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Manuale utente MChiller LCA-LCW

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1. Faulty EEprom automatic EE It indicates a problem in the storing of data in the non volatile memory of the unit EEprom the regulation process continues on the basis of the data stored in the RAM In case of power failure in the unit the configuration is lost To overcome this problem enter through password the F level then return to normal operation by pressing PRG so as to force the storing of all parameters of the RAM in the EEprom Neither the buzzer nor the alarm relay will be activated Defrosting indications defrosting errors communication errors and compressors maintenance Type Reset Signal Circuit no 1 defrosting automatic d1 Circuit no 2 defrosting automatic d2 Circuit 1 defrosting error automatic manual r1 Circuit 2 defrosting error automatic manual r2 Error in communication with terminal automatic cN Compressor no 1 maintenance manual n1 Compressor no 2 maintenance manual n2 Defrosting circuit no 1 and no 2 Any time a defrosting cycle occurs the display will show d1 or d2 In this case since it indicates a operating status neither the buzzer nor the alarm relay will activate the yellow LED will not increase its blinking frequency The temperature value will blink alternatively to the defrosting indication Defrosting error on circuit no 1 and no 2 If a defrosting cycle ends for time out but instead an end has been selected for the defrosting
2. Low pressure alarm with pressure probes MM M IC O O O O flag ojojoj Others Type Min Max M U Variation Galletti Def H1 Instrument model F O AIR AIR unit not applicable 1 AIR AIR heat pump not applicable 2 AIR WATER chiller 3 AIR WATER heat pump 4 WATER WATER chiller 5 WATER WATER heat pump with gas reversibility 6 WATER WATER heat pump with water reversibility flag 1 4 H2 Number of ventilating circuits F 0 1 ventilating circuit 1 2 ventilating circuits flag V SB H3 Number of evaporators F 0 1 evaporator 1 2 evaporators flag B H4 Compressor with capacity controlled F valve Compr s operating in parallel 0 no 1 yes flag H5 Working logic of pump inlet fan AIR F AIR O not present 1 always ON 2 ON when regulator requires it flag H6 Cooling Heating digital input U 0 no1 yes flag H7 ON OFF digital input U 0 no 1 yes flag H8 Number of terminals F 0 1 1 2 flag H9 Keyboard lock up U flag HA Cc Serial address 16 Hb Infrared remote unit password U 15 RG66000889 REV 00 15 4 1 Parameters description Password USER To gain access to the USER parameters press the PRG button for 5 seconds Then insert the USER password 22 and finally press SEL FACTORY To gain acces
3. Water Flow switch The alarm condition is detected only if the pump is ON independently of the status of the compressor All the outputs disenergize pump compressor previously set OFF routines are ignored condensation removal fan and at the same time the buzzer the alarm relay and the lighting of the display are activated The control of water chillers H1_0 1 as well as the water pump H5_0 must be enabled Antifreeze alarm Water outlet from evaporator Type Delay Reset Signal Antifreeze 1 A3 manual automatic if P5 1 A1 Antifreeze 2 A3 manual automatic if P5 1 A2 The alarm condition is detected only in water chillers H1 2 3 4 5 or 6 by water probes at evaporator outlet B2 and in case B4 The compressor and the condensation fan are immediately forced into the OFF mode and at the same time the buzzer the alarm relay and the lighting of the display are activated If the temperature exceeds the set threshold the heater turns OFF and all the other controlled devices remain OFF until the alarm reset procedure takes place m keys pressed simultaneously for 5 seconds in the panel mounted terminal CLEAR key pressed for 5 seconds in the wall mounted terminal The antifreeze alarm appears either when the unit is in the Cooling operating mode or in the Heating operating mode in this case only after the time delay at start up has passed In the stand by status uchiller does not detect the alarm
4. 6 0 6 0 C bar 0 1 0 B calibration 10 8 10 8 F IA Condensing probe circuit 2 B5 U 6 0 6 0 C bar 0 1 0 SB calibration 10 8 10 8 F Ib Digital filter U 1 15 1 4 IC Input limitation U 1 15 1 8 ld Measurement Unit U 0 1 flag 1 0 0 C 1 F Regulator Type Min Max M U Variation sis Presence r1 Cooling set point D rA rb C F 0 1 120 r2 Cooling differential D 0 1 11 019 8 C 0 1 3 0 0 1 F r3 Heating set point D rC rd C F 0 1 40 0 r4 Heating set point D 0 1 11 019 8 C 0 1 20 0 1 F r5 Compressor rotation F 0 1 flag 1 0 B 0 yes 1 no RG66000889 REV OO 12 AGalletti Regulator Type Min Max M U Variation Co Presence r6 Water temp at output circuit 1 D C F evap B2 r7 Water temp at output circuit 2 D C F B evap B4 r8 Defrosting 1 D C F S temperature pressure B3 r9 Defrosting 2 D C F SB temperature pressure B5 rA Min Cooling set point U 40 rb C F 1 10 rb Max Cooling set point U rA 90 C 1 20 rA 194 F rc Min Heating set point U 40 rd C F 1 20 rd Max Heating set point U rc 90 C 1 45 rC 194 F Compressor Type Min Max M U Variation Sea Presence c1 Min running time U 0 150 sec 1 60 c2 Min stopping time U 0 90 10 sec 1 6 c3 Time interv
5. CE to confirm the operation Copying the unit s EEprom in the key uchiller Press PRG and 5 at uchiller start up to copy the unit s EEprom into the removable hardware key option When the procedure is over the display will show EC to confirm the operation Setting DEFAULT PARAMETERS Shower Press the PRG button at uchiller start up to set default parameters parameters set by Factory Default parameters are based on factory set parameters and refer to DIRECT and USER parameters only When the procedure is over the display will show dF to confirm the operation RG66000889 REV 00 9 Regulating the contrast on the display This procedure can be effected only on Remote terminals for wall mounted versions optional Press the button as shown in the picture to regulate the contrast of the display on three different levels in a cyclic way 3 4 Functions of the buttons for panel mounted versions The table below shows the meaning and functions of the buttons Button Status of the unit Effect after pressing the button Normal operating condition after 5 DIRECT parameters appear SEL List of codes displays values Displays values displays list of codes Normal operating condition after 5 password for USER parameters 2 stores parameters in EEprom then displays List of codes PRG temperature value of sensor B1 i store
6. Min time interval to start a def cycle Timer reset Min defrosting interval d6 Minimum defrosting time Minimum duration of the defrosting cycle defrosting continues even if the condensation probe measures values higher than the defrosting temperature pressure end Set d6 0 to ignore this function d7 Maximum defrosting time With a time based defrosting d2 0 it represents the actual duration of defrosting if on the contrary a temperature pressure based defrosting has been selected this parameter will indicate the maximum duration of defrosting an alarm message will appear on the display d8 Time interval between two defrosting cycles in the same circuit Minimum time interval between two successive cycles in the same circuit d9 Defrosting time interval between the two circuits It indicates the time interval between the defrosting cycles of the two circuits If d9 0 defrosting in the two circuits will be performed at the same time dA Defrost end detected by an external digital contact It activates the end of defrosting cycle from digital contact for example a pressostat The contacts are to be connected in the place of the condensation removal fan overload ID4 for circuit1 and ID11 for circuit2 By enabling the end of defrosting from digital input dA 1 the defrost procedure starts normally by condenser temp press threshold plus a control for the closed status of the defrost end digital input the end of defrosting
7. no 4 on expansion board optoinsulated at 24Vac with Normally Close logic alarm detected when input found open The power supply must be different from the one of the controller to get a real optoinsulation Analog outputs no 1 on single compressor board no 1 on expansion board for managing the fan speed board pulse width modulation signal PWM Digital outputs no 5 on single compressor board no 3 on expansion board no 3 of them reversing valve circuit 1 and 2 and alarm relay with double terminal the others with Normally Open logic e Switching power 10 A res at 250V AC3 class with cos 0 7 maximum load of 1 3 HP Technical specifications Working temperature 10T65 C Storage temperature 20T70 C Working humidity 90 rH not condensing Storage humidity like operating humidity Limits of surface temp like operating temperature in electrical panel with metallic mounting hardware connected to earth minimum distance from any Mounting i surrounding element 10mm Protection index PCB installator s care Environmental pollution normal Terminal for panel mounting Technical specifications Power supply from the single compressor main board Connections via 8 way telephone cable Maximum distance 3m from the single compressor main board Working temperature 10 65 C Storage temperature 20 70 C Working
8. PRG to store the modified parameters and exit the procedure while the SEL button allows to return to the User parameters menu On setting the parameters the display will automatically flash after a few seconds if no buttons are pressed If you do not press any button within 60 seconds after having entered this procedure the unit will return to normal operation without storing the values of the modified parameters RG66000889 REV OO 6 AGalletti AIR CONDITIONING Setting and displaying FACTORY SET parameters uchiller Factory set parameters are configuration parameters and so they are protected by a password to prevent any unauthorized access to the data Press PRG and SEL simultaneously for more than 5 seconds to enter the factory set parameters unit configuration parameters menu This section is protected by a code password which is different from the User one to prevent any unauthorized access to the data Setting the password 00 flashes on the display Pressing the and buttons will allow you to stop the blinking effect for a few seconds and select the password value then press SEL to directly enter the factory set parameters section On setting the password the display will automatically flash after a few seconds if no buttons are pressed FACTORY set parameters selection the display shows the code of the factory set parameter that can be modified Pressing and allows to scroll all factory set parameters Press SEL ag
