2024年7月20日发(作者：愚初蓝)
ESL 700 Series Conventional Smoke and Heat
Detector Installation Sheet
Number
702E-
10PKG
702U
702RE
702RU
TS7-4
Description
Six-terminal base for all heads; 4 in. (10 cm)
Six-terminal base for all heads, 6 in. (15 cm)
Six-terminal base for 731U, 4 in. (10 cm)
Six-terminal base for 731U, 6 in. (15 cm)
Four-wire photoelectric smoke detector with alarm relay
(NO) output and remote alarm/trouble LED output
Head with base (sold together)
[1] UL Listed for releasing devices such as electromagnetic door
holders, fire dampers, or smoke dampers.
High voltage (120 V) base and head
The 702RE and 702RU bases have a special plastic protrusion
built in to prevent insertion of a low-voltage detector head into
a base containing damaging high voltages (120 V). These
bases can only be used with 731U heads. The 731U includes
auxiliary relay contacts and is only required when connecting
high voltage to the auxiliary relay.
Note: The 731U heads can also be used with 702E and 702U
bases for low voltage applications.
Table 2: Accessories
Number
204-12/24V
211-10PKG
706U1A [1]
706U2A [1][2]
706U3A [1][2]
Description
End-of-line, power supervision relay for four-wire
applications
Replaceable optical chamber for ESL smoke
detectors (set of 10)
Remote indicator with red alarm LED, for use with
721U and 741UT
Remote indicator with red alarm LED and keyed
remote test, for use with 721U and 721UT
Remote indicator with red alarm LED, keyed
remote test and reset, for use with 721U and
741UT
Smoke! In A Can (canned smoke) for functional
testing of smoke detectors
Extension tube for Smoke! In A Can
Description
The ESL 700 Series smoke or smoke with rate-of-rise heat
detectors have field-replaceable optical chambers. The
detector uses an optical sensing chamber to detect smoke and
a fixed-temperature heat sensor to detect heat from fire. For a
list of model numbers, see Table 1. For a list of accessories,
see Table 2.
Table 1: Model numbers
Number
711U
713-5U
721U
721UT
731U [1]
741U
741UT
Description
Two-wire photoelectric smoke detector head
Two-wire rate-of-rise and 57°C (135°F) fixed
temperature heat detector head
Two-wire photoelectric smoke detector, with remote test
input and remote alarm/trouble LED output
Two-wire photoelectric, with rate-of-rise heat detector
head with remote test, alarm/trouble LED output
Two-wire photoelectric smoke detector head with
auxiliary relay (NC/NO) output
Four-wire photoelectric smoke detector with alarm relay
(NO) output and remote alarm/trouble LED output
Four-wire photoelectric smoke and rate-of-rise heat
detector head, alarm relay (NO) output and remote
alarm/trouble LED output
(OEM only, not for resale) see 731U description
Three-terminal base for 711U and 713-5U heads, 6 in.
(15 cm) base, connectors
Head (sold separately from base)
SM-200
SM-EXT1
731L
701U
Base (sold separately from head)
[1] The remote alarm/trouble LED on the 706U1A, 706U2A, and
706U3A models works with both two-wire 721U/721UT and four-wire
741U/741UT models when connected as shown in Figure 6 item 7 and
Figure 7 item 11.
[2] 706U2A and 706U3A only work with the 721U/721UT two-wire
models, when connected as shown in Figure 6 item 6.
© 2014 UTC Fire & Security Americas Corporation, Inc. 1 / 6 P/N 13083-EN • REV J • ISS 10APR14
Installation
Notes
• Locate detectors in an operating environment as defined
in “Specifications” on page 6.
• Mount detectors on a firm, permanent surface.
Placement and spacing
Use the following location guidelines to optimize performance
and reduce the chance of false alarms.
Smoke detectors:
• Locate wall-mounted smoke detectors so the top of the
detector is no lower than 12 in. (30 cm) below the ceiling.
See Figure 1.
• As a guide, space smoke detectors on smooth ceilings
30 ft. (9.1 m) apart. When determining other spacing,
consider ceiling height, high air movement, and other
conditions or response requirements. Refer to NPFA 72.
• Locate detectors away from air conditioners, heating
registers, and any other ventilation source that may
interfere with smoke entering the unit; also away from
kitchens, wood stoves, garages, furnaces, and bathrooms.
