Home

User manual

1. m si Unit of Default Ana l Supervisor R Menu description Extended description Min max limits ine Access nt Dig address RW Inv selection Select type of reverse cycle for water water units WATER WATER manufacturer GAS Comp circuits Total number of compressors number of refrigerant circuits on unit A 1 1 manufacturer number 2 1 3 1 2 2 4 2 6 2 Rotation Select type of compressor refrigerant circuit rotation LI F O LIF O manufacturer INT 30 RW F LF 0 IME Evaporator Select number of evaporators 1 manufacturer number 2 Remote Select type of condensing unit control from analogue input STEPS STEPS manufacturer compressor control PROPORTIONAL management Type EVD400 drivers Number of EVD400 drivers connected 0to4 0 manufacturer INT 31 RW number Reversal cycle 4 way valve operating logic for the reversal of the refrigerant water LC NO manufacturer DIG 4 RW valve logic circuit 0 Pumps number Number of evaporator pumps 1to2 1 manufacturer Rotation type Select type of evaporator pump rotation STARTS STARTS manufacturer TIME Pumps Fan Evaporator pump main fan operating mode ALWAYS OFF ALWAYS manufacturer INT 32 RW running mode ALWAYS ON ON ON WITH COMP ON ON OFF BURST Condenser pump Condenser pump operating mode ALWAYS OFF ALWAYS manufacturer running mode ALWAYS ON ON ON WITH COMP ON Pumps Fan ON time in burst operation 0 t
2. B1 Condensing temperature circuit 1 Evaporation pressure circuit 1 B2 Condensing temperature circuit 2 Evaporation pressure circuit 2 B3 Condensing pressure circuit 1 B4 Condensing pressure circuit 2 B5 B6 B7 Outside temperature B8 Remote set point B9 B10 DIGITAL OUTPUTS 01 Compressor 1 circuit 1 Winding A compressor 1 circuit 1 02 Compressor 2 circuit 1 Winding B compressor 1 circuit 1 Part load compressor 1 circuit 1 03 Liquid solenoid circuit 1 Compressor 3 circuit 1 Part load compressor 1 circuit 1 Condenser fan 2 circuit 1 04 Condenser fan 1 circuit 1 05 06 Compressor 1 circuit 2 Winding A compressor 1 circuit 2 07 Compressor 2 circuit 2 Winding B compressor 1 circuit 2 Compressor 1 capacity control circuit 2 08 Liquid solenoid circuit 2 Compressor 3 circuit 2 Compressor 1 capacity control circuit 2 Condenser fan 2 circuit 2 09 Condenser fan 1 circuit 2 Condenser fan 2 circuit 1 010 General alarm 011 012 013 014 ANALOGUE OUTPUTS Y1 0 to 10 V condenser fan inverter circuit 1 Y2 0 to 10 V condenser fan inverter circuit 2 Y3 PWM condenser fan inverter circuit 1 Y4 PWM condenser fan inverter circuit 2 Y5 Y6 Important uC3 If using a single condenser with 2 fans configured and 3 compressors configured in the event of step control the dedicated outputs will be number 4 and number 9 030220431 rel 1 1 10 10 06 69 8 4 2 Cooling Heat
3. am m sui Unit of Default Ana l Supervisor R Menu description Extended description Min max limits hassu Access nt Dig address RW Enable probe B9 T out ev 1 bab AU A N Y N manufacturer DIG 19 RW B9 Not used p p Enable probe B10 T out ev 2 ee dee mdd a N Y N manufacturer DIG 20 RW B10 Not used p p B DEI 9 inimum end scale configuration for analogue input B1 30 0 to 150 0 bar 0 5 manufacturer B mm 19 laximum end scale configuration for analogue input B1 0 0 to 150 0 bar 7 0 manufacturer UR 19 inimum end scale configuration for analogue input B2 30 0 to 150 0 bar 0 5 manufacturer ee 19 laximum end scale configuration for analogue input B2 0 0 to 150 0 bar 7 0 manufacturer n E inimum end scale configuration for analogue input B3 30 0 to 150 0 bar 0 0 manufacturer RAE 19 laximum end scale configuration for analogue input B3 0 0 to 150 0 bar 30 0 manufacturer it 9 inimum end scale configuration for analogue input B4 30 0 to 150 0 bar 0 0 manufacturer oe 9 laximum end scale configuration for analogue input B4 0 0 to 150 0 bar 30 0 manufacturer oe a inimum end scale configuration for analogue input B8 30 0 to 150 0 C 0 0 manufacturer oe ES laximum end scale configuration for analogue input B8 0 0 to 150 0 C 100 0 manufacturer Analog inputs 182 BOILER TEMP BOILER coni rm Configuration of analogue inputs B1 and B2 CONDENSE TEMP TEMPERAT manufacturer INT 1 RW y EVAP PRESS URE PART LOAD ONLY PART
4. B1 Condensing temperature circuit 1 Evaporation pressure circuit 1 B2 Condensing temperature circuit 2 Evaporation pressure circuit 2 B3 Condensing pressure circuit 1 B4 Condensing pressure circuit 2 B5 B6 B7 Outside temperature B8 Remote set pointl B9 B10 DIGITAL OUTPUTS 01 Compressor 1 circuit 1 Winding A compressor 1 circuit 1 02 Compressor 2 circuit 1 Winding B compressor 1 circuit 1 Part load compressor 1 circuit 1 03 Liquid solenoid circuit 1 Compressor 3 circuit 1 Part load compressor 1 circuit 1 condenser fan 2 circuit 1 04 Condenser fan 1 circuit 1 05 06 Compressor 1 circuit 2 Winding A compressor 1 circuit 2 07 Compressor 2 circuit 2 Winding B compressor 1 circuit 2 Compressor 1 capacity control circuit 2 08 Liquid solenoid circuit 2 Compressor 3 circuit 2 Compressor 1 capacity control circuit 2 Condenser fan 2 circuit 2 09 Condenser fan 1 circuit 2 Condenser fan 2 circuit 1 010 General alarm 011 012 013 4 way valve circuit 1 014 4 way valve circuit 2 ANALOGUE OUTPUTS Y1 0 to 10 V condenser fan inverter circuit 1 Y2 0 to 10 V condenser fan inverter circuit 2 Y3 PWM condenser fan inverter circuit 1 Y4 PWM condenser fan inverter circuit 2 Y5 Y6 Important uC3 If using a single condenser with 2 fans configured and 3 compressors configured in the event of step control the dedicated outputs will be number 4 and number 9 Note Part Winding management has been added to all unit config
5. 55 710 Electric eater ita Ue qa Pn rtc Xe ple Ee UD IR cR ERU UE eie Lied e poen adr ee eee 56 TAL Selecting the operating mode erret tnter rtr OR RER ERR eater 57 7 12 ON OFF time bands meteo ee eget dte te Eee dde ese eoe ae ee ngog eee dere aurea ened 57 LA REPE 58 7 14 Condenser evaporator Control erorteko at presas palta alas isa 59 15 BreventTfUnCctioDz tere p HER ERE n b DUE Pe 61 7 16 Low noise function isole iaia iore Sen eee da debe see ee dne Ped exe eau alia gala 61 7 17 Start withihot icondenset isa E Eee a ee 61 P deldellud Ug p 62 8 1 PA E EI TREES TITO TUERI ITE 62 8 2 Air E WalterMhlte stc cotes en o Leve ree I banded SRI AI TAO dade rest Led TS TIRI abs aa as 64 8 3 Water Water RTI TUTTA 66 8 4 Air cooled condernsing Units etitm ep a ted dee eta et P tiep Seid eee diee 69 9 ALARMS usina a 71 9 1 Table oralaMSitr a a s EUH nale 71 9 2 Type of alarm reseta sce A E 73 9 3 Ali os 73 9 4 Flow switch alartm iaa A via Ces Qo al ae edv i 73 9 5 Circulating pump thermal overload alarm sse eene nennen nnn enne e enn nennen enne nnns 74 9 6 Condenser fan thermal overload alarm enne nnne nennen nnns nnn ne rns n ese nsns inset r sn sss nnne sese esses nna nnns 74 9 7 Antifreeze alarmi uaar 74 10 CONNECTIONS
6. 030220431 rel 1 1 10 10 06 49 controlled values occurs within certain limits dictated by the compressors and load steps installed as for inlet temperature led temperature he temperature control functions uc3 e Compressor 3 circuit 1 Liquid solenoid circuit 1 B31 Compressor 1 capacity control if Part Winding enabled e Compressor 1 circuit 2 Winding A compressor 2 B34 e Compressor 2 circuit 2 Compressor 2 capacity control B35 Winding B compressor 2 e Compressor 3 circuit 2 Liquid solenoid circuit 2 B36 Compressor 2 capacity control if Part Winding enabled Description of operation Condensing unit control involves the devices being called by a proportional voltage or current signal supplied by an external controller or alternatively a series of electromechanical contacts via digital input As the compressors are called by an external controller the corresponding control probes and parameters are not used Control with analogue input The signal acquired by analogue input B8 is 4 to 20mA There are two control modes proportional or steps these can be selected via the dedicated user parameter Proportional control Below is a description of the operation of proportional control when a 4 to 20 mA analogue input is used The compressor requests depend on the analogue input B8 with continuous variation of the input signal the board calculates the number of steps required based on the value of the sign
7. Force tandem trio compressors in FIFO rotation For these types of compressors the aim is to avoid the operation of circuits at part load for excessive periods affecting the operation of the compressors that are off A maximum part load operating time has been introduced after which the active compressor is stopped and the demand is transferred to another compressor in the same circuit If no compressors are available when the exchange in condition occurs the operation of the circuit remains unchanged The activation of an alarm on the compressor being forced on will involve a return to the previous operating conditions The count time for forcing the compressor on is reset whenever an alarm occurs in the circuit 7 6 Compressor safety times Inputs used e Compressor 1 thermal overload circuit 1 B17 e Compressor 2 thermal overload circuit 1 B18 e Compressor 3 thermal overload circuit 1 units with trio compressors B26 e Compressor 1 thermal overload circuit 2 B22 e Compressor 2 thermal overload circuit 2 B23 e Compressor 3 thermal overload circuit 2 units with trio compressors B27 Parameters used e Minimum compressor on time c e Minimum compressor off time c e Minimum time between starts of different compressors c e Minimum time between starts of the same compressor c Outputs used e Liquid solenoid circuit 1 B31 e Liquid solenoid circuit 2 B36 e Compressor 1 circuit 1 Winding A compressor 1 B29 e Com
8. E A L 19 B group relays T NL LEGGI E CONSERVA QUESTE ISTRUZIONI 4 READ AND SAVE THESE INSTRUCTIONS CAREL Tecnologia ed Evoluzione LEGGI E CONSERVA gt QUESTE ISTRUZIONI lt READ AND SAVE THESE INSTRUCTIONS We wish to save you time and money We can assure you that the thorough reading of this manual will guarantee correct installation and safe use of the product described IMPORTANT WARNINGS BEFORE INSTALLING OR HANDLING THE DEVICE PLEASE CAREFULLY READ AND FOLLOW THE INSTRUCTIONS DESCRIBED IN THIS MANUAL This device has been manufactured to operate risk free for its specific purpose as long as itis installed operated and maintained according to the instructions contained in this manual the environmental conditions and the voltage of the power supply correspond to those specified All other uses and modifications made to the device that are not authorised by the manufacturer are considered incorrect Liability for injury or damage caused by the incorrect use of the device lies exclusively with the user Please note that this unit contains powered electrical devices and therefore all service and maintenance operations must be performed by specialist and qualified personnel who are aware of the necessary precautions Disconnect the unit from the mains power supply before accessing any internal parts INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE ELECTRICAL AND ELECTRON
9. e Enable compressor capacity control C e Select type of compressor refrigerant circuit rotation H e Enable operation of compressor 1 circuit 1 C e Enable operation of compressor 2 circuit 1 C e Enable operation of compressor 3 circuit 1 C e Enable operation of compressor 1 circuit 2 C e Enable operation of compressor 2 circuit 2 C e Enable operation of compressor 3 circuit 2 C e Manually force compressor 1 circuit 1 C e Manually force compressor 2 circuit 1 C e Manually force compressor 3 circuit 1 C e Manually force compressor 1 circuit 2 C e Manually force compressor 2 circuit 2 C e Manually force compressor 3 circuit 2 C Outputs used e Liquid solenoid circuit 1 B31 e Liquid solenoid circuit 2 B36 e Compressor 1 circuit 1 B29 Winding A compressor 1 e Compressor 2 circuit 1 Compressor 1 capacity control B30 Winding B compressor 1 030220431 rel 1 1 10 10 06 51 uc3 e Compressor 3 circuit 1 B31 Compressor 1 capacity control if Part Winding enabled e Compressor 1 circuit 2 Winding A compressor 2 B34 e Compressor 2 circuit 2 Compressor 2 capacity control Winding B compressor 2 B35 e Compressor 3 circuit 2 B36 Compressor 2 capacity control if Part Winding enabled The compressor calls are rotated so as to balance out the number of operating hours and starts of the devices There are three different types of rotation available e LIFO e ELFO e Bytime Rotation is only perf