9. Set Point Winter Set Point differential Winter Set Point Cooling functioning mode 2 compressors or capacity controlled routine Cooling functioning mode ON OFF probe Compressor Close contact r5 Compressors rotation Open contact This function makes it possible to activate the compressors so as to balance their operating hours They are actuated according to a FIFO first in first out logic both at start up and when the compressor turns off the first to be turned on will be the first to be turned OFF The first to be turned OFF will be the first to be turned on r6 Water temperature evaporator output circuit no 1 B2 It displays the temperature at evaporator outlet in circuit no 1 B2 RG66000889 REV 00 18 AGalletti r7 Water temperature evaporator output circuit no 2 B4 It displays the temperature at evaporator outlet in circuit no 2 B4 r8 Temperature pressure defrosting 1 B3 It displays temperature or pressure of the condenser of circuit no 1 B3 r9 Temperature pressure defrosting 2 B5 It displays temperature or pressure of the condenser of circuit no 2 B5 rA Min Cooling set point It is the minimum value for the Cooling set point rb Max Cooling set point It allows to set the maximum Cooling set point rC Min Heating set point It allows to set the minimum Heating set point rd Max Heating set point It allows to set the maximum Heating set point Co
10. With water water heat pump with gas reversibility H1 5 this parameter indicates the control action against freezing effects in the heat exchanger used as evaporator in heating mode d2 Timed or temperature based defrosting It sets a timed defrosting fixed time interval or a temperature based cycle defrosting will stop as soon as the condensation probe reaches the end defrosting temperature or pressure set by the USER or if the contacts for the end of defrosting are detected open with dA 1 d3 Temperature pressure starting the defrosting cycle or condensation antifreeze alarm set point With heat pumps with air condensation H1 1 3 it sets the temperature or pressure threshold under which a defrosting cycle occurs In order to activate a defrosting cycle such a condition must persist for a specific period of time see parameter d5 For water water heat pump with gas reversibility H1 5 this parameter defines the set point relative to the antifreeze alarm in the heat exchanger used as evaporator in heating mode RG66000889 REV 00 23 d4 End defrosting temperature pressure It indicates the temperature or pressure threshold which makes the defrosting cycle end d5 Minimum time interval before starting a defrosting cycle It indicates the time interval necessary to carry out the d3 condition before a defrosting cycle is started the compressor must be ON Temperature based defrosting d2 1 Start defrost End defrosting T P i
11. cycle when the threshold is reached or from an external contact the unit will display r1 or r2 This message can be cleared through the alarm reset procedure or by carrying out a new defrosting cycle correctly In this case neither the buzzer nor the alarm relay will activate the yellow LED on the board will go on blinking at normal frequency The temperature value will blink alternatively to the defrosting error indication Error in the communication with the terminal In case of failed communication between the single compressor board and the terminal both a local terminal and a remote one the unit will display Cn check the cable and the correct connection between cable and female connectors on the board Neither the buzzer nor the alarm relay will activate The yellow LED will blink at normal frequency The display will constantly show the message Cn Maintenance of 1st 2nd compressor When the compressor exceeds a selected operating hours threshold factory set value 0 hour therefore the control is disabled a message prompting maintenance will appear on the display Neither the buzzer nor the alarm relay will activate The yellow LED will blink at normal frequency as well as the temperature value on display alternatively to the maintenance indication 5 2 Unit indication sequences The unit displays messages every 32 seconds When uchiller is in stand by and there is at least one active alarm condition all the LED indicators will
12. humidity 90 rH not condensing Storage humidity like operating humidity Limits of surface temp like operating temperature Max number 2 Mounting panel mounted through plastic clips supplied with the unit Protection index IP55 Environmental pollution normal RG66000889 REV 00 36 Terminal for wall mounting AGalletti Technical specifications Power supply from the single compressor main board Connections via 8 way telephone cable Max distance 3m from the single compressor main board Working temperature 0 50 C Storage temperature 10 70 C Working humidity 90 rH not condensing Storage humidity like operating humidity Limits of surface temp Max number like operating temperature 2 Mounting wall mounted minimum distance from any surrounding frontal or lateral element 10mm Environmental pollution normal N B model available only for the foreign market Protection against electrical high voltage shock The system composed of the single compressor main board any expansion board for the 2nd compressor the local and the remote terminals the driver board and the other optional boards is a command device to be integrated The class regarding the protection against the electric shock depends on how the integration of the driving device realized by the manufacturer is being carried out The board mounting of t
13. is detected with an OPEN contact Value Selection 0 end of defrosting detected by a NOT enabled external contact 1 end of defrosting detected by an enabled external contact db Defrosting of antifreeze support heaters The parameter sets if during defrosting the antifreeze support heaters must be activated so as to limit the flow of cold water air in the environment With a two compressor unit the heaters to be activated are those relative to the circuit which is effecting the defrosting The meaning of this parameter is as follows Value Selection 0 antifreeze support heaters NOT activated during defrost 1 antifreeze support heaters activated during defrost RG66000889 REV OO 24 AGalletti dc Delay before defrosting When the defrosting condition has been detected but before the real activation of the cycle the unit stops the compressor for a time interval dc selectable from 0 to 3 minutes After the compressor stops the 4 way valves will rotate after a time lapse of dc 2 such an interval allows pressures to be balanced before the defrosting cycle is activated With this procedure the timing of the compressor protection is not respected therefore the compressor stops and starts immediately If dc 0 such a procedure is not effected and the reverse cycle valve is immediately rotated as usual dd Delay after defrosting When the defrosting cycle is over the unit will stop the compressor for
14. more external side of the electronic component must be set in ON position this procedure must be effected only in one of the 2 terminals Remember to set parameter H8 1 as well Meaning of dip switches located on the rear side of terminal On the rear side of terminal there are 4 dip switches for managing particular functions as follows Address 0 1 terminal connected to the single compressor board default Address 1 if 2 terminals are connected to the single compressor board set one of the two dip switches as follows 0 buzzer always inhibited address 0 1 term Trip chilier 1 buzzer enabled see parameter P4 default Keypad 0 terminal inhibited Keypad 1 terminal enabled default Pressure probes The inputs for the control of condensation B3 and B5 can be arranged so as to accept either Carel NTC temperature probes or pressure transducers with 4 20mA in this case by suitably setting parameter 3 and pin strips P4 and P5 located on the main board The pressure transducers has to be connected to boards with 24V terminal 8 Optional boards 8 1 Serial card RS485 The Serial card RS485 allows you to interface the uchiller to a supervisory network in RS485 standard asynchronous The card has 4 dip switches that enables you to extend the uchiller addressing up to 199 units Mounting Operations to be carried out for correct mounting 1 Disconnect power supply from the uchiller 2 Insert the RS485 card on th
15. remain active except the buzzer When in stand by however uchiller detects probe and eeprom alarms only alarms from digital inputs will not be managed RG66000889 REV 00 31 Yellow LED located on singol A N Error mess compressor board Display Buzzer Alarm Relay 1 E1 2 E2 3 E3 blinks faster 1 4 E4 5 E5 6 EE blinks at normal frequency ON 2 Energized 7 FL 8 H1 9 L1 10 C1 blinks faster 1 11 F1 Flashes 12 A1 13 d1 14 r1 blinks at normal frequency OFF Disenergized 15 n1 16 H2 17 L2 18 C2 blinks faster 1 ON 2 Energized 19 F2 20 A2 21 d2 22 r2 F blinks at normal frequency OFF Disenergized 23 n2 cn flashing 24 Cn 25 LO blinks faster 1 Flashes ON 2 Energized 1 about twice a second 2 whenever enabled 6 Infrared remote control unit uchiller can be programmed via an optional infrared remote controller Since each button on the remote control unit has got a specific function programming the controller is now a totally straightforward process Pressing either the or button will allow you to display the code of a specific parameter press the same button s once again to display the value of the selected parameter which can be modified by pressing and once again 10 seconds after you have modified the parameter value the unit will automatically display the code of the modified parameter When programming uc
