FIGURE 7. MULTIPLE FAN SHUTDOWN
(INTERCONNECTION OF DUCTSD240’S):
DETECTOR 1
240 VAC
DUCTSD240
DUCTSD240
C, AUX A
NC, AUX A
30
DET.
MAX.
INT/AUX–
INT+
SYSTEM CONTROL
POWER, FAN
CONTROL OR
THERMOSTAT
SYSTEM CONTROL
POWER, FAN
CONTROL OR
THERMOSTAT
12
1
–
+
2
11
15
20
19
9
10
16
6
5
13
3
14
17
8
18
7
4
DETECTOR 2
240 VAC
C, AUX A
NC, AUX A
INT/AUX–
INT+
12
1
–
+
2
11
15
20
19
9
10
16
6
5
13
3
14
17
8
18
7
4
[10.1] IMPORTANT INTERCONNECTION NOTES:
• When using the interconnect feature, all interconnected units must be
powered using the same independent supply.
•
Polarity must be maintained throughout the interconnect wiring.
Connect the INT+ terminal on unit 1 to the INT+ terminal on unit 2
and so on. Similarly, connect the INT/AUX- terminal on unit 1 to the
INT/AUX- terminal on unit 2 and so on.
• Up to 30 DUCTSD240 units may be interconnected.
• A combination of DUCTSD240 and D4240 units may be interconnected
up to a maximum of 30 units.
NOTE: Alarm can be reset only at the initiating device and not at the devices
interconnected.
[11] VERIFICATION OF OPERATION
[11.1] POWERING THE UNIT
Apply 24 VDC power to 9 and 10 terminals on the power board or apply 240
VAC on terminals named 240VAC. See Figure 7 and electrical specifications
for details.
[11.2] PERFORM DETECTOR CHECK
VERIFY STANDBY AND TROUBLE TEST per Table 3 on page 7. The use of a
remote accessory for visible indication of power and alarm is recommended.
[11.3] SENSITIVITY VERIFICATION
The sensitivity of the sensor is confirmed to be operating within its allowable
range each time the sensor LEDs blink green every 5 seconds. Note in a main-
tenance condition, the sensor LEDs will blink red every 5 seconds as depicted
in
Table 3
on page 7. The maintenance condition indicates that the sensor is
operating outside its original factory preset sensitivity and shall be cleaned or
replaced. Replacement 2D51 sensors are available as a separate item. See Sec-
tion 9 for reference. This is a valid UL test.
[11.4] DETECTOR TESTING AND MAINTENANCE PROCEDURES
Notify the proper authorities that the smoke detector system is undergoing
maintenance, and that the system will temporarily be out of service. Disable
the zone or system undergoing maintenance to prevent unwanted alarms and
possible dispatch of the fire department.
[11.4.1] SMOKE RESPONSE TESTS
Option 1: Utilize smoke test port as described in Table 2 below.
Option 2: To determine if smoke is capable of entering the sensing chamber,
visually identify any obstructions. Plug the exhaust and sampling tube holes
to prevent ducted air from carrying smoke away from the detector head, then
blow smoke such as cigarette, cotton wick, or punk directly at the head to
cause an alarm. REMEMBER TO REMOVE THE PLUGS AFTER THIS TEST, OR
THE DETECTOR WILL NOT FUNCTION PROPERLY.
FIGURE 8. MULTIPLE FAN SHUTDOWN (INTERCONNECTION OF
DUCTSD240 TO D4240):
D4240
D4240
DUCTSD240
DUCTSD240
DUCTSD240
H0640-01
H0639-01
ALARM TEST
OPTIONS
TEST METHOD
DETECTOR RESET
Test/Reset
Button
Press and hold test/reset button
for at least 7 seconds
Press and release the
test/reset button
Magnet Test
(M02-04-00)
Place magnet on sensor cover in
designated location for 5 seconds
Press and release the
test/reset button
Remote Test
Accessory
Red LED on sensor and ac-
cessory will latch on: verify
control panel alarm status and
execution of all intended aux-
iliary functions (i.e. fan shut-
down, damper control, etc.)
Reset at accessory, at
system control panel,
quick press and release
the test/reset button
Smoke Test
Port
1. Put detector into Speed-Up
Test mode
Press and release the
test/reset button
a. Press and hold Test/Reset
button for 2 to 7 seconds
b. When in Speed-Up Test
mode sensor LEDs will alter-
nately flash Red and Green
2. Lift tethered plug sealing the
smoke test port via pull tab
3. Spray canned smoke into the
test port
4. After test complete, tethered
plug MUST be reinserted
[11.4.2] SMOKE ENTRY USING AEROSOL SMOKE
This test is intended for low-flow systems (100-500 FPM). If the air speed is
greater than 500 FPM, use a conventional manometer to measure differential
pressure between the sampling tubes, as described in Section 7.1.
Drill a
1
⁄
4
inch hole 3 feet upstream from the duct smoke detector. With the air
handler on, measure the air velocity with an anemometer. Air speed must be
at least 100 FPM. Spray aerosol smoke* into the duct through the
1
⁄
4
inch hole
for five seconds. Wait two minutes for the duct smoke detector to alarm. If the
duct smoke detector alarms, air is flowing through the detector. Remove the
duct smoke detector cover and blow out the residual aerosol smoke from the
chamber and reset the duct smoke detector. Use duct tape to seal the aerosol
smoke entry hole.
*Aerosol smoke can be purchased from Home Safeguard Industries at home-
safeguard.com, model 25S Smoke Detector Tester, and Chekkit Smoke De-
tector Tester model CHEK02 and CHEK06 available from SDi. When used
properly, the canned smoke agent will cause the smoke detector to go into
alarm. Refer to the manufacturer’s published instructions for proper use of
the canned smoke agent.
CAUTION
Canned aerosol simulated smoke (canned smoke agent) formulas will vary by
manufacturer. Misuse or overuse to these products may have long term ad-
verse effects on the smoke detector. Consult the canned smoke agent manufac-
turer’s published instructions for any further warnings or caution statements.
[11.5] INSTALL THE COVER
Install the covers making sure that the cover fits into the base groove. Tighten
the seven screws that are captured in the covers.
TABLE 2.
5
I56-4260-002R
06-10
