2
consideration to windows and doors, both open and
closed, to ventilating systems, both in and out of operation,
and to other factors influencing air movement. Do not
install a detector in the air stream of a room air supply
diffuser. It is better to position a detector closer to an air
return.
The distance that products of combustion or smoke travel
from a fire to the detector is not usually the shortest linear
route. Combustion products or smoke usually rise to the
ceiling, then spread out. Average ceiling heights of 8 to
10 feet do not abnormally affect detector response. High
ceilings, located in churches, warehouses, auditoriums,
etc., do affect detector response and should be
considered.
Special Ceiling Construction Factors
Ceiling obstructions can change the natural movement of
air and combustion products. Depending on the direction
of smoke travel, joists and beams can slow the movement
of heated air and smoke, while pockets between them can
contain a reduced level of smoke.Take obstructions created
by girders, joists, beams, air conditioning ducts, or
architectural design into consideration when determining
area protection. Refer to the Initiating Devices chapter of
NFPA Standard 72 for Location and Spacing requirements
for specific types of construction; e.g. beam, suspended,
level, sloped and peaked ceilings.
DETECTOR PLACEMENT FOR FPT-11
Locate the FPT-11 on the ceiling, at least 4 inches from
the side walls. For an ideal, smooth ceiling condition, place
the detectors at a maximum center spacing of 50 feet
(2500 square feet), 25 feet from side walls or room
partitions. For FM Approved installations this device is
rate compensated and has an RTI rating of QUICK. Use
a maximum center spacing of 20 feet (400 square feet),
10 feet from sidewalls or room partitions.
Actual job conditions and sound engineering judgment
must determine detector spacing. Consider environmental
factors including ambient temperature fluctuation, and the
nature of the fire hazard. Room or area configuration and
ceiling type (sloped or flat, smooth or beamed) also
dictates placement.
Should questions arise regarding detector placement,
follow the drawings provided and/or approved by Siemens
Industry, Inc., or by its authorized distributors. This is
extremely important! The detector placements shown on
these drawings were chosen after a careful evaluation of
the area being protected. Siemens Industry, Inc.'s
extensive experience in design of the system assures the
best detector placement by following these drawings.
TEMPERATURE – HUMIDITY – PRESSURE –
AIR VELOCITY
The operating temperature range for the FP-11 and
FPT-11 detectors is from 32°F (0°C) to 100°F (38°C). The
thermal alarm temperature is rate compensated at 135°F
(57°C). Use these detectors in environments where the
humidity does not exceed 93% (non-condensing). Normal
changes of atmospheric pressure do not affect detector
sensitivity. For FP-11 open area 0-1200 ft/min
applications, use the appropriate application from the
FirePrint ASD application list. Use the ASD duct
application for 300-4000 ft/min applications a) in above-
ceiling and under-floor plenums, b) inside an air duct,
and c) in an air duct housing using sampling tubes. Follow
detector spacing and location requirements in NFPA 72
Chapter 5 for
High Air Movement Areas
and
Control of
Smoke Spread.
When installing Model FP-11 in existing installations with
an existing duct detector housing, order an AD-11UK Air
Duct Upgrade Kit DA-304, P/N 500-695967 and use it in
that installation. This kit includes the required housing
cover, P/N 305-095676. Do not use Model FP-11 with
any other air duct cover.
NOTE
For air duct and open area applications, the FP-11
smoke sensitivity range is indicated on its
nameplate. For application/sensitivity settings,
refer to the MXL/MXLV OPERATION,
INSTALLATION, AND MAINTENANCE MANUAL,
P/N 315-092036, the MXL-IQ OPERATION,
INSTALLATION, AND MAINTENANCE MANUAL,
P/N 315-093624, or the FireFinder-XLS
INSTALLATION, OPERATION AND MAINTENANCE
MANUAL, P/N 315-033744, as applicable.
DETECTOR MOUNTING
To ensure proper installation of the detector head into
the base, be sure the wires are properly dressed at
installations:
1. Position all wires flat against the base.
2. Take up all slack in the outlet box
3. Route wires away from connector terminals.
INSTALLATION / REMOVAL OF DETECTOR HEAD
To Install:
•
Align LED in detector with LED symbol on base and
insert detector into base.
•
Rotate detector counterclockwise while gently pressing
on it until the detector drops fully into base.
•
Then rotate the detector clockwise until it stops and
locks in place. Insert optional locking screw (Order
Model LK-11).
To Remove:
•
Loosen locking screw, if installed. Then rotate the
detector counter clockwise until stop is reached.
•
Pull detector out of base.
PROGRAMMING
Each detector on a loop must be programmed to respond
to a unique system address.
1.
To program the detector address, use: a) Model
FPI-32 Programmer/Tester firmware version 3.0 or
greater (refer to the
FPI-32 OPERATIONS MANUAL,
P/N 315-090077), or b) Model DPU Device
Programming Unit (refer to the DPU Manual, P/N
315-033260).