16. to the cooling operating mode if the unit is actually operating in the heating mode pressing the UP button will not swap the current mode Enabling disabling of HEATING operating mode TI al The Heating operating mode can be enabled disabled by pressing the o button in panel mounted versions for more than 5 seconds see if necessary the parameter P6 It is not possible to directly pass from the Cooling to the Heating operating mode if the unit is actually operating in the Cooling mode pressing the UP button will not swap the current mode it is necessary to inhibit the Cooling mode Stand by To turn off the unit deactivate the current operating mode Cooling or Heating When the pchiller is turned off it maintains the 4 way valves in the previous position for a period equal to the parameter c8 pump OFF delay after the compressor is OFF RG66000889 REV OO 8 gt As AGalletti AIR CONDITIONING Reset timers When the display shows the operating hours of the compressor or of the pump parameters c9 cA and cC you can reset the timer by pressing the and buttons and the CLEAR button in wall mounted versions In this case the unit will not prompt the relative compressors maintenance message Copying the KEY in the unit s EEprom ue B Press PRG and at pchiller start up to copy the removable hardware key optional into the EEprom of the unit When the procedure is over the display will show
17. 889 REV 00 2 AGalletti AIR CONDITIONING 1 Introduction uchiller is a Carel s regulator that integrates into just one case all the control functions required by an air conditioning unit uchiller is a complete reliable and solid instrument Thanks to its modular structure it provides a wide range of flexible applications uchiller has been specifically designed to control and regulate air air units also air conditioning unit with two heating steps two cooling steps and dead zone chillers and chillers with single compressor heat pump single compressor units with one capacity controlled routine or two compressor units Regulation of condensation fans can be either temperature or pressure based with ON OFF regulation mode or with continuous rotation speed variation Today using uchiller can be even easier thanks to the remote control unit that allows to easily and quickly select all the operating parameters The uchiller control board can be entirely programmed for specific uses by means of a programmable and removable hardware key to allow easy and rapid on site operations For Customers requiring absolute security uchiller can be connected with a removable User Interface Since the regulator includes two different separate parts User Interface and power section it is now possible to take away the User Interface once the unit has been programmed so as to prevent unauthorized access to the selected parameters The addi
18. LCA LCW LCR Water chillers and heat pumps USER MANUAL COMPANY na WITH QUALITY SYSTEM CERTIFIED BY DNV SO0 9002 a A Galletti AIR GON D I TION ING INDICE 1 INTOdUCIioni cieca 3 2 General SS Cr th aaa 3 2 1 FUNCIONS aaa RIA A Ai EE 3 2 2 Main Board aa e a aaaea aE a aeaa ar aa aaa EE a arai eaa e A Aiea ARREA 3 2 3 Second compressor board iii 4 3 Userinterface Terminali rrgG PGGGGE A 5 3 1 Status of the 772722 Eain SE 5 3 2 Keypad ease cette nic esd a ese Sas eon ec ae eee 6 3 3 Buttons and relative messages on display ii 6 3 4 Functions of the buttons for panel mounted VErsions i 10 3 5 Functions of the buttons wall mounted UNITS 10 3 6 Inputs and OUtDUES PI 11 AR ANN assess sias ns ais is a a none eee a a a eng nest ence ada a I E aaa 12 4 1 Parameters description 16 5 Alarms and messages kiss ccd ann ean ee 29 5 1 Other BIANMS sakiusi i ii i i i i i a anita 30 5 2 Unit indication sequences kana Aaaa Aaaa Aaaa kaka Aaaa Aaaa aaa aa aaa a aaa akanai aaa 31 6 Infraredremotecontrolunit cede sak a a i a a aa 32 7 Wiring Omo E 1 6 Bee asas asas ais all saaa sasas 33 8 Optional boards aaa akiniais ias iii is i ne aero ree me ene 34 8 1 Serial card RS485 seseriai eisrean ann ii Ki i i i k i i i a a 34 G Technicalspecificationis aaa 36 RG66000
19. a time interval dd selectable from 0 to 3min After the compressor stops the 4 way valves will rotate after a time lapse of dd 2 such an interval allows pressures to be balanced and in case a dripping of the external exchanger With this procedure the timing of the compressor protection is not respected therefore the compressor stops and starts immediately If dd 0 such a procedure is not effected and the reverse cycle valve is immediately rotated as usual dE End defrosting with 2 gas circuits and 1 air circuit The parameter dE allows the selection of the end of defrosting in the machines with 2 refrigerating circuits and 1 air circuit Value Selection 0 when both the circuits have reached the end of defrosting 1 when one of the circuits has reached the end of the defrosting Antifreeze parameters A A1 Antifreeze It indicates the water temperature at the evaporator outlet below which the unit prompts an antifreeze alarm In the event of antifreeze alarm the compressor will be stopped but the pump remains ON The reset is manual and takes place only when the water temperature returns within the operating limits that is when it exceeds the value A1 A2 this alarm activated according to B1 or B2 probes with the variation of parameter A6 cause just a message in the display and is automatically reset A2 Differential for antifreeze It indicates the differential for the antifreeze alarm the alarm condition ca
20. ain to display the required Factory parameter and modify its value with the and buttons Press PRG to store the modified parameters and exit the procedure while the SEL button allows to return to the Factory parameters menu On setting the parameters the display will automatically flash after a few seconds if no buttons are pressed If you do not press any button within 60 seconds after having entered this procedure the unit will return to normal operation without storing the values of the modified parameters Muting the BUZZER g G 4 Press the MUTE button to silence the buzzer Resetting ALARMS Press a and lo for more than 5 seconds to reset any alarm condition manual reset The relative LED light will turn off and the alarm relay will switched off In wall mounting versions you only have to press CLEAR for 5 seconds RG66000889 REV 00 7 AGalletti AIR CONDITIONING Forcing a DEFROSTING CYCLE only Air Water Heat Pumps To force a defrosting cycle press the SEL and buttons for more than 5 seconds if the temperature pressure values of the outdoor exchanger are lower than the values set for the end of defrosting In units with 2 Circuits the defrosting cycles will be simultaneous The cooling operating mode can be enabled disabled by pressing the a button in panel mounted versions for more than 5 s see if necessary the param P6 It is not possible to directly pass from the heating
21. al between 2 starts U 0 90 10 sec 1 36 c4 Time delay between starts of the U 0 150 sec 10 150 B two compr s when starting the capacity controlled routine c5 Time delay between turning OFF the U 0 15 sec 1 0 B two compressor before ending the capacity controlled routine c6 Time delay at start up U 0 150 sec 10 0 c7 Delay in switching on compressor U 0 150 sec 1 20 after switching on the pump c8 Delay in switching OFF compressor U 0 150 min 1 20 after switching OFF the pump c9 Timer compressor 1 D 0 19900 ore cA Timer compressor 2 D 0 19900 ore B cb Timer threshold for maintenance U 0 100 ore 1 0 alarm cC Pump inlet fan timer D 0 19900 ore Fan Type Min Max M U Var ne Presence F1 Fans Output 0 no 1 yes F 0 1 flag 1 0___ F2 Fans operating mode U 0 3 flags 1 0 V O always ON 1 on when the compressor is ON 2 comp ON OFF reg 3 comp speed regulator F3 Min tension threshold for Triac F 0 F4 step 1 0 V S F4 Max tension threshold for Triac F F3 166 step 0 V S 138 F5 Temp value for min Summer speed U 0 F6 C 0 1 0 V S Pressure value for min Summer speed 32 F6 F 14 F6 bar 0 1 0 F6 Temperature value for max Summer U F5 50 C 0 1 0 V S speed F5 122 F Pressure value for max Summer speed F5 15 bar 0 1 0 RG66000889 REV 00 13 AGall
22. an be excluded in both versions via dip switch or via dedicated parameter signals any alarm in the unit Figura 1 Panel mounting terminal Display The display consists of 3 digits with the automatic display of the decimal point between 19 9 and 19 9 C outside this measurement range the value is automatically displayed without decimal e g 21 although in its inside the machine is always operating by taking into account the decimal part During the normal operation the displayed value corresponds to the temperature being read by the probe B1 that is the evaporator water in let temperature 99 00000000 Figura 2 Wall mounting terminal 3 1 Statusofthe unit The User is informed of the status of the unit by means of five LED indicators on the terminal display and two LED indicators yellow and green placed on the main board Meaning of LED indicators in single compressor units LED Flashing Steady Comp left Not used Not used Comp right Request for compres 1 Compressor 1 actuated Cooling Cooling Heating Heating x100 Value x100 Meaning of LED indicators in two compressor units LED Flashing Steady Comp left Request for compres 1 Compressor 1 actuated Comp right Request for compres 2 or Compressor 2 actuated or P rig Request for compres 1 at 100 Compressor 1 actuated at 100 Cooling Cooling Heating Heating x100 Value x100 Yell
23. ating modes of the fans They can be e 0 always ON independently of the compressors unless the unit is on a stand by situation e 10N when the relative compressor is ON parallel operating mode 2 ON when the relative compressor is ON with ON OFF regulation according to the min and max temperature affecting speed parameters F5 F6 F7 and F8 When the compressors are turned OFF the relative fans are deactivated independently of the condensation temperature pressure 3 ON when the relative compressor is ON plus speed regulation When the compressors are turned OFF the relative fans are deactivated independently of the condensation temperature pressure RG66000889 REV 00 21 Example of F2 2 Cooling mode T P condensation Fan F5 Temp Min F6 Temp Max Summer Summer Speed Speed Example of F2 2 Heating mode 100 T P condensation Fan F5 Temp Max F6 Temp Min Winter Speed Winter Speed Example of F2 3 Cooling mode 100 Max speed s Min speed Eina RER 0 F9 F5 F6 Cutoff temperature Summer T P max Summer speed Example of F2 3 Heating mode 100 Max speed 0 F8 F7 F9 T P max Winter speed Cutoff temperature Winter If F2 3 and the condensation probes are of NTC type when the compressor is being started the funs operate at the max speed for the Fb period independently of the measured temperature F3 Minimum tension threshold for Triac With fans spee
