dixell Ichill 260L_D DUO User manual

1592015820 User Manual IC200L/D DUO rel 1.0
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User Manual
Ichill 260L_D DUO
Ichill 261L_D DUO
(Firmware version 1.9)

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INDEX
1. GENERAL FEATURES..............................................................................................8
1.1 Main Function................................................................................................................................................ 8
2. ICHILL 260/261L_D FEATURES .............................................................................10
3. USER INTERFACE ..................................................................................................11
4. REMOTE KEYBOARD.............................................................................................15
5. FIRST INSTALLING.................................................................................................15
6. WIRING CONNECTIONS.........................................................................................16
7. ANALOG AND DIGITAL OUTPUT CONFIGURATION ...........................................26
8. PROGRAMMING WITH THE “HOT KEY 64”.........................................................31
9. PROGRAMMING USING THE KEYBOARD............................................................31
10. CHILLER / HEAT PUMP SELECTION.....................................................................36
11. HOW TO SWITCH ON / SWITCH OFF THE UNIT...................................................37
12. SWITCH ON / SWITCH OFF THE CONDENSING UNIT BY DIGITAL INPUT.........37
13. DISPLAY LAYOUT...................................................................................................38
14. DISPLAY CONFIGURATION...................................................................................39
15. DISPLAY INFORMATION........................................................................................41
16. FUNCTION MENU “ M” KEY...................................................................................42
16.1.1 Compressor overload alarm; manual reset................................................................................................43
16.1.2 Compressor overload alarm; manual reset with password.........................................................................43
17. ENERGY SAVING....................................................................................................48
17.1 Energy Saving Activation By Digital Input..................................................................................................48
17.2 Energy Saving Time Table With Rtc............................................................................................................48
18. DYNAMIC SETPOINT ..............................................................................................49

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19. COMPRESSOR REGULATION ...............................................................................51
19.1 Compressor Security Time...........................................................................................................................51
20. CHILLER / HEAT PUMP REGULATION..................................................................51
20.1 Parameter Description..................................................................................................................................51
20.2 Proportional Regulation...............................................................................................................................52
20.3 Neutral Zone Regulation...............................................................................................................................53
21. COMPRESSORS MANAGEMENT...........................................................................54
21.1 Compressors Start- Up.................................................................................................................................54
22. COMPRESSORS ROTATION..................................................................................56
23. CAPACITY STEP CONTROL...................................................................................56
23.1 Minimum Load Start- Up.............................................................................................................................58
23.2 Intermittent Solenoid Valve for Screw Compressor ....................................................................................58
24. COMPRESSOR INVERTER CONTROLLED...........................................................58
24.1 Inverter Compressor In Heat Pump And External Temperature...............................................................62
25. COMPRESSOR RACK.............................................................................................62
26. COMPRESSORS WITH DIFFERENT CAPACITY...................................................63
27. CIRCUIT MANAGEMENT: SATURATION OR BALANCING..................................64
28. PUMP DOWN ...........................................................................................................64
29. UNLOADING............................................................................................................66
29.1 High Temperature Of The Evaporator Water Inlet ....................................................................................66
29.2 Condenser High Pressure, Condenser High Temperature Or Evaporator Low Pressure..........................66
29.3 Low Temperature Of The Evaporator Water Outlet...................................................................................67
30. SOLENOID VALVE FOR LIQUID INJECTION.........................................................67
31. EVAPORATOR WATER PUMP / SUPPLY FAN (AIR/AIR UNIT)............................67
31.1 Evaporator Pump Group..............................................................................................................................68
31.2 Modulating Evaporator Water Pump ..........................................................................................................68