Heat detectors:
• Do not install heat detectors in areas with an ambient
temperature above 100°F (38°C).
• Mount heat detectors on the ceiling no closer than 4 in.
from the sidewall. On the wall, mount them between 4 and
12 in. from the ceiling.
• When determining detector placement, consider ceiling
height, construction, and ventilation as these affect a
detector’s performance. Refer to NPFA 72.
Installing the base
Select a compatible electrical box for the base. See
“Specifications” on page 6 for a list of compatible electrical
boxes.
The 6-inch diameter bases have three parts; the base itself
that mounts on the electrical box or ceiling, a foam gasket, and
the base cover that conceals the mounting screws (see
Table 1 for model numbers and descriptions). The 6-inch
diameter bases are shipped loosely coupled to the base cover.
2 / 6
Figure 1: Smoke detector placement
(1)
(5)
(2)
(3)
(4)
(1) Smooth ceiling (3) Wall
(2) Gray indicates the (4) Floor
acceptable mounting area (5) 12 in. (300 mm) max.
Figure 2: The six-inch diameter mounting base
(1)
(2)
(3)
(4)
(1) Base cover (3) Gasket
(2) Screwdriver slot to unlock (4) Base
the head
P/N 13083-EN • REV J • ISS 10APR14
To install the base:
1. Remove the base cover by simply twisting it counter-
clockwise to unsnap (see Figure 2).
2. Pull the field wires through the electrical box, and then
through the center opening of the base. Connect the wires
to the appropriate terminals according to the wiring
diagrams (see Figure 6 or Figure 7).
3. Dress the wiring neatly, and then verify that the continuity
switch (jumper wire) is touching both terminal 1 and
terminal 2 (see Figure 8). Securely fasten the base with
the appropriate hardware.
4. Check all wiring and mounting connections.
5. Install the gasket. Align the molded line on the base with
the base cover, and then twist clockwise to snap in place.
Consider the locking mechanism before installation
Each detector head is equipped with a breakaway locking tab
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 removes by simply
turning counterclockwise.
However, when the head must lock to the base, break away
the locking tab with a pair of pliers. Then, to remove the
detector head, insert a small screwdriver into the slot on the
side of the base, pressing in while simultaneously turning the
detector head counterclockwise (see Figure 5).
Figure 3: Removing the locking tab slot
(1)
(1) To lock, break out this tab with pliers
Installing the detector head
To install a detector head, insert the head and rotate it
clockwise to properly align and seat it into the base (see
Figure 4). Then rotate it an additional 15 degrees to lock it in
place. This action automatically opens the continuity switch in
the base and establishes continuity in the system.
Figure 4: Installing the detector head
(1)
(2)
(1) Head (2) Base
P/N 13083-EN • REV J • ISS 10APR14
Removing the detector head
To remove the detector head, turn it counterclockwise. If the
locking tab was removed, insert a small screwdriver into the
locking tab slot on the side of the base, and then press in while
simultaneously turning the detector head counterclockwise
(see Figure 5).
Figure 5: Removing the detector head with the locking tab
removed
Wiring
Caution: Risk of system failure. The 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 two-wire installation, see Figure 6.
For four-wire installation, see Figure 7.
For optional four-wire operation, verify that the voltage range of
the control panel power supply is within the detector voltage
range, and that sufficient current is available to ensure the
operation of all detectors.
End-of-line supervision for four-wire systems
NFPA 72 requires supervision of power wiring in four-wire
systems. To accomplish this, install a power supervision unit
for the appropriate control unit voltage at the end of the
detector power circuit. See Figure 7.
The model 204-12/24V power supervision relay
accommodates both 12 VDC and 24 VDC operation. See the
204-12/24 V installation sheet for more information.