24. ator parameters r r1 Cooling Set Point It allows to set the Cooling set point value direct r2 Cooling differential It allows to set the Cooling differential Cooling functioning mode 1 compressor Summer Set Point Summer Set Point differential Cooling functioning mode 2 compressor or capacity controlled compressor Summer Set Point Summer Set Point differential Cooling functioning mode width ON OFF probe Compressor Open contact Close contact RG66000889 REV 00 17 In capacity controlled compressors the functioning logic is as follows Reguest Compressor contactor Partialization solenoid valve Start up OFF disenergized disenergized Capacity controlled energized energized Full load energized disenergized OFF routine Full load energized disenergized Capacity controlled energized energized OFF disenergized disenergized Upon request of full load start up the capacity controlled solenoid valve energizes after 2 seconds the compressor relay will be actuated When the c4 time delay has passed time interval between compressor activation and relative capacity controlled routine the solenoid valve will disenergize r3 Heating set point It allows to set the Heating set point reverse r4 Heating differential It allows to set the Heating differential Heating functioning mode 1 compressor Winter Set Point differential Winter
25. but it controls and manages the water heaters optional In the direct expansion units H1 0 1 alarm is used to detect any low ambient temperature by means of probes B1 or B2 according to the parameter A6 support heater control probe The low ambient temperature alarm appears either when the unit is in the Cooling operating mode or in the Heating operating mode in Heating operating only if the time delay at start up has passed this alarm activates the buzzer the alarm relay and the lighting of the display but it is not detected when the unit is in stand by Type Delay Reset Signal Low ambient temperature A3 manual LO 5 1 Other alarms Probe Alarms Type Reset Signal Probe B1 Water temperature at evaporator input automatic E1 Probe B2 Water temperature at evaporator output circuit 1 automatic E2 Probe B3 Condensation temperature pressure circuit 1 automatic E3 Probe B4 Water temperature at evaporator output circuit 2 automatic E4 Probe B5 Condensation temperature pressure circuit 2 automatic ES They are detected also with the unit in stand by As a result of a probe alarm the compressors and the condensation fans and the pump are forced into the OFF mode RG66000889 REV 00 AGalletti The alarms E2 and E4 E3 and E5 with unit model no 5 in water chillers activate the corresponding antifreeze heater Faulty EEprom alarm Type Input Alarm Delay Reset Error
26. connector for expansion board connection e digital relay outputs to manage any controlled device e the Y1 GND analog output for the connection of the optional boards for the management of condensation fans ON OFF regulation mode or with continuous rotation speed variation e telephone connector for user terminal connection i RES COMP VALVE RG66000889 REV 00 3 Within the board itself you can also locate other four important areas e the SERIAL jumper for connection of an optional serial board for the interfacing to a supervisory and or telemaintenance centralized system e the KEY jumper for connection of the optional board removable hardware key for the immediate on site programming of all data e P1 P5 pin strips for the function mode selection of the analog inputs B1 B5 e P6pin strip relative to the Y1 analog output to be normally left open except in particular situations see parameters F3 and F4 The single compressor board has been designed so as to support two connected terminals allowing therefore data access from two different points it can also work without any connected terminal ensuring this way a total safety to the data 2 3 Second compressor board It represents an expansion of the main board which proves to be useful for the management of a second compressor unit in this case only the COMP 2 terminal connection used to manage the relative solenoid valve must be effected The connection areas a
27. d regulation phase cut optional board is required In this case it is necessary to specify the tension delivered by the Triac to the electrical motor of the fan corresponding to the min speed The selected value does not correspond to the real tension applied but to an internal variable within the uchiller See page 60 to find the value of F3 If either the ON OFF converter code CONVONOFFO or the PWM 0 10V converter code CONV0 10A0 are used we recommend to set this parameter to 0 and close the jumpers P1 and P6 located in the single compressor board and in the expansion for control of the second compressor F4 Maximum tension threshold for Triac With fans speed regulation phase cut optional board is required In this case it is necessary to specify the tension delivered by the Triac to the electrical motor of the fan corresponding to the max speed The selected value does not RG66000889 REV 00 22 AGalletti correspond to the real tension applied but to an internal variable within the uchiller See page 60 to find the value of F4 If either the ON OFF converter code CONVONOFFO or the PWM 0 10V converter code CONVO 10A0 are used we recommend to set this parameter to its maximum value 166 in case of mains freguency of 50 Hz 138 if it is egual to 60Hz and close the jumpers P1 and P6 located in the single compressor board and in the expansion for control of the second compressor F5 Temperature pressure for minimum Summer s
28. e SERIAL connector of the main board 3 When making the connection of the serial line pay attention to polarities as shown The serial line must be closed by means of a 120 1 4W resistance placed between the TX RX and TX RX terminals of the uchiller at the end line of the network Set up The network address of the uchiller is selected through the HA parameter and dip switch bank present in the card The actual address is obtained by adding HA to the offset obtained from the following table Offset Dip 1 Dip 2 Dip 3 Dip 4 0 off 16 ati oti ON 32 ON off 48 off ON 64 off off 80 ON ON 96 ON off 112 ON 128 off off 144 ON off ON 160 ON off For example if the HA value is 12 and the dip 1 is in the ON state the address value is 12 128 140 RG66000889 REV OO 34 AGalletti RS485 serial board technical characteristics Power supply voltage 5Vdc 10 from the uchiller through plug in connector Absorbed current 70 MA Storage conditions 10T70 10 70 C rH lt 90 not condensing Operating conditions T65 0 65 C rH lt 90 not condensing Card dimensions 50x50 mm Protection index IP00 Environmental pollution normal Surface temperature limits as for operating temperature Classif according to the protection against the electric shocks to be incorporated into Class I or II egui
29. e flow switch alarm will not be present although the Pump Relay will be normally activated H6 Cooling Heating digital input This parameter enables the Cooling Heating selection from digital input If enabled this function is prior to any keyboard command the Cooling Heating command on the keyboard is disabled With enabled selection H6 1 the open status forces the unit to function in Cooling mode H7 ON OFF digital input This parameter enables the ON OFF selection from digital input If enabled this function is prior to any keyboard command With enabled selection H7 1 the open status forces the unit to switch OFF H8 Number of terminals It indicates the number of terminals connected to the unit max 2 H9 Lock of direct parameters modification This parameter allows to disable the procedure through which can modify DIRECT and USER parameters through keyboard or through remote control In this way you will be able to display the parameter but not to modify them The following functions will also be disabled Cooling Heating selection forced defrosting and timers reset The table below shows how to set the parameter Value Remote control Keyboard 0 enabled disabled 1 default enabled enabled 2 disabled disabled 3 disabled enabled HA Serial address It indicates the address of the instrument used to carry out serial connection by means of the RS485 serial board to a supervisory and or tel
30. e pressure probe Calibration of evaporator inlet water probe B1 It allows to add an offset to the value measured by B1 Calibration of evaporator outlet water probe at circuit no 1 B2 It allows to add an offset to the value measured by B2 Calibration of condensation probe circuit no 1 B3 It allows to add an offset to the value measured by B3 RG66000889 REV OO 16 AGalletti 19 Calibration of evaporator outlet water probe at circuit no 2 B4 It allows to add an offset to the value measured by B4 IA Calibration of condensation probe circuit no 2 B5 It allows to add an offset to the value measured by B5 Ib Digital filter It allows to calculate the coefficient relative to the digital filter of the measured value Give this parameter a high value recommended 4 so as to eliminate any noise at analog input lines they however decrease the sensitiveness of the probe IC Input limitation This parameter allows to set the max variation in the value detected by the probes during any cycle of the unit The measure variation range is 0 1 1 5 units bar C or F according to the probe and the measurement scale about every second Giving this parameter low values allows to limit impulsive noise effects Recommended value 8 Id Measurement scale It allows to set the operating mode either in degrees Centigrade or Fahrenheit As the parameter varies uchiller automatically turns the values into the new measurement scale Regul