10. 030220431 rel 1 1 10 10 06 68 uC3 8 4 84 1 Air cooled condensing units Cooling only DIGITAL INPUTS Serious alarm Remote ON OFF with digital controls Serious alarm with analogue control D2 Compressor 1 control with digital controls Not used with analogue control D3 Compressor 2 control with digital controls Remote ON OFF with analogue control D4 Compressor 3 control with tandem circuits and with digital controls Compressor 3 and 4 control with trio circuits and with digital controls Not used with analogue control D5 Low pressure switch circuit 1 D6 High pressure switch circui D7 Compressor 1 thermal overload circuit 1 D8 Compressor 2 thermal overload circuit 1 D9 Condenser fan 1 thermal overload circuit 1 D10 Low pressure switch circuit 2 D11 High pressure switch circuit 2 D12 Compressor 1 thermal overload circuit 2 D13 Compressor 2 thermal overload circuit 2 D14 Condenser fan 1 thermal overload circuit 2 D15 D16 Compressor 3 thermal overload circuit 1 Condenser fan 2 thermal overload circuit 1 D17 Compressor 3 thermal overload circuit 2 Condenser fan 2 thermal overload circuit 2 D18 Compressor 4 control with tandem circuits and with digital controls Compressor 5 and 6 control with trio circuits and with digital controls Not used with analogue control ANALOGUE INPUTS
11. 2 evaporators cece ee eeeeee ates cece eeeeaaeeeeeeeeeceaaeceeeeeeeeseceeeeeeseseecasaeeeeeeeseesuaeees 16 3 16 WATER WATER heat pumps with reversal on the refrigerant circuit single CIFCUI t i 16 3 17 WATER WATER heat pumps with reversal on the refrigerant circuit two circuits 17 3 18 WATER WATER heat pumps with reversal on the refrigerant circuit two circuits 1 evaporator 17 3 19 WATER WATER heat pumps with reversal on the water circuit single circuit i 18 3 20 WATER WATER heat pumps with reversal on the water circuit two circuits HO2 1 and H21 4 18 3 21 WATER WATER heat pumps with reversal on the water circuit two circuits 1 evaporator HO2 1 and H21 4 19 3 22 Air cooled condensing unit without reverse cycle single circuit ene eene nennen 19 3 23 Air cooled condensing unit without reverse cycle two circuits ooooooooonnoccnonoccccnanonnnononancnnnnonn nc nano enn enne nennen enn 20 3 24 Reverse cycle air cooled condensing unit single circuit sssssseeeeeeenen enn eene enne enne nnne enn 20 3 25 Reverse cycle air cooled condensing unit two circuits with condenser fan circuit i 21 3 26 Water cooled condensing unit without reverse cycle single circuit i 21 3 27 Water cooled condensing unit without reverse cycle two circuits sese enn eene nennen nnne 22 3 28 Reverse
12. 24 Vdc Vac VDC Power output for 24 Vdc active probes 5VR Power output for 5 Vdc ratiometric probes VZC 24 Vac zero crossing for the PWM phase control analogue outputs The use of some inputs outp Other specifications uts depends on the configuration of the parameters uC3 running through the storage conditions 20T70 90 RH non condensing operating conditions 10T55 90 RH non condensing index of protection IP20 or IPOO version without plastic case environmental pollution normal class of protection against electric shock to be integrated in Class and or Il appliances PTI of the insulating materials 250 V period of stress across the insulating parts long type of action 1C type of disconnection or microswitching microswitching category of resistance to heat and fire category D UL94 V0 immunity against voltage surges 100 000 EN 60730 1 30 000 UL 873 no of automatic operating cycles software class and structure category 1 Class A The device is not designed to be he held WARNINGS when programming the parameters with the key the controller must be disconnected form the power supply and any other devices he 24 Vdc available at the Vdc terminal can be used to supply an 4 to 20 mA active probe the maximum current is 100 mA The 5 Vdc available at the 5VR terminals can be used to supply to the 0 to 5 V active ratiometric p
13. 25 a 2 E Exa st ra acdt linverter cond circ 1 lars 1 ole o gt em Fs mear 7051S a SS e a m za Z iud gt E Iwas e e eoon mm qnm z E evapor H20 flow E configurable H pump 1 overload Ls circ 1 low pressure 8 E remote ON OFF 2 e gt critical alarm Y5A e Y6A non collegate Fig 5 b Assembly for the version without the plastic case The uchiller should be installed on a 0 5 to 2 mm thick metal panel using the special spacers The electrical damage that occurs to electronic components is almost always due to electrostatic discharges caused by the operator Consequently suitable precautions must be taken when handling these components in particular before handling any electronic component or board touch an earthed object avoiding contact with a component is not sufficient as a 10 000 V discharge a voltage that can easily be reached by static electricity creates an arc of around 1 cm the materials must remain as long as possible inside their original packages If necessary remove the board from the packing and then place the product in antistatic packaging without touching the rear of the board always avoid using plastic polystyrene or non antistatic materials always avoid passing the board between operators to avoid the phenomena of electrostatic induction and consequent discharges special care must be taken when fitting the optional boa
14. 3 030220431 rel 1 1 10 10 06 64 8 2 2 Cooling Heat pump DIGITAL INPUTS D1 Serious alarm D2 Evaporator flow switch D3 Remote ON OFF D4 Main pump thermal overload D5 Low pressure switch circuit 1 D6 High pressure switch circuit 1 D7 Compressor 1 thermal overload circuit 1 D8 Compressor 2 thermal overload circuit 1 D9 Condenser fan 1 thermal overload circuit 1 D10 Low pressure switch circuit 2 D11 High pressure switch circuit 2 D12 Compressor 1 thermal overload circuit 2 D13 Compressor 2 thermal overload circuit 2 D14 Condenser fan 1 thermal overload circuit 2 D15 Select cooling heating D16 Compressor 3 thermal overload circuit 1 Condenser fan 2 thermal overload circuit 1 D17 Compressor 3 thermal overload circuit 2 Condenser fan 2 thermal overload circuit 2 D18 Evaporator pump 2 thermal overload ANALOGUE INPUTS B1 Condensing temperature circuit 1 Evaporation pressure circuit 1 External water storage temperature B2 Condensing temperature circuit 2 Evaporation pressure circuit 2 B3 Condensing pressure circuit 1 B4 Condensing pressure circuit 2 B5 Evaporator water inlet temperature B6 Water outlet temperature B7 Outside temperature B8 Remote set point B9 Evaporator 1 water outlet temperature B10 Evaporator 2 water outlet temperature DIGITAL OUTPUTS 01 Comp
15. DF SuperHeat set C2 Settable SuperHeat set point in defrost mode circuit 2 2 0 to 50 0 C manufacturer DF Low SuperHeat C2 Low SuperHeat from autosetup C manufacturer Auto DF Low SuperHeat C2 Settable low SuperHeat in defrost mode circuit 2 4 0 to 21 0 C manufacturer SHeat dead zone SuperHeat dead zone from autosetup C manufacturer Auto SHeat dead zone Settable SuperHeat dead zone 0 0 to 9 9 C manufacturer Derivative time Derivative time from autosetup S manufacturer Auto Derivative time Settable derivative time 0 to 999 S manufacturer Low SHeat int time Low SuperHeat integral time from autosetup S manufacturer Auto Low SHeat int time Settable integral time low SuperHeat 0 0 to 30 0 S manufacturer LOP integral time LOP integral time from autosetup S manufacturer Auto LOP integral time Settable LOP integral time 0 0 to 25 5 s manufacturer OP integral time MOP integral time from autosetup S manufacturer Auto OP integral time Settable MOP integral time 0 0 to 25 5 s manufacturer OP startup delay Start MOP delay from autosetup S manufacturer Auto OP startup delay Settable start MOP delay 0 to 500 S manufacturer Dynamic proportional Select dynamic proportional control mode 0to1 manufacturer DIG 168 RW gain Blocked valve check EEV stop control from autosetup S manufacturer Auto Blocked valve check Settable EEV stop control 0 to 999 S manufacturer Hi TCond protection High condensing temperature alarm from autosetup C manufacturer
16. Speed up time HP preven Enable high pressure prevent N Y N manufacturer Enabled HP preven Select the prevent probe PRESSURE PRESSURE manufacturer Probe TEMPERATURE HP preven High pressure prevent set point cooling 99 9 to 99 9 C bar 20 0 user cooling mode Setpoint HP preven High pressure prevent differential cooling 0 to 99 9 C bar 2 0 user cooling mode Diff LP prevent Low pressure prevent set point heating 99 9 to 99 9 C bar 3 0 user heating mode Setpoint 030220431 rel 1 1 10 10 06 36 UCI e m Ww Unit of Default Ana l Supervisor R Menu description Extended description Min max limits massi Access nt Dig address RW LP prevent Low pressure prevent differential heating 0 to 99 9 C bar 2 0 user heating mode Diff Fan run Condenser operating mode in the event of probe fault FORCE OFF FORCE ON user INT 40 RW with condensation FORCE ON WITH COMP ON WITH probe fault COMP ON Prevent output Delay to exit the prevent function 0 to 999 S 0 User INT 41 RW delay Low noise Start hour for low noise operation 0 to 23 h 0 user Start hour Low noise Start minutes for low noise operation 0 to 59 min 0 user Start hour Low noise End hour for low noise operation 0 to 23 h 0 user End hour Low noise
17. Valve 4way circ 1 Po Water in valve 4 way valve for reversing the water circuit water water units d ud pus Status of digital output 14 a 4 way valve for reversing the refrigerant circuit in circuit 2 DIG 38 R Valve 4way circ 2 C Condenser pump water water units ondenser pump Analog outputs Status grana Qgue Quipu 1 V ANA 55 R LEE Condenser fans circuit 1 Fan circuit 1 Analog outputs Statusi tana ague QUIM 2 V ANA 56 R es Condenser fans circuit 2 Fan circuit 2 Met Status of analogue output 5 V Evap pump 2 Evaporator pump 2 030220431 rel 1 1 10 10 06 31 UCI Menu description Extended description Min max limits DI Default Access Bid Sai uM COOLING Driver mode Active operating mode circuit 1 HEATING direct T 05 R DEFROST EEV Mode Activate manual control driver 1 reading 0 to DIG 60 RW EEV Position Read position of valve 0 to 9999 T 97 R Power request Read capacity request for driver 1 0 to 100 T 01 R Driver2 mode Active operating mode circuit 1 COOLING T 05 R HEATING DEFROST EEV Mode Activate man
18. i 9 S z Imc circ 1 4 ways valve y Site 1 4 ways valve 4 El s 3 nes I s 2 compressor y olm p Compressors igs Cak compressor 4 p s isst 7 circ 2 fan 2 overload sw configurable B A sere heating cooling select circ 2 fan 1 x I er E S circ 2 pesa 2 dui Hea circ 2 high pressure Z Zu M j J comp 3 overload 2 ciro2 comp 1 overload HAH sw configurable aja I sw configurable 2 pump 2 overload aja r v g 1 H gt gt Fe Pell wo OLS T 5 neg pag 3 J E l T pmp gyi 4 pump 2 o 5 lj 5 FSTEN a sia evapor 2 gt lt gt lt a un sla a LH outlet water temp n S Stop evapor 1 Ed e n E SS q outet water temp Ba n oS tH L F c 7 E L aj gt RoE wo ajm m EET l compressor 1 O a circ 1 comp 2 overload y Compressor y E Z Z rt o pi compressor 2 HEA r EAS comp 1 overload x LA sw configurable L clo circ 1 fan 1 overload z T3 u ala 9 7 S pi circ 1 fan 1 L Erli o aE o m na i inverter cond circ 2 l c gt 1 gt wo O 4 o alz 2 2 1 E z 3 az gE 3 S SEE Pa TE gt Se t inlet water temp SE N Mes lu E 3 x x y St 3 outlet water temp external temp _ N circ 2 CHE T m condens pressure C Hy NYI T circ 1 N I 1 DI a O pressure E Pu and i sw configurable 5 BET eBis E i l a5 alL E remote set point i i gt ajo TH o ng mia y i iy 5 a z p
19. 1 x 1000 0 to 999 h user INT 66 R Compressor 2 operating hours circuit 1 0 to 999 h user INT 67 R Comp 3 circ 1 hour meter Operating hour threshold alarm compressor 3 circuit 1 x 1000 0 to 999 h 10 user Threshold Reset Reset compressor 3 operating hours circuit 1 0to1 user Compressor 3 operating hours circuit 1 x 1000 0 to 999 h User INT 68 R Compressor 3 operating hours circuit 1 0 to 999 h User INT 69 R Comp 1 circ 2 hour meter Operating hour threshold alarm compressor 1 circuit 2 x 1000 0 to 999 h 10 user Threshold Reset Reset compressor 1 operating hours circuit 2 Dto 1 user Compressor 1 operating hours circuit 2 x 1000 0 to 999 h User INT 70 R Compressor 1 operating hours circuit 2 0 to 999 h User INT 7 R Comp 2 circ 2 hour meter Operating hour threshold alarm compressor 2 circuit 2 x 1000 0 to 999 h 10 user Threshold Reset Reset compressor 2 operating hours circuit 2 0to1 user Compressor 2 operating hours circuit 2 x 1000 0 to 999 h user INT 72 R Compressor 2 operating hours circuit 2 0 to 999 h user INT 73 R Comp 3 circ 2 hour meter Operating hour threshold alarm compressor 3 circuit 2 x 1000 0 to 999 h 10 user Threshold Reset Reset compressor 3 operating hours circuit 2 Dto 1 user Compressor 3 operating hours circuit 2 x 1000 0 to 999 h user INT 74 R Compressor 3 operating hours circuit 2 0 to 999 h user INT 75 R Rotation m Tandem trio compressor rotation delay in part load operation 1 to 180 min 20 user compressors Compressors enab
