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ESIE05-07 Functional Control for a Standalone Unit

Part 2 – Functional Description 2–21

Double thermostat

control

This mode regulates on both inlet water sensor of the evaporator and the condenser.

This is only applicable on water-cooled chillers.

The same functions are used as in inlet condenser control and inlet evaporator control.

Load-up will be requested when both functions request a load-up and the load-up time = 0. This is an

"AND" function.

Load-down will be requested when one of the functions requests a load-down and the load-down time

= 0. This is an "OR" function.

Remote cooling or

heating

Only applicable on water-cooled units.

This function allows switching from cooling to heating mode trough a remote switch connected to one

of the digital inputs.

For details about the possible settings of the digital inputs refer to the chapters about the changeable

digital inputs and the service menu.

Dual setpoint This function allows switching between two set-points, either with a switch or with the schedule timer.

The actual setpoint can also be influenced by the floating setpoint function.

The set-points can be set in the according menu, refer to the chapter about the set-points menu.

For details about the possible settings of the digital inputs refer to the chapters about the changeable

digital inputs and the service menu.

Thermostat This function is only available for single circuit evaporator-less units (ER).

This function generates a load-up/-down request according to the temperature from the thermostat

temperature sensor. This thermostat control is the same as normal outlet evaporator water control.

In this mode freeze-up prevention & freeze-up safety are disabled, but high pressure setback and

capacity limitations will remain active.

ESIE05-07.book Page 21 Wednesday, October 11, 2006 10:42 AM