NZ100 Installation Commissioning & Operation
Page 3
3.3
Internal Layout
Mains Transformer
Mains Termination
Reset Switch
Buzzer Mute Switch
Walk Test Switch
3A
0V
DS1232
U4
UA78S40P
U 2
ST6265
U3
C N 4
TB2
U1
L1
RL1
TB1
TB3
RN5
C N 2
CN3
K 3
SW1
SW2
SW3
C N 1
MC74HC595A
U5
K1
TX CONNECTION
BELL
+
-
-
+
-
+
-
WALK TEST
BUZZER
MUTE
NORMAL
BELL
SYS.
DEFECTS
SMOKE ONLY
+
AUX
1
2
SECONDARY
FUSE
BELL
BATT
MAINS ON
30V C.T
15V A.C.
TX
302 665B
1
2
3
BATTERY
BELL
D E T
BRIGADE
ASPI
GATING
3
RESET
+
Fuse
Battery
12 Volt
7 AH
Z O N E
BATT.
Shows
Panel
Mounting
Keyholes
Black
Red
Knockouts
To Battery
Bell
Bell
Detectors
Mains Earth
to Front
Panel
Front Panel
+
BZ1
U6
F 1
0.8A
F2
0.8A F 1
AC IN
Brigade Board
( If Fitted )
Relay Board
( If Fitted )
Link Pins 5,6 if
Board NOT Fitted
Figure 3: Internal Layout
3.4
Detector Circuits
The detector circuit accepts smoke detectors, heat detectors or manual call points that will cause the
panel to go into alarm within one second. Detector types used are subject to the compatibility
limitations as described in section 4.
Devices such as smoke detectors, which signal by increasing line current, can, when signalling, go
through “gating” or Alarm Verification. As such, when a detector goes into alarm, it is reset and not
monitored for two to three seconds, if an alarm is still present after this time, the system will then latch
into alarm. This function may be de-selected if not required by removing link K1-2 (GATING). See
section 5 for details.
Important:
Detector
line voltage
is 22V (open circuit). Current signalling detectors ( smoke or electronic
heat ) must be rated for 24V operation.
