System Sensor D4240 User Manual

Page 7

19
20

D4240

APA151/451

(GREEN LED) POWER

FIELD

INSTALLED

JUMPER

+
–

AUX OUT +

AUX OUT –

ALARM
R TEST

ACC +
ACC –

R RESET

5
4

SUP, NO
SUP, C

NOTE: WIRING DIAGRAM SHOWN IS FOR D4240 4-WIRE DUCT SMOKE

DETECTOR SYSTEM EQUIPPED WITHOUT A CONTROL PANEL.
NOTE: A TROUBLE CONDITION IS INDICATED

BY LOSS OF GREEN LED

COMMON

(RED LED) ALARM

AUX

ACC
ACC

AUX

ACC
ACC

(-)
(-)

(+)

RTS2/RTS2-AOS

D4240

NOTE: If polarity of Acc. (+) and Acc. (—) are reversed,

an Amber LED on sensor 2 of the duct smoke detector

power board will exist indicating a trouble condition.

SS-300-022

7 I56-3936-003R

FIGURE 10. DETECTOR SENSOR EXPLODED VIEW:

SENSOR

COVER

SENSING

CHAMBER

COVER AND

SCREEN

SENSOR

CHAMBER

COVER

REMOVAL

TABS

H0584-00

19
20

3
2

D4240

SSK451

SUP. SIGNAL

POWER +

+
–

AUX OUT +

AUX OUT –

ALARM

R TEST

ACC +
ACC –

R RESET

5
4

SUP, NO
SUP, C

NOTE: WIRING DIAGRAM SHOWN IS FOR D4240 4-WIRE DUCT SMOKE

DETECTOR SYSTEM EQUIPPED WITHOUT A CONTROL PANEL.

POWER –

COMMON

TEMPORAL SELECT

TEST

RESET

FIELD

INSTALLED

JUMPER

FOR

TEMPORAL

PATTERN

19 AUX OUT +

ALARM SIGNAL

FIELD

INSTALLED

JUMPER

ALARM SIGNAL

FIGURE 14. WIRING DIAGRAM FOR D4240 TO SSK451:

FIGURE 15. WIRING DIAGRAM:

H0583-18

H0626-03

H0584-15

19
20

1
5

D4240

RTS451/RTS451KEY

(GREEN LED)

POWER

(RED LED)

ALARM

FIELD

INSTALLED

JUMPER

+
–

AUX OUT +

AUX OUT –

ALARM
R TEST

ACC +
ACC –

R RESET

5
4

SUP, NO
SUP, C

FOR RTS451KEY ONLY WITHOUT A CONTROL PANEL

FIELD

INSTALLED

JUMPERS

NOTICE: If any unitary packaged air conditioning units are run during the
drywall installation phase of any building under construction to accelerate
the drying of joint compound, the subsequent sanding of those drywall joints
and resulting dust may compromise the sensor heads in duct smoke detectors.
To avoid this condition it is recommended that the sensor heads be removed
during the construction phase.

For additional information visit www.systemsensor.com for a detailed techni-
cal bulletin.
[14] SENSOR REPLACEMENT (PART NO. 2D51)
1. Remove the sensor head by rotating counterclockwise.
2. Pull gently to remove it.
3. To replace the sensor head, align the mounting features and rotate clock-

wise into place.

[15] OPTIONAL ACCESSORIES
[15.1] RTS451/RTS151/RTS451KEY/RTS151KEY REMOTE TEST
STATION
The RTS451/RTS151/RTS451KEY/RTS151KEY Remote Test Station facilitates
test of the alarm capability of the duct smoke detector as indicated in the
RTS451/RTS151/RTS451KEY/RTS151KEY manual. The D4240 duct smoke de-
tector can be reset by the RTS451/RTS151/RTS451KEY/RTS151KEY. To install
the RTS451/RTS151/RTS451KEY/RTS151KEY, connect the device as shown in
Figure 13; wire runs must be limited to 25 ohms or less per interconnecting
wire. If a system control panel is used, the panel itself may require testing.
[15.2] SSK451 MULTI-SIGNALING ACCESSORY
The SSK451 Multi-Signaling accessory combines a sounder feature with a key ac-
tivated test and reset function. Green, amber and red LEDs provide a visual indi-
cation of power, trouble, and alarm respectively. An optional strobe (PS24LOW)
with a smoke lens can be added to conform to the codes of certain jurisdictions.

To install the SSK451, connect the device as shown in Figure 14.

H0582-24

FIGURE 11. WIRING DIAGRAMS FOR OPTIONAL ACCESSORIES:

[13.1] DETECTOR SENSOR
1. Remove the sensor to be cleaned from the system.
2. Remove the sensor cover by pulling outward on each of the four removal

tabs that hold the cover in place. See Figure 10.

3. Vacuum the screen carefully without removing it. If further cleaning is

required continue with Step 4, otherwise skip to Step 7.

4. Remove the chamber cover/screen assembly by pulling it straight out.
5. Use a vacuum cleaner or compressed air to remove dust and debris from

the sensing chamber.

6. Reinstall the chamber cover/screen assembly by sliding the edge over the

sensing chamber. Turn until it is firmly in place.

7. Replace the cover using the holes for the LEDs for alignment and then

gently pushing it until it locks into place.

8. Reinstall the detector.
[13.2] REINSTALLATION
1. Reinstall the detector in its housing.
2. Restore system power.
3. Perform Detector Check, Section 12.3.
4. Notify the proper authorities testing has been completed and the smoke

detector system is back in operation.

ALARM

AUX OUT –

(+)

(–)

ALARM

AUX OUT –

(+)

(–)

RED

MHR/MHW

(OPTIONAL) AUDIO

ALERT

D4240

DUCT DETECTOR

D4240

DUCT DETECTOR

RA400Z(OPTIONAL)

REMOTE (LED)

ANNUNCIATOR

H0554-1

FIGURE 12. WIRING DIAGRAM FOR D4240 TO APA151 OR APA451:

FIGURE 13. WIRING DIAGRAM FOR D4240 TO RTS451/RTS151/RTS-
451KEY/RTS151KEY:

15.3 RTS2/RTS2-AOS MULTI-SIGNALING ACCESSORY
The RTS2 and RTS2-AOS multi-signaling accessories are designed for use with
InnovairFlex 4-wire conventional duct smoke detectors only. The accessory
has two bicolored LEDs that indicate the sensor status of up to two connected
duct smoke detectors. The key switch on the unit can be used to select a con-
nected duct detector sensor (either sensor1 or sensor 2), and the selected sen-
sor can be tested or both sensors can be reset simultaneously using the test/
reset button. LED status indications include: Standby (green blink), Trouble
(amber), Maintenance (amber blink) and Alarm (red).

With the key switch selected, there is also the capability of obtaining a sen-
sitivity measurement of the selected sensor using the SENS-RDR sensitivity
reader (sold separately).