Hydromatic II Chiller Operation Manual

Table Of Contents

Page 11

Freon sensor type

Sets the type of sensor connected to the high and low Freon pressure input. If only a

switch is installed, the parameter is set for switch and JP12 and JP 13 must have jumpers

installed.

If the parameter is set for gauge or both, JP12 and JP 13 jumpers must be removed. The

following options will also become available:

Hi. Pressure maximum PSI

Hi. Pressure 0 PSI voltage

Low pressure maximum PSI

Low pressure 0 PSI voltage

This system is compatible with standard pressure sensors operating in the 0 to 5 VDC

range. These options allow independent setting of the pressure sensor connected. Set the

maximum PSI parameter to the maximum pressure the sensor measures. Set the 0 PSI

voltage to the 0 PSI reference voltage specified by the sensor manufacturer.

Water Sensor Type

Sets the type of sensor connected to the water pump LPS and HPS terminals.

The following options will become available if “Gauge” or “Both” are selected:

LPS Pressure maximum PSI

LPS Pressure 0 PSI voltage

HPS pressure maximum PSI

HPS pressure 0 PSI voltage

This system is compatible with standard pressure sensors operating in the 0 to 5 VDC

range. These options allow independent setting of the pressure sensor connected. Set the

0 PSI voltage to the 0 PSI reference voltage specified by the sensor manufacturer. Set the

maximum PSI parameter to the pressure the sensor measures at 4 volts above the 0 PSI

reference voltage. This will typically be the maximum PSI reading for the sensor used.

System units

Sets the system units for metric (°C) or US standard (°F)

Pump Station Delay

Sets the minimum length of time needed to respond to an open flow switch on the pump

relay board.

Reset parameters

Reset parameters to factory default values. (If Reset Parameters is used on any unit it

should be repeated on all other units in system. The system should then be set up from the

beginning. See the initial configuration section for details.)