31. emaintenance computer Hb Remote control unit password This parameter indicates the address of the instrument for the data transmission via remote control if several units are placed within the effective range of the remote control the modified parameters can be transmitted in facts simultaneously to all the units or only to a specific unit If the password value is 00 transmission is immediate any value different from 0 implies that the user will have to type that number on the remote control as access code any time he programs the unit RG66000889 REV 00 28 AGalletti 5 Alarms and messages Any time an alarm condition is detected the controller will prompt the following actions the buzzer sounds if previously enabled see P4 parameter and dip switch no 3 on the terminal and if the machine is not in stand by the alarm relay energizes the temperature value blinks on display the yellow LED on the single compressor main board will blink with increased frequency the alarm code appears on the LCD alternatively with the temperature value After the alarms have been cleared either with automatic reset or by pressing the 4 and lv keys simultaneously for 5s for alarms with manual reset the controller will restore normal operating conditions the buzzer turns off the alarm relay is disenergized the temperature value blinks no longer the yellow LED blinks at normal frequency the alarm code disappears
32. essible via factory set password The presence of certain parameters in the various groups probe controller compressor etc depends on the type of the controller and on the value given to some specific parameters controller for two compressor units B in two compressor units only presence of condensation probe s S if condensation probe s are enabled 3 lt gt 0 current input s C only if the unit has current input s 3 2 presence of fan s V only in units equipped with fan control F1 lt gt 0 defrosting D only when the defrosting function has been selected d1 1 Probe Type Min Max M U Variation erat Presence 1 Type of probe at evaporator F 0 1 flag 1 1 f water inlet ambient air B10 On Off 1 NTC Carel 12 Type of probe evaporator outlet F 0 1 flag 1 1 water B2 e B40 On Off 1 NTC Carel 13 Type of condensation probe F 0 2 flags 1 20 circuit 1 and 2 1 NTC Carel 2 pressure 4 20mA 14 Min value current input F 0 15 bar 1 0 CS 5 Max value current input F 14 35 bar 1 30 CS 6 Probe at evaporator water U 6 0 6 0 C 0 1 0 inlet ambient air probe B1 10 8 10 8 F calibration IT Probe outlet water circuit 1 B2 U 6 0 6 0 C 0 1 O a calibration 10 8 10 8 F 18 Defrosting probe circuit 1 B3 U 6 0 6 0 C 0 1 0 S calibration 10 8 10 8 F 19 Outlet water probe circuit 2 B4 U
33. etti Fan Type Min Max M U Var a Presence F7 Temperature value for min Winter U F8 50 C 0 1 0 V S speed F8 122 F Pressure value for min Winter speed F8 15 bar 0 1 0 F8 Temperature value for max Winter U 0 F7 C 0 1 0 V S speed 32 F7 F Pressure value for max Winter speed 14 F7 bar 0 1 0 F9 Temp to turn OFF the fan in Summer U 0 F5 C 0 1 0 V S Pressure to turn OFF the fan in 32 F5 F Summer 14 F5 bar 0 1 FA Temp to turn OFF the fan in Winter U F7 50 C 0 1 V S Pressure to turn OFF the fan in Winter F7 122 E F7 15 bar 0 1 0 Fb Starting time of fans U 0 15 4 sec 1 0 V S Regulator Type Min Max M U Variation saad Presence d1 Defrosting cycle Condensation U 0 1 flag 1 0 S antifreeze O no 1 yes d2 Time or temperature based U 0 1 flag 1 0 D S defrostingO time1 temperature d3 Start defrosting temperature U 30 d4 C 0 1 0 D S Condensation antifreeze alarm set 22 d4 F point Start defrosting pressure 4 d4 bar 0 1 0 d4 End defrosting temperature U d3 50 C 0 1 0 D S d3 122 F End defrosting pressure d3 15 bar 0 1 d5 Min time interval to start a defrosting U 10 150 sec 10 D S cycle d6 Min duration of a defrosting cycle U 0 150 sec 10 0 D S d7 Max duration of a defrosting cycle U 1 15 min 1 0 D S d8 T
34. from the LCD If the alarm condition persists the actions described above will be performed again External digital alarms uchiller has 9 alarms detected by means of external digital contacts 24Vac such external alarms are not detected with the unit in stand by and with parameter P5 set to 1 and all have a manual reset Digital Message Type input Alarm Delay Reset on display High pressure circuit 1 1 open manual automatic with P5 1 H1 Low pressure circuit 1 2 open P3 manual automatic with P5 1 L1 Compressor 1 overload 3 open automatic C1 Fan overload circuit 1 4 open automatic F1 Flow switch 5 open P1eP2 manual automatic with P5 1 FL High pressure circuit 2 8 open manual automatic with P5 1 H2 Low pressure circuit 2 9 open P3 manual automatic with P5 1 L2 Compressor 2 overload 10 open automatic C2 Fan overload circuit 2 11 open automatic F2 Active if the defrost end by external contact is not enabled dA 0 High pressure The alarm condition is detected independently of the status of the pump and compressors The compressors are immediately forced into the OFF mode previously set protection time intervals are ignored and at the same time the buzzer the alarm relay and the lighting of the display are activated Fans are activated at max speed for 60s to face the alarm situation After this period they are stopped in case of two compresso
35. he probe to be used B1 or B2 for the control of support heaters The Value Selection meaning of the parameter is as follows 0 BI 1 B2 Alarms parameters P P1 Delayed flow switch alarm at pump start up It allows to set a time delay to elapse before showing the flow switch alarm at pump start up the flow rate needs a certain time to settle so the delay is meant to avoid any unstable signal from the sensor This function allows to avoid to stop the unit in case of presence of double pump group and a possible automatic rotation after a failure in one of this P2 Delayed flow switch alarm during normal operating It indicates a time delay which is to elapse before showing the flow switch alarm during normal operation The alarm in fact might be due to capacity variations or air bubbles in the water circuit and this function allows to avoid to stop the unit in case of presence of double pump group and a possible automatic rotation after a failure in one of this P3 Delayed low pressure alarm at compressor start up It indicates a time delay which is to elapse before showing the low pressure alarm at compressor start up so as to reach a normal flow rate avoiding any unstable signal from the sensor P4 Buzzer It indicates how long the buzzer will sound in the event of an alarm situation if P4 0 the buzzer remains always OFF with a range between 1 and 14 minutes the buzzer automatically silences after the selected P4
36. he system must provide the earthing of the metallized fastening holes and of the conductor connected to the terminal GO in order to meet the provisions established by the European standards as to the electromagnetic emission and immunity The terminal has a functional insulation among the parts at very low voltage and every part accessible to the user Therefore it is possible to make a machine with principal insulation and protection conductor connected to the ground Class 1 by using to supply the system a transformer equipped with principal insulation earthed secondary and safety conductor in order to ensure the required protection against electric shocks Before operating on the board during the mounting maintenance and replacement operations cut off the power supply The protection against the short circuits due to faulty wiring must be guaranteed by the manufacturer of the apparatus within which the driving device is being integrated Note on the number of terminals that can be connected It is possible to connect two energized terminals at most address 0 and 1 all the others must be pre arranged as passive The maximum number of terminals at 150m is 2 The total maximum number of terminals is 3 All of the above mentioned boards comply to the following characteristics Technical specifications Min cable section screw terminal power boards 0 2mm Max cable section screw terminal power boa
37. hiller via remote controller the dedicated LED on the display see the chapters 3 and 3 3 will blink If you do not press any button within 50 seconds after having started the programming procedure via remote control unit the unit exits the configuration procedure without storing the modified data Example of programming It is necessary to modify the heating differential r4 press ENABLE button to operate the remote control unit first parameter 6 will be displayed press once either or relative to the heating differential its code r4 will be displayed press once again either or relative to the heating differential the existing value of the parameter will be displayed press once again either or to increase decrease the value until you reach the desired value save the modified value pressing PRG button inlet water temperature will be displayed IRUN Whenever necessary it is possible to stop the programming procedure pressing ESC button once activated communication from remote control unit point 1 it is possible to view every parameter using and buttons and to modify it using SEL button RG66000889 REV OO 32 AGalletti conp 7 Wiring connection The drawings below show the wiring connection of the unit and of the remote terminal Terminale locale Local terminal unit 24 Vac D O C Arz 8 ONO Za OND IS OND Temp acqua ingresso evaporatore Inlet water temperature Te
38. ime delay between 2 defrosting U 10 150 min 10 0 D S cycles within the same circuit d9 Defrosting time interval between the U 0 150 min 10 0 D SB 2 circuits dA Defrost end by external contact F 0 1 flag 1 D S db Antifreeze heaters activated while U 0 1 flag 1 D S defrosting dc Delay before defrosting F 0 3 min 1 0 D S dd Delay after defrosting F 0 3 min 1 0 D S dE End defrosting with 2 refrigerating F 0 1 flag 1 0 D SB circuits and 1 removal fan Antifreeze Type Min Max M U Variation ons Presence A1 Antifreeze U 30 A4 C 0 1 40 22 A4 F A2 Differential for antifreeze U 0 1 11 0 C 0 1 20 0 1 19 8 F A3 Bypass time for antifreeze alarm U 0 150 sec 10 10 A4 Set point for the activation of antifreeze U A1 rd CI F 0 1 O nese heater A5 Diff for antifreeze heater U 0 1 11 0 C 0 1 0 RG66000889 REV OO 14 AGalletti Antifreeze Type Min Max M U Variation Galletti Def Presence 19 8 F A6 Supporting heaters probe flag Alarm Type Max M U Variation Galletti Def P1 Flow switch alarm delayed when starting the pump 150 sec 10 10 P2 Flow switch alarm delayed during normal operating 90 sec P3 Low pressure alarm delayed at compr start up 150 sec 120 P4 P5 Buzzer ON Reset of alarms min flag P6 2nd set of param flag P7
