RECTANGULAR LED
DETECTOR HEAD
BASE
OPENING HERE
LONG
ALIGNMENT
MARK
SHORT
ALIGNMENT
MARK
HEAT SENSOR
GFE-CH Rate of Rise with Fixed Temperature Detector
Installation Wiring Diagram
TYPICAL WIRING DIAGRAM
Figure 1(a)
shows the typical wiring diagram of the
2-wire heat detector when connected to a Fire alarm
control panel.
INITIATING
LOOP
EN54 LISTED
COMPATIBLE
CONTROL
PANEL
+
-
FIRST DETECTOR BASE
LAST DETECTOR BASE
EOL
RESISTOR
5
2
5
2
6
1
3
4
6
1
3
4
+
-
+
REMOTE
INDICATOR
CLASS A OPTIONAL WIRING
NOTE: IF REMOTE INDICATOR IS NOT USED. POLARITY TO DETECTOR MAY BE REVERSED.
-
Figure 1(b)
shows the typical wiring diagram of the
4-wire heat detector (separate power & relay wiring).
WARNING
TO PREVENT DETECTOR CONTAMINATION AND
SUBSEQUENT WARRANTY invalidation, THE
DETECTOR MUST REMAIN COVERED UNTIL THE AREA
IS CLEAN AND DUST FREE.
INSTALLING THE BASE
1. To insure proper installation of the detector head to the
base, all the wires should be properly dressed at
installation:
(A) Position all the wires flat against terminals.
(B) Fasten the wires away from connector terminals.
2. If you use a jumper wire to connect the two poles of
terminals 2 and 5 when testing the detector loop
continuity, be sure to remove the jumper wire prior to
the installation of the detector head.
3. The end-of-line device shown in fig. 1(a) and 1(b)
should be compatible with the control unit. The
end-of-line supervisory relay used should be rated for
the DC power voltage used.
4. Open area detectors are intended for mounting on a
ceiling or a wall in accordance with Local
requirements.
5. The base of the detector can be mounted directly onto
an electrical junction box such as an octagonal (75mm,
90mm or 100mm), a round (75mm), or a square
(100mm) box without using any type of mechanical
adapter.
INSTALLING THE HEAD
1. Align the components as shown in Figure 2.
2. Mate the detector head onto the base and twist
clockwise to secure it.
3.
Do not install the detector head until the area is
thoroughly cleaned of construction debris, dusts, etc.
The maximum number of detectors that can be
connected to the same detection zone is typically
30.(see panel installation instructions)
Fig. 2 Fitting detector head to base
ADJUSTING THE RELAY FOR NO/NC Operation
The normal condition for the relay is
“
normally open
”
(NO).
1. To adjust the normal condition of the relay to
“
normally closed
”
(NC), insert a screwdriver into the
rectangular hole located on the side between the front
cover and base and rotate to remove the front cover.
2. Refer to figure 3. There is a jumper head next to the
relay on the PCB. Remove the jumper head and reinsert
it in the NC position.
3. Carefully replace the front cover.
Relay contact rating:
1A@30VDC,
0.5A@125VAC
.
TESTING
TESTING
All remote signaling systems, releasing devices and extinguishing
systems should be disconnected during the test period and reconnected
at the conclusion of testing.
2. After energizing the detector head for approximately
one minute, check to see the indicator red LED
flashing once every 4-6 seconds. If red LED fails to
flash, it indicates the non-functioning of the detector or
faulty wiring. Re-check the wiring or replace the
detector if necessary.
3. The detector to be tested should be subject to a flow of
warm air at a temperature of between 65
°
C and 80
°
C.
(This requirement can be met by some domestic hair
dryers).
Proceed as follows:
(1). Switch on the warm airflow and check that
Fig. 3 Schematic of detector structure
When front cover is open.
HEAT SENSOR
RELAY
Jumper for
relay
status
LED
