Edwards Signaling ESL 700 User Manual

ESL 700 SERIES

Commercial Self-Diagnostic
Smoke Detectors

Installation Instructions

The ESL 700 Series self-diagnostic detectors provide field-replaceable
optical chambers, and rate-of-rise heat detectors with fast response
algorithms in some models (711UT, 721UT, and 741UT).

Electrical Compatibility

The two-wire units are compatible with a wide range of UL Listed control
panels. For information on detector/control unit compatibility, refer to
ESL’s Compatibility Index. For a copy of the Compatibility Index, call
800-648-7424 or visit the Publication Library at www.ge-security.com.

WARNING !

System may not operate if the detector is not connected
to the control unit initiating device circuit as specified
in the detector or control unit literature.

For optional four-wire operation, compatibility listings with individual
panels are not available from UL, therefore you only need to verify that
the voltage range of the detector equals or exceeds the voltage range of
the control panel power supply, and sufficient current is available to
insure the operation of all detectors.

California State Fire Marshal Approved
MEA (New York City) Approved

Installation

Placement and Spacing

Use the following location guidelines to optimize performance and reduce
the chance of false alarms:

• Locate ceiling-mounted smoke detectors in the center of a room or
hallway at least 4 inches (10cm) from any walls or partitions.

• Locate wall-mounted smoke detectors so the top of the unit is 4 to 12
inches (10 to 30cm) below the ceiling. See Figure 1.

• Locate in a suitable environment as follows:

- Temperature between 32°F (0°C) and 100°F (38°C)

- Humidity between 0 and 95% non-condensing

• Locate away from air conditioners, heating registers, and any other
ventilation source that may interfere with smoke entering the unit.

• Mount units on a firm permanent surface.

• When more than one detector is required, spacing of 30 feet (9.1m)
may be used as a guide on smooth ceilings. Other spacing may be used
depending on ceiling height, high air movement, and other conditions
or response requirements.

• Locate away from kitchens, wood stoves, garages, furnaces, and
bathrooms.

Screw terminal

enlargement detail

NOTE:

Alarm contacts shown

in non-alarm mode.

Screw terminal

enlargement detail

NOTE: Alarm contacts shown
in non-alarm mode.

ESL 700 Series

Fire Alarm

Initiating Circuit

Compatible Listed

Control Unit

Continuity

Switch

First Detector

+

DC

Power

–

Circuit

Fire

Alarm

Initiating

Circuit

2

13

Base 701U

for Head Model 711U

Continuity

Switch

First Detector

700 Series 2-Wire Wiring Diagram

13

Base 702U or 702E
for all Head Models

64

Remote Test
Switch, N.O.

2

Base 702RU, 702RE, 702U, or

702E; for Heads Model 731U

5

Normally Open

Remote LED
Blinks every 9 seconds during normal condition
Blinks once every second during trouble condition
Latches on in alarm
No indication during loss of power

2

13

64

5

Common

700 Series 4-Wire Wiring Diagram 741UT Head

2

13

Base 702U or 702E

(Relay in Head)

64

5

Remote LED
Blinks every 9 seconds during normal condition
Blinks once every second during trouble condition
Latches on in alarm
No indication during loss of power

2

13

Base 702U or 702E

(Relay in Head)

64

5

Last Detector

Figure 1. Wiring diagrams

End-of-Line

Device

Last Detector

Normally Closed

End-of-Line

Device

Power Supervision

Unit (204-12/24V)

Red

Black

Brown
Brown

1

ceiling

4 in. (100mm)

minimum

To lock, break out tab with pliars

acceptable here

top of detector

acceptable here

never here

4 in. (100mm)

minimum

side
wall

12 in.
(300mm)
maximum

Figure 2. Fire sensor placement

Consider the Locking Mechanism BEFORE Installation

Each detector head is equipped with a breakaway locking tab slot to prevent
unauthorized removal of the detector head (see Figure 3). For installations
where unauthorized removal of the detector head is not a concern, the head
can be removed by simply turning counterclockwise.

However, when the head must lock to the base, break away the locking tab
slot with a pair of pliers. Then, to remove the detector head, insert a small
screwdriver into the slot on the side of the base and press in while
simultaneously turning the detector head counterclockwise (see Figure 7).

