Siemens SFPO-11,SFP-11,SFPT-11 Installation Instructions Manual

Installation Instructions
Model SFPO-11 / SFP-11 / SFPT-11

FirePrint Photoelectric Detector / FirePrint Detector /
FirePrint Thermal Detector

These instructions are written in accordance with the instal­lation guidelines of NFPA 72, National Fire Alarm Code, and
CAN/ULC-S524, The Installation of Fire Alarm Systems.

Detector Device Storage

DO NOT install this detection device until all construc­tion is completed.

DO NOT store this detection device where it can be con­taminated by dirt, dust, or humidity.

SFP-11 / SFPO-11 DETECTOR PLACEMENT

Although no specific spacings are set for the detectors used
for a clean air application, use 30 foot center spacing (900 sq ft)
from NFPA Standard 72 and CAN/ULC-S524, if practical, as a
guide or starting point for a detector installation layout. This
spacing, however, is based on ideal conditions–smooth ceil­ing, no air movement, and no physical obstructions. In some
applications, therefore, considerably less area is protected ad­equately by each smoke detector. This is why it is mandatory
to closely follow the installation drawings. In all installations
place the detector on the ceiling, a minimum of 6 inches from
a side wall, or on a wall, 4 to 6 inches from the ceiling.

If you have any questions regarding detector placement, fol­low the drawings provided or approved by Siemens Building
Technologies, 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
that is protected. Such factors as air currents, temperature,
humidity, pressure, and the nature of the fire load were care­fully considered. Especially noted were the room or area con­figuration and the type of ceiling (sloped or flat, smooth or
beamed). Siemens Building Technologies, Inc.’s extensive ex­perience in the design of the system assures the best detec­tor placement by following these drawings. Sound engineer­ing judgment by qualified personnel must be followed.

Figure 1
SFP-11 and SFPT-11

Figure 2
SFPO-11

level of smoke or aerosol for an extended period of time, the
detector is programmed to make the “safe decision” and sig­nal an alarm condition. Because the amplitude and duration
of deceptive phenomena are unbounded, the rule of thumb
is to keep detectors as far as practical from sources that can
produce an unusually large quantity of smoke for about a
minute. This effort during placement of detectors within a
FirePrint Application enhances the ability of FirePrint’s decep­tive phenomena rejection. Avoid close proximity of detectors
to smoke sources such as oil burners, electric heaters, kitch­ens, garages, and areas of high relative humidity where

condensation may occur.

Air Currents

Before a detector can sense a fire, the products of combustion
or smoke must travel from the fire to the detector. This travel
is especially influenced by air currents; therefore, consider air
movement when designing the system. While combustion
products tend to rise, drafts from hallways, air diffusers, fans,
etc., may help or hinder the travel of combustion products to
the detector. When positioning a detector at a particular loca­tion, give 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.

Fire Print Detectors and Nuisance Alarms

The neural network within each Model SFP-11 FirePrint de­tector is optimized to reject the most common nuisance
alarms for its selected FirePrint Application; e.g. Parking Ga­rage or Health Care. If the detector is exposed to an excess

P/N 315-033290C-7

Special Ceiling Construction Factors

Ceiling obstructions 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 re-

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Fire Safety

duced 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.

SFPT-11 DETECTOR PLACEMENT

Locate Model SFPT-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). For FM Approved installations, use maximum center
spacing of 20 feet (400 square feet). Locate detectors 25 feet
from side walls 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 Building
Technologies, 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 Building Technologies, Inc.’s exten­sive experience in design of the system assures the best
detector placement by following these drawings.

OPERATION

LED Indicators

The Model SFPO-11 / SFP-11 / SFPT-11 contains an LED indi­cator capable of flashing either one of three distinct colors:
green, yellow, or red. During each flash interval, the micro­processor-based detector checks the following:

• For smoke in its sensing chamber

• That its smoke sensitivity is within the range indi­cated on the nameplate label

• That its critical smoke sensing electronics are
operating.

Based on the results of these checks, the LED indicator
flashes the following:

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.stimildetarnihtiwsi

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Temperature – Humidity – Pressure – Air Velocity

The operating temperature range for the SFPO-11, SFP-11 and
SFPT-11 detectors is 32°F (0°C) to 100°F (38°C). The thermal
alarm temperature is fixed 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 SFPO-11 and SFP-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 SFPO-11 and SFP-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 SFPO-11 and SFP-11 with
any other air duct cover.

For air duct and open area applications, the
SFPO-11 and SFP-11 smoke sensitivity range is
indicated on its nameplate.

DETECTOR PROGRAMMING

Each detector on a loop must be programmed to respond to
a unique system address.

• To program the detector address, use the Model
SDPU Device Programming Unit. Refer to the SDPU
Manual, P/N 315-033260C.

• Record the loop and device number (system address)
for the detector on the detector label and on the base to
prevent installing the detector in the wrong base. The
optional SDPU label printer can be used for this purpose.

WIRING

Detector bases for Model SFPO-11/SFP-11/SFPT-11 should be
connected as shown in Figure 3.

Detector Mounting

To ensure proper installation of the detector head into the base,
be sure the wires are properly dressed at installation:

• Position all wires flat against the base.

• Take up all slack in the outlet box

• Route wires away from connector terminals.

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Fire Safety

P/N 315-033290C-72