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32. WATER PUMP OF THE CONDENSER ...................................................................69
32.1 Condenser Pump Group...............................................................................................................................70
33. CYCLIC OPERATION OF THE WATER PUMPS ....................................................70
34. HOT START .............................................................................................................71
35. LOAD MAINTENANCE ............................................................................................71
36. CONDENSER FAN REGULATION..........................................................................71
36.1 Output Step Rele’ Condenser Fan................................................................................................................72
36.2 Pwm Output For Fan Control......................................................................................................................73
36.3 Condensing Unit: Common Or Separate Condenser...................................................................................73
36.4 Proportional Regulation Of Condenser Fans...............................................................................................73
36.5 On/Off Regulation Of Condenser Fans........................................................................................................74
36.6 Pre-Ventilation And Post-Ventilation...........................................................................................................74
37. ANTI FREEZE HEATERS, INTEGRATION HEATING OR BOILER........................75
38. AUXILIARY RELAYS...............................................................................................77
39. AUXILIARY PROPORTIONAL OUTPUTS...............................................................78
40. DEFROST CYCLE....................................................................................................81
40.1 Automatic Defrost Procedure.......................................................................................................................81
40.2 Other Information About The Defrost.........................................................................................................82
40.3 Forced Defrost ..............................................................................................................................................83
40.4 Combined Defrost.........................................................................................................................................83
40.5 Manual Defrost.............................................................................................................................................83
40.6 Defrost In Unit With Two Circuits...............................................................................................................83
40.6.1 Start defrost in unit with common condenser............................................................................................83
40.6.2 End defrost in unit with two condenser ....................................................................................................83
40.7 Defrost With Condenser Fan Procedure......................................................................................................84
40.8 Defrost Parameter Description.....................................................................................................................84
40.9 Defrost Dynamic Set Point............................................................................................................................86
41. PRODUCTION OF SANITARY HOT WATER..........................................................87

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41.1 Anti-Legionella Function..............................................................................................................................89
41.2 Water Pumps Management..........................................................................................................................90
41.3 Sanitary Water Second Set Point .................................................................................................................91
41.4 Sanitary Hot Water Production: Valves In Water Circuit ___ Fs01=1 (Air/Water, Water/Water Unit)...91
41.4.1 - Sanitary hot water operation when the unit is producing hot water .........................................................91
41.4.2 - Sanitary hot water operation when the unit is producing cold water........................................................92
41.5 Sanitary Hot Water Production: Valves In Gas Circuit ___ Fs01=2 (Air/Water, Water/Water Unit).......92
41.5.1 Sanitary hot water operation when the unit is producing hot water............................................................92
41.5.2 - Sanitary hot water operation when the unit is producing cold water........................................................92
42. SOLAR PANEL MANAGEMENT .............................................................................94
42.1 Solar Panel In Sanitary Hot Water ..............................................................................................................94
42.2 Solar Panel In Heating Mode........................................................................................................................94
43. UNIT WITH HYBRID EXCHANGERS (AIR / WATER UNIT)....................................95
44. GEOTHERMAL FREE COOLING ............................................................................96
44.1 Fan speed control if compressors and free cooling are used for cooling (CF97=3)......................................98
45. RECOVERY FUNCTION..........................................................................................98
45.1 Unit With Two Separate Idraulic Circuits...................................................................................................98
45.2 Unit With Two Idraulic Circuit Working In Parallel..................................................................................99
46. CONDENSER TEMPERAURE / PRESURE CONDITION TO ENABLE/DISABLE
THE RECOVERY CYCLE ...............................................................................................100
46.1 Recovery Disabled.......................................................................................................................................100
46.2 Recovery Enabled.......................................................................................................................................101
46.3 Note About Recovery Enabled/Disabled....................................................................................................101
47. OPERATION RELATED TO THE REAL TIME CLOCK.........................................101
47.1 Real Time Clock Disabled By Digital Input ...............................................................................................101
47.2 “Only supply fan” working mode”.............................................................................................................101
48. MESSAGES - ALARM CODES.............................................................................101
48.1 Automatic / Manual Alarm Description.....................................................................................................101
C1Pd - C2Pd – compressor oil differential pressure..............................................................................................115
49. AUTOMATIC TO MANUAL ALARM PROCEDURE..............................................120

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49.1 Alarm..........................................................................................................................................................121
49.2 Alarm: Circuit Alarm.................................................................................................................................122
49.3 Alarm: Compressor Alarm.........................................................................................................................123
50. TABLE OF THE PARAMETERS............................................................................124
51. BLACK-OUT...........................................................................................................145
52. INSTALLING AND MOUNTING.............................................................................145
52.1 ICHILL 200 L FORMAT: Panel cut- out ..................................................................................................145
52.2 ICHILL 200 L FORMAT: metal front frame............................................................................................145
52.3 Ichill 200 Din Format SERIES...................................................................................................................146
52.4 Vertical boards Vi620 – panel cut-out........................................................................................................146
53. ELECTRICAL CONNECTIONS..............................................................................147
54. ACCESSORIES......................................................................................................147
55. TECHNICAL DATA................................................................................................149

