GE Security 700 SERIES Commercial Self-Diagnostic Smoke Detectors Instruction Manual
- June 9, 2024
- GE Security
Table of Contents
GE Security 700 SERIES Commercial Self-Diagnostic Smoke Detectors
Instruction Manual
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, call800-648-7424
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.
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.
700 Series 2-Wire Wiring Diagram
NOTE: Alarm contacts shown in non-alarm mode.
700 Series 4-Wire Wiring Diagram 741UT Head
Figure 1. Wiring diagrams
NOTE: Alarm contacts shown in non-alarm mode
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.
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 anad
ditional 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.
Figure 5. Continuity switch
Figure 6. Installing the detector head
Figure 7. Removing the detector head with the locking tab slot removed
Figure 8. Removing detector cap
Figure 9. Optical chamber
Figure 10. Sensitivity level test
Testing the System
After all connections are completed and the wiring is checked per NFPA 72, apply power to the system. There should not be an alarm. If there is, power down the system and determine whether a unit is latched or if there is a problem with the wiring. If no alarm has occurred, go to the last unit and check the unit power with a volt meter for the specified voltage.
Testing Each Detector
-
Prior to testing, remove the red dust cover. The units will not work
with the dust cover in place. -
Disconnect alarm notification appliances, releasing service devices, and extinguishing systems prior to detector tests.
-
Be sure to reconnect all devices at the conclusion of testing
Smoke Test
The units should be tested in place annually using one of the following methods:
- Use Smoke! in a can® and follow the directions on the can. OR
- Hold a smoldering punk or cotton wick close to the unit and gently direct the smoke into the smoke entry openings for 20 seconds or until an alarm is indicated.
The unit performs a smoke test every 9 seconds while flashing its LED. If smoke is detected, the rate of sampling increases to every 4.5 seconds. Excessive smoke must be detected in three consecutive tests for the alarm to sound. BE SURE TO PROPERLY EXTINGUISH THE SMOKE SOURCE AFTER TESTING!
If it is successful, the LED will remain lit. This is a gross, go/no-go test and is not a reliable indication of unit sensitivity. For in-depth sensitivity testing, see Sensitivity Test. To reset the detector, operate the system reset switch for 2 to 3 seconds to remove power from the detectors. Control unit alarm and all ancillary functions should be verified for a complete test of each detector.
Sensitivity Test
- Hold the magnet near the integral reed switch of the unit for more than one second (see Figure 10). The LED will flash 1 to 9 times.
- Count the number of LED flashes, then use the following table to determine if any action is necessary.
After the sequence of blinks, if the sensitivity is found to be within limits and if all other tests pass, the detector will go into alarm until reset by the panel. If the sensitivity is not within limits, or an unserviceable hardware fault has been detected, the alarm LED will continue to flash once per second until the detector is reset by the panel. If sensitivity test indicates an unacceptable level, take action recommended above. If action does not result in acceptable sensitivity, replace unit.
Maintenance
If a unit drifts beyond its approved sensitivity range for more than 24 hours, or fails internal diagnostic tests, the unit automatically indicates trouble by flashing its LED every second. This meets field sensitivity testing requirements without the need for external meters.
In accordance with NFPA 72, unit sensitivity should be checked within one year of installation and every alternate year thereafter, in commercial installations, or every three years in residential sites.
The unit’s replaceable optical block chamber unsnaps for easy field cleaning and service. Whenever the LED indicates cleaning is necessary, follow these steps:
-
Remove the detector cap (see Figure 8), unsnap and throw away the optical block chamber (see Figure 9).
-
Thoroughly blow off the optical base and snap a new optical block chamber (part #211) into place.
NOTE: Be sure the new optical block chamber is seated all the way down. -
Replace the detector cap and verify sensitivity. See Sensitivity Test
