W W W . B A L T I M O R E A I R C O I L . E U
OPERATING INSTRUCTIONS
General Information
To ensure dependable, trouble-free, efficient operation of the thermal storage units, each system is provided with
factory installed, operating control assemblies. During normal operation a solid layer of ice at the top of the tank
will not form. However, should such a layer form due to unforeseen and unwanted operational circumstances, the
low level alarm can be activated. In such case melt out the ice completely.
Start-Up and Commissioning Procedures
For internal melt applications (TSU-M), the ice quantity is measured by measuring the difference in water level in
the tank that occurs due to ice build-up. Ice has a lower density than water, and therefore the water level increase
will be proportioned to the ice quantity inside the tank. The Analogue Ice Thickness Transmitter is factory installed
on the tank and consists of two major components:
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Transmitter box, for power supply and passive analogue 4-20 mA output signal.
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A guided wave radar sensor installed in a PVC tube.
In case the sensor is exposed to subfreezing temperatures (outside installation), the sensor and connected PVC
piping must be heat traced.
TANK FILLING AND ICE LOGIC CALIBRATION
The sensor is factory mounted and wired to the transmitter box, which is located at the connection end of the tank.
A “zero level” adjustment (=calibration) is needed at start-up. To follow the procedure for the correct calibration,
please refer to chapter: “Ice Logic™ Ice Quantity Controller”.
Make sure there is no ice left in the tank. Fill the Ice Thermal storage unit according to following instructions:
1. Open the ball valve so that the water can enter the water leve sensor. The water level in the sight tube must be
below the 0% level.
2. Use a hose through the hatch opening to fill the tank to the top of the coil. Water level must remain below 0%
level indicated on the label.
CAUTION
DO NOT OVERFILL
3. Continue to fill the tank slowly with a minimum of water turbulence until the water level in the sight tube
corresponds with the zero water level indicated on the label.
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TSU-M
3
3 Operating Instructions
3 Operating Instructions