3 / 6
Figure 6: 700 series two-wire wiring diagram
(1)
IDC_IN
IDC_IN
(5)
(8)
2
701U
2
(9)
2
(10)
1
(3)
3
13
13
702U, 702E
5
702RU, 702RE,
702U, or 702E
6
5
4
64
NOCNC
(6)
(7)
Figure 7: 700 series four-wire wiring diagram (741UT head)
(2)
PWR_IN
PWR_IN
(3)
1
2
3
1
2
3
702U, 702E
6
5
4
702U, 702E
6
5
4
(4)
RD
BK
BN
BN
(5)
(1)
IDC_IN
IDC_IN
(11)
(7) Remote LED P/Ns 706U1A, 706U2A ,or 706U3A (for 721U or
721UT detector only)
(8) Base for 711 series and 713-5U detectors
(9) Base for 721UT detector only
(10) Base for 731U series detectors
(11) Remote LED P/Ns 706U1A, 706U2A, or 706U3A (for 741U or
741UT detectors only)
(1)
(2)
(3)
(4)
(5)
(6)
Initiating device circuit from a compatible listed control panel
DC power circuit
Continuity switch
Power supervision relay (P/N 204-12/24V)
End-of-line device
Remote test switch P/N 706U2A (for 721U and 721UT detectors
only in this two-wire application)
Note: Alarm contacts are shown in the normal state.
Testing
•
•
Prior to testing, remove the red dust cover. The units do
not work with the dust cover in place.
Follow the control panel’s recommended test procedure.
To limit inconvenience to building occupants during testing
it may be necessary to disable or disconnect the alarm
notification appliances, HVAC shutdown, elevator control,
releasing service devices, and extinguishing systems prior
to detector tests. If these or other functions controlled by
the fire system are disconnected during testing, be sure to
perform other tests to confirm that these functions will
operate during an actual event.
Be sure to enable or reconnect all devices at the
conclusion of testing.
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). See
Figure 8. 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.”
•
4 / 6 P/N 13083-EN • REV J • ISS 10APR14
Figure 8: Continuity switch
(1)
(1) Continuity switch
Testing the system
After completing all the connections and checking the wiring
per NFPA 72, apply power to the system. There should be no
alarm. If there is an alarm, check each detector to see if the
alarm LED is active. Reset the control panel and see if the
alarm clears. If the alarm does not clear after the panel is
reset, power down the system and determine if there is a
problem with the wiring. If there is no alarm, go to the last unit
and use a voltmeter to check the unit power for the specified
voltage.
Testing the smoke detector
Test the units in place annually, using Smoke! In A Can and
following the directions on the can.
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. The smoke detector must detect excessive
smoke in three consecutive tests for the alarm to sound.
If the test is successful (alarm sounds), the LED stays on. This
is a gross, go/no-go test and is not a reliable indication of unit
sensitivity. For in-depth sensitivity testing, see “Performing a
sensitivity test on a smoke detector” below.
To reset the detector, follow the control panel’s reset
procedure. Resetting the control panel will remove power from
the detector and allow it to reset. For a complete test of each
detector, verify the control unit alarm and all ancillary functions.
Performing a sensitivity test on a smoke detector
1. Hold a test magnet near the raised TEST letters on the
detector for more than one second (see Figure 9).
The LED flashes 1 to 9 times.
2. Count the number of LED flashes, and then use Table 3 to
determine the required action.
P/N 13083-EN • REV J • ISS 10APR14
Table 3: Description of LED flashes
0 to 1 Indication: Unserviceable hardware fault.
Action: Reset and rerun the sensitivity test. If the error
persists, replace the unit.
2 to 3 Indication: Unit is becoming insensitive.
Action: Clean and reset the unit. Rerun the sensitivity test. If
the error persists, replace the unit.
4 to 7 Indication: Unit is within normal sensitivity range.
Action: None
8 to 9 Indication: Unit is becoming too sensitive.
Action: Verify that the optical chamber is snapped down
securely. If the chamber is correctly installed, clean the unit
and replace the optical chamber.
After the sequence of flashes, if the detector finds the
sensitivity to be within limits and if all other tests pass, the
detector goes into alarm until reset by the panel. If the
sensitivity is not within limits, or an unserviceable hardware
fault is detected, the alarm LED continues to flash once per
second until the detector is reset by the panel. If the sensitivity
test indicates an unacceptable level, take the action
recommended in Table 3. If this action does not result in
acceptable sensitivity, replace the unit.
Figure 9: Smoke detector sensitivity level test
(1)
(1) Test magnet
Remote LED
Models 721U/721UT and 741U/741UT have connections for an
optional remote LED. The remote LED flashes every 9
seconds for a normal state, flashes once every second for a
trouble state, and turns on steady in alarm. It does not indicate
during loss of power.