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General advice
PLEASE READ BEFORE USING THIS MANUAL
This manual is part of the product and should be kept near the instrument for easy and quick reference.
The instrument shall not be used for purposes different from those described hereunder. It cannot be
used as a safety device.
Check the application limits before proceeding
The technical data and information in the user manual could change without obligation to notice.
SAFETY PRECAUTIONS
Check the supply voltage is correct before connecting the instrument.
Do not expose to water or moisture: use the controller only within the operating limits avoiding sudden
temperature changes with high atmospheric humidity to prevent formation of condensation
Warning: disconnect all electrical connections before any kind of maintenance.
The instrument must not be opened.
In case of failure or faulty operation send the instrument back to the distributor or to “Dixell company with
a detailed description of the fault.
Consider the maximum current which can be applied to each relay (see Technical Data).
Ensure that the wires for probes, loads and the power supply are separated and far enough from each
other, without crossing or intertwining.
Fit the probe where it is not accessible by the end user.
In case of applications in industrial environments, the use of mains filters (our mod. FT1) in parallel with
inductive loads could be useful.

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1. GENERAL FEATURES
IC260L_D/261L_D is an electronic controller for chiller unit applications having one or two circuits:
Air/air
Air/water
Water/water
Condensing unit
Additional features :
Heat pump with gas reversibility
1.1 MAIN FUNCTION
Chiller management:
One circuit up to 4 compressors
Double circuit up to 6 compressors
Screw compressors
Compressor start up:
Direct
Part winding
Star - delta
Capacity step control:
Continuous control
Step control
Modulation control (screw compressors)
Regulation of the compressors
Working hour trade-off
Start-up trade-off
Management of two pump groups
2 pumps evaporator side
2 pumps condenser side
Pump down management
With dedicated pressure switch
Low pressure switch
Low pressure transducer
Unloading circuit
High temperature of the evaporator inlet water
High temperature of the condenser inlet water (unit with recovery)
High condensing pressure
Low evaporating pressure
Maintenance messages
Compressors
Evaporator pumps
Condenser pumps
Auxiliary relays
It is possible to configure two relays with indipendent regulation
Weekly Energy saving
Three different time bands per day (only if RTC onboard)
Energy saving enabled by digital input
Weekly ON/OFF:
Three different time bands per day (only if RTC onboard)
Dynamic setpoint:
It is possible to modify the set point according to outside temperature or a dedicated 4..20mA probe
Change over :
Automatic operative mode selection (chiller / heat pump) maccording to outside temperature
Defrost management:
Combined control temperature / pressure

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Forced defrost
Different way to enable the defrost (temperature / pressure / digital input)
Boiler:
For heating integration
Two proportional outputs for condensing fan speed control (inverter or phase cut) with configurable
signal:
PWM
0÷10Volt
4÷20mA
Four proportional control outputs 0÷10V or ON/OFF
To control the dumper
To control an external relay
Complete alarm management
Internal Data logger up to 100 events
Supervisor / monitoring
TTL output for XJ485 interface (ModBus protocol) for XWEB Dixell monitoring system

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2. ICHILL 260/261L_D FEATURES
FEATURES IC290D IC291D
OUTPUT RELAYS
10 
14 
DIGITAL INPUTS
18 configurable configurable
PROBE INPUTS
6 (NTC/PTC) configurable configurable
4 (NTC/PTC/0..5V/4..20mA) configurable configurable
PROPORTIONAL OUTPUTS
2 PWM outputs for condensing fan 
2 0÷10V or 4÷20mA for condensing fan configurable configurable
4 0÷10V configurable configurable
OTHER OUTPUTS
TTL 
Output for remote keyboard VGI890 
POWER SUPPLY
12 Vac/dc (+15%;-10%) 
24 Vac/dc (± 10%) opt opt
OTHERS
Internal RTC opt opt
Buzzer opt opt
configurable = configurable by parameter
opt = optional
= default

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3. USER INTERFACE
Meaning of the LEDs
IC260L / IC261L models
IC260L / IC261L metal front panel