39. ips P2 and P3 bridge terminals 2 and 3 for accepting ON OFF signals If you are using an ON OFF contact and inputs are detected open B 14 15 16 IT 18 antifreeze heaters will be activated antifreeze alarm will be activated after any delay on start up A3 parameter Type of condensation probe for circuit no 1 and 2 B3 and B5 This parameter indicates the operating logic of the analog inputs relative to the condenser probes meant to control defrosting and fans You can use NTC Carel probes pressure transducers 4 20mA current inputs or no probes at all For NTC Carel probes bridge terminals 1 and 2 on pin strips P4 and PS In order to accept 4 20mA probes bridge terminals 2 and 3 on pin strips P4 and P5 If no sensors are used at all bridge the analog and set P4 and P5 in 1 2 position the defrosting procedure will be disabled as well as the use of the condensation removal fans In water Iwater heat pumps with gas reversibility the antifreeze condensation function will be disabled as well If NTC Carel probes are used on compressor start up the fans will be actuated for a time lapse equal to Fb independently of the condensation temperature this allows to anticipate the action of the compressor and improve the condensation regulation Minimum current input This parameter allows to set 4mA as the pressure value for the pressure probe Maximum current input This parameter allows to set 20mA as the pressure value for th
40. lletti Button Status of the unit Effect after pressing the button ja List of codes displays the codes of the parameters Displays values increases value List of codes displays the codes of the parameters Displays values decreases value PRG SEL Normal operating condition after 5 password for FACTORY parameters SEL si Normal operating condition after 5 forces a manual defrosting cycle Normal operating condition deletes alarms if any CLEAR 2 i Hour counter hour counter reset immediately PRG At start up default parameters PRG e At start up copies key on the unit s EEprom PRG At start up copies key on the unit s EEprom Normal operating condition selects heating mode Heating Normal operating condition selects cooling mode Cooling Always adjusts display contrast MUTE Always silences the buzzer 3 6 Inputs and Outputs Here below you will find the list of inputs outputs with their relative connectors Connector Meaning B1 GND Evaporator inlet water temperature probe water water units Ambient air temperature probe air air units B2 GND Evaporator outlet water temperature probe circuit1 antifreeze Supporting heaters control probe air air units B3 GND Condensation control probe circuit1 for fans speed regulation in chiller mode or for the control of defrosting in hea
41. mode In two compressor units this parameter allows to set two compressors or one compressor with capacity controlled routine When using one capacity controlled compressor the alarm inputs relative to the second compressor will not be used and B4 and B5 measurement will not be detected Rotation is disabled In single compressor units the expansion board must not be installed the H4 parameter is used to enable the control of possible Tandem compressors operating in parallel in the same circuit With this configuration the pump output PUMP silk screened directly on the board is activated besides in the typical modes indicated in H5 parameter also when activating the antifreeze heaters both in normal operating and in stand by the output RES1 is used to manage the second compressor In Tandem units compressors are activated as in normal operating mode at 50 and at 100 of the differential with a time based rotation every 30 seconds the activation priority is inverted in case of defrost the activation of both compressors is forced The rest of features performed is as equal as the standard algorithm followed for 2 Compressor machines RG66000889 REV 00 27 H5 Operating logic of the Pump It sets the operating logic of the water circulation pump The pump can be disabled always ON or ON upon a call from the regulator in this case the pump will be the first device to start followed by the compressors With disabled pump th
42. mp acqua uscita evaporatore 1 Evap 1 outlet water temperature Temperatura pressione cond 1 Cond 1 temperature pressure Alimentazione per sonde di pressione Pressure trand power supply Alla scheda ventilatori condensatore 1 To condensator 1 fan card DOO sana 2000 3 ON 2 ON VdNOD VS3U o 2000 Alta pressione C1 High pressure C1 Bassa pressione C1 Low pressure C1 Termico compressore 1 Overload compressor 1 Termico vent C1 Fine sbrin C1 Overload fan C1 Defrost ter C1 N 2 ON LANTVA did 23 ON 10 90 SOI 0 cot ZO LUI Woodi DN 3 ON Temp acqua uscita evaporatore 2 Evap 2 outlet water temperature Temperatura pressione cond 2 Cond 2 temperature pressure Alimentazione per sonde di pressione Pressure trand power supply m Alla scheda ventilatori condensatore 2 To condensator 2 fan card AI 58 OND 18 GND Alta pressione C2 High pressure C2 Bassa pressione C2 Low pressure C2 Termico compressore 2 Overload compressor 2 Termico vent C2 Fine sbrin C2 Overload fan C2 Defrost ter C2 LG OIG 6G 80 24Vac il comune proviene dalla scheda monocompressore 24Vac reference internally supplied bysingle compressor card RG66000889 REV 00 33 If 2 terminals local or remote are connected to the same single compressor board they need to be addressed therefore set the two deep switches called address placed on the terminals to 01 the dip switch which is placed in the
43. mpressor parameters c c1 Minimum ON time It sets the time interval when the compressor must go on operating after it has been turned ON even if there is no more request for it Compressor Min On time interval c2 Minimum stopping time It sets the time interval when the compressor must remain OFF after it has been turned OFF even if there is a request for its turning on During this phase the LED relative to the compressor blinks Compressor Min Off time interval c3 Time interval between two successive ON routines It sets the minimum off time interval between two successive ON routines of the same compressor it indicates the maximum number of ON routines per hour During this phase the LED relative to the compressor blinks Compressor Min time interval between 2 ON routines RG66000889 REV 00 19 c4 Time delay between the ON routines of the compressors time delay of the capacity controlled routine It allows to set the minimum time interval between the ON routines of the two compressors so as to reduce inrush consumption In a capacity controlled compressor this parameter indicates the time delay before the actuation of the capacity controlled routine During this phase the LED relative to the compressor blinks Signal 1 Signal 2 Compressor 1 Compressor 2 Time delay between the compressors ON routine c5 Time delay before the OFF routines of the 2 Compr Time delay befo
44. n not be reset until the temperature exceeds the set point differential value A1 A2 A3 Time to bypass the antifreeze low ambient temperature alarm at start up in Winter operating mode In the event of an antifreeze alarm condition this parameter allows to turn on the unit for a specific time interval only in Winter operating mode since the unit heats water air Should the alarm persists after the A3 time has passed the unit will automatically turn OFF A4 Set point for the activation of antifreeze supporting heaters Indicates the threshold below which the antifreeze heater will be activated also when the unit is in stand by With ON OFF B2 and B4 inputs the antifreeze alarm and the heaters will be activated through an open contact In 2 compressor units or in units with 1 compressor with capacity controlled routine 2 steps have been devised for the activation of support heaters each with a width equal to one half of the differential A5 with ON OFF B1 and B2 inputs and with the variation of parameter A6 the low ambient temperature alarm and the support heaters will be activated through an open contact RG66000889 REV 00 25 A5 Antifreeze It indicates the differential controlling the ON OFF status of the antifreeze heaters Carel NTC Probes Antifreeze gamm differern Agtfeezg heaters Heaters Antifreeze Antifreeze alarm set point Antifreeze heaters set A6 Support heater probe It indicates t
45. obes FA Temperature pressure at which the fans turn OFF Heating mode If the system includes a speed regulator to control the fans this parameter allows to set the temperature or pressure above which the fans are turned OFF in order to avoid overload for the compressor due to high evaporating temperatures For Heating activation there is a pre differential with respect to the set point of 1 C when using NTC probes for the control of condensation B3 and B5 and of 0 5Bar when using pressure probes Fb Fans starting time It allows to set the max speed of the fans during starting in order to overcome the mechanical inertia of the motor If Fb 0 this function is ignored that is the fans are activated at the minimum speed and then controlled according to the condensing temperature pressure The same timing is respected when the compressor is turned on independently of the condenser temperature pressure if the NTC probes for the control of condensation have been selected and the speed regulation has been enabled F2 2 so as to prevent the sudden increase in pressure that does not necessary correspond to an increasing of the temperature in the place where the probe is located and improve the control action Defrosting parameters d d1 Defrosting ON condensation antifreeze For heat pumps with air condensation H1 1 3 it sets whether a defrosting control in the outdoor coil must be effected evaporator in Heating operating mode
