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TM SmartCool One 5057724 v1.0_08_2022
Password Protection
The control system integrity shall be maintained by restricting access with a password PIN number.
Networking
ModBus can be used to connect up to 8 units to offer intercommunication and Run / Standby control.
For further details, please contact Airedale Controls.
Run/Standby Operation
The controller enables units to operate in run/standby mode, with up to 8 units networked together, without the need for
additional hardware or controllers. Standby units are configured to start when the run unit has a critical alarm.
Temperature Control
A temperature sensor shall be mounted in the return air side of the unit to sense the return dry bulb condition. The
temperature sensor shall be an NTC type thermistor with an accuracy of not less than +/ - 5% at 25°C (77°F) at the
sensor. The microprocessor shall sense the return air conditions and maintain the return air temperature.
The microprocessor shall monitor and display the following values as a minimum:
● Supply/Return Air Temperature
● Supply/Return Air Humidity
● Fan Run Hours
The maintenance of key components such as air filters shall be monitored via a service indicator which visually
demonstrates the status relative to the component service intervals.
Alarm Log
The controller shall log and allow viewing of not less than the last 200 conditions recorded in descending chronological
order through the keypad display. The standard display keypad shall visually display operating alarms, however, as an
optional extra, a display keypad with audible alarms is available.
Duty Rotation
Networked units are configured to duty rotate, providing equal hours run of fans.
When adding to an existing controls scheme, please consult Airedale Controls to ensure strategy
compatibility.
NOTE
Please specify preferred 4 digit Display Screen PIN at time of order.
NOTE
Remote On/Off
Screened cable should be used for the Remote ON/OFF to prevent negative effects to EMC levels. Terminals for
interlocking are provided.
Fire Shut Down
Terminals for interlocking are provided to shut down the unit in the event of fire.
Fan Hours Run Log & Reset
This allows the user to monitor the running times of the fans and reset after maintenance. An hours run log or visual
service indicator shall be provided.
Fan Speed Control
Fan speed control is set easily via the display keypad and can be incrementally increased or decreased to meet on site
airflow and external static pressure requirements.
Filter Change Alarm
Filter change is managed by the software, and is based on fan(s) hours run with an alarm being generated when the
pre-set run time limit has been exceeded. The set-point value shall be adjusted to suit each application and is factory set
to 4000 hours.
Filter Change Switch
A filter change switch is available as an option. It is a differential pressure switch across the filter; if the differential
pressure is greater than the adjustable setpoint while the fan is running then the switch will trip and an alarm will be
displayed.
Waterside Differential Pressure Transducer
Due to the fact that the valves on the waterside are configured in parallel, the flow is split between the cooling coil and
the bypass leg. The bypass valve controls to unit pressure drop in order to maintain a constant pressure drop across the
unit. The pressure drop across the unit shall be measured between the inlet and outlet sides of the unit respectively. If
the system flow changes, the SmartCool unit would not be aware of the change and would continue to try and control to
the target unit pressure drop set during commissioning.
Precision Air Conditioning
SmartCool™
Introduction