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Meaning of the leds on the models VI620 - VI620S remote keyboard
KEY FUNCTION
KEY
ACTION
FUNCTION
Push and release
Show chiller set point
SetC
and heat pump
SetH
Push once In chiller or heat pump if the Energy saving or the Dynamic setpoint are enabled it shows the real
setpoint Setr, the led is blinking.
Push for 3 seconds the release Change between chiller / heat pump
During the programming: push one
time Select a parameter or confirm a value
Push once with probe label
showed on the bottom display Change between the read-out of the circuit 1 and the circuit 2 and viceversa
UP KEY
Push once Select the readings of the first circuit
Pushing once during the
programming To change the parameter code or value
Push for 1 second during the
programming 1 time shows the Pr2 programming level 2 time shows the Pr3 programming level
TASTO DOWN
Push once Select the readings of the second circuit
Pushing one time during the
programming To change the parameter code or value

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Push once Turn the chiller on, if the unit is on led is on The led is blinking if there is a power on delay or
during the pump down
Push once Turn the heat pump on, if the unit is on led is on The led is blinking if there is a power on delay or
during the pump down
Push once enter the function Menu
Push for 3 seconds To set RTC parameters (if the RTC is inside)
Pushing once during the
programming To exit from a group of parameter
KEY COMBINANTION
KEY
ACTION
FUNCTION
Push for 3 seconds together Enter the programming
In Pr3 level: push SET and the
push DOWN key Select the parameter level visibility Pr1 / Pr2 / Pr3
Push once together Exit the programming
Push 5 seconds (heat pump
with ok condition) Manual defrost
In Pr3 programming level Push
SET and then the MENU key In Pr3 defines if the parameter can be changed or not in the other levels.
LED and ICONS
ICON
LED
FUNCTION
ON Auxiliary relay #1 active
OFF Auxiliary relay #1 not active
ON Auxiliary relay #2 active
OFF Auxiliary relay #2 not active
BLINKING Defrost delay counting active
ON Defrost
OFF Defrost end
Display and Icons
ICON
MEANING / FUNCTIONNING

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Celsius degrees: ON for temperature measurements of probe values or parameters
Fahrenheit degrees: ON for temperature measurements of probe values or parameters
Bar: ON for pressure measurements of probe values, setpoint or parameters
PSI
Psi: ON for pressure measurements of probe values, setpoint or parameters
ON = compressor 1 active
Blinking = compressor 1 delay counting
ON = compressor 2 active
Blinking = compressor 2 delay counting
ON = compressor 3 active
Blinking = compressor 3 delay counting
ON = compressor 4 active
Blinking = compressor 4 delay counting
ON = compressor 5 active
Blinking = compressor 5 delay counting
ON = compressor 6 active
Blinking = compressor 6 delay counting
General alarm: blinking if there is an alarm not identified by an icon
Anti freeze heaters/ integration heating / boiler: ON if the output is on
Flow alarm/ (differential) pressure switch / supply fan thermal (air / air unit) : is blinking if
the configuration of the digital input is active
Real time clock: On when the bottom display show the RTC
ON during the programming with time based parameter value
In function menu indicates the defrost delay counting
Water pump: On if at least one of the four configurable pump group is on
Condenser fan: ON if at least one of the PWM or relay outputs for fan control is active

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Meaningg of the bottom display led
Led # 1 – 2 (With RTC)
If the bottom display shows the RTC the 1 and 2 leds are blinking.
Led # 1 – 2 In function Menu
During the time counting to the next defrost for one or both circuits the led 1 and 2 are blinking.
LED Parameter programming
In Pr2 level: led #3 indicates the visibility while the #1 and #2 show if the parameter can be modified or not.
In Pr3 level: led #3 and #4 indicate the visibility while the #1 and #2 show if the parameter can be modified or
not.
4. REMOTE KEYBOARD
The IC200L/D can be connected with 2 remote keyboard.
The remote keyboard can have the NTC probe on board that is used to show the room temperature and also
to control the temperature regulation.
To connect the remote keyboard it is necessary to use shielded cable for a maximum lenght of 150mt. In
case of no communication between the instrument and the remote keyboard the display shows “noL” (no
link).
Mod. VI620 – standard keyboard
Mod VI620S – keyboard with internal temperature probe
Use the connection cable CAB/CJ30 (2x0.2 mm2) to interface the IC connector to the shielded wire.
5. FIRST INSTALLING
On Board Clock (Optional)
Giving power supply the bottom display shows “rtC” alternated with a temperature or pressure value: It is
necessary to set the RTC.
If the probes are not connected the display shows the corresponding probe alarm messages. In this situation
the RTC setup and the programming are available.
ATTENTION
The RTC function is an optional and it is not possible to update the instrument but it is necessary to
order the instrument already complete of this features.
With power failure the RTC back-up battery maximum duration is 1 week. After this period it is necessary to
setup the clock again.
Real Time Clock Setup
1. Push Mkey for 3 seconds until the bottom display shows “Hour” and the top display shows its value.
2. Push SET one time: the value is blinking.
3. Use the Up and Down keys to adjust it. Push SET one time to confirm; automatically the display shows
next parameter.
4. Repeat the operations 2. 3. and 4. for all the RTC parameters:
- Min: minutes (0÷60)
- UdAy: day of the week (Sun = Sunday, Mon =Monday, tuE =Tuesday, UEd = Wednesday, tHu =
Thursday, Fri =Friday, SAt =Saturday)