20. 10 06 37 UCI Menu description Extended description Min max limits mator Default Access Bie e si Outlet Minimum time between stops with outlet control 0 to 9999 S 10 manufacturer 46 RW regulation Min time OFF Outlet regulation Differential for calculating the time between steps with outlet control 99 9 to 99 9 C 2 0 manufacturer ANA 31 RW Request time variation differential Temperature Select reference value for temperature contro CONTROL PROBE CONTROL manufacturer 47 RW regulation type OUTSIDE TEMP CONTROL PROBE Force OFF Forced shutdown threshold with outlet control cooling 99 9 to 99 9 C 5 0 manufacturer ANA 32 RW outlet regulation Summer Force OFF Forced shutdown threshold with outlet control heating 99 9 to 99 9 SC 47 0 manufacturer outlet regulation Winter External temp limit Outside temperature set point limit 99 9 to 99 9 C 10 0 user ANA 33 RW Setpoin External temp limit Outside temperature differential limit 9 9 to 9 9 C 2 0 user ANA 34 RW Differential Clock config Hour setting 0 to 23 h INT 49 RW Hour Clock config inutes setting 0 to 59 min INT 48 RW Hour Clock config Day setting 1 to 31 day Date Clock config onth setting 1
21. 9 C barg manufacturer 82 Drv 1 probes offse Probe S3 offset driver 1 9 9 to 9 9 C barg manufacturer S3 Drv 2 probes offse Probe 1 offset driver 2 9 9 to 9 9 C barg manufacturer 1 Drv 2 probes offse Probe S2 offset driver 2 9 9 to 9 9 C barg manufacturer 82 Drv 2 probes offse Probe S3 offset driver 2 9 9 to 9 9 C barg manufacturer S3 Drv 3 probes offse Probe S1 offset driver 3 9 9 to 9 9 C barg manufacturer S1 Drv 3 probes offse Probe S2 offset driver 3 9 9 to 9 9 C barg manufacturer 82 Drv 3 probes offse Probe S3 offset driver 3 9 9 to 9 9 C barg manufacturer 3 Drv 4 probes offse Probe S1 offset driver 4 9 9 to 9 9 C barg manufacturer 1 Drv 4 probes offse Probe S2 offset driver 4 9 9 to 9 9 C barg manufacturer 82 Drv 5 probes offse Probe S3 offset driver 4 9 9 to 9 9 C barg manufacturer S3 Circuit EEV Ratio Valve opening percentage when starting 0 to 100 96 manufacturer INT 88 RW or startup opening Compressor or Uni ype of compressor uni Not selected manufacturer INT 89 RW RECIPROCATING SCREW SCROLL QUICK CASE COLD RM CASE COLD ROOM Capacity control Type of capacity control if present ot selected manufacturer INT 90 RW O STEPS SLOW CONTINUOUS FAST CONTINUOUS Evaporator type Type of evaporator used in chiller mode ot selected manufacturer INT 91 RW Cool FINS PLATES TUBES FAST FINNED SLOW FINNED Evaporator type Type of evaporator used in heat pump mode ot selected manufacturer INT
22. 9 to 99 9 C B9 Value of analogue input B9 99 9 to 99 9 C B10 Value of analogue input B10 99 9 to 99 9 C B11 Status of digital input 1 B12 Status of digital input 2 B14 Status of digital input 4 B15 Status of digital input 5 B16 Status of digital input 6 B17 Status of digital input 7 B18 Status of digital input 8 B19 Status of digital input 9 B20 Status of digital input 10 B21 Status of digital input 11 B22 Status of digital input 12 B23 Status of digital input 13 B24 Status of digital input 14 B25 Status of digital input 15 B26 Status of digital input 16 B27 Status of digital input 17 B28 Status of digital input 18 B29 Status of digital output 1 B30 Status of digital output 2 B31 Status of digital output 3 B32 Status of digital output 4 B33 Status of digital output 5 B34 Status of digital output 6 B35 Status of digital output 7 B36 Status of digital output 8 B37 Status of digital output 9 B38 Status of digital output 10 B39 Status of digital output 11 B40 Status of digital output 12 B41 Status of digital output 13 direct B42 Status of digital output 14 B43 Status of analogue output 1 0 0 V B44 Status of analogue output 2 0 0 V B45 Status of analogue output 5 0 0 V c parameters compressors cl Condenser pump operating hours x 1000 0 to 999 h c2 Condenser pump operating hours 0 to 999 h c3 Evaporator pump main fan operating hours x 1000 0 to 999 h c4 Evaporator pump main fan operating hours 0 to 999 h c5 Evaporator pump
23. 92 RW Heat FINS PLATES TUBES FAST FINNED SLOW FINNED inimum satured temp inimum saturated temperature in chiller mode 70 0 to 50 0 C manufacturer ANA 82 RW Cool mode inimum satured temp inimum saturated temperature in heat pump mode 70 0 to 50 0 C manufacturer ANA 83 RW Heat mode inimum satured temp inimum saturated temperature in defrost mode 70 0 to 50 0 C manufacturer ANA 84 RW Defr Mode laximum satured temp laximum saturated temperature in chiller mode 50 0 to 90 0 C manufacturer ANA 85 RW Cool mode laximum satured temp laximum saturated temperature in heat pump mode 50 0 to 90 0 C manufacturer ANA 86 RW Heat mode laximum satured temp laximum saturated temperature in defrost mode 50 0 to 90 0 C manufacturer ANA 87 RW Defr Mode High SuperHeat Current high SuperHeat alarm threshold C manufacturer alarm threshold Auto High SuperHeat Settable high SuperHeat alarm threshold 0 0 to 100 0 C manufacturer ANA 88 RW alarm threshold 030220431 rel 1 1 10 10 06 42 uc3 5 Connections Assembly instructions Maximum NTC ratiometric probe connection cable length 10 m Maximum digital input connection cable length 10 m Maximum power output connection cable length 5 m Maximum fan control output connection cable length 5 m Maximum power cable length 3 m Power supply A Class Il safety transformer with a minimum rating of 50 VA must be used in the installation to supply just one uchiller The power s
24. A different cooling and heating set point must be set for each period total of 8 parameters plus the start and end times of the bands Setting the same start and end times is equivalent to disabling the function for that period of time 7 13 Antifreeze control Inputs used e Evaporator water outlet temperature B6 e Evaporator 1 water outlet temperature B9 e Evaporator 2 water outlet temperature B10 Parameters used e Enable analogue probe 6 Evaporator water outlet temperature e Antifreeze alarm set point chiller units A1 e Antifreeze alarm differential chiller units A2 e Minimum antifreeze low room temperature set point limit A e Maximum antifreeze low room temperature set point limit A e Type of antifreeze alarm reset A e Antifreeze alarm delay when starting manual reset A e Device start mode in antifreeze with unit off A12 Outputs used e Generic alarm B38 General information The antifreeze function is based on the reading made by the temperature probes located on the evaporator outlet The function is different for units with one or two water circuits with the antifreeze control based on the readings of the following inputs respectively e B6 single circuit units e B9 B10 two circuit units FA AFH i l K DIFF_AF y kx DIFFAFH y EOWT C THRA_F THR_AFH Fig 7 n THRA F Antifreeze alarm set point DIFF AF Antifreeze alarm differential FA Antifreeze alarm THR AFH Antifreeze heater set
25. Condenser fan overload 1 Condenser fan overload 2 ot Flussostato Ventilatore 1 Fan 1 Flow switch Ventilatore 2 Fan 2 Sonda condensatore 1 Condenser 1 probe p oa oE Sonda condensatore 2 Condenser 2 probe B3 4 Outlet temp probe B7 8 B5 Sonda uscita evaporatore 1 Outlet evaporator probe 1 B6 Sonda uscita evaporatore 2 Outlet evaporator probe 2 Evaporatore 1 Evaporator 1 Valvola inversione 1 Reversing valve 1 Evaporatore 2 Evaporator 2 Valvola inversione 2 Reversing valve 2 Resistenza antigelo 1 Antifreeze heater 1 Resistenza antigelo 2 Antifreeze heater 2 Compressore 1 ci Compressore 1 cir Compressor 1 Inlet evaporator probe E H E Compressor 1 Sonda ingresso evaporatore Pompa dell acqua Water pump l Alta pressione 1 Bassa pressione 1 Bassa pressione 2 Alta pressione 2 High pressure 1 Low pressure 1 Low pressure 2 High pressure 2 Termico comp 1 Termico comp 2 Comp 1 overload Comp 2 overload Compressore2 _Circ 1 Compressore2 Circ 2 Compressor 2 Compressor 2 Compressore3 Circ 1 Compressore 3 Circo Compressor 3 Compressor 3 Fig 3 a m 3 12 AIR WATER heat pumps two circuits 1 condenser fan circuit Sonda condensatore 1 Condenser 1 probe Sonda condensatore 2 Condenser 2 probe B3 4 Termico ventilatore condensatore 1 B7 8 Condenser fan overload 1 Ventilatore 1 Fan 1 Flussostato Flow switch Sonda temp di mandata Outl
26. Driver 4 LOP timeout DRV Settable X Stops the corresponding circui A076 Driver 1 low superheat DRV Settable X Stops the corresponding circui A077 Driver 2 low superheat DRV Settable X Stops the corresponding circui A078 Driver 3 low superheat DRV Settable X Stops the corresponding circui A079 Driver 4 low superheat DRV Settable X Stops the corresponding circui A080 Driver 1 EEV not closed when power DRV X Preven s the corresponding circuit from OFF starting A081 Driver 2 EEV not closed when power DRV X Preven s the corresponding circuit from OFF starting A082 Driver 3 EEV not closed when power DRV X Preven s the corresponding circuit from OFF starting A083 Driver 4 EEV not closed when power DRV X Preven s the corresponding circuit from OFF starting A084 Driver 1 high superheat DRV Settable X Stops the corresponding circui A085 Driver 2 high superheat DRV Settable X Stops the corresponding circui A086 Driver 3 high superheat DRV Settable X Stops the corresponding circui A087 Driver 4 high superheat DRV Settable X Stops the corresponding circui A088 Driver 1 probe S1 faul DRV X Stops the corresponding circui A089 Driver 2 probe S1 faul DRV X Stops the corresponding circui A090 Driver 3 probe S1 faul DRV X Stops the corresponding circui A091 Driver 4 probe S1 faul DRV X Stops the corresponding circui A092 Driver 1 probe S2 faul DRV X Stops the corresponding circui A093 Driver 2 probe S2 faul DRV X Stops the c
27. M 9 2 Type of alarm reset The reset mode can be set for some of the alarms listed in the table choosing between automatic and manual o Compressor thermal overload o Fanthermal overload o Low pressure from transducer and or pressure switch o High pressure from transducer and or pressure switch If automatic reset is selected a maximum number of events with automatic reset and maximum period of validity can be set with the time counted from the activation of the first alarm If after this period the maximum number of repeats of a certain event is not reached the timer is reset and the next alarm will start a new count If the maximum number N of repeats set is reached within the set time then the next event N 1 will be with manual reset requiring the operator to intervene to restore the operation of the unit If manual reset is set then each alarm event requires the intervention of the operator to restore the operation of the unit 9 3 Alarm log The alarm log is included to save the fundamental unit operating values in response to certain events All the unit operating and configuration parameters are available to the user for the configuration of the log The WinLoad32 exe program supplied by Carel SpA is used to configure the log for the instructions on using the program see the guide available on line 9 4 Flow switch alarm Inputs used e Air flow switch air air units B12 Evaporator water flow switch Parameters
28. comp 1 Compressor 1 capacity control if Part Winding enabled 4 6 di Kr ej Status of digital output 4 3 f Fan 1 circuit DIG 28 R ot used mde gt Defrost heater circuit Defrost res circ 1 4 6 di 6 digou puis Status of digital output 5 ain fan ain fan air air units DIG 29 R Evaporator pump cused Evaporator pump 1 4 6 dig outputs Status of digital output 6 Comp 1 circ 2 Compressor 1 circuit 2 DIG 30 R Winding A comp 2 Winding A compressor 2 7 9 dig outputs Status of digital output 7 Comp 2 circ 2 Compressor 2 circuit 2 DIG 31 R Unload comp 2 Compressor 2 capacity control Winding B comp 2 Winding B compressor 2 7 9 dig outplts Status of digital output 8 Ld Evaporator pump 2 Evaporator pump 2 Fan 2 circuit 2 Cond fan 2 circ 2 fe DIG 32 R Comp 3 circ 2 Compressor 3 circuit 2 So bod DS 2 Liquid solenoid circuit 2 Unload comp 2 Compressor 2 capacity control if Part Winding enabled ae Status of digital output 9 3 AS Fan 2 circuit 1 single condenser Cond fan 1 circ 2 SS DIG 33 R Not used Fan 1 circuit 2 2 condensers Defrost teg he Defrost heater circuit 2 0 12 dig outputs Status of digital output 10 DIG 34 R General alarm Generic alarm 0 12 dig outputs a Antifreeze heater1 Status or digital output DIG 35 R at Heater 1 0 12 dig outputs T Antifreeze heater2 Status uh ogra Gutput 12 DIG 36 R Heater 2 ot used i i pus Status of digital output 13 y 4 way valve for reversing the refrigerant circuit in circuit 1 DIG 37 R
