Coolcentric CDU-AC5 Manual de instalación descargar pdf (Pagina 29)

CDU Installation Guide Page 29

Cooling Distribution Unit

OPERATION (continued)

Screen

/ Level

Title

Options & (Info)

Service (screen 4)

4-1

Force pump c/o

(change pump from 1 to 2 or 2 back to 1 – OK to initialise)

4-2

Force valve c/o

(change valve from 1 to 2 or 2 back to 1 – OK to initialise)

4-3

Overrides

(no automatic function - for full manual control of all functions)

4-3-1

Auto/man mode

Automatic / Manual (set unit to manual or automatic operation)

4-3-2

Digital outputs

0000000000 (manually set digital output status – see Section 5.8)

4-3-3

AO1 – inverter

0 to 100 % (manually set pump speed)

4-3-4

AO2 – valve 1

0 to 100 % (manually set valve 1 position)

4-3-5

AO3 – valve 2

0 to 100 % (manually set valve 2 position)

4-4

Manual Control

(for manual control of some functions while still running in automatic mode)

4-4-1

Secondary

pumps

4-4-1-1 P1 inverter (set pump speed)

4-4-1-2 P2 inverter (set pump speed)

4-4-1-3 P1 DOL (switch to Manual for ON)

4-4-1-4 P2 DOL (switch to Manual for ON)

4-4-2

Heat exchanger

4-4-2-1 Valve 1 (set valve position)

4-4-2-2 Valve 2 (set valve position)

4-4-3

Fill pump P3

Automatic/Manual (switch to Manual for ON)

4-4-4

Warning fault

Automatic/Manual (simulate fault on customer warning relay)

4-4-5

Alarm fault

Automatic/Manual (simulate fault on customer alarm relay)

4-5

Suppress Events

(resets alarm delay timer (scr.6-7) to stop nuisance alarms breaking through

screens during manual overrides – OK to initialise)

4-6

Reset Run Hours

4-6-1

Pump P1

(set pump 1 run hours to zero – OK to initialise)

4-6-2

Pump P2

(set pump 2 run hours to zero – OK to initialise)

4-6-3

Valve V1

(set valve 1 run hours to zero – OK to initialise)

4-6-4

Valve V2

(set valve 2 run hours to zero – OK to initialise)

4-6-5

All

(set all pump & valve run hours to zero – OK to initialise)

4-7

Defer Active Event(s)

4-7-1

Period

Default 24 Hours [adj. 24, 48. 72 hrs] (set alarm defer period)

4-7-2

Initiate

(OK to initialise)

Time control (screen 5)

5-1

Date & time

dd/mm/yy hh:mm:ss (set date & time - 24 hour clock)

5-2

Date format

dd/mm/yy or mm/dd/yy

5-3

Daylight saving

5-3-1

Adjustment

Europe, Manual, No DST or N. America

5-3-2

Manual dates

--/-- --/--

Parameters (screen 6)

SI U N I T S

6-1

Reservoir

6-1-1

Fill pressure

Default 0.5 Bar [adj. 0.5 to 1 bar] (shut off threshold for fill pump)

6-1-2

Fill pump run

Default 3 mins [adj. 1 to 15 mins] (run time for float switch to make or fill

pressure to be achieved, prior to alarm)

6-1-3

Float switch delay

Default 4 secs [adj. 1 to 30 secs] (reservoir float switch de-bounce time)

6-2

Secondary pumps

6-2-1

No of RDHx

Default 1 [adj. 1 to 6]

6-2-2

DP setpoints

(pump differential

pressure set points for

pump speed control

loop)

6-2-2-1 Sys diff 1 RDHx – Default 2.1 Bar [adj. 0.5 to 4 bar]

6-2-2-2 Sys diff 2 RDHx – Default 2.3 Bar [adj. 0.5 to 4 bar]

6-2-2-3 Sys diff 3 RDHx – Default 2.5 Bar [adj. 0.5 to 4 bar]

6-2-2-4 Sys diff 4 RDHx – Default 2.7 Bar [adj. 0.5 to 4 bar]

6-2-2-5 Sys diff 5 RDHx – Default 2.9 Bar [adj. 0.5 to 4 bar]

6-2-2-6 Sys diff 6 RDHx – Default 3.1 Bar [adj. 0.5 to 4 bar]

6-2-3

DP loop refresh

Default 10 [adj. 5 to 120 secs] (scan period for pump speed control loop)

6-2-4

Pump DP hys

Default 0.5 Bar [adj. 0.1 to 3 bar] (threshold for pump low flow alarm)

*** SI UNITS ***

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Coolcentric CDU-AC5 Manual de instalación Pagina 29

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