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- dAy: day of the month (0÷31)
- MntH: month (1÷12)
- yEAr: year (00÷99)
6. WIRING CONNECTIONS
Ichill 260L
10 relays
18 digital inputs (free of voltage)
10 analogue inputs: NTC probes or through configuration 6 NTC / PTC and 4 pressure transducer 4÷20mA
or ratio-metric 0÷ 5.0Volt
6 modulating outputs
1 output for remote panel (max 2 remote panels)
1 TTL output for “Hot Key 64” connection or for XJ485, interface module for monitoring system, connection.
MAX current on the relay contacts relè 5(2)A 250V - MAX common current 12A 250V
Ichill 261L
14 relays
18 digital inputs (free of voltage)
10 analogue inputs: NTC probes or through configuration 6 NTC / PTC and 4 pressure transducer 4÷20mA
or ratio-metric 0÷ 5.0Volt
6 modulating outputs
1 output for remote panel (max 2 remote panels)
1 TTL output for “Hot Key 64” connection or for XJ485, interface module for monitoring system, connection.
MAX current on the relay contacts relè 5(2)A 250V - MAX common current 12A 250V

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Ichill 260D
10 digital outputs (relays)
18 digital inputs (free of voltage)
10 analogue inputs: NTC probes or through configuration 6 NTC / PTC and 4 pressure transducer 4÷20mA
or ratio-metric 0÷ 5.0Volt
6 modulating outputs
1 output for remote panel (max 2 remote panels)
1 TTL output for “Hot Key 64” connection
1 RS485 output with modbus RTU protocol for monitoring system, connection.
MAX current on the relay contacts relè 5(2)A 250V - MAX common current 12A 250V
Ichill 261D
14 digital outputs (relays)
18 digital inputs (free of voltage)
10 analogue inputs: NTC probes or through configuration 6 NTC / PTC and 4 pressure transducer 4÷20mA
or ratio-metric 0÷ 5.0Volt
6 modulating outputs
1 output for remote panel (max 2 remote panels)
1 TTL output for “Hot Key 64” connection
1 RS485 output with modbus RTU protocol for monitoring system.
MAX current on the relay contacts relè 5(2)A 250V - MAX common current 12A 250V

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Temperature probes connection (NTC – PTC Probes)
Connection diagram for IC260L / IC261L / IC260D and IC261D.
PbC = Probes common terminal
Digital Inputs
Connection diagram for IC260L / IC261L / IC260D and IC261D.
GND = Digital inputs common terminal

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Pressure Transducer connection (4 ÷ 20mA signal)
Connection diagram for IC260L / IC261L / IC260D and IC261D.
12V = Pressure trasducers common terminal
Ratiometric Transducer connection (0 ÷ 5V signal)
Connection diagram for IC260L / IC261L / IC260D and IC261D.

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PWM Output for Condensing Fan Speed Control
Connection diagram for IC260L / IC261L / IC260D and IC261D.
The PWM signal has to be connected to the cut of phase controller:
Mod. XV05PK mono-phase , cut phase control 500 Watt (2A)
Mod. XV10PK mono-phase , cut phase control 1000 Watt (4A)
Mod. XV22PK mono-phase , cut phase control 2200 Watt (9A)
Condensing Fan control: 0 ÷ 10Vdc signal
Connection diagram for IC260L / IC261L / IC260D and IC261D.
In case of only one condensing circuit configured, the Out1 / Out2 outputs work together giving the same
signal.