29. configure all the unit parameters not only from the keypad on the front panel but also using a hardware key or via a serial line 1 2 User interface pLD large terminal The display has 4 digits plus decimal point In normal operation the value shown on the display corresponds to the temperature read by the control probe for example the evaporator water inlet temperature on water chillers or alternatively the room temperature on direct expansion units Up button enters the password Heat button enters the parameters menu if protected menu and scrolls the already in the menu goes back one level at Prg button enters the parameters menu if already in the menu goes back one level at z gt arameters a time until reaching the main screen p a time until reaching the main screen Amber LED Amber LED On pump on Green LED x On parameters menu On parameters menu Off pump off p Off other menu Off other menu Flashing pump alarm Alarm button displays the alarm menu Red LED a A On alarm active E Log 5 vs l ES ES zl Off no alarm C35 Vine ely al Iw Cool button activates HP mode On off button switches the Green LED unit on off On HP mode Red LED Off chiller mode On unit on Off unit off Sel button selects the chosen parameter Down button enters the password protected menu and confirms the changes a
30. cooling r7 Minimum set point value from probe B8 heating r8 Maximum set point value from probe B8 heating r9 Enable control of the clock board t6 Enable set point time bands Lt Cooling set point in band 1 Heating set point in band 1 Cooling set point in band 2 Heating set point in band 2 Cooling set point in band 3 Heating set point in band 3 Cooling set point in band 4 Heating set point in band 4 t Enable set point compensation r11 Enable analogue probe 7 for outside air temperature Maximum compensation value r12 Minimum outside temperature for compensation in cooling r13 Maximum outside temperature for compensation in cooling r14 Minimum outside temperature for compensation in heating r15 e Maximum outside temperature for compensation in heating r16 Outputs used Setting the control set point from the screen The control set point can be set from the screen on the user interface Two distinct values need to be set respectively for cooling and heating operation if the unit features operation in chiller or heat pump mode Setting the remote analogue input set point When enabling control of input B8 for the management of the remote set point the setting made on the screen can be replaced with a set point calculated based on the 4 to 20 mA signal at the input to the board The lower and upper limits must be set for calculating the remote set point in cooling and or heati
31. cycle water cooled condensing unit single CIFCU t ii 22 3 29 Reverse cycle water cooled condensing unit two CIFCUI S i 23 dauid ig 24 4 1 Menu layout annie ie A lE ARL A eee ee es ne ie ee ae 24 4 2 List of parameters with the pLD user interface iii 25 4 3 List of parameters with the pGD user interface u ii 27 CONNECTIONS LEADER 43 DESCRIPTION OF THE MAIN FUNCTIONS eese eee enne nennen nnne nnne inii trin intensa intr niin sn th isse tnis antris inse tria sete n ir nn nennen 45 6 1 Controlset polht 5 2 ne et e tte Pe te alice EH p pa Li SED deae ee oe gas 45 6 2 Inlet room temperature control eee 46 DESCRIPTION OF OPERATION 5 2 enarrare a Da EIC Cs aga Leni deoa Ree E Redi 47 7 1 Outlet temperat te Control 35 2 5 222 8 93 200 s et LERNEN cerdos cdas 47 7 2 Differential Temperature CODnlrol 2 2 tL ti deed cob sere edera 49 7 3 Condensingiunit control EN 49 7 4 Compressor Fotatlono te eter ille crue E E iia 51 7 5 TANDEM TRIO compressor rotatiori cicl n 52 7 6 Compressor safety times tn Eee E E en eon eere ese Yao tecta cet erre E SERE SER ERBEN SER NEAR 52 7 7 Pumpdown management sesies dite cde cde teet dede a ded oe ne vede aede 54 7 8 Main pump MNAE MENE ico ani A Hated ce DA ZII rioni Pe Pages 55 7 9 PUMP TON E
32. devices to shutdown as described and does not require any action by the operator to reset the operation of the unit as soon as the temperature rises above the alarm set point differential the unit will restart automatically A start up configuration can be defined for the devices in the event of antifreeze alarms when the unit is off This function applies only to air water and water water units with the following options DISABLED the function is disabled consequently no load switches in response to an antifreeze alarm except for the alarm relay HEAT amp PUMP ON in response to an antifreeze alarm the antifreeze heater and the circulating pump are started HEAT amp UNIT ON in response to an antifreeze alarm the antifreeze heater and the entire unit are started in heat pump mode if operation in heating mode is featured HEATER ONLY ON in response to an antifreeze alarm the antifreeze heater heaters are started 3 030220431 rel 1 1 10 10 06 74 10 Connections accessories and options Dimensioni mm Dimensions mm Dima di foratura mm Drilling template mm 60 Fig 1 Distanziatore plastico Plastic spacer er 9 9 4 A 12 7 mm rS B 10 2 mm Cc 5 6 mm 4 75 mm a gm i 107 H BI Jm 4mm 9 l 9j al 1 A 4E O 0 AT n 107 52 59 C
33. l i chi Fig 2 SE Fig 3 11 Codes Code accessories C3 in plastic case complete single package MCH3010020 14C3 without plastic case multiple packs of 18 boards MCH3010001 C3 connector kit single package CH3CON000 14C3 connector kit multiple packs of 18 boards MCH3CON001 C3 cable kit 2 m single package MCH300CABO parameter programming key with external power supply MCH300KYA0 clock board PCO100CLKO optically isolated RS485 serial board PC0S004850 RS232 serial board for modems PCO100MDMO LON FTT10 STD serial board with LonMark chiller profile PCO10000F0 120x32 semi graphic terminal panel installation PGDOO00F00 12 Technical specifications Plastic case material technopolymer flame retardancy VO UL94 and 960 C IEC 695 ball pressure test 125 C resistance to creeping current gt 250V colour grey RAL7035 type of assembly Electrical specifications Power supply controller with standard terminal connected 22 to 38 Vdc or 24 Vac 15 50 60 Hz Maximum power input P 14 W Analogue inputs mounted on DIN rail as per DIN 43880 and CEI EN 50022 standards analogue conversion 10 bit A D converter built in CPU type 5 inputs B5 B6 B7 B9 and B10 CAREL NTC temperature sensors 50T90 C R T 10 kQ 25 C 2 inputs B3 and B4 sensors with 0 to 5 Vdc ratiometric signal 1 input B8 sensor with 4 to 20 mA current signal 2 inputs B1 and B2 NTC or 0 to 5 V can be configured by software ma
34. of the corresponding device The alarm affects the operation of the refrigerant circuit in different ways In general if in a certain refrigerant circuit due to one or more alarms the condenser fans are no longer available then the compressors are also switched off thus stopping the circuit so as to avoid dangerous situations of high pressure in the condenser 9 7 Antifreeze alarm The activation of the antifreeze alarm is based on a set point and differential if the water temperature falls below the set point the compressors are stopped immediately while the pump remains on to prevent the formation of ice The devices can only be restarted if the water temperature rises above the alarm set point differential The set point for the antifreeze alarm is limited by minimum and maximum values protected by manufacturer password so as to prevent the values being set at dangerous extreme unit operating conditions The alarm reset can be defined as manual or automatic Manual reset the activation of the antifreeze protection is delayed by a set time in minutes from when the unit starts to allow the unit time to move the water and reach steady operation the alarm causes the devices to shutdown as described and requires the operator to reset the unit from the user terminal the unit will only restart if the temperature has returned above the alarm set point differential Automatic reset the activation of the antifreeze protection causes the
35. of the devices and the activation of the reserve pump in this condition the alarm signal delay time in steady operation is re activated after which with the alarm active the unit is switched off Evaporator flow switch alarm intervention The evaporator flow switch intervention generates the EVAPORATOR FLOW SWITCH ALARM respecting the following time e Evaporator flow switch alarm delay at start up e Evaporator flow switch alarm delay in steady operation If there are 2 evaporator pumps the intervention of the flow switch causes the startup of the backup pump If after the Evaporator flow switch alarm delay at start up the flow switch signal is still present the EVAPORATOR FLOW SWITCH ALARM occurs and the unit is turned off The compressors after the startup of the backup pump remain still ON for a delay time in steady operation 3 030220431 rel 1 1 10 10 06 55 uc3 7 10 Electric heaters Inputs used e Room temperature air air units Evaporator water inlet temperature B5 e Air outlet temperature air air units Evaporator water outlet temperature B6 e Evaporator 1 water outlet temperature B9 e Evaporator 2 water outlet temperature B10 e Outside air temperature B7 e Boiler temperature B1 Parameters used e Select number of evaporators H e Type of temperature control r e Enable analogue probe 7 Outside air temperature HA e Enable analogue probe 1 Boiler temperature e Configuration of a
36. point in heating Enable control of the clock board Active operating mode chiller heat pump Outputs used Fan 1 circuit 1 Fan 2 circuit 1 Fan 2 circuit 1 1 condenser Fan 1 circuit 2 2 condensers Fan 2 circuit 2 Status of analogue output 1 Condenser fans circuit 1 Status of analogue output 2 Condenser fans circuit 2 Condenser evaporator on off linked to compressor operation The operation of the fans will be slaved exclusively to the operation of the compressors Compressor off fan off Compressor on fan on No pressure or temperature transducers need to be installed 3 030220431 rel 1 1 10 10 06 59 B1 B2 B3 F1 F2 F3 F4 F5 F6 t6 main B32 B31 B37 B37 B36 B43 B44 uc3 uc3 On off condenser evaporator operation linked to the pressure or temperature sensor reading The operation of the fans will be slaved to the operation of the compressors and the value read by the pressure or temperature sensors according to a set point and band with proportional control In cooling operation when the pressure temperature is less than or equal to the set point all the fans will be off when the pressure temperature rises to the set point band all the fans will be on In heating operation when the pressure temperature is greater than or equal to the set point all the fans will be off when the pressure temperature falls to the set point band all the fans will be on T
37. pressione 1 Bassa pres 1 Pompa dell acqua Bassa pres 2 Alta pressione 2 Highpressure 1 Low pressure 1 Water pump A N Lowpressure2 High pressure 2 Termico comp 1 Sar Termico comp 2 Comp 1 overload T Comp 2 overload A 2 Qi Compressore 2 Circ 2 ompressor 2 Compressor 2 Pompa dell acqua d Water pump Fig 3 a q 3 16 WATER WATER heat pumps with reversal on the refrigerant circuit single circuit Flussostato ba Flow switch B3 4 Sonda condensatore pe Condensator probe Sonda uscita evaporatore Condensatore Outlet evaporator probe Condenser Resistenza antigelo Antifeeze heater Valvola inversione Reversing valve gl Sonda ingresso evaporatore Inlet evaporator probe Compressore 1 Circ 1 A i Compressor 1 7 Pompa dell acqua Water pump Pompa dell acqua Water pump d N Alta pressione Bassa pressione High pressure Low pressure Termico comp Comp overload Le Compressore 2 Circ 1 Compressor 2 Fig 3 a r 030220431 rel 1 1 10 10 06 16 3 17 WATER WATER heat pumps with B3 ll Sonda temp acqua cond 1 x Water cond 1 temp probe Condensatore 1 Condenser 1 Resistenza antigelo 1 Antifreeze heater 1 Valvola inversione 1 Reversing valve 1 PS Compressore 1 cic Compressor 1 7 C ORI Alta pressione 1 Bassa pressione High pressure 1 Low pressure Termico comp 1 Comp 1 overload Le Compressore 2 Girc1 Compressor 2 7 Pompa dell acqua A Water
38. selected from the screen on the user interface or by the digital input if the reference temperature equals or exceeds the controlled temperature i e opposite to the unit operating mode the operation of the controller switches from error correction to amplification consequently the application of this type of control is designed for systems in which the variation in operating mode of the active unit Control is proportional according to the control band set The proportional control band is divided into a number of uniform steps equal to the total number o control The control set point is the rated temperature difference set The value controlled is the difference calculated between the reference temperature and the contro To select this type of control a special parameter is provided that indicates which signal is used by e Evaporatorinlet outlet control probe e Reference temperature Controlled temperature 7 3 Condensing unit control Inputs used e External control value condensing units e Condensing unit digital control 1 e Condensing unit digital control 2 e Condensing unit digital control 3 e Condensing unit digital control 4 Parameters used e Configure type of unit e Type of condensing unit control e Select proportional or Outputs used e Compressor 1 circuit step condensing unit control 1 Winding A compressor 1 e Compressor 2 circuit 1 Compressor 1 capacity control Winding B compressor 1