Testing the heat detector
The 713-5U heat detector samples for heat continuously. The
photoelectric smoke/heat detectors sample for heat every three
seconds.
To test the heat detector:
1. Aim a hot air gun at the detector from 6 to 10 in. (15 to
25 cm) away, taking care not to melt the plastic.
The detector should go into alarm in less than 30 seconds.
5 / 6
Maintenance
If a smoke detector drifts beyond its approved sensitivity range
for more than 24 hours, or fails internal diagnostic tests during
power-up, the unit automatically indicates trouble by flashing
its LED every second. Under normal conditions, the LED
flashes every nine seconds. Therefore, a visual check of the
LED status meets NFPA 72 field sensitivity testing
requirements.
In accordance with NFPA 72, visually check the LED flashes
for unit sensitivity within one year of installation and every
alternate year thereafter for commercial installations, or every
three years for residential sites.
Cleaning the smoke detector
The smoke detectors have an optical chamber that unsnaps for
easy field cleaning and service. Whenever the LED indicates
that cleaning is necessary, follow the steps given below.
To clean the smoke detector:
1. Remove the detector cap (see Figure 10), and then
unsnap and throw away the optical chamber.
2. Use compressed air to thoroughly clean the optical base,
and then snap a new optical chamber into place.
Note: Be sure the new optical chamber is seated all the
way down.
3. Replace the detector cap and verify sensitivity. See
“Performing a sensitivity test on a smoke detector” on
page 5.
Figure 10: Optical chamber
(1)
(2)
(1) Detector cap (2) Field-replaceable optical chamber
Specifications
Voltage 8.5 to 33 VDC, not polarity sensitive
Maximum ripple 10% (Vp-p)
Typical average
711U, 713-5U: 70 μA
standby current (24 V)
721U, 721UT, 731L, 731U, 741U, 741UT:
100 µA
6 / 6
Typical alarm current Two-wire: 60 mA (max.), if not limited by
control panel
Four-wire: 50 mA (max.) but 15 mA (min.)
Remote LED output
5.0 to 8.5 mA
current
Relay contacts 2 A at 30 VDC, 1 A at 120 VAC
RFI immunity 20 V/m minimum, 0 to 1,000 MHz
Heat detector
Fixed temperature: 135° ±3°F (57° ±1.7°C)
specifications [1]
Rate of rise: 15°F/min and > 105°F
(8.3°C/min and > 40.6°C)
Heat detector spacing 721UT, 741UT: 50 ft.
713-5U: 70 ft.
Sensitivity 1.55 to 3.22%/ft. obscuration
Drift compensation
1.0%/ft. max. for photoelectric models
adjustment
Remote test input 100 Ω max.
Reset voltage 2.5 V max.
Reset time 1 second min.
Color White head and base
Detector head
4 in. (10 cm) diam., 1.75 in. (4.44 cm) height
dimensions
Base dimensions 701U, 702U, 702RU: 6 in. (15.2 cm) diam.,
0.6 in. (1.3 cm) height
702E, 702RE: 4 in. (10 cm) diam., 0.5 in.
(1.27 cm) height
Compatible electrical
701U, 702U, 702RU: Standard single-gang
boxes [2]
electrical boxes; 4-inch square, round, or
octagonal boxes; 3.5-inch octagonal boxes;
WIREMOLD 5738A or 5739 fixture boxes
702E, 702RE: 3-inch round electrical boxes
Total height, head and
1.98 in. (5 cm)
base together
Field wiring size 12 to 24 AWG
Operating environment
Temperature
32 to 100°F (0 to 38°C)
Relative humidity 0 to 95% noncondensing
[1] For models 713-5U, 721UT, and 741UT.
[2] Bases may also be mounted without electrical boxes if the AHJ
approves it or if codes allow.
Regulatory information
Listings UL Listed (UL 268 and UL 521)
FM Approved (except for TS7-4 and TS7-4T)
CSFM (California State Fire Marshal) Approved
UL two-wire
S10A for all models except 731U/731L
compatibility
identifier
S11A for 731U/731L
S00 for all bases
Contact information
For contact information, see .
