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[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 accessory de-
vices should be color-coded to prevent wiring mistakes. Improper connections 
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 AWG (0.82 mm²).

Smoke detectors and alarm system control panels have specifications for al-
lowable loop resistance. Consult the control panel manufacturer’s specifications 
for the total loop resistance allowed for the particular control panel being used 
before wiring the detector loop.

[8.1] WIRING INSTRUCTIONS

The DSD120 detector is designed for easy wiring. The housing provides a termi-
nal strip with clamping plates. See 

Figure 6

 on page 4 for system wiring.

*Trouble is indicated when the Supervisory Relay, switches state-Terminals 
3 and 14 are open in a Trouble Condition
Causes of a Trouble Condition may be:

•  Unit loses Power
•  Cover Tamper Feature times out
•  When in “Standby” mode, the product goes into “Cover Tamper Violation” 

if the cover has been removed or improperly replaced and remains so for 
at least 7 minutes. As soon as the cover is properly reseated, the product 
reverts to “Standby” automatically.

HIGH

LOW

9 VOLT

BATTERY

9 VOLT

BATTERY

9 VOLT

BATTERY

TO SAMPLING TUBE
TO EXHAUST TUBE

DIFFERENTIAL 

PRESSURE 

TRANSMITTER 

MODEL #607-01

15 TO 36 

VDC SUPPLY

1000 OHM 5%

1 WATT RESISTOR

VOLT METER FLUKE 

MODEL 87 OR 

EQUIVALENT

+

FIGURE 5. PROCEDURE FOR VERIFYING AIR FLOW LESS THAN 500 FPM:

H0163-00GS

FIGURE 6. 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 24VDC of either polarity 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 during 

alarm as indicated by arrows. Auxiliary contacts are not to be used for connec-
tion to the control panel. See specifications for contact ratings.

H0558-07

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.

IN-GE-DSD120-01-01 4 

I56-9201-000 

 

 5/6/2019

Содержание DSD120

Страница 1: ...Using No Accessories Max standby current 21 mA 24 VDC 65 mA RMS 24VAC 60Hz 20 mA RMS 120 VAC 60 Hz Max alarm current 65 mA 24 VDC 135 mA RMS 24 VAC 60 Hz 35 mA RMS 120 VAC 60 Hz CONTACT RATINGS Alarm initiation contacts SPST 2 0A 30 VDC resistive Alarm auxiliary contacts DPDT 10A 30 VDC resistive 10A 250 VAC resistive 1 2 HP 240 VAC 1 4 HP 120 VAC NOTE Alarm auxiliary contacts shall not be connect...

Страница 2: ...e parameters If necessary use a velocity meter anemometer to check the air velocity in the duct 5 2 DETERMINE MOUNTING LOCATION AND CONFIGURATION On ducts wider than 18 inches it is recommended that the detector be mounted downstream of a bend obstruction in the duct or the supply or return air inlet Exception Installation of duct detectors can be on or within a commercial packaged rooftop heating...

Страница 3: ...y holes in the protruding sec tion of tube Be sure to seal the duct where the tube protrudes FIGURE 4 DETECTOR 3 4 HOLE 12 1 4 2 H0215 00 NOTE Air currents inside the duct may cause excessive vibration especially when the longer sampling tubes are used In these cases a 3 inch floor flange available at most plumbing supply stores may be used to fasten the sampling tube to the other side of the duct...

Страница 4: ...DEL 607 01 15 TO 36 VDC SUPPLY 1000 OHM 5 1 WATT RESISTOR VOLT METER FLUKE MODEL 87 OR EQUIVALENT FIGURE 5 PROCEDURE FOR VERIFYING AIR FLOW LESS THAN 500 FPM H0163 00GS FIGURE 6 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 SHU...

Страница 5: ...very 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 2D51A 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 ...

Страница 6: ...and then gently pushing it until it locks into place 8 Reinstall the detector FIGURE 9 DETECTOR SENSOR EXPLODED VIEW SENSOR COVER SENSING CHAMBER COVER AND SCREEN SENSOR CHAMBER COVER REMOVAL TABS C1009 00 12 2 REINSTALLATION 1 Reinstall the detector in its housing 2 Restore system power 3 Perform Detector Check Section 11 2 4 Notify the proper authorities testing has been completed and the smoke ...

Страница 7: ...ern exists until unit either enters Alarm or reverts to Standby within approximately 60 seconds Supervisory relay Terminals 3 and 14 are closed Alarm Relay Terminals 4 and 5 are open Aux Relay does not switch states Terminals 6 and 16 are closed Terminals 8 and 18 are closed Trouble Red Blink every 5 seconds Amber Solid Supervisory relay Terminals 3 and 14 are open Alarm Relay Terminals 4 and 5 ar...

Страница 8: ...send defective units post age prepaid to 150 English Drive Moncton N B Canada E1E 4G7 Please include a note describing the malfunction and suspected cause of failure The Company shall not be obligated to replace units which are found to be defective because of damage unreason able use modifications or alterations occurring after the date of manufacture In no case shall the Company be liable for an...

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