Det-Tronics U7099 Dual Frequency IR Detector/Controller - Manual (Page 6)

2. Mount the junction box in the desired location. See
Figure 3 for mounting dimensions.
3. Connect the input power and relay contact leads
through the conduit to the terminal blocks. Figures
4 and 5 show the wiring diagrams for the standard
U7099 and the U7099 with an Auxiliary Fire relay,
respectively. Figure 9 shows the terminal block and
end of line resistor locations. Figure 10 shows typi-
cal system wiring using two standard U7099
Detector/Controllers with an end of line resistor
installed.
IMPORTANT
An 8.25 kilohm end of line resistor is installed
between terminals A and B on standard U7099
Detector/Controllers for use if required (see Figure
4). If an end of line resistor is not required, remove
the resistor from the terminal block (see Figure 9 for
location). With the end of line resistor installed, there
will be continuity between the Fire relay common
(terminal 5) and the Fault relay common (terminal 8).
4. Check all field wiring to ensure that the proper con-
nections have been made. If conduit is used, pour
the conduit seals and allow them to dry.
5. Plug P1 from the detector barrel assembly into the
terminal block board receptacle.
6. Replace the four hex screws attaching the detector
barrel to the junction box.
7. Loosen the swivel adjustment screw to position the
detector. Tighten screw when desired position is
obtained.
CAUTION
Do not rotate swivel more than 360 degrees.
Swivel contains internal wires that can be dam-
aged if rotated more than 360 degrees.
8. Perform the “Startup Procedure.”
STARTUP PROCEDURE
The following startup procedure should be performed
after installation of the equipment is complete.
1. Disable any extinguishing system connected to the
unit. Connect external annunciation equipment to
the U7099 relay contacts.
2. Turn on the input power to the U7099 (allow one
minute warmup).
3. Hold the Det-Tronics Model W868 Test Lamp
against the viewing window of the detector for 5 to
10 seconds.
4. The alarm relay in the U7099 energizes the external
annunciation equipment.
5. Turn off the IR source.
6. If the U7099 fails to pass the test, refer to the
“Troubleshooting” section of this manual.
7. When all detectors have been checked for normal
operation, they should be checked to see if they
adequately cover the protected areas for complete
fire protection.
5 95-8272
B0914
CIRCUIT
PROTECTION
FUSES
250 VOLT
1/4 AMP
8.25K END OF LINE RESISTOR - REMOVE IF NOT REQUIRED
Figure 9—Terminal Block
7
8
9
B
A
8.25K
0.25W
6
5
4
3
2
1
7
8
9
B
A
6
5
4
3
2
1
FIRE FAULT FIRE FAULT
U7099 U7099
FIRE ALARM
PANEL –
+
+24 VDC
POWER SUPPLY
–
+
–
+
–
+
A1689
Figure 10—Typical U7099 System Wiring Using End of Line Resistor