Installing the Universal Base

The 701U and 702U 6-inch diameter universal mounting bases mount
directly to standard single-gang electrical boxes, 4-inch square, round, or
octagonal boxes, 3.5-inch octagonal boxes, and to WIREMOLD Nos.
5738A or 5739 fixture boxes. The 702E 4-inch diameter universal
mounting bases mount only to 3-inch round electrical boxes. Bases may
also be mounted without electrical boxes if approved by the AHJ or if
codes allow.

The 6-inch diameter bases have two parts; the base itself that mounts to
the electrical box or ceiling, and the base cover that conceals the
mounting screws (see Figure 4). The 6-inch diameter bases are shipped
loosely coupled to the base cover.

1. Mount the base. Align the molded line on the base with the base cover,
and twist clockwise to snap in place. To remove the base cover, simply
twist counter-clockwise to unsnap (see Figure 4).

2. Pull wire through the electrical box, then through the center opening
of the 700 Series universal base. Connect the wire to the appropriate
terminals according to the wiring diagrams (see Figure 1). Each base is
equipped with either three or six clamping type wire terminals and
bifurcated contact springs for contact with detector head circuit pins.
Each wire clamping terminal will accommodate two conductors up to

2.0 mm in diameter (#12 AWG).

3. Dress the wiring neatly and verify that the continuity switch (jumper
wire) is touching both terminal 1 and terminal 2. Securely fasten base
with appropriate hardware (see Figure 5).

CHECK ALL WIRING AND MOUNTING CONNECTIONS.

End-of-Line Supervision for Four-Wire Systems

NFPA 72 requires power wiring in four-wire systems to be supervised. This is
accomplished by installing a power supervision unit for the appropriate
control unit voltage at the end of the detector power circuit. ESL model
204–12/24 V power supervision relay—is recommended for both 12 VDC or
24 VDC operation. See 204–12/24 V installation instructions for more
information.

Figure 3. Removing the locking tab slot

Base cover

Screwdriver slot to
unlock head

Align the molded lines on

Base

the base and cover, then
twist to snap into place.

Figure 4. The 6" diameter mounting base

Testing the Wiring for Continuity

After all universal mounting bases are installed, including the end-of-line
device, check the system wiring for continuity. Verify that the manually
operated continuity switch in each base is in the shorting position —
making contact with terminals 1 and 2 (for use at initial installation
only). Use a screwdriver to reset any unshorted continuity switches (reset
by prying the jumper wire out of the plastic stopper). This establishes
continuity across the alarm initiating circuit at initial installation. The
wiring can now be tested for continuity using an ohmmeter or “megger.”

Installing the Detector Head

Base models 702RE and 702RU have a special plastic protrusion built in to
prevent insertion of the wrong heads. They are designed specifically for use
with only 731U heads, which include auxiliary relay contacts, and are only
required when high voltage (i.e. 120 VAC) is connected to the auxiliary
relay. This prevents the installer from inserting a low voltage detector head
into a base containing damaging high voltages. Standard base models 702E
and 702U can be used with the 731U heads when 120 VAC is not present.

Every 700 Series base includes a continuity switch which shorts terminals
1 and 2 together for easy continuity testing. When a 700 Series head is
inserted, the continuity switch will be snapped back, out of the way, and
will no longer short terminals 1 and 2. The continuity switch can be
snapped back into its original position with a screwdriver, if necessary.

To install a detector head, insert the head and rotate it clockwise until it is
properly aligned and “sets” into the base (see Figure 6). Then rotate it an
additional 15 degrees to lock it in place. This action will automatically
“open” the continuity switch in the base and allow continuity in the
system to be established by the detector heads.

Removing the Detector Head

To remove the detector head turn it counterclockwise. However, if the
locking tab slot has been removed, insert a small screwdriver into the
locking tab slot on the side of the base and press in while simultaneously
turning the detector head counterclockwise (see Figure 7). When a
detector head is removed for cleaning or repair, continuity in the system is
broken. Continuity can be re-established by manually resetting the
continuity switch on the empty base with a screwdriver.

2

ESL 700 Series