39. shutdown 7 9 Pump rotation Inputs used e Evaporator water flow switch B12 e Evaporator pump 1 thermal overload B14 e Evaporator pump 2 thermal overload B28 Parameters used e Number of evaporator pumps H e Select type of evaporator pump rotation H e Operating hour threshold for the rotation of the evaporator pumps H Outputs used e Evaporator pump 1 B33 e Evaporator pump 2 B36 If there are two circulating pumps on the unit the operation of these can be rotated in the following modes e Rotation at start when the unit is started the operation of the pumps is rotated so as to balance the number of starts stops of the devices e X Rotation by time a rotation time is established expressed in hours which when reached the devices are rotated so as to balance the number of operating hours of the devices Control of the second circulating pump in any case involves forced rotation in the event of an alarm event of one of the devices to ensure maximum continuity of operation Pump thermal overload alarm If a thermal overload alarm is activated on the active circulating pump the pump is stopped and the devices are rotated A further activation of the thermal overload alarm on the active reserve pump causes the total shutdown of the unit due to no other pump being available on power up and a new rotation is forced Evaporator flow switch alarm The activation of the evaporator flow switch alarm forces the rotation
40. to 12 month Date Clock config Year setting 0 to 99 year Date Time zones Enable unit ON OFF time bands 0to1 0 user On off uni Time zones Enable set point time bands 0to1 0 user Temp setpoint On off uni Band 1 First on hour in the day 0 to 23 h 0 user F1 10 On off uni Band 1 First on minutes in the day 0 to 59 min 0 user F1 10 On off uni Band 1 First off hour in the day 0 to 23 h 0 user E OFF On off uni Band 1 First off minutes in the day 0 to 59 min 0 user F1 1 OFF On off uni Band 1 Second on hour in the day 0 to 23 h 0 user F1 2 0 On off uni Band 1 Second on minutes in the day 0 to 59 min 0 user F1 2 0 On off uni Band 1 Second off hour in the day 0 to 23 h 0 user F1 2 OFF On off uni Band 1 Second off minutes in the day 0 to 59 min 0 user E 22 OFF On off uni Band 2 On hour in the day 0 to 23 h 0 user F20 On off uni Band 2 On minutes in the day 0 to 59 min 0 user F2 0 On off uni Band 2 Off hour in the day 0 to 23 h 0 user F2 OFF On off uni Band 2 Off minutes in the day 0 to 59 min 0 user F2 OFF On off uni Select band F1 F2 F3 or F4 for Monday F 0 user Lun F2 F3 FA On off uni Select band F1 F2 F3 or F4 for Tuesday F1 F2 F3 F4 0 user Tue On off uni Select band F1 F2 F3 or F4 for Wednesday F1 F2 F3 F4 0 user Wed On off uni Select band F1 F2 F3 or F4 for Thursday F1 F2 F3 F4 0 user Thu On off uni Select band F1 F2 F3 or F4 for Friday F1 F2 F3 F4 0 user Fri On off uni Select band F1 F2 F3 or F4
41. used e Number of evaporator pumps H e Evaporator flow switch alarm delay at start up P1 e Evaporator flow switch alarm delay in steady operation P2 Qutputs used e Evaporator pump 1 B33 e Evaporator pump 2 B36 e Generic alarm B38 The evaporator flow switch alarm disables the operation of the unit if there is no water or air in the main exchanger so as to prevent dangerous operating conditions with the compressors on and no water or air flow In Air water or Water water units if control of the second circulating pump is enabled as the flow switch alarm will cause the rotation of the pump in operation the program will attempt to recover the situation by starting the reserve device The alarm management features two delay times before activation e when the water circuit is first started e when the unit is in steady operation The activation of the reserve pump to restore an alarm situation resets the delay in steady operation after which any new alarm condition will cause the unit to shut down due to a serious water flow problem In general with the reserve circulating pump enabled the flow switch alarm can be activated two times in a row after which the unit is switched off due to the alarm 030220431 rel 1 1 10 10 06 73 c3 9 5 Circulating pump thermal overload alarm Inputs used e Evaporator pump 1 thermal overload B14 e Evaporator pump 2 thermal overload B28 Parameters used e Number evaporator pumps H Outp
42. user ANA 40 RW Winter Setpoint temp Start hour for set point band 4 0 to 23 h 0 user Start Time Z 4 Setpoint temp Start minutes for set point band 4 0 to 59 min 0 user Start Time Z 4 Setpoint temp Cooling set point in band 4 99 9 to 99 9 C 0 user ANA 41 RW Summer Setpoint temp Heating set point in band 4 99 9 to 99 9 C 0 user ANA 42 RW Winter Enable clock Enable control of the clock board Y N manufacturer board EVD type Type of EVD 400 driver connected to the uChiller3 board EVD400 pLAN EVD400 manufacturer 78 RW EVD400 tLAN tLAN EVD probes type Type of probes connected to the driver ot selected Not manufacturer 79 RW SHeat NTC P 4 20 mA selected SHeat NTC P rat SHeat NTC NTC SHeat Pt1000 P SHeat NTCht P rat PID Press PID NTC PID NTC HT PID Pt1000 PID direction Direction of PID control direct or reverse DIR DIR manufacturer DIG 164 RW REV step Maximum number of steps displayed for the type of valve selected manufacturer Valve type Type of valve selectable Not selected Not manufacturer INT 80 RW ALCO EX5 selected ALCO EX6 ALCO EX7 ALCO EX8 SPORLAN 0 5 20tons SPORLAN 25 30tons SPORLAN 50 250tons CAREL E2V P CAREL E2V A DANFOSS ETS50 AST g DANFOSS ETS100 AST g CUSTOM Bi flow valve Enable bi directional valve chiller heat pump operation on the same Y N manufacturer DIG 165 RW valve driver Refrigerant Set type of gas Used Pn b manufacturer INT 81 RW R22 R134a R404a R407c R410a R507c R290 R
43. water outlet temperature DIGITAL OUTPUTS 01 Compressor 1 circuit 1 Winding A compressor 1 circuit 1 02 Compressor 2 circuit 1 Winding B compressor 1 circuit 1 Part load compressor 1 circuit 1 03 Liquid solenoid circuit 1 Compressor 3 circuit 1 Part load compressor 1 circuit 1 04 05 Pump 06 Compressor 1 circuit 2 Winding A compressor 1 circuit 2 07 Compressor 2 circuit 2 Winding B compressor 1 circuit 2 Compressor 1 capacity control circuit 2 08 Liquid solenoid circuit 2 Compressor 3 circuit 2 Compressor 1 capacity control circuit 2 Pump 2 09 010 General alarm 011 Antifreeze heater circuit 1 012 Antifreeze heater circuit 2 Support heater in heating operation 013 Reversing valve 014 Condenser pump ANALOGUE OUTPUTS y1 Y2 Y3 Y4 Y5 Pump 2 Y6 030220431 rel 1 1 10 10 06 67 8 3 3 Cooling Heat pump with reversal on the refrigerant circuit DIGITAL INPUTS D1 Serious alarm D2 Evaporator flow switch D3 Remote ON OFF D4 Main pump thermal overload D5 Low pressure switch circuit 1 D6 High pressure switch circuit 1 D7 Compressor 1 thermal overload circuit 1 D8 Compressor 2 thermal overload circuit 1 D9 Condenser pump thermal overload D10 Low pressure switch circuit 2 D11 High pressure switch circuit 2 D12 Compressor 1 therma
44. 0 V condenser fan inverter circuit 2 Y3 PWM condenser fan inverter circuit 1 Y4 PWM condenser fan inverter circuit 2 y5 Y6 Important uC3 If using a single condenser with 2 fans configured and 3 compressors configured in the event of step control the dedicated outputs will be number 4 and number 9 030220431 rel 1 1 10 10 06 63 8 2 Air water units 8 2 1 Cooling only DIGITAL INPUTS D1 Serious alarm D2 Evaporator flow switch D3 Remote ON OFF D4 Main pump thermal overload D5 Low pressure switch circuit 1 D6 High pressure switch circuit 1 D7 Compressor 1 thermal overload circuit 1 D8 Compressor 2 thermal overload circuit 1 D9 Condenser fan 1 thermal overload circuit 1 D10 Low pressure switch circuit 2 D11 High pressure switch circuit 2 D12 Compressor 1 thermal overload circuit 2 D13 Compressor 2 thermal overload circuit 2 D14 Condenser fan 1 thermal overload circuit 2 D15 D16 Compressor 3 thermal overload circuit 1 Condenser fan 2 thermal overload circuit 1 D17 Compressor 3 thermal overload circuit 2 Condenser fan 2 thermal overload circuit 2 D18 Evaporator pump 2 thermal overload ANALOGUE INPUTS B1 Condensing temperature circuit 1 Evaporation pressure circuit 1 External water storage temperature B2 Condensing temperature circuit 2 Evaporation pressure circuit 2 B3 Condensing pressure circuit 1 B4 Condensing pressure c
45. 008 Evaporator pump 2 thermal overload D M x X x If alarm on all the pumps A009 Low pressure circ 1 Pressure switch DIN S S Start X teady operation A010 Low pressure circ 2 Pressure switch D S Wh mr X A011 High pressure circ 1 Pressure switch DI S X A012 High pressure circ 2 Pressure switch D S X A013 Compressor 1 thermal overload circuit 1 D S jy X A014 Compressor 2 thermal overload circuit 1 D S X A015 Compressor 3 thermal overload circuit 1 D S X A016 Compressor 1 thermal overload circuit 2 D S X A017 Compressor 2 thermal overload circuit 2 D S X A018 Compressor 3 thermal overload circuit 2 D S X A019 Fan 1 thermal overload circuit 1 D S x X If alarm on all the fans A020 Fan 2 thermal overload circuit 1 DI S x X If alarm on all the fans A021 Fan 1 thermal overload circuit 2 DI S x X If alarm on all the fans A022 Fan 2 thermal overload circuit 2 DI S x X If alarm on all the fans A023 High pressure circ 1 Transducer AIN X x If high pressure prevent disabled A024 High pressure circ 2 Transducer AIN X x If high pressure prevent disabled Operating mode can be A025 Probe B1 faulty or disconnected A 60s x x configured if used as condensing temperature Operating mode can be A026 Probe B2 faulty or disconnected A 60s x x configured if used as condensing temperature A027 Probe B3 faulty or disconnected A 60s x ne il confi
46. 045 Low pressure circ 2 Transducer A Steady X JDifferent delays and thresholds for chiller heat pump defrost operation A046 Low room temperature alarm A A047 Condenser pump operating hour sys threshold A048 Serious alarm from digital input D X A059 Test SMS on alarm sent successfully SYS TET A060 Driver 1 EEPROM error DRV X oT hecoresponding circuit fom 5 A061 Driver 2 EEPROM error DRV A Ran he corresponding ireuit rom S A062 Driver 3 EEPROM error DRV X O he cottesponding cire uit from I A063 Driver 4 EEPROM error DRV 5 aae he corresponding reu from D A064 Driver 1 EEV motor error DRV 0s X oa he corresponding circuitiirom D E p A065 Driver 2 EEV motor error DRV 0s x DN he corresponding CIKCUIERTOI D p A066 Driver 3 EEV motor error DRV 0s X si he corresponding circuit from D A067 Driver 4 EEV motor error DRV 0s A Mr ne OMe sponing CIGUIERTORS A068 Driver 1 MOP timeout DRV Settable X Stops the corresponding circui A069 Driver 2 MOP timeout DRV Settable X Stops the corresponding circui A070 Driver 3 MOP timeout DRV Settable X Stops the corresponding circui A071 Driver 4 MOP timeout DRV Settable X Stops the corresponding circui A072 Driver 1 LOP timeout DRV Settable X Stops the corresponding circui A073 Driver 2 LOP timeout DRV Settable X Stops the corresponding circui A074 Driver 3 LOP timeout DRV Settable X Stops the corresponding circui A075
47. 1 if a single power transformer is used for the chiller and the options to avoid damaging the controller all the GO pins on the various controllers or the boards must be connected to the same terminal on the secondary and all the G pins to the other terminal on the secondary resetting the polarity of G and GO for all the terminals the system made up of the control board and the other optional boards represents a control device to be incorporated into class or class II appliances 3 030220431 rel 1 1 10 10 06 43 uc3 Example of connection as proposed by the default configuration alam LI rr Lim antifreeze heater 2 4 1 a antifreeze heater 1 ele Lyp SRE heater P 5 c rad oj Z gt x lt gt lt olo ele eo 533 S md ad I SS o oio circ 2 4 ways valve S 2 z
