Airedale DeltaChill FreeCool 110kW - 1080kW - Manual (Page 27)

Chillers DeltaChill™ Air Cooled and FreeCool
27 Chiller Technical Manual 7267818 V1.4.0_04_2014
Introduction
Alarm Handling
The controller logs and allows viewing of the last 100 conditions recorded in descending chronological order through the
keypad display.
The following conditions will be detected, triggering a visual display:
Common for both circuits (Multiple Circuit units):
•
Low Supply Temperature
• Emergency Stop
• Water Flow
• Pump(s) status
• Pump(s) remote start
• Volt Free Contact Alarm Indication
Individual for each circuit:
• Individual alarms will isolate the affected circuit only.
• Compressor Trip
• Low Suction Pressure for each circuit
• High Liquid Pressure for each circuit
• Low Pressure Switch
• Compressor Overload
• High Compressor Discharge Temperature
Optional Features
Networking
A Local Area Network (LAN) can be used to connect a number of chiller controllers to offer intercommunication and
sequence control. There is also the facility to allow the connection of either a computer or modem for local or remote
monitoring. For further details, please contact Airedale.
CAUTION
When adding to an existing network, please consult Airedale to ensure strategy compatibility.
Unit Remote ON/OFF
Disables/Enables the Chiller remotely.
Compressor Anti Cycle Control
Automatic via the Microprocessor.
Compressor Load Limit
Limits the condensing pressure by unloading above 35 Barg.
Limits the evaporating pressure by unloading at the minimum pressure set point, which is, adjustable depending on
system glycol content.
Pump(s) Remote ON/OFF
Disables/Enables the pump(s) remotely.
Remote Setback Temperature Set point Switch
A setback set point for supply water temperature can be selected to suit summer/winter conditions or night setback.