Daikin CDK25AZVMB [53/62] Controller

17 pCO

CONTROLLER

BACKGROUND

To respond to the increasing market demand for accurate control, all Daikin chillers will be equipped

with the newest pCO

controller.

FUNCTIONS

Advanced pCO

DDC controller offering following functions:

• Schedule timer: Four timer groups can be used, in which up to nine time related actions can be

defined. Days appointed to a timer group will follow the time related action settings of that group.

Holiday periods that can also be entered by date. All days in such periods will work according to the

settings in the holiday group, which is defined in the same way as the timer groups. (Note: for this

to work correctly the internal time, date and day need to be set correctly)

• Floating setpoint: adjustment of setpoint according to ambient temperature

• Free cooling: feature that allows the unit to be integrated into a free cooling application

• Double evaporator pump: enables the use of two evaporator pumps (together or as a backup)

• Lead-lag of compressors: the compressors can be set for lead-lag operation

• Manual pump on: the facility to turn the pump on manually if the unit is off, in order to test

the pump operation

• Time and date information: time, date and day can be set

• Daily pump on: the facility to turn on the pump automatically each day at a set time to avoid

pump blockage as a result of its being idle for a long time

• Changeable digital inputs/outputs: several digital inputs/outputs can be given a series of

functions depending on user preference.

Changeable digital inputs are: remote on/off, remote cooling/heating, dual setpoint and limit

capacity.

Changeable digital outputs are: heating mode/cooling mode output signal, 100% unit signal and

condenser pump (facility to steer condenser pump).

• Temperature probe fine tuning: the facility to adjust the water temperature probes in order

to fine tune the measurement

• Advanced freeze-up control: either normal freeze-up alarm can be used or the unit can be

allowed to go into freeze-up several times in a certain time period without generating an alarm,

the unit will only cease operating for a certain time.

• Extended alarm history: up to 20 alarms can be reviewed

• Languages: 5 languages can be selected on the controller (English, German, French, Italian,

Spanish)

pCO

controller

00225•New products•01-12 09-11-2001 11:18 Pagina 53