48. 10 Calibration offset for analogue input B10 9 9 to 9 9 C 0 user A parameters antifreeze Al Antifreeze alarm set point chiller units 99 9 to 99 9 C 3 0 user low room temperature air air units A2 Antifreeze alarm differential chiller units 99 9 to 99 9 C 1 0 user Low room temperature air air units A3 Antifreeze heater set point 99 9 to 99 9 C 5 0 user A4 Antifreeze heater differential 99 9 to 99 9 C 1 0 user A5 Support heater set point in cooling mode 99 9 to 99 9 C 30 0 user A6 Heater differential support in cooling mode 99 9 to 99 9 C 1 0 user A7 Support heater 1 set point in heating mode 15 0 to 50 0 C 25 0 user A8 Support heater 1 differential in heating mode 0 0 to 10 0 C 5 0 user A9 Support heater 2 set point in heating mode 15 0 to 50 0 C 24 0 user A10 Support heater 2 differential in heating mode 0 0 to 10 0 C 5 0 user A11 Support heater activation delay in heating 0 to 60 min 15 user A12 Device start up mode in antifreeze with unit off DISABLED DISABLED user HEAT amp PUMP ON HEAT amp UNIT ON HEATER ONLY ON b parameters sensors B1 Value of analogue input B1 99 9 to 99 9 C bar B2 Value of analogue input B2 99 9 to 99 9 C bar B3 Value of analogue input B3 99 9 to 99 9 bar B4 Value of analogue input B4 99 9 to 99 9 bar B5 Value of analogue input B5 99 9 to 99 9 C B6 Value of analogue input B6 99 9 to 99 9 C B7 Value of analogue input B7 99 9 to 99 9 C B8 Value of analogue input B8 99
49. 2 Termico comp 1 Comp 1 overload Led Compressore2 Circ Compressor 2 Termico comp 2 Comp 2 overload Compressore 2 Circ 2 Compressor 2 Fig 3 b d 3 26 Water cooled condensing unit without reverse cycle single circuit Flussostato Flow switch B3 Sonda temp acqua cond Water cond temp probe Condensatore Condenser Compressore 1 cic 1 Compressor Alta pressione High pressure Bassa pressione Low pressure Termico comp Comp overload Compressore 2 Circ 1 Compressor 2 Fig 3 b e 3 030220431 rel 1 1 10 10 06 21 3 27 Water cooled condensing unit without reverse cycle two circuits Sonda temp acqua cond Water cond temp probe Flussostato Flow switch B7 Sonda temp acqua cond Water cond lemp probe Condensatore ndenser Condensatore Condenser Compressore 1 Circ 2 Compressor 1 gt Alta pressione 2 Bassa pressione 2 High pressure 2 Low pressure 2 Termico comp Comp overload Compressore 1 cic 4 Compressor 1 Alta pressione Bassa pressione High pressure Low pressure Termico comp Comp overload Compressore2 cjr 4 Compressore 2 Ciro 2 Compressor2 Compressor 2 Pompa dell acqua Water pump A Fig 3 b f 3 28 Reverse cycle water cooled condensing unit single circuit B3 Sonda condensatore Condensatore Condenser probe Condenser Resistenza antigelo Ant
50. 2 operating hours x 1000 0 to 999 h 030220431 rel 1 1 10 10 06 25 c3 pLD Extended description Min max limits Unit of measure Default Access c6 Evaporator pump 2 operating hours 0 to 999 h c7 Compressor 1 operating hours circuit 1 x 1000 0 to 999 h c8 Compressor 1 operating hours circuit 1 0 to 999 h c9 Compressor 2 operating hours circuit 1 x 1000 0 to 999 h c10 Compressor 2 operating hours circuit 1 0 to 999 h c11 Compressor 3 operating hours circuit 1 x 1000 0 to 999 h c12 Compressor 3 operating hours circuit 1 0 to 999 h c13 Compressor 1 operating hours circuit 2 x 1000 0 to 999 h c14 Compressor 1 operating hours circuit 2 0 to 999 h c15 Compressor 2 operating hours circuit 2 x 1000 0 to 999 h c16 Compressor 2 operating hours circuit 2 0 to 999 h c17 Compressor 3 operating hours circuit 2 x 1000 0 to 999 h c18 Compressor 3 operating hours circuit 2 0 to 999 h c19 anually force compressor 1 circuit 1 Y User c20 anually force compressor 2 circuit 1 Y user c21 anually force compressor 3 circuit 1 Y user c22 anually force compressor 1 circuit 2 Y user c23 anually force compressor 2 circuit 2 Y user c24 anually force compressor 3 circuit 2 Y user d parameters defrost di
51. 600 R600a R717 R744 Custom valve config inimum number of steps for custom valve 0 to 8100 0 manufacturer inimum steps Custom valve config laximum number of steps for custom valve 0 to 8100 0 manufacturer laximum steps Custom valve config Total number of steps for custom valve 0 to 8100 0 manufacturer Closing steps Custom valve config Use extra opening step on custom valve N Y N manufacturer DIG 166 RW Opening EXTRAs Custom valve config Use extra closing step on custom valve N Y N manufacturer DIG 167 RW Closing EXTRAs Custom valve config Operating current of the custom valve 0 to 1000 mA 0 manufacturer Phase current Custom valve config Holding current of the custom valve 0 to 1000 mA 0 manufacturer Still curren Custom valve config mpulse frequency of the custom valve 32 to 501 Hz 0 manufacturer Step rate Custom valve config Duty cycle of the custom valve 0 to 100 0 manufacturer Duty cycle EEV stand by steps Position valve with capacity request equal to 0 0 to 8100 0 manufacturer INT 82 RW EEV position with 0 power demand 030220431 rel 1 1 10 10 06 39 UCI a m 7 E Unit of Default Ana l Supervisor R Menu description Extended description Min max limits e
52. ACCESSORIES AND OPTIONS rrrrrrr rire 75 11 CODES ii science p ian 75 12 TECHNICAL SPECIFICATIONS 4C3 1 Introduction 1 1 General description The uC is a new compact CAREL electronic controller measuring the size of a normal thermostat for the complete management of chillers and heat pumps it can control air air air water water water and condensing units Main functions e Temperature control for air air units air water cooled chillers heat pumps with two circuits and up to 6 steps with and without reversal on the water refrigerant circuit condenser control in two circuits with up to 6 steps on air water cooled units with and without reversal on the water refrigerant circuit defrost management by time and or by temperature or pressure fan speed control complete alarm management time band management Advanced functions e sliding defrost functions to prevent high condensing pressure temperature low evaporator pressure temperature antifreeze control management of tandem trio and semi hermetic compressors pump down part winding start Driver functions e Electronic expansion valve management Devices controlled e Compressor condenser fans evaporator fan air source units reversing valve water pumps for the evaporator and or condenser water source units outlet fan air air antifreeze heater support heaters alarm signal device Programming CAREL offers the possibility to
53. Access nt Dig address RW S1 probe limits inimum end scale of pressure probe S1 9 9 to 99 9 barg 1 0 manufacturer ANA 80 RW pressure limits in value 1 probe limits laximum end scale of pressure probe S1 0 0 to 99 9 barg 9 3 manufacturer ANA 81 RW pressure limits ax value Alarms delay Low SuperHeat alarm delay 0 to 3600 S 20 manufacturer 83 RW Low SuperHeat Alarms delay High SuperHeat alarm delay 0 to 500 min 20 manufacturer 84 RW High SuperHeat Alarms delay LOP alarm delay 0 to 3600 S 20 manufacturer 85 RW LOP Alarms delay OP alarm delay 0 to 3600 S 0 manufacturer 86 RW OP Alarms delay Probe alarm signal delay 0 to 999 S 0 manufacturer 87 RW Delay probe error CH Circuit EEV Ratio Percentage of EEV opening from autosetup 96 manufacturer Auto CH Circuit EEV Ratio Settable percentage of EEV opening in chiller mode 0 to 100 96 manufacturer CH Proportional gain Proportional gain from autosetup manufacturer Auto CH Proportional gain Settable proportional gain in chiller mode 0 to 99 9 manufacturer CH Integral time ntegral time from autosetup in chiller mode s manufacturer Auto CH Integral time Settable integral time in chiller mode 0 to 999 S manufacturer CH SuperHeat set C1 SuperHeat set point from autosetup C manufacturer Auto CH SuperHeat set C1 Settable SuperHeat set point in chiller mode circuit 1 2 0 to 50 0 C manufacturer CH Low SuperHeat C1 Low SuperHeat from autosetup C manufacturer Auto CH Low SuperHeat C1 Settable low SuperH
54. Auto Hi TCond protection Settable high condensing temperature alarm 0 0 to 99 9 e manufacturer Hi TCond int time Condensing temperature integral time from autosetup S manufacturer Auto Hi TCond int time Settable condensing temperature integral time 0 0 to 25 5 S manufacturer anual mng driver 1 Driver 1 management mode automatic or manual AUTO manufacturer DIG 160 RW EEV Mode MAN lanual mng driver 1 Settable steps required with manual management on driver 1 0 to 8100 manufacturer Requested steps anual mng driver 1 Current position read for valve 1 manufacturer T 97 R EEV Position anual mng driver 2 Driver 2 management mode automatic or manual AUTO manufacturer DIG 161 RW EEV Mode MAN anual mng driver 2 Settable steps required with manual management on driver 2 0 to 8100 manufacturer Requested steps anual mng driver 2 Current position read for valve 2 manufacturer T 98 R EEV Position anual mng driver 3 Driver 3 management mode automatic or manual AUTO manufacturer DIG 162 RW EEV Mode MAN anual mng driver 3 Settable steps required with manual management on driver 3 0 to 8100 manufacturer Requested steps anual mng driver 3 Current position read for valve 3 manufacturer T 99 R EEV Position anual mng driver 4 Driver 4 management mode automatic or manual AUTO manufacturer DIG 163 RW EEV Mode MAN anual mng driver 4 Settable steps required with manual management on driver 4 0 to 8100 manufacturer Requested steps anual mng driver 4 Curr
55. End minutes for low noise operation 0 to 59 min 0 user End hour Low noise Low noise set point in cooling 0 0 to 99 9 C bar 0 0 user Setpoint Summer Low noise Low noise set point in heating 0 0 to 99 9 C bar 0 0 user Setpoint Winter Actual setpoint Active set point C direc ANA 57 R Compens B7 Current outside temperature compensation value B7 C direc ANA 58 R Ext set B8 Current set point from analogue input B8 C ANA 59 R Summer setpoint Cooling set point 99 9 to 99 9 C 12 0 direc ANA 1 RW Winter setpoint Heating set point 99 9 to 99 9 C 45 0 direc ANA 2 RW B8 external setpoint inimum set point value from probe B8 cooling 99 9 to 99 9 C 7 0 direc Summer min B8 external setpoint laximum set point value from probe B8 cooling 99 9 to 99 9 C 17 0 direc Summer max B8 external setpoint inimum set point value from probe B8 heating 99 9 to 99 9 e 40 0 direc Winter min B8 external setpoint laximum set point value from probe B8 heating 99 9 to 99 9 C 50 0 Winter max Temperature Temperature control band 0 to 99 9 C 3 0 user ANA 4 RW regulation band Summer temperature inimum limit for setting the set point in cooling 99 9 to 99 9 C 122 user ANA 7 RW setpoint limits Low Summer temperature laximum limit for setting the set point in cooling 99 9 to 99 9 SC 48 9 user ANA 8 RW setpoint limits High Winter temperature inimum limit for setting the set point in heating 99 9 to 99 9 C 10 0 user ANA 9 RW setpo
56. IC EQUIPMENT WEEE In reference to European Union directive 2002 96 EC issued on 27 January 2003 and the related national legislation please note that 1 WEEE cannot be disposed of as municipal waste and such waste must be collected and disposed of separately 2 The public or private waste collection systems defined by local legislation must be used In addition the equipment can be returned to the distributor at the end of its working life when buying new equipment 3 The equipment may contain hazardous substances the improper use or incorrect disposal of such may have negative effects on human health and on the environment 4 The symbol crossed out wheeled bin shown on the product or on the packaging and on the instruction sheet indicates that the equipment has been introduced onto the market after 13 August 2005 and that it must be disposed of separately 5 Inthe event of illegal disposal of electrical and electronic waste the penalties are specified by local waste disposal legislation CONTENTS TS A cx Eee Ace Paice oes nine Pah a INTRODUCTION 8 7 1 1 General description saepe 7 1 2 User Interface retten it P itn e me idit iie me Re 7 1 3 Programming procedure ED E 8 PGDO TERMINAL sie cz EE M 8 2 1 Passwords and levels of access reete e m Ru rer eli saloni dii 8 2 2 Type f connetto Sranang E 8 APPLICATIONS A aaa 9 3 1 AIR AIR units si
57. LOAD Reciprocating comp Type of semi hermetic compressors controlled WITH PUMP DOWN ONLY manufacturer WITH PARTWINDING aximum time Maximum pumpdown duration 1 to 999 S 60 manufacturer INT 2 RW PW time Part winding time 1 to 999 ms 1 manufacturer INT 3 RW Pump down config Sled eid umpdowi mado PRESS SWITCH PRESS user End from PUNR PRESSURE PROBE SWITCH End set End pumpdown pressure from low pressure transducer 99 9 to 99 9 bar 0 0 user ANA 3 RW Unload enabled Enable compressor capacity control N Y manufacturer Type Configure compressor capacity control relay operating logic Nr C manufacturer Unload time Compressor capacity control deactivation delay 1 to 999 S 5 manufacturer 4 RW oe D inimum compressor on time 0 to 9999 S 60 manufacturer 5 RW SAU uL inimum compressor off time 0 to 9999 S 360 manufacturer 6 RW Tire between si inimum time between starts of different compressors 0 to 9999 S 10 manufacturer 7 RW comp starts Jime between sang inimum time between starts of the same compressor 0 to 9999 S 450 manufacturer 8 RW comp starts in time between pump fan and Delay between start of pump main fan and compressors 0 to 999 S 5 manufacturer 107 compressors starting Delay OFF main Delay for stopping the pump main fan 0 to 999 S 5 manufacturer 108 pump fan Hour meter i o Cond pump Condenser pump operating hours x 1000 0 to 999 h 62 R Hour meter R Cond pump Condenser pump operating hours 0 to 999 h 63 R Hour meter ain pump Ev
