Note: Recommended wire size: 18 AWG min.; 14 AWG max.
Wire larger than 14 AWG can damage the connector.
The detector base comes from the factory prewired. All
signaling and initiating circuits are connected directly to the
back of the ABHW-4BZ audible base using the four position
terminal blocks.
1. Route all wires out from the outlet box.
2. When the alarm LED viewing is critical, position the LED
mark on the base in the intended direction (Refer to Figure
8).
3. Make connections directly to the audible base terminals
located on the back of the base. Refer to the related
Installation/Wiring diagram.
4. After all bases are installed, check loop continuity. For
ABHW-4BZ loop continuity check, refer to the DPU or
SDPU Manual, "Testing a FireFinder-XLS".
5. If loop continuity is acceptable, proceed with detector head
installation.
Even though no specific spacing are allocated to the detectors
used with this base, use 30 foot center spacing (900 sq ft), as
referred to in NFPA Standard 72 National Fire Alarm Code
and CAN/ULC-S524, as a guide or starting point, if practical,
in a detector installation layout. This spacing is based on ideal
conditions—smooth ceiling, no air movement, and no physical
obstructions. In all installations (except in special
circumstances like computer room under floors), locate the
detector on the ceiling, a minimum of 6 inches from a side
4
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