D4240 System Sensor, D4240 Datasheet - Page 4

• Manufacturer Part Number: D4240
• Description: Duct Smoke Detector
• Manufacturer: System Sensor

figure 5. Procedure for VerifYing air fLoW LeSS Than 500 fPm:
[8] fieLd Wiring inSTaLLaTion guideLineS
All wiring must be installed in compliance with the National Electrical Code
and the local codes having jurisdiction. Proper wire gauges should be used.
The conductors used to connect smoke detectors to control panels and acces-
sory devices should be color-coded to prevent wiring mistakes. Improper con-
nections can prevent a system from responding properly in the event of a fire.
For signal wiring, (wiring between interconnected detectors or from detectors
to auxiliary devices), it is recommended that single conductor wire be no
smaller than 18 gauge.
Smoke detectors and alarm system control panels have specifications for al-
lowable loop resistance. Consult the control panel manufacturer’s specifica-
tions for the total loop resistance allowed for the particular control panel being
used before wiring the detector loop.
figure 6. oPTionaL SenSor 2 configuraTion and Wiring:
SS-300-022
HIGH
MODEL #607-01
TRANSMITTER
DIFFERENTIAL
PRESSURE
SENSOR ONLY
CO-LOCATED
D4S
LOW
D4240
1 WATT RESISTOR
SENSOR
VOLT METER FLUKE
LEDs
1000 OHM 5%
MODEL 87 OR
EQUIVALENT
+
BOARD LED 2
POWER
FIELD SELECTABLE
–
BOARD LED 1
DIP SWITCHES
TO SAMPLING TUBE
TO EXHAUST TUBE
POWER
SENSOR #1
TERMINALS
BATTERY
9 VOLT
TAMPER
Y
SENSOR 1
TEST/RESET
VDC SUPPLY
Y
ALARM
WIRING TERMINALS
R
+
BUTTON
B
-
15 TO 36
TAMPER
Y
SENSOR 2
Y
SUP
R
+
BATTERY
BATTERY
B
-
H0163-01
9 VOLT
9 VOLT
AUX A
TERMINALS
SENSOR #2
GROUND
SCREW
AUX B
4
[8.1] Wiring inSTrucTionS
The D4240 detectors are designed for easy wiring. The housing provides a
terminal strip with clamping plates. The D4S housing provides 4 wiring ter-
minals with clamping plates. Wiring connections are made by sliding the bare
end of the wire under the plate, and tightening the clamping plate screw. See
Figure 7 on page 5 for system wiring.
[8.2] SenSor 2 inSTaLLaTion/Wiring
The power board is capable of controlling a second housed sensor. The second
sensor, model D4S, can be wired to the power board per the following:
1.
2.
3.
4.
[9] uniT configuraTion
A three position Dip Switch is included on the D4240 in order to configure
the setup of the unit. One switch is used to determine it there are one or two
sensors connected to the Power Board. The second switch selects an instanta-
neous or 7-minute tamper Delay. A tamper Condition indicates that the cover
of the sensor Housing has been removed or has not been secured properly.
The third switch is used to turn the Shutdown On Trouble feature on or off.
With this feature turned On, the Aux relay will switch states when a Trouble
Condition occurs.
*Trouble is indicated when the Supervisory Relay, switches state-Termi-
nals 3 and 14 are open in a Trouble Condition
Causes of a Trouble Condition may be:
• Unit loses Power
• Cover Tamper Feature times out
• Wiring Problems between the Sensor and the Power Board
• Mismatch between number of sensors connected to the Power Board and
240 VAC
Connect wires to the four wire terminals in the corner of the D4S sensor
housing designated as Tamper (Y,Y), +R, and –B. Route wires through the
conduit openings in the sensor housing and D4240 power board housing.
Connect the opposing ends of the wires to the terminal connections
marked “Sensor 2” on the Power board. See Figure 6 for reference. En-
sure that wires are connected to the appropriate terminal locations. A
No. 0 or 1 phillips screwdriver should be used for terminal connection.
The tamper terminals are not polarity sensitive.
Adjust the middle dip switch on the power board to indicate (2) sensors
as shown in Figure 6.
The D4S can only be used with new InnovairFlex models and is not com-
patible with previously sold detectors.[9] Unit Configuration:
the Dipswitch setting
DC INPUT
24 VAC/
AUX OUT +, 19
24V AC/DC, 10
AUX OUT -, 20
24V AC/DC, 9
INT/AUX-, 1
ALARM, 15
R TEST, 11
R RESET, 2
INT+, 12
VARISTOR
ACC +
ACC -
VAC INPUT
240
7, NO
18, C
8, NC
17, NO
6, C
16, NC
14, N0
3, C
13, NC
5, NO
4, C
TAMPER
TAMPER
Y
Y
SENSOR 2
Y
Y
D4240
D4S
+
R
R
+
I56-3936-002R
–
–
B
B
H0557-16