58. Sonda uscita evaporatore Outlet evaporator probe B6 B7 Sonda condensatore 1 Sonda uscita evaporatore 1 Sonda condensatore 2 Condenser1 probe Outlet evaporator probe1 B8 Condenser 2 probe 83 Co Sonda uscita evaporatore 2 84 Outlet evaporator probe 2 Condensatore 1 perator p Condensatore 2 Condenser 1 Resistenza antigelo 1 Condenser 2 Evaporatore Antifreeze heater 1 Evaporatore 2 Evaporator 1 Resistenza antigelo 2 Evaporator 2 Antifreeze heater 2 Compressore 1 _Circ 1 Compressore 1 _Cire2 Compressor 1 Compressor 1 Sonda ingresso evaporatore Inlet evaporator probe B5 Alta pressionet Bassa pres 1 B1 Bassa pres 2 Alta pressione 2 High pressure1 Low pressure 1 aonda cons Low pressure 2 High pressure 2 Termico comp 1 P d b Pompa dell acqua Termico comp 2 Comp 1 overload WW Water pump Comp 2 overload O Pompa dell acqua Valvola inversione 1 e 2 Compressore 2 Water pump Reversing valve 1 and 2 Compressore 2 Compressor 2 Compressor 2 Circ 1 Esterno External Interno estate Internal cooling Circ 2 Fig 3 a v 3 030220431 rel 1 1 10 10 06 18 CS 3 21 WATER WATER heat pumps with reversal on the water circuit two circuits 1 evaporator H02 1 and H21 4 Esterno External Interno estate Internal cooling Valvolainversione 1 e 2 Reversing valve 1 and 2 B Sonda cond Flussostato Flow switch Uscita evaporatore 1 Output evaporator 1 B6 Sonda condensatore 2 Cond
59. Start defrost threshold 99 9 to 99 9 C bar 2 0 user d2 End defrost threshold 99 9 to 99 9 C bar 12 0 user d3 Enable sliding defrost function EY user d4 inim set point to start defrost accessible with sliding defrost function 0 0 to 99 9 C bar 0 5 user d5 Outside temperature threshold to start sliding defrost action 99 9 to 99 9 C 0 0 user d6 Outside temperature threshold for maximum sliding defrost action 99 9 to 99 9 C 0 0 user F parameters fans Fl Start hour for low noise operation 0 to 23 h 0 user F Start minutes for low noise operation 0 to 59 min 0 user F3 End hour for low noise operation 0 to 23 h 0 user F4 End minutes for low noise operation 0 to 59 min 0 user F5 Low noise set point in cooling 0 0 to 99 9 C bar 0 0 user F6 Low noise set point in heating 0 0 to 99 9 C bar 0 0 user H parameters unit configuration H1 Enable unit ON OFF from digital input N Y N user H2 Enable cooling heating selection from digital input N Y N user H3 Enable unit ON OFF from supervisor N Y N user H4 Enable cooling heating selection from supervisor N Y N user H5 Select type of serial protocol for supervisory network CAREL CAREL user MODBUS LONWORKS Rs232 MODEM ANALOGUE GSM MODEM H6 Serial port communication speed for supervisory network 1200 RS485 RS422 19200 ONLY RS485 user 2400 RS485 RS422 4800 RS485 RS422 9600 RS485 RS422 19200 ONLY RS485 H7 Serial identification number for supervisory network 0 to 200 1 user P parameter
60. TS D1 Serious alarm D2 Evaporator flow switch D3 Remote ON OFF D4 Main pump thermal overload D5 Low pressure switch circuit 1 D6 High pressure switch circuit 1 D7 Compressor 1 thermal overload circuit 1 D8 Compressor 2 thermal overload circuit 1 D9 Condenser pump thermal overload D10 Low pressure switch circuit 2 D11 High pressure switch circuit 2 D12 Compressor 1 thermal overload circuit 2 D13 Compressor 2 thermal overload circuit 2 D14 Condenser flow switch D15 D16 Compressor 3 thermal overload circuit 1 D17 Compressor 3 thermal overload circuit 2 D18 Evaporator pump 2 thermal overload ANALOGUE INPUTS B1 Condensing temperature circuit 1 Evaporation pressure circuit 1 B2 Condensing temperature circuit 2 Evaporation pressure circuit 2 B3 Condensing pressure circuit 1 B4 Condensing pressure circuit 2 B5 Evaporator water inlet temperature B6 Water outlet temperature B7 Outside temperature B8 Remote set point B9 Evaporator 1 water outlet temperature B10 Evaporator 2 water outlet temperature DIGITAL OUTPUTS 01 Compressor 1 circuit 1 Winding A compressor 1 circuit 1 02 Compressor 2 circuit 1 Winding B compressor 1 circuit 1 Part load compressor 1 circuit 1 03 Liquid solenoid circuit 1 Compressor 3 circuit 1 Part load compressor 1 circuit 1 04 05 Pump 06 Compressor 1 circuit 1 Winding A compressor 1 circuit 1 07 Compressor 2 circuit 2 Winding B compressor 1 circuit 2 Compressor 1 capacity control circuit 2 08 Liquid solenoid
61. a SuperHeat measured by driver 3 999 9 to 999 9 C ANA 62 R Satured Temp Saturation temperature measured by driver 3 999 9 to 999 9 C ANA 66 R Suction Temp Suction temperature measured by driver 3 999 9 to 999 9 C ANA 70 R Driver 4 Display type of gas used in the refrigerant circui See Driver 8 RW SuperHea SuperHeat measured by driver 4 999 9 to 999 9 C ANA 63 R Satured Temp Saturation temperature measured by driver 4 999 9 to 999 9 C ANA 67 R Suction Temp Suction temperature measured by driver 4 999 9 to 999 9 C ANA 7 R Driver 1 Display type of gas used in the refrigerant circui one INT 8 RW R22 R134a R404a R407c R410a R507c R290 R600 R600a R717 R744 Evap press Evaporation pressure measured by driver 1 99 9 to 99 9 barg ANA 64 R Evap temp Evaporation temperature measured by driver 1 99 9 to 99 9 C ANA 72 R Cond temp Condensing temperature measured by driver 1 99 9 to 99 9 C ANA 76 R Driver 2 Display type of gas used in the refrigerant circui See Driver 8 RW Evap press Evaporation pressure measured by driver 2 99 9 to 99 9 barg ANA 65 R Evap temp Evaporation temperature measured by driver 2 99 9 to 99 9 C ANA 73 R Cond temp Condensing temperature measured by driver 2 99 9 to 99 9 C ANA 77 R Driver 3 Display type of gas used in the refrigerant circui See Driver 8 RW Evap press Evaporation pressure measured by driver 3 99 9 to 99 9 barg ANA 66 R Evap temp Evaporation tempe
62. al Analogue input 4mA 096 request no compressor on Analogue input 20mA 10096 request all the compressors on EXAMPLE OF CONTROL ON A UNIT WITH 6 HERMETIC COMPRESSORS Condensing units with proportional control FSC THRS5 THRS4 THRS3 essa RC V mA i Q o Fig 7 d FSC Analogue input end scale THR S1 5 Activation threshold for step 1 to 5 RC Remote control signal C1 6 Compressor steps Total number of compressors 6 Number of load steps per compressor 0 Total number of steps Total number of compressors Total number of compressors Number of load steps per compressor 6 6 0 6 Amplitude of each step Operating current range Total number of steps 20 4 6 2 666 mA If the analogue input B8 measures 9 35 mA two steps will be requested therefore two compressors will be activated Two safety thresholds are calculated for the total activation or deactivation of the compressors if exceeded These thresholds are calculated according to the following relationships Forced shutdown threshold Amplitude of each step 2 Analogue input lower end scale 2 666 2 4 1 333 mA gt 5 3 mA Forced start threshold Analogue input upper end scale Forced shutdown threshold 20 1 333 18 667 mA gt 18 6 mA If the reading of the analogue input B8 is less than the value of the forced shutdown threshold calculated the devices will be stopped unconditionally If the reading of th
63. ant circuit in circuit 1 B41 e 4 way valve for reversing the refrigerant circuit in circuit 2 B42 In general if the unit configured features operation in both chiller mode cooling and heat pump mode heating the operating mode can be changed with the unit on or off depending on the type of selection There are three different ways to change the operating mode Keypad a parameter is set on the menu The operating mode can only be changed if the unit is off and the circulating pump has stopped Supervisor this can be enabled circulating pump has stopped with a switching signal received from the supervisor serial network The operating mode can only be changed if the unit is off and the Digital input this can be enabled with the switching of the enabled digital input by an external controller A delay must be set for switching the reversing valves in the refrigerant circuit if equal to zero the mode is switched immediately otherwise the unit is switched off according to the procedure shown in the figure Switching Cooling heating from digital input SWDIN SWDIN Status of the digital input for Cooling heating selection USTAT USTAT Unit operating status 4WAY Operating status of 4 way reversing valves possibly depending on the operating logic AWAY SWD Cooling heating switching delay t s Time gt h i s Fig 7 m SWD SWD SWD SWD The keypad and supervisor have equal priority in setting the operating mode the m
64. anufacturer DIG 3 RW Condenser number 2 Condensation Type of condensing devices controlled INVERTER INVERTER manufacturer DIG 21 RW Devices type FANS Condensation Total number of fans installed 1to4 manufacturer Fans number Fans type Frequency of power supply for fan control by inverter 50 Hz 50 manufacturer Frequency 60 Cond fan forcing Forcing time when starting the condenser temperature control 0 to 999 S 0 manufacturer INT 38 RW ime on start PWM Phase cut Maximum voltage threshold for Triac 0 to 100 75 manufacturer Triac_max PWM Phase cut Minimum voltage threshold for Triac 0 to 100 96 25 manufacturer Triac_min PWM Phase cut Amplitude impulse for phase control 0 0 to 10 0 ms 2 5 manufacturer Range wave Fan parameters Condensing set point cooling 0 0 to 99 9 C bar 14 0 user ANA 11 RW summer Setpoin Fan parameters Condenser differential cooling 99 9 to 99 9 C bar 2 0 user ANA 12 RW summer Diff Fan parameters Evaporation set point heating 0 0 to 99 9 C bar 14 0 user winter Setpoint Fan parameters Evaporation differential heating 99 9 to 99 9 C bar 2 0 user winter Diff Fan Differential for fan operation at minimum speed 99 9 to 99 9 C bar 5 0 user minimum speed diff nverter Maximum fan speed with inverter 0 0 to 10 0 V 10 0 manufacturer ax speed nverter Minimum fan speed with inverter 0 0 to 10 0 V 0 0 manufacturer in speed nverter Speed up time with inverter 0 to 999 S 30 manufacturer INT 39 RW
65. aporator pump main fan operating hours x 1000 0 to 999 h 58 ain fan Hour meter ain pump Evaporator pump main fan operating hours 0 to 999 h 59 ain fan Hour meter ain pump 2 Evaporator pump 2 operating hours x 1000 0 to 999 h 60 Hour meter ain pump 2 Evaporator pump 2 operating hours 0 to 999 h 61 nour meter Compressor 1 operating hours circuit 1 x 1000 0 to 999 h 64 Comp 1 circ nour meter Compressor 1 operating hours circui 0 to 999 h 65 Comp 1 circ oe ete Compressor 2 operating hours circuit 1 x 1000 0 to 999 h 66 omp 2 circ OUT mete Compressor 2 operating hours circui 0 to 999 h 67 Comp 2 circ mear meter Compressor 3 operating hours circuit 1 x 1000 0 to 999 h 68 Comp 3 circ our mete Compressor 3 operating hours circui 0 to 999 h 69 Comp 3 circ 030220431 rel 1 1 10 10 06 28 UCI Menu description Extended description Min max limits pa paru Access Bia si wi ea Compressor 1 operating hours circuit 2 x 1000 0 to 999 h 70 Comp 1 circ 2 OLE ese Compressor 1 operating hours circuit 2 0 to 999 h 71 Comp 1 circ 2 pcia Compressor 2 operating hours circuit 2 x 1000 0 to 999 h 72 Comp 2 circ 2 Mer Ma Compressor 2 operating hours circuit 2 0 to 999 h 73 Adds Compr
66. circuit 2 Compressor 3 circuit 2 Compressor 1 capacity control circuit 2 Pump 2 09 010 General alarm 011 Antifreeze heater circuit 1 012 Antifreeze heater circuit 2 013 014 Condenser pump ANALOGUE OUTPUTS y1 Y2 Y3 Y4 Y5 Pump 2 Y6 030220431 rel 1 1 10 10 06 66 uC3 8 3 2 Cooling Heat pump with reversal on the water circuit DIGITAL INPUTS D1 Serious alarm D2 Evaporator flow switch D3 Remote ON OFF D4 Main pump thermal overload D5 Low pressure switch circuit 1 D6 High pressure switch circuit 1 D7 Compressor 1 thermal overload circuit 1 D8 Compressor 2 thermal overload circuit 1 D9 Condenser pump thermal overload D10 Low pressure switch circuit 2 D11 High pressure switch circuit 2 D12 Compressor 1 thermal overload circuit 2 D13 Compressor 2 thermal overload circuit 2 D14 Condenser flow switch D15 Cooling heating selection D16 Compressor 3 thermal overload circuit 1 D17 Compressor 3 thermal overload circuit 2 D18 Evaporator pump 2 thermal overload ANALOGUE INPUTS B1 Condenser inlet temperature B2 Condenser outlet temperature B3 Condensing pressure circuit 1 B4 Condensing pressure circuit 2 B5 Evaporator water inlet temperature B6 Water outlet temperature B7 Outside temperature B8 Remote set point B9 Evaporator 1 water outlet temperature B10 Evaporator 2
