Emerson Liqui-tect MC68HC16Z1 - Manual (Page 20)

Connections and Configuration
16
3.2 Connecting Alarm Outputs
The Zone 1 and Zone 2 alarm outputs, found in the top right corner
of the Liqui-tect panel, provide a contact output for a leak and a
cable break for each zone. As an example, the outputs may provide
alarms to an auxiliary alarm panel or building management sys-
tem. To determine the proper wire size, see Table 4 - Wiring spec-
ifications.
A wiring key beside each terminal block indicates whether the con-
nected output is wired for Normally Open (NO) or Normally Closed
(NC).
An alarm relay wired as an unsupervised point (energized for
alarm) must be wired to the Normally Open (NO) and Common (C)
contacts.
An alarm relay wired as a supervised point (de-energized for alarm)
must be wired to the Normally Closed (NC) and Common (C) con-
tacts.
To connect an output:
1. Disconnect electrical power to the Liqui-tect panel.
2. If necessary, remove a conduit knockout to permit wire entry into the Liqui-tect panel enclosure.
3. Bring the wire(s) into the Liqui-tect panel enclosure through a conduit knockout or access slot.
4. Loosen the appropriate screw and slip the stripped end of the wire into the terminal block.
5. Tighten the screw until it holds the wire snugly.
3.3 Connecting to a Building Maintenance System or External Alarm System
Two analog output connector blocks permit the user to connect aux-
iliary notification equipment to monitor the distance of the leak and
cable fault alarms. The terminal blocks are on the right side of the
Liqui-tect panel printed circuit board, just above the leak detection
cable connectors. To determine the proper wire size, see Table 4 -
Wiring specifications.
To connect an input:
1. Disconnect electrical power to the Liqui-tect panel.
2. If necessary, remove a conduit knockout to permit wire entry
into the Liqui-tect panel enclosure.
3. Bring the wire(s) into the Liqui-tect panel enclosure through a conduit knockout or access slot.
4. Loosen the appropriate screw and slip the stripped end of the wire into the terminal block.
5. Tighten the screw until it holds the wire snugly.
R17
DS4
K4
NC
NC
NO
NO
C
C
NC
NC
NO
NO
C
C
Key to
output
status
Alarm outputs
Zone 1
Zone 2
R18
lout Cable 1
C42
TB4
TB5
C38
lout Cable 2
+
-
+
-
Analog
output
connectors