P/N 13083-EN • REV J • ISS 10APR14
2024年7月20日发(作者：愚初蓝)
ESL 700 Series Conventional Smoke and Heat
Detector Installation Sheet
Number
702E-
10PKG
702U
702RE
702RU
TS7-4
Description
Six-terminal base for all heads; 4 in. (10 cm)
Six-terminal base for all heads, 6 in. (15 cm)
Six-terminal base for 731U, 4 in. (10 cm)
Six-terminal base for 731U, 6 in. (15 cm)
Four-wire photoelectric smoke detector with alarm relay
(NO) output and remote alarm/trouble LED output
Head with base (sold together)
[1] UL Listed for releasing devices such as electromagnetic door
holders, fire dampers, or smoke dampers.
High voltage (120 V) base and head
The 702RE and 702RU bases have a special plastic protrusion
built in to prevent insertion of a low-voltage detector head into
a base containing damaging high voltages (120 V). These
bases can only be used with 731U heads. The 731U includes
auxiliary relay contacts and is only required when connecting
high voltage to the auxiliary relay.
Note: The 731U heads can also be used with 702E and 702U
bases for low voltage applications.
Table 2: Accessories
Number
204-12/24V
211-10PKG
706U1A [1]
706U2A [1][2]
706U3A [1][2]
Description
End-of-line, power supervision relay for four-wire
applications
Replaceable optical chamber for ESL smoke
detectors (set of 10)
Remote indicator with red alarm LED, for use with
721U and 741UT
Remote indicator with red alarm LED and keyed
remote test, for use with 721U and 721UT
Remote indicator with red alarm LED, keyed
remote test and reset, for use with 721U and
741UT
Smoke! In A Can (canned smoke) for functional
testing of smoke detectors
Extension tube for Smoke! In A Can
Description
The ESL 700 Series smoke or smoke with rate-of-rise heat
detectors have field-replaceable optical chambers. The
detector uses an optical sensing chamber to detect smoke and
a fixed-temperature heat sensor to detect heat from fire. For a
list of model numbers, see Table 1. For a list of accessories,
see Table 2.
Table 1: Model numbers
Number
711U
713-5U
721U
721UT
731U [1]
741U
741UT
Description
Two-wire photoelectric smoke detector head
Two-wire rate-of-rise and 57°C (135°F) fixed
temperature heat detector head
Two-wire photoelectric smoke detector, with remote test
input and remote alarm/trouble LED output
Two-wire photoelectric, with rate-of-rise heat detector
head with remote test, alarm/trouble LED output
Two-wire photoelectric smoke detector head with
auxiliary relay (NC/NO) output
Four-wire photoelectric smoke detector with alarm relay
(NO) output and remote alarm/trouble LED output
Four-wire photoelectric smoke and rate-of-rise heat
detector head, alarm relay (NO) output and remote
alarm/trouble LED output
(OEM only, not for resale) see 731U description
Three-terminal base for 711U and 713-5U heads, 6 in.
(15 cm) base, connectors
Head (sold separately from base)
SM-200
SM-EXT1
731L
701U
Base (sold separately from head)
[1] The remote alarm/trouble LED on the 706U1A, 706U2A, and
706U3A models works with both two-wire 721U/721UT and four-wire
741U/741UT models when connected as shown in Figure 6 item 7 and
Figure 7 item 11.
[2] 706U2A and 706U3A only work with the 721U/721UT two-wire
models, when connected as shown in Figure 6 item 6.
© 2014 UTC Fire & Security Americas Corporation, Inc. 1 / 6 P/N 13083-EN • REV J • ISS 10APR14
Installation
Notes
• Locate detectors in an operating environment as defined
in “Specifications” on page 6.
• Mount detectors on a firm, permanent surface.
Placement and spacing
Use the following location guidelines to optimize performance
and reduce the chance of false alarms.
Smoke detectors:
• Locate wall-mounted smoke detectors so the top of the
detector is no lower than 12 in. (30 cm) below the ceiling.
See Figure 1.
• As a guide, space smoke detectors on smooth ceilings
30 ft. (9.1 m) apart. When determining other spacing,
consider ceiling height, high air movement, and other
conditions or response requirements. Refer to NPFA 72.
• Locate detectors away from air conditioners, heating
registers, and any other ventilation source that may
interfere with smoke entering the unit; also away from
kitchens, wood stoves, garages, furnaces, and bathrooms.