46. ow and green LED indicators on the main board The yellow LED indicator informs the User of the correct operating of the unit During normal operation it blinks every 1 second In case of alarm condition it flashes more rapidly about 2 times per second In case of LED off the unit is disconnected from power supply The green LED indicates that communication between unit and remote terminal is OK In case of communication failure the green LED turns off usually due to a problem with the cable or to a not good contact between the cable and its relative female telephone connector on the main board or on the terminal RG66000889 REV 00 5 AIR CONDITIONING 3 2 Keypad The keypad allows to set the function parameters of the unit In the wall mounting remote version it is composed of several buttons to easy the use The performance functions of each button will be indicated here below 98 060688600 3 3 Buttons and relative messages on display Setting and displaying the set point and the main control parameters DIRECT parameters 99 000004000 uchiller a The DIRECT parameters are set points Cooling and Heating and main control parameters of the unit Cooling and Heating differentials 1 and 2 circuit water temperature 1 and 2 circuit condensation temperature pressure If you press SEL for more than 5 seconds the display shows the code of the first parameter the Cooling set point that can be modified Pressing
47. peed cooling mode It indicates the temperature or pressure below which the fans are activated at minimum speed In ON OFF regulation models this parameter indicates the temperature or pressure below which the fans are stopped F6 Temperature pressure for maximum Summer speed cooling mode It indicates the temperature or pressure above which the fans must be activated at maximum speed In models with ON OFF regulation this parameter indicates the temperature or pressure above which the fans are actuated F7 Temperature pressure for minimum Winter speed heating mode It indicates the temperature or pressure above which the fans are activated at minimum speed In ON OFF regulation models this parameter indicates the temperature or pressure above which the fans are stopped F8 Temperature pressure for maximum Winter speed heating mode It indicates the temperature or pressure below which the fans must be activated at maximum speed In with ON OFF regulation models this parameter indicates the temperature or pressure below which the fans are actuated F9 Temperature pressure at which the fans turn OFF Cooling mode If the system includes a speed regulator to control the fans this parameter allows to set the temperature or pressure below which the fans are turned OFF For Cooling activation there is a post differential with respect to the set point of 1 C when using NTC probes B3 and B5 and of 0 5Bar when using pressure pr
48. pment Categ of heat and fire resistance D PTI of the of the insulating materials 250V Class and structure of the software A Serial output Connector 3 way screw terminals for cables with 0 2mm min section and 1 5mm max section Optoinsulated asynchronous RS485 Transfer rate 19200 baud Device maximum number 199 Max distance from the supervisor 1 Km Cable to be utilized 1 shielded and braided couple AWG20 22 Protection against the electric shocks The device assures only a functional insulation between the pchiller supply source and the serial line therefore the supply transformer of the uchiller must be of the safety type Example of chiller network RG66000889 REV 00 cod CAREL PC485KIT00 Serial Converter 485 r 35 9 Technical specifications Single compressor board Power source 24Vac 10 15 at 50 60Hz protected with a fuse located on the board 250Vac 2A delayed Number of cards Min power supply required 1 compressor 17VA 1 2 compr s 25VA 1 compr terminal 19VA 1 2 compr s terminal 27VA 1 compr 2 terminals 22VA 1 2 compr s 2 terminals 30VA Analog inputs no 3 B1 B2 and B3 selectable to accept either Carel NTC probes range 40 C 90 C or ON OFF contacts no 2 B4 and B5 selectable to accept either Carel NTC probes or 4 20mA pressure transducers Digital inputs no 7 on single compressor board
49. r units with only one fan circuit after 60s the fans do not stop but are managed according to the circuit temperature pressure where the alarm condition is not present Low pressure The alarm condition is detected only if the relative compressor is ON independently of the status of the pump The compressors are forced into the OFF mode immediately previously set protection time intervals are ignored and at the same time the buzzer the alarm relay and the lighting of the display are activated The parameter P7 allows the activation of the low pressure alarm if the measured pressure is less than 1bar after the P3 delay RG66000889 REV 00 29 Compressor overload The alarm condition is detected independently of the status of the pump and of the compressors The compressors are forced into the OFF mode previously set protection time intervals are ignored and at the same time the buzzer the alarm relay and the lighting of the display are activated Condenser fan overload The alarm condition is detected independently of the status of the pump and of the compressors The fan and the compressor are forced into the OFF mode previously set protection time intervals for the compressor are ignored and at the same time the buzzer the alarm relay and the lighting of the display are activated The control of units with air condensation H1 0 1 2 or 3 the condensation probes 3 _0 as well as the condensation removal fans F1 1 must be enabled
50. rds 2 5mm Min cable section only remoting modules 0 2mm Max cable section only remoting modules 1 5mm Class of control according to protection against electric shock class or Il No of automatic cycles A for each automatic action 100 000 Ageing period 60 000h Type of the action disconnection provided by each circuit 1B PTI of materials used for insulation 250volt Period of electric stress across insulating parts long Minimum and or max rates of change of activating quantity 35s in ventilated air Electronic control to be supplied to manufacturers installers maintenance service Heat and fire resistance category D Type of wave output modulating signal with open collector 20mA 5V Surge immunity category 1 Classe e struttura del software class A RG66000889 REV 00 37 RG66000889 REV 00 38 AGalletti RG66000889 REV 00 39 AGalletti AIR C O N D I TI ON I NG 40010 Bentivoglio BO Via Romagnoli 12 a Tel 051 8908111 Fax 051 8908122 www galletti it
51. re the capacity controlled routine It allows to set the minimum time interval between the two compressors OFF routines In a capacity control led compressor this parameter indicates the time delay before stopping the capacity controlled routine Signal 1 Signal 2 Compressor 1 Compressor 2 Time delay between the compressors OFF c6 Delay at start up This parameter allows to set a time delay at the compressors start up so as to balance current absorption and to protect the compressor s from repeated start ups when there is some interruption in the power supply c7 Delay in switching ON compressor after switching ON the pump inlet fan AIR AIR Both in the Cooling and Heating operating mode with the pump actuated upon request of the controller parameter H5 2 if the compressors activation is required the controller will first actuate the pump and then the compressors If the pump inlet fan is always on H5 1 it will start only when you start the unit when you select Cooling Heating and the time delay will never be enabled Compressor Time delay between pump fun and compressor RG66000889 REV OO 20 AGalletti c8 Delay in switching OFF compressor after Switching OFF the pump Both in the Cooling and Heating operating mode with the pump or inlet fan actuated upon request of the controller parameter H5 2 if the compressors deactivation is required the controller will first deactivate the compressor
52. re the following clockwise analog inputs B4 and B5 for the probes connection relative to the second circuit 24V terminal with D C for the supply of any pressure probe e digital inputs from ID8 to ID11 for safety connections relative to the second circuit e digital relay outputs to manage any controlled device the Y2 GND analog output for the connection of the optional boards for the management of condensation fans ON OFF regulation mode or with continuous rotation speed variation the flat cable for the connection to the single compressor main board P1 pin strip relative to the Y2 analog output to be normally left open except in particular situations see parameters F3 and F4 oo Pt RES 2 COMP 2 VALVE2 Te aL O ifi ili on oo 6 DOOOO0OCODO0DO OOOOOODDOOOOO RG66000889 REV OO 4 AGalletti AIR CONDITIONING 3 User Interface Terminal The terminal allows the access to the data of the unit The terminal can be supplied either in panel mounting version or for remote connection in wall mounting version On the terminal there are 5 LED indicators to indicate the status of the unit Cooling Heating the status of the compressors ON OFF and the timer for compressors pump after 100 operating hours The wall mounted version moreover can be remoted up to 150m through an optional board to be placed near the single compressor board An internal buzzer which c
53. s and then the pump inlet fan in air air units If the pump or inlet fan is always on H5 1 turning OFF the unit will automatically stop the pump Compresso Pump lntel Fan Time delay between pump intel fun and compressor c9 Timer of compressor no 1 It indicates the operating hours of the first compressor When the value is being displayed press simultaneously a and 5 to reset the timer In this way the controller will not prompt the maintenance message cA Timer of compressor no 2 It indicates the operating hours of the second compressor When the value is being displayed press simultaneously a and to reset the timer In this way request for maintenance will not appear cb Timer threshold during normal operation It allows to set a threshold operating hours of the compressor after which the controller will prompt a request for maintenance If cb 0 this function will be ignored cC Timer of pump Inlet fan AIR AIR It allows to set a threshold operating hours for the pump or the inlet fan When the value is being displayed press simultaneously and to reset the timer Fans parameters F F1 Fans output Determines the operating logic of the fans Ono fans no control action relative to fan overload 1 system with fans This selection requires the presence of the optional boards for the management of fans ON OFF or speed variation F2 Operating logic of the fans It sets the oper
