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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-SVX044F-EN
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