Heat detectors:
• Do not install heat detectors in areas with an ambient
temperature above 100°F (38°C).
• Mount heat detectors on the ceiling no closer than 4 in.
from the sidewall. On the wall, mount them between 4 and
12 in. from the ceiling.
• When determining detector placement, consider ceiling
height, construction, and ventilation as these affect a
detector’s performance. Refer to NPFA 72.
Installing the base
Select a compatible electrical box for the base. See
“Specifications” on page 6 for a list of compatible electrical
boxes.
The 6-inch diameter bases have three parts; the base itself
that mounts on the electrical box or ceiling, a foam gasket, and
the base cover that conceals the mounting screws (see
Table 1 for model numbers and descriptions). The 6-inch
diameter bases are shipped loosely coupled to the base cover.
2 / 6
Figure 1: Smoke detector placement
(1)
(5)
(2)
(3)
(4)
(1) Smooth ceiling (3) Wall
(2) Gray indicates the (4) Floor
acceptable mounting area (5) 12 in. (300 mm) max.
Figure 2: The six-inch diameter mounting base
(1)
(2)
(3)
(4)
(1) Base cover (3) Gasket
(2) Screwdriver slot to unlock (4) Base
the head
P/N 13083-EN • REV J • ISS 10APR14
To install the base:
1. Remove the base cover by simply twisting it counter-
clockwise to unsnap (see Figure 2).
2. Pull the field wires through the electrical box, and then
through the center opening of the base. Connect the wires
to the appropriate terminals according to the wiring
diagrams (see Figure 6 or Figure 7).
3. Dress the wiring neatly, and then verify that the continuity
switch (jumper wire) is touching both terminal 1 and
terminal 2 (see Figure 8). Securely fasten the base with
the appropriate hardware.
4. Check all wiring and mounting connections.
5. Install the gasket. Align the molded line on the base with
the base cover, and then twist clockwise to snap in place.
Consider the locking mechanism before installation
Each detector head is equipped with a breakaway locking tab
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 removes by simply
turning counterclockwise.
However, when the head must lock to the base, break away
the locking tab with a pair of pliers. Then, to remove the
detector head, insert a small screwdriver into the slot on the
side of the base, pressing in while simultaneously turning the
detector head counterclockwise (see Figure 5).
Figure 3: Removing the locking tab slot
(1)
(1) To lock, break out this tab with pliers
Installing the detector head
To install a detector head, insert the head and rotate it
clockwise to properly align and seat it into the base (see
Figure 4). Then rotate it an additional 15 degrees to lock it in
place. This action automatically opens the continuity switch in
the base and establishes continuity in the system.
Figure 4: Installing the detector head
(1)
(2)
(1) Head (2) Base
P/N 13083-EN • REV J • ISS 10APR14
Removing the detector head
To remove the detector head, turn it counterclockwise. If the
locking tab was removed, insert a small screwdriver into the
locking tab slot on the side of the base, and then press in while
simultaneously turning the detector head counterclockwise
(see Figure 5).
Figure 5: Removing the detector head with the locking tab
removed
Wiring
Caution: Risk of system failure. The 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 two-wire installation, see Figure 6.
For four-wire installation, see Figure 7.
For optional four-wire operation, verify that the voltage range of
the control panel power supply is within the detector voltage
range, and that sufficient current is available to ensure the
operation of all detectors.
End-of-line supervision for four-wire systems
NFPA 72 requires supervision of power wiring in four-wire
systems. To accomplish this, install a power supervision unit
for the appropriate control unit voltage at the end of the
detector power circuit. See Figure 7.
The model 204-12/24V power supervision relay
accommodates both 12 VDC and 24 VDC operation. See the
204-12/24 V installation sheet for more information.