54. s parameters in EEprom then displays Displays values temperature value of sensor B1 Buzzer sounds silences the buzzer Normal operating condition after 5 enables inhibits Cooling mode 4 List of codes displays the codes of the parameters Displays values increases value Normal operating condition after 5 enables inhibits Heating mode List of codes displays the codes of the parameters Displays values decreases value PRG SEL Normal operating condition after 5 password for FACTORY parameters 4 Normal operating condition temperature pressure i SEL L co after 5 forces a manual defrosting cycle conditions permitting a he Normal operating condition after 5 manual alarm reset i Hour counter zeroes down immediately PRG At start up default parameters PRG At start up copies key on the unit s EEprom PRG At start up copies key on the unit s EEprom 3 5 Functions of the buttons wall mounted units The table below sums up the action of each button Button Status of the unit Effect after pressing the button Normal operating condition after 5 DIRECT parameters appear SEL List of codes displays values Displays values displays list of codes Normal operating condition after 5 password for USER parameters stores parameters in EEprom then displays PRG List of odes temperature value of sensor B1 stores parameters in EEprom then displays Displays values temperature value of sensor B1 RG66000889 REV OO 10 AGa
55. s to the FACTORY set parameters press PRG and SEL together for 5 seconds Digit the password available on request then press SEL Probe parameters A 12 Type of probe at evaporator inlet B1 This parameter indicates the type of temperature probe to be placed at the evaporator inlet It is possible to use either a Carel NTC probe or a ON OFF contact operated by a thermostat It is necessary to have a software and a hardware compatible If you are using a NTC probe bridge terminal 1 and 2 on pin strip P1 With an ON OFF probe P1 with terminal 2 and 3 bridged inputs detected as closed require the activation of outputs both in the Cooling and in the Heating operating modes the message On will be displayed to indicate the unit is operating OF means input detected open In AIR AIR units with two compressors if the B1 ambient air probe is selected in ON OFF mode the B4 probe will be automatically selected in ON OFF mode so as to allow the control of both compressors through an ambient thermostat with 2 Contacts Condensing unit function mode Type of probe at 1st and 2nd evap outlet B2 and B4 This parameters indicates the type of probe to measure water temperature at the evaporator outlet B2 and B4 It is possible to use either a Carel NTC probe or a ON OFF contact operated by a thermostat It is necessary to have a software and a hardware compatible If you are using a NTC probe bridge terminals 1 and 2 on pin str
56. t pump mode B4 GND Evap outlet water temp probe circuit 2 antifreeze B5 GND Condensation control probe circuit 2 for fan speed regulation in chiller mode or for the control of defrosting in heat pump mode ID1 IDCOM High pressure circuit 1 ID2 IDCOM Low pressure circuit 1 ID3 IDCOM Compressor overload circuit 1 Overload condenser fan circuit 1 Pee Circuit 1 defrost end ID5 IDCOM Water flow detector in water chillers Inlet fan overload air air ID6 IDCOM Remote ON OFF ID7 IDCOM Remote Cooling Heating selection ID8 IDCOM High pressure circuit 2 ID9 IDCOM Low pressure circuit 2 ID10 IDCOM Compressor overload circuit 2 Overload condensation fan circuit 2 IDTIDCOM Circuit 2 defrost end Y1 GND PWM analog output for condensation removal fan circuit 1 Y2 GND PWM analog output for condensation removal fan circuit 2 Antifreeze heater circuit1 water chillers RES 1 Supporting heater heating no 1 air air Compressor Tandem 2 COMP 1 Compressor circuit 1 VALVE 1 Reverse cycle valve circuit 1 PUMP Water pump water chillers Inlet air fan air air ALARM General alarm remote signal RES 2 Antifreeze heater circuit 2 water chillers Supporting heater heating no 2 air air COMP 2 Compressor circuit 2 VALVE 2 Reverse cycle valve circuit 2 RG66000889 REV 00 11 4 Parameters There are 3 groups of parameters DIRECT D directly accessible USER U accessible via password 22 FACTORY F acc
57. th the heat pump selection lower than 1bar obviously the presence of the condenser pressure probes must be enabled parameter 3 and the low pressure alarm is activated by maintaining in any case the possible delay P3 If P7 0 such operating is disabled General parameters H H1 Machine model It allows to select the type of machine to be controlled Unit lt 2 AIR AIR unit only cooling not applicable AIR AIR heat pump not applicable AIR WATER chiller AIR WATER heat pump WATER WATER chiller WATER WATER heat pump with gas reversibility WATER WATER heat pump with water reversibility Motocondensing unit CO N OD I1 gt 6 N O Motocondensing unit with reversing refrigerant cycle H2 Number of ventilating circuits It indicates the number of fan circuits in two compressor configurations When there is 1 fan circuit selected the unit will activate the control of fans on the basis of the higher temperature pressure in the 2 circuits The Y1 output is managed in parallel with Y2 therefore it is possible to connect two fan regulation boards increasing the size of the fans that can be managed by uchiller H3 Number of evaporators It indicates the number of evaporators in two compressor configurations When there is one evaporator heaters management and antifreeze control will be performed only by B2 H4 Capacity controlled Compressors in parallel
58. the and buttons allows to scroll all direct parameters Press SEL again to display the reguired DIRECT parameter and modify its value with the a and lo buttons Press PRG to store the modified parameters and exit the procedure while the SEL button allows to return to the DIRECT parameters menu On setting the parameters the display will automatically flash after a few seconds if no buttons are pressed If you do not press any button within 60 seconds after having entered this procedure the unit will return to normal operation without storing the values of the modified parameters Setting and displaying USER parameters uchiller These working parameters are protected by a password 22 to prevent any unauthorized access to the data Press PRG for more than 5 seconds the buzzer must be off to enter the USER parameters the unit operating parameters menu Setting the password 00 blinks on the display Use the and buttons to select the password value or if the password is correct 22 press SEL to enter the USER parameter section On setting the password the display will automatically flash after a few seconds if no buttons are pressed USER parameters selection the display shows the code of the User parameter that can be modified Pressing the a and lo buttons allows to scroll all User parameters Press SEL again to display the required User parameter and modify its value with the a and o buttons Press
59. time if you set P4 15 the buzzer will not stop until the alarm condition disappears P5 Reset alarms It allows to enable an automatic reset for all those alarms which normally have a manual reset high pressure low pressure flows witch and antifreeze according to the table here below Value Selection 0 default High pressure low pressure and antifreeze low temperature with manual reset 1 All alarms with automatic reset P6 Second set of parameters If P6 1 it allows to activate a second set of DIRECT USER and FACTORY parameters in such a situation the following parameters turn from U level as indicated in the table of parameters in this manual to F level which is accessible through user password parameters from 6 to C included parameters r from rA to rd included parameters c from c1 to c3 included parameters F they all turn to F level parameters d they all turn to F level parameters A they all turn to F level parameters P from P1 to P3 included parameters H remain unaltered RG66000889 REV OO 26 AGalletti If P6 1 the operating logic of the cooling heater selection is reversed both by keypad infrared remote controller and digital input Symbol P6 0 P6 1 Cooling chiller Heating heat pump Heating heat pump Cooling chiller P7 Low pressure alarm with pressure probe If P7 1 wi
60. tional use of an optional electronic serial card makes it possible to be linked to a centralized computer so as to obtain remote supervisory and or telemaintenance services 2 General Description 2 1 Functions uchiller is a multi processor system designed for the control of e air water chillers air water heat pumps water water chillers water water heat pumps with gas reversibility water water motoevaporating units uchiller is based on two integrated systems the Base section including controller inputs and outputs and the terminal section with User Interface functions The Base and Terminal components can be enhanced by adding optional boards allowing further auxiliary functions 2 2 Main Board The main board represents the core of the system where the signals coming from the probes are processed The modular structure of the microprocessor board allows to get great flexibility and high performance The compressor board can be upgraded by adding a module for the regulation of the capacity controlled routine of the compressor or for the management of a second circuit and compressor On this board you can locate clockwise the following connection areas e Gand GO terminals for power source connection 24Vac e ERB B analog inputs from B1 to B3 for probe connection D di ss e 24V terminal with D C for the supply of pressure probes Ho Rici o e digital inputs from ID1 to ID7 for alarm connection e jumper

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