System Sensor D4120W - Manual (Page 5)

SS-300-010 5 I56-3046-004R
figure 7. SYSTem Wiring diagram for 4-Wire ducT Smoke deTecTorS:
CAUTION
Do not loop wire under terminals when wiring detectors. Break wire runs to provide system supervision of connections.
24VAC/DC
9 10
AUXILIARY CONTACTS
FOR FAN SHUTDOWN, ETC. (NOTE 2)
16 6 17 8 18 7
N.O. C. N.C. N.O. C. N.C.
16 6 17 8 18 7
N.O. C. N.C. N.O. C. N.C.
SUPERVISORY CONTACTS
(NOTE 3)
24V
9 10
AUXILIARY CONTACTS
FOR FAN SHUTDOWN, ETC. (NOTE 2)
SUPERVISORY CONTACTS
(NOTE 3)
SUP N.O. SUP C SUP C SUP N.O.
4
5 ALARM
INITIATION
CONTACTS
(NOTE 4)
4
5 ALARM
INITIATION
CONTACTS
(NOTE 4)
ALARM
INITIATION
LOOP
UL/FM LISTED
4-WIRE
CONTROL PANEL
+
120
VAC
120
VAC
OR OR
AUX A AUX B AUX A AUX B
ALARM N.O. ALARM N.O.
ALARM C ALARM C
3 3 14 14
FIRST DETECTOR IN THE LOOP
POWER INPUTS (NOTE 1) POWER INPUTS (NOTE 1)
LAST DETECTOR IN THE LOOP
EOL RESISTOR
SPECIFIED BY
PANEL
MANUFACTURER
NOTE 1: 24V Power Inputs accept a non-polarized 24VDC or 24VAC 50-60Hz.
120VAC Power Inputs accept only 120VAC 50-60Hz. Connect power source to
appropriate terminals of each detector. See specifications for additional power
supply information.
NOTE 2: Auxiliary contacts shown in standby position. Contacts switch dur-
ing alarm as indicated by arrows. Auxiliary contacts are not to be used for
connection to the control panel. See specifications for contact ratings.
NOTE 3: Supervisory contacts shown in standby position. Open contacts indi-
cate a trouble condition to the panel. See specifications for contact ratings.
NOTE 4: Alarm Initiation contacts shown in standby position. Closed contacts
indicate an alarm condition to the panel. See specifications for contact ratings.
H0558-07
[9] uniT configuraTion:
A three position dipswitch is included in order to configure the setup of the
unit. One switch is used to determine it there are one or two sensors con-
nected to the Power Board. The second switch selects an instantaneous 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
the dipswitch setting
Designation Default Selection Features
TRBL SHUTDN
OFF OFF Aux relay does not switch states with a Trouble condition
ON Aux relay switches states with a Trouble condition
SENSORS
1 1 Only one sensor is connected the Power Board
2 Two sensors are connected to the Power Board
MIN TMPR
DELAY
7 7
Provides a Trouble condition ( terminals 3 and 14 open) when sensor housing cover has
been removed or has been secured improperly for more than 7 minutes
0 Provides an instantaneous Trouble condition(terminals 3 and 14 open) upon cover removal
TabLe 2. diP SWiTch SeTTingS: