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Installation Electrical
Control Power Supply
A fused, panel-mounted control power transformer is
standard. Replacement fuse information is listed on the
"Fuse Schedule" decal located adjacent to the transformer
inside the control box.
External Contacts and Peripherals
The following peripheral control features and program
logic come standard on all CICD compact chillers.
Designated terminals on the field connection terminal
strip in the control panel are provided for field connection
of each. Consult the field wiring diagram and wiring
schematic diagram provided in this manual for the
connection points. The wiring schematic diagram is also
attached to the inside of the control panel door.
Required Chilled Water Flow Switch
WARNING
Unexpected Chiller Start!
Failure to follow instructions could cause the chiller to
start unexpectedly which could result in equipment or
property damage. An external source (EMS, time clock
or any other means) should not be allowed to bring on
a pump that would trigger the flow switch to start the
chiller. The flow switch is meant to act as a safety
switch and not a start/stop mechanism.
The CICD controller has a required input that accepts a
contact closure from a proof-of-flow device such as a flow
switch or other factory approved flow proving device.
When this input does not prove flow within a fixed time
relative to transition from enabled to run modes of the
chiller, or if the flow is lost while the chiller is in the running
mode of operation, the chiller will be prohibited from
running. The installer must provide and install this flow
proving device. Failure to provide this flow proving device
voids unit warranty.
32
Condenser Water Loss of Flow Protection
The CICD controller logic will sense a loss of flow through
the condenser. No condenser water flow switches are
necessary with the standard standalone CICD controller
configuration.
Required Pump Control
CICD units have one dry contact relay which is required to
start the chilled water pump. These chillers also have one
dry contact relay to start a condenser pump. These
features are standard but only the chilled water pump
control is required.
Remote Off/Auto
The CICD controller has an input that accepts a contact
closure from a remote device such as a toggle switch that
can enable or disable the chiller to run. It would be wired
in series with the Off/Auto switch located on the control
panel door. This feature is standard but not required.
Remote Alarm
CICD units have one dry contact relay to indicate with a
remote light or bell or other device that at least one
compressor in the unit has been locked out for whatever
reason and needs attention. This feature is standard but
not required.
CG-SVX044B-EN
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