12 SYSTEM CUT-OUT JUMPER FOR EMERGENCY SHUT-DOWN
The unit is completely factory wired with self-contained controls to run without using external
system cut-out. When external system cut-out is used, remove the jumper between terminal 5 and
6 and use NC dry contact of field provided system cut-out relay.
Figure 13 - Terminal Block with System Cut-Out
The system cut-out terminal on the terminals strip is for connection to a “panic button” or EPO
Switch when emergency shut-down is required. The system cut-out jumper shall only be
replaced by separate dry contact for each unit and NO EXTERNAL SOURCE OF POWER SHOULD
BE INTRODUCED AT THIS POINT. The EPO relay must be installed in the unit control panel to
minimize voltage drop in control circuit.
Remote ON/OFF relay shall not be used for emergency shut-down purpose. This relay is design to
provide systematic shut down by the controller programming. Remote ON/OFF relays can be disabled
from controller programming and unit may not shut-down in case of emergency.
13 REMOTE ALARMS
One Alarm Relay with a set of dry contact is provided for remote connection whenever the unit alarm is
energized. Default setting for this alarm relay is programmed to be energized for global alarm however;
it can be changed to selectable alarm to customize for specific alarms only. See controller guide for
more detail on how to program this relay for selectable alarms.
If unit is provided with extra relays, see unit wiring diagram and submittal for detail.
If the unit is provided with condensate overflow sensor, the unit mounted control panel includes a
condensate probe module. The condensate probe sensor shall be shipped loose for field installation.
Condensate probe sensor shall be located underneath the unit where water may collect to sense any
condensate overflow. To check the operation of the probe, submerse it in a cup of water. The
condensate alarm should energize.
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