3 / 6
Figure 6: 700 series two-wire wiring diagram
(1)
IDC_IN
IDC_IN
(5)
(8)
2
701U
2
(9)
2
(10)
1
(3)
3
13
13
702U, 702E
5
702RU, 702RE,
702U, or 702E
6
5
4
64
NOCNC
(6)
(7)
Figure 7: 700 series four-wire wiring diagram (741UT head)
(2)
PWR_IN
PWR_IN
(3)
1
2
3
1
2
3
702U, 702E
6
5
4
702U, 702E
6
5
4
(4)
RD
BK
BN
BN
(5)
(1)
IDC_IN
IDC_IN
(11)
(7) Remote LED P/Ns 706U1A, 706U2A ,or 706U3A (for 721U or
721UT detector only)
(8) Base for 711 series and 713-5U detectors
(9) Base for 721UT detector only
(10) Base for 731U series detectors
(11) Remote LED P/Ns 706U1A, 706U2A, or 706U3A (for 741U or
741UT detectors only)
(1)
(2)
(3)
(4)
(5)
(6)
Initiating device circuit from a compatible listed control panel
DC power circuit
Continuity switch
Power supervision relay (P/N 204-12/24V)
End-of-line device
Remote test switch P/N 706U2A (for 721U and 721UT detectors
only in this two-wire application)
Note: Alarm contacts are shown in the normal state.
Testing
•
•
Prior to testing, remove the red dust cover. The units do
not work with the dust cover in place.
Follow the control panel’s recommended test procedure.
To limit inconvenience to building occupants during testing
it may be necessary to disable or disconnect the alarm
notification appliances, HVAC shutdown, elevator control,
releasing service devices, and extinguishing systems prior
to detector tests. If these or other functions controlled by
the fire system are disconnected during testing, be sure to
perform other tests to confirm that these functions will
operate during an actual event.
Be sure to enable or reconnect all devices at the
conclusion of testing.
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). See
Figure 8. 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.”
•
4 / 6 P/N 13083-EN • REV J • ISS 10APR14
Figure 8: Continuity switch
(1)
(1) Continuity switch
Testing the system
After completing all the connections and checking the wiring
per NFPA 72, apply power to the system. There should be no
alarm. If there is an alarm, check each detector to see if the
alarm LED is active. Reset the control panel and see if the
alarm clears. If the alarm does not clear after the panel is
reset, power down the system and determine if there is a
problem with the wiring. If there is no alarm, go to the last unit
and use a voltmeter to check the unit power for the specified
voltage.
Testing the smoke detector
Test the units in place annually, using Smoke! In A Can and
following the directions on the can.
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. The smoke detector must detect excessive
smoke in three consecutive tests for the alarm to sound.
If the test is successful (alarm sounds), the LED stays on. This
is a gross, go/no-go test and is not a reliable indication of unit
sensitivity. For in-depth sensitivity testing, see “Performing a
sensitivity test on a smoke detector” below.
To reset the detector, follow the control panel’s reset
procedure. Resetting the control panel will remove power from
the detector and allow it to reset. For a complete test of each
detector, verify the control unit alarm and all ancillary functions.
Performing a sensitivity test on a smoke detector
1. Hold a test magnet near the raised TEST letters on the
detector for more than one second (see Figure 9).
The LED flashes 1 to 9 times.
2. Count the number of LED flashes, and then use Table 3 to
determine the required action.
P/N 13083-EN • REV J • ISS 10APR14
Table 3: Description of LED flashes
0 to 1 Indication: Unserviceable hardware fault.
Action: Reset and rerun the sensitivity test. If the error
persists, replace the unit.
2 to 3 Indication: Unit is becoming insensitive.
Action: Clean and reset the unit. Rerun the sensitivity test. If
the error persists, replace the unit.
4 to 7 Indication: Unit is within normal sensitivity range.
Action: None
8 to 9 Indication: Unit is becoming too sensitive.
Action: Verify that the optical chamber is snapped down
securely. If the chamber is correctly installed, clean the unit
and replace the optical chamber.
After the sequence of flashes, if the detector finds the
sensitivity to be within limits and if all other tests pass, the
detector goes into alarm until reset by the panel. If the
sensitivity is not within limits, or an unserviceable hardware
fault is detected, the alarm LED continues to flash once per
second until the detector is reset by the panel. If the sensitivity
test indicates an unacceptable level, take the action
recommended in Table 3. If this action does not result in
acceptable sensitivity, replace the unit.
Figure 9: Smoke detector sensitivity level test
(1)
(1) Test magnet
Remote LED
Models 721U/721UT and 741U/741UT have connections for an
optional remote LED. The remote LED flashes every 9
seconds for a normal state, flashes once every second for a
trouble state, and turns on steady in alarm. It does not indicate
during loss of power.
