Siemens PE-11C, PE-11T, PE-11 Installation Instructions Manual

These instructions are written in accordance with
the installation guidelines of NFPA No. 72, National
Fire Alarm Code, and CAN/ULC-S524, The
Installation of Fire Alarm Systems.

DETECTOR PLACEMENT

For a clear air, 0 to 4000 ft/min velocity applica­tion, use 30 foot center spacing (900 sq ft) from
NFPA Standard 72 Chapter 5 and CAN/ULC-S524
as a 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, considerably
less area is protected adequately by each smoke
detector. In all installations, place the detector on
the ceiling, a minimum of 6 inches from a side wall,
or on a wall, 6 inches from the ceiling.

Follow the drawings provided or approved by
Siemens Building Technologies, Inc. or by its
authorized distributors.

See NFPA 72, National Fire
Alarm Code, Chapter 5 for additional guidance on
special issues such as beamed construction and high
stockpiling.

TO AVOID NUISANCE ALARMS:

DO NOT locate the PE-11C/PE-11T detector where
excessive smoke concentrations exist under
normal conditions, or in areas of prolonged high
relative humidity where condensation occurs.

DO NOT locate the PE-11C/PE-11T detector next
to an oil burner, kitchen, or garage where exhaust
fumes can trigger an alarm. Other causes of false
alarms are dust accumulation, heavy
concentrations of steam, heavy pipe or cigar
smoke, and certain aerosol sprays.

AIR CURRENTS

Before a detector can sense a fire, the products of
combustion or smoke must travel from the fire to the
detector. Since their travel is especially influenced
by air currents, consider the movement of air in the
design of the system.

Installation/Wiring Instructions
Models PE-11C/PE-11T

Siemens Building Technologies

Fire Safety

P/N 315-095626-6

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, and to influencing air movement. Never
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.

SPECIFICATIONS

Environmental

Temperature: 320F (00C) to 1000F (380C).
Humidity: Up to 93% RH, non condensing
Air Pressure: No effect.
Thermal Alarm Temp.: 1350F (570C)

Electrical

Voltage: 16-27 VDC
Ripple: 3V peak-to-peak
Supervisory Current: 110µA max
Alarm Current: 33-50mA
Start-up Time: 50 seconds max

DETECTOR WIRING

The PE-11C/PE-11T should be connected as shown
in Figure 1 using the separate mounting base, Model
DB-11. Follow the control panel wiring connection
drawing installed on the inside face of each control
panel cover. See DB-11 instruction, P/N 315-094193,
for base mounting.

Duplicate wiring information is also
in the Installation, Operation, and Maintenance Manual
provided

with every control panel. Note any

limitations on t

he number of detectors and
restrictions on the use of remote devices
permitted for each circuit.

INSTALLATION / REMOVAL OF DETECTOR

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.

2

• 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.

LED INDICATOR OPERATION

The PE-11C/PE-11T contains an LED indicator
capable of flashing either one of three distinct
colors: green, yellow, or red. Every seven
seconds, 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 as follows:

Flash
Color

Condition

Flash

Interval

(Seconds)

Green

Normal supervisory operation.
Smoke sensitivity is within rated
limits.

7

Yellow

Detector requires service
(cleaning or repair) or is
operating beyond its
environmental specifications.

7-30

Red Alarm 2½

No
Flashes

Detector is not powered, or
requires repair.

-

TESTING AND MAINTENANCE

To assure proper operation of the detector and
control panel, it is required that both the Sensitivity
test and the Functional test be conducted.

SENSITIVITY TEST

The PE-1C1/PE-11T monitors its smoke sensitivity
automatically and requires no test equipment. A
green flash of the detector LED about every seven
seconds indicates that the smoke sensitivity is
within its listed limits.

FUNCTIONAL TEST

To test the detector and control panel for functional
operation, use SIEMENS Test Gas, P/N 315-

282747. Follow the instructions on the gas
canister label.

CLEANING PROCEDURE

(See Figure 2)

1. Notify the proper personnel that the fire alarm
system is being serviced.

2. Remove the detector to be cleaned from its
base. (See removal section.)

3. Using a small blade screwdriver, remove the
cover from the rest of the detector by releasing
the 2 cover tabs located on the outside of the
cover. Separate the foam screen from the
cover.

4. PE-11C: Remove the labyrinth from the
sensing chamber by squeezing the labyrinth
sides along the release axis and pulling out.

PE-11T: Carefully remove the labyrinth/
thermal holder assembly being sure not to
damage or disconnect the thermal wires.

Figure 1 Installation And Wiring Diagram for PE-11C/PE-11T Conventional Detector

CAUTION:

1. Do not use looped wire under base
terminal 5. Break wire run to provide
supervision of connection.

2. When a remote relay is used to
control a critical system function, the
relay and its associated detector and
optional module(s) must be the ONLY
devices on the initiating circuit.