Coolcentric CDU-AC5 Manuel d'installation Page 30
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Noté. / 5. Basé sur avis des utilisateurs
CDU Installation Guide Page 30
Cooling Distribution Unit
OPERATION (continued)
Screen
/ Level
Title
Options & (Info)
6-2-5
Pump DP delay
Default 80 secs [adj. 1 to 300 secs] (time delay prior to pump low flow alarm)
6-2-6
DOL DP set point
Default 2 Bar [adj. 1 to 5 bar] (pump differential pressure set point when DOL)
6-2-7
PV c/o interval
Default 7 days [adj. 1 to 30 days] (pump/valve duty sharing period)
6-2-8
PV c/o time
Default 03:00 hrs [adj. 00:00 to 23:59 hrs] (time of day for pump/valve duty
sharing change over)
6-2-9
Pump c/o delay
Default 5 secs [adj. 1 to 10 secs] (dead time between pump change over)
6-2-10
Max ctrl.press
Default 4 Bar [adj. 1 to 8 bar] (max pump speed control loop pressure)
6-2-11
Min pump speed
Default 10 % [adj. 0 to 50 %] (set minimum pump speed)
6-2-12
Over pressure
6-2-12-1 Set point – Default 7.5 Bar [adj. 2 to 7.5 Bar]
6-2-12-2 Action – Default Alarm [adj. alarm only / shutdown]
6-2-13
Inverter startup
6-2-13-1 Speed – Default 0 % [adj. 0 to 100 %] (initial start speed)
6-2-13-2 Period – Default 0 secs [adj. 0 to 30 secs] (delay prior to pump
speed DP loop becoming operational)
6-2-14
Fault attempts
Default 1 [adj. 0 to 5] (no. of inverter restarts before fault recognition)
6-3
Heat exchanger
6-3-1
Set point
Default 18.0 °C [adj. 10 to 25 °C] (water supply temperature to racks)
6-3-2
Valve runtime
Default 40 secs [adj. 10 to 180 secs] (valve motor run time for control loop)
6-3-3
Control mode
Default Fixed SP + Dew Point override [adj. Fixed SP, Fixed SP + DW
O/R, DW tracking]
6-3-4
Dew point offset
Default 2 °C [adj. 1 to 3 °C] (maintains set point threshold above dew point)
6-3-5
CV loop refresh
Default 5 secs [adj. 1 to 30 secs] (scan period for valve position control)
6-3-6
Demand/act error
Default 10 % [adj. 0 to 50 %] (difference between demand & actual valve
position prior to alarm / change over)
6-3-7
Valve check int
Default 15 min [adj. 1 to 120 mins] (scan period for valve position monitoring)
6-3-8
Loop settings
6-3-8-1 Prop band – Default 17.0°C [adj. 1.0 to 25 °C]
6-3-8-2 Integral reset – Default 400 secs [adj. 0 to 999 secs]
6-3-9
Sec low temp
Default 2.0 °C [adj. 1 to 10 °C] (temp. alarm threshold below set point)
6-3-10
Sec high temp
Default 2.0 °C [adj. 1 to 10 °C] (temp. alarm threshold above set point)
6-3-11
Sec temp hys
Default 1.0 °C [adj. 0.5 to 5 °C] (low/high alarm reset threshold)
6-3-12
Sec high temp
DW
Default 20 °C [adj. 15 to 25 °C] (high alarm threshold when dew point
tracking)
6-4
Primary
6-4-1
Prim flow delay
Default 5 mins [adj. 1 to 30 mins] (time delay prior to alarm)
6-4-2
Prim low temp
Default 4 °C [adj. 2 to 10 °C] (low temp. alarm threshold)
6-4-3
Prim high temp
Default 11 °C [adj. 6 to 25 °C] (high temp. alarm threshold)
6-4-4
Prim temp hys
Default 1 °C [adj. 0.5 to 5 °C] (low/high temp. alarm reset threshold)
6-4-5
Prim filter dirty
Default 0.6 Bar [adj. 0.2 to 1 Bar] (diff. pressure alarm threshold)
6-4-6
Prim filter hys
Default 0.2 Bar [adj. 0.1 to 0.5 Bar] (alarm reset threshold)
6-4-7
Prim filter delay
Default 60 secs [adj. 5 to 7200 secs] (time delay prior to alarm)
6-5
Offsets
6-5-1
Prim temp T1
Default 0 °C [adj. +/-10 °C] (sensor calibration)
6-5-2
Sec. temp T2a
Default 0 °C [adj. +/-10 °C] (sensor calibration)
6-5-3
Sec. temp T2b
Default 0 °C [adj. +/-10 °C] (sensor calibration)
6-5-4
Room. temp T3
Default 0 °C [adj. +/-10 °C] (sensor calibration)
6-5-5
Room RH
Default 0 % [adj. +/-10 %] (sensor calibration)
6-5-6
Pump PS1
Default 0 Bar [adj. +/-1 Bar] (sensor calibration)
6-5-7
Pump PS2
Default 0 Bar [adj. +/-1 Bar] (sensor calibration)
6-5-8
Prim filter PS3
Default 0 Bar [adj. +/-1 Bar] (sensor calibration)
6-5-9
Prim filter PS4
Default 0 Bar [adj. +/-1 Bar] (sensor calibration)
6-6
Manual period
Default 15 min [adj. 1 to 120 mins] (time delay before system reverts to auto)
6-7
Event delay
Default 20 min [adj. 1 to 120 mins] (alarm suppression on start up)
6-8
Flood operation
6-8-1
Flood op. switch
Default Alarm [adj. alarm only / shutdown] (unit flood tray sensor operation)
*** SI UNITS ***
- Models: CD150W4 1
- CD150W3 1
- ABOUT THIS DOCUMENT 2
- GENERAL STATEMENT 2
- CONTENTS 3
- CONTENTS (continued) 4
- SAFETY INSRUCTIONS 5
- INTRODUCTION (continued) 8
- TECHNICAL DATA (continued) 10
- 13
- INSTALLATION (continued) 14
- Cooling Distribution Unit 16
- COMMISSIONING (continued) 18
- OPERATION (continued) 26
- MAINTENANCE (continued) 40
- TROUBLESHOOTING 41
- TROUBLESHOOTING (continued) 42
- SPARE PARTS 47
- SPARE PARTS (continued) 48
- SCHEMATICS 51
- L/M (10.6USgpm) 55
- WARRANTY & SUPPORT 57
- Disposals Procedure 59
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