Testing the heat detector
The 713-5U heat detector samples for heat continuously. The
photoelectric smoke/heat detectors sample for heat every three
seconds.
To test the heat detector:
1. Aim a hot air gun at the detector from 6 to 10 in. (15 to
25 cm) away, taking care not to melt the plastic.
The detector should go into alarm in less than 30 seconds.
5 / 6
Maintenance
If a smoke detector drifts beyond its approved sensitivity range
for more than 24 hours, or fails internal diagnostic tests during
power-up, the unit automatically indicates trouble by flashing
its LED every second. Under normal conditions, the LED
flashes every nine seconds. Therefore, a visual check of the
LED status meets NFPA 72 field sensitivity testing
requirements.
In accordance with NFPA 72, visually check the LED flashes
for unit sensitivity within one year of installation and every
alternate year thereafter for commercial installations, or every
three years for residential sites.
Cleaning the smoke detector
The smoke detectors have an optical chamber that unsnaps for
easy field cleaning and service. Whenever the LED indicates
that cleaning is necessary, follow the steps given below.
To clean the smoke detector:
1. Remove the detector cap (see Figure 10), and then
unsnap and throw away the optical chamber.
2. Use compressed air to thoroughly clean the optical base,
and then snap a new optical chamber into place.
Note: Be sure the new optical chamber is seated all the
way down.
3. Replace the detector cap and verify sensitivity. See
“Performing a sensitivity test on a smoke detector” on
page 5.
Figure 10: Optical chamber
(1)
(2)
(1) Detector cap (2) Field-replaceable optical chamber
Specifications
Voltage 8.5 to 33 VDC, not polarity sensitive
Maximum ripple 10% (Vp-p)
Typical average
711U, 713-5U: 70 μA
standby current (24 V)
721U, 721UT, 731L, 731U, 741U, 741UT:
100 µA
6 / 6
Typical alarm current Two-wire: 60 mA (max.), if not limited by
control panel
Four-wire: 50 mA (max.) but 15 mA (min.)
Remote LED output
5.0 to 8.5 mA
current
Relay contacts 2 A at 30 VDC, 1 A at 120 VAC
RFI immunity 20 V/m minimum, 0 to 1,000 MHz
Heat detector
Fixed temperature: 135° ±3°F (57° ±1.7°C)
specifications [1]
Rate of rise: 15°F/min and > 105°F
(8.3°C/min and > 40.6°C)
Heat detector spacing 721UT, 741UT: 50 ft.
713-5U: 70 ft.
Sensitivity 1.55 to 3.22%/ft. obscuration
Drift compensation
1.0%/ft. max. for photoelectric models
adjustment
Remote test input 100 Ω max.
Reset voltage 2.5 V max.
Reset time 1 second min.
Color White head and base
Detector head
4 in. (10 cm) diam., 1.75 in. (4.44 cm) height
dimensions
Base dimensions 701U, 702U, 702RU: 6 in. (15.2 cm) diam.,
0.6 in. (1.3 cm) height
702E, 702RE: 4 in. (10 cm) diam., 0.5 in.
(1.27 cm) height
Compatible electrical
701U, 702U, 702RU: Standard single-gang
boxes [2]
electrical boxes; 4-inch square, round, or
octagonal boxes; 3.5-inch octagonal boxes;
WIREMOLD 5738A or 5739 fixture boxes
702E, 702RE: 3-inch round electrical boxes
Total height, head and
1.98 in. (5 cm)
base together
Field wiring size 12 to 24 AWG
Operating environment
Temperature
32 to 100°F (0 to 38°C)
Relative humidity 0 to 95% noncondensing
[1] For models 713-5U, 721UT, and 741UT.
[2] Bases may also be mounted without electrical boxes if the AHJ
approves it or if codes allow.
Regulatory information
Listings UL Listed (UL 268 and UL 521)
FM Approved (except for TS7-4 and TS7-4T)
CSFM (California State Fire Marshal) Approved
UL two-wire
S10A for all models except 731U/731L
compatibility
identifier
S11A for 731U/731L
S00 for all bases
Contact information
For contact information, see .
P/N 13083-EN • REV J • ISS 10APR14