67. dification Parametri Fn Parameters Fn EVD Electronic valve driver The various functions of the units are described below with specific references to the parameters in the table according to the program menu codes 030220431 rel 1 1 10 10 06 Fig 4 a 24 4 2 List of parameters with the pLD user interface pLD Extended description Min max limits Unit of measure Default Access parameters probe settings 1 Calibration offset for analogue input B1 9 9 to 9 9 C bar 0 user 2 Calibration offset for analogue input B2 9 9 to 9 9 C bar 0 user 3 Calibration offset for analogue input B3 9 9 to 9 9 bar 0 user 4 Calibration offset for analogue input B4 9 9 to 9 9 bar 0 user 5 Calibration offset for analogue input B5 9 9 to 9 9 C 0 user 6 Calibration offset for analogue input B6 9 9 to 9 9 C 0 user n Calibration offset for analogue input B7 9 9 to 9 9 C 0 user 8 Calibration offset for analogue input B8 9 9 to 9 9 C 0 user 9 Calibration offset for analogue input B9 9 9 to 9 9 C 0 user
68. e 2 Diff Aux heater HP mode Boiler temperature set point to enable support heater 3 0 to 50 0 C 10 0 user enable by tank Setpoint Aux heater HP mode Boiler temperature differential to enable support heater 0 0 to 10 0 C 2 0 user enable by tank Diff Aux heater HP mode Outside air set point to enable support heater 30 0 to 30 0 C 7 0 user enable by ext temp Setpoint Aux heater HP mode Outside air differential to enable support heater 0 0 to 10 0 e 2 0 user enable by ext temp Diff Auxiliary Support heater 2 differential in heating mode Dto 60 min 15 user INT 10 RW heater activation delay on heating mode Antifreeze Select probe for cooling support control in air air units OUTLET TEMP OUTLET user Probe ROOM TEMP TEMP Automatic Device start up mode in antifreeze with unit off DISABLED DISABLED user INT 11 RW urn ON ON RES amp PUMP in antifreeze ON RES amp UNIT ONLY RESISTANCE ON Defrost config Select values for the start and end defrost control TEMPERATURE TEMPERAT user INT 12 RW Start End PRESSURE URE EXTERNAL CONTACT PRESSURE TEMP Defrost config Type of defrost between circuits SIMULTANEOUS SIMULTAN user Type SEPARATE EOUS Defrost end Select end defrost mode TIME TIME user by threshold TEMP PRESSURE Defrost Delay Defrost activation delay 1 to 32000 S 1800 User 13 RW Defrost Start Start defrost threshold 99 0 to 99 9 C bar 2 0 user 5 RW Defrost End End defrost threshold 99 0 to 99 9 C bar 12 0 user A 6 RW De
69. e analogue input B8 is greater than the value of the forced start threshold calculated the devices will be started unconditionally Stepped control Below is a description of the operation of stepped control steps when a 4 to 20 mA analogue input is used The compressor requests depend on the analogue input B8 using a current divider or equivalent circuit to supply precise signals that correspond to the activation or deactivation of the compressors and the relative load steps Analogue input 4 mA 10096 request all compressors on Analogue input 20mA 096 request no compressor on 3 030220431 rel 1 1 10 10 06 50 CS EXAMPLE OF CONTROL ON A UNIT WITH 6 HERMETIC COMPRESSORS Condensing units with stepped control C6 C5 C4 C3 C2 C1 0 THRS5 THRS4 THRS3 THRS2 THRS1 FSC RC V mA Fig 7 e FSC Analogue input end scale THR S1 5 A Activation threshold for step 1 to 5 RC Remote control signal C 1 6 Compressor steps Total number of compressors 6 Number of load steps per compressor 0 Total number of steps Total number of compressors Total number of compressors Number of load steps per compressor 6 6 0 6 Amplitude of each step Operating current range Total number of steps 20 4 6 2 666 mA If analogue input B8 measures 14 65 mA two steps will be required and consequently two compressors will be started Control with digital inputs A number of digital inputs equal to the number of compressors installed on th
70. e unit are provided to start the devices There is no direct correspondence between the digital input and the compressor on however the number of inputs closed at the same time will determine the number of compressors that are on The compressor activation sequence is in any case defined according to rotation as enabled by the corresponding parameter Only in the case of units with six compressors in two refrigerant circuits in trio configuration is there an exception to the compressor control mode digital inputs 4 and 18 activate two load steps in response to just one input signal Considering this characteristic the cooling capacity of the unit can still be modulated by uniformly increasing the capacity one step at a time the digital inputs must be switched in such a way as to ensure that the difference in the number of requests between two consecutive input control sequences is equal to one step 7 4 Compressor rotation Inputs used e Compressor 1 thermal overload circuit 1 B17 e Compressor 2 thermal overload circuit 1 B18 e Compressor 3 thermal overload circuit 1 units with trio compressors B26 e Compressor 1 thermal overload circuit 2 B22 e Compressor 2 thermal overload circuit 2 B23 e Compressor 3 thermal overload circuit 2 units with trio compressors B27 Parameters used e Configure type of unit H e Type of semi hermetic compressors controlled C e Total number of compressors number of refrigerant circuits on unit H
71. eat in chiller mode circuit 1 4 0 to 21 0 C manufacturer CH SuperHeat set C2 SuperHeat set point from autosetup C manufacturer Auto CH SuperHeat set C2 Settable SuperHeat set point in chiller mode circuit 2 2 0 to 50 0 C manufacturer CH Low SuperHeat C2 Low SuperHeat from autosetup C manufacturer Auto CH Low SuperHeat C2 Settable low SuperHeat in chiller mode circuit 2 4 0 to 21 0 C manufacturer HP Circuit EEV Ratio Percentage of EEV opening from autosetup manufacturer Auto HP Circuit EEV Ratio Settable percentage of EEV opening in heat pump mode 0 to 100 manufacturer HP Proportional gain Proportional gain from autosetup manufacturer Auto HP Proportional gain Settable proportional gain in heat pump mode 0 to 99 9 manufacturer HP Integral time ntegral time from autosetup in heat pump mode s manufacturer Auto HP Integral time Settable integral time in heat pump mode 0 to 999 S manufacturer HP SuperHeat set C1 SuperHeat set point from autosetup SC manufacturer Auto HP SuperHeat set C1 Settable SuperHeat set point in heat pump mode circuit 1 2 0 to 50 0 C manufacturer HP Low SuperHeat C1 Low SuperHeat from autosetup C manufacturer Auto HP Low SuperHeat C1 Settable low SuperHeat in heat pump mode circuit 1 4 0 to 21 0 C manufacturer HP SuperHeat set C2 SuperHeat set point from autosetup e manufacturer Auto HP SuperHeat set C2 Settable SuperHeat set point in heat pump mode circuit 2 2 0 to 50 0 oC manufacturer HP Low SuperHeat C2 Low S
72. ensatore 2 Condenser 2 Evaporatore Evaporator l Resistenza antigelo 2 Antifreeze heater 2 Valvola inversione 2 Reversing valve 2 Sonda ingresso evaporatore Inlet evaporator probe Compressore 1 Compressor 170 Bassa pressione 2 Alta pressione 2 Low pressure 2 High pressure 2 Termico comp 2 Comp 2 overload Ls Compressore 2 cic Compressor 27 Pompa dell acqua Water pump Fig 3 a t 17 c3 3 19 WATER WATER heat pumps with reversal on the water circuit single circuit Esterno External Interno estate Internal cooling Valvola inversione Reversing valve Flussostato Flow switch Sonda uscita evaporatore Outlet evaporator probe B2 Evaporatore Evaporator Condensatore Condenser Resistenza antigelo Antifreeze heater o e 9 38 52 Compressore1 ci 2 5 B Compressor 1 Sonda ingresso evaporatore 8 E Inlet evaporator probe 8 3 o9 Alta pressione Bassa pres A High pressure Low pressure Termico comp Comp overload Pompa dell acqua Water pump Compressore2 ci Compressor 2 Valvola inversione Reversing valve Esterno External Interno Internal Fig 3 a u 3 20 WATER WATER heat pumps with reversal on the water circuit two circuits HO2 1 and H21 4 Esterno External Interno estate Internal cooling Valvola inversione 1 e 2 Reversing valve 1 and 2 B2 UL Flussostato Sonda cond Flow switch
73. enser 2 probe Sonda condensatore 1 Condenser 1 probe Condensatore 1 Condenser 1 Condensatore 2 Condenser 2 Resistenza antigelo 1 Antifreeze heater 1 Compressore 1 Compressor 1 Compressore 1 Compressor 1 l Sonda ingresso evaporatore Alta pressione 1 Bassa pres 1 Inlet evaporator probe Alta pressione 2 High pressure 1 Low pressure1 pen pres 2 ap ow pressure 2 High pressure 2 Termico comp 1 B1 Sonda cond Termico comp 2 Comp 1 overload Condenser probe Comp 2 overload dh Pompa dell acqua Le Jj e Water pump Compressore 2 S Valvola invers 1e 2 Compressore 2 Compressor 2 Revers vale 1and2 Compressor 2 Esterno External Interno estate Internal cooling Fig 3 a z 3 22 Air cooled condensing unit without reverse cycle single circuit Termico ventilatore condensatore Condenser fan overload Ventilatore Fan Sonda condensatore Condenser probe Compressore 1 ci 4 Compressor Alta pressione Bassa pressione High pressure Low pressure Termico compressore Compressor overload Compressore 2 Compressor2 7 Fig 3 b a Circ 1 3 030220431 rel 1 1 10 10 06 19 uc3 3 23 Air cooled condensing unit without reverse cycle two circuits Termico ventilatore condensatore Condenser fan overload Ventilatore Fan Sonda condensatore Condenser probe B3 4 T Compressore 1 Circ 1 Compressor 1 Termico ventilatore condensato
74. ent position read for valve 4 manufacturer T 100 R EEV Position Driver 1 status Go ahead active driver 1 status NO FAULT manufacturer T 93 RW System waiting for VALVE NOT CLOSED BATT CHARGING EEPROM ERROR Go ahead Ignore driver 1 status 0to1 manufacturer DIG 169 RW Driver 2 status Go ahead active driver 2 status NO FAULT manufacturer INT 94 RW System waiting for VALVE NOT CLOSED BATT CHARGING EEPROM ERROR Go ahead Ignore driver 2 status 0to1 manufacturer DIG 170 RW Driver 3 status Go ahead active driver 3 status NO FAULT manufacturer INT 95 RW System waiting for VALVE NOT CLOSED BATT CHARGING EEPROM ERROR Go ahead Ignore driver 3 status 0to1 manufacturer DIG 171 RW 3 030220431 rel 1 1 10 10 06 41 UCI Gur m e Unit of Default Ana l Supervisor R Menu description Extended description Min max limits sure Access nt Dig address RW Driver 4 status Go ahead active driver 4 status NO FAULT manufacturer INT 96 RW System waiting for VALVE NOT CLOSED BATT CHARGING EEPROM ERROR Go ahead gnore driver 4 status 0 to manufacturer DIG 172 RW Drv 1 probes offse Probe S1 offset driver 1 9 9 to 9 9 C barg manufacturer S1 Drv 1 probes offse Probe S2 offset driver 1 9 9 to 9
75. ermal overload B28 Parameters used e Number of evaporator pumps H e Evaporator pump main fan operating mode H e Delay between start of pump main fan and compressors c e Delay for stopping the pump main fan c e ON time in burst operation H e OFF time in burst operation H Outputs used e Evaporator pump 1 B33 e Evaporator pump 2 B36 The main circulating pump can be managed in four different operating modes e Always on the pump is activated when the unit is started and remains active while the unit is operating if there are two pumps the devices will be rotated according to the specific settings e Onaccording to the status of the compressor the pump is on according to the compressor call status consequently when the set point has been reached the circulating pump and compressors excepting in the case of safety times are off e Burst operation normally the circulating pump is off and is activated periodically for a set time the unit temperature conditions are constantly monitored and the compressors are started if necessary when the control set point is reached the pump is switched off e Always off the main circulating pump is not managed whatever the operating conditions of the unit Two safety times are observed respectively a compressor activation delay after the circulating pump starts and pump shutdown delay after the compressors stop when having reached the control set point or the unit is
76. essor 3 operating hours circuit 2 x 1000 0 to 999 h 74 Comp 3 circ 2 eb Du Compressor 3 operating hours circuit 2 0 to 999 h 75 Pump Fan hour meter Pump main fan operating hour threshold alarm x 1000 0 to 999 h 10 user Threshold Reset Reset pump main fan operating hours Oto1 user Evaporator pump main fan operating hours x 1000 0 to 999 h user INT 58 R Evaporator main pump fan operating hours 0 to 999 h user INT 59 R ci meter Pump 2 operating hour threshold alarm x 1000 0 to 999 h 10 user Reset Reset pump 2 operating hours 0to1 user Evaporator pump 2 operating hours x 1000 0 to 999 h user INT 60 R Evaporator pump 2 operating hours 0 to 999 h user INT 61 R Condenser pump hour meter Condenser pump operating hour threshold alarm x 1000 0 to 999 h 10 user Threshold Reset Reset condenser pump operating hours 0to1 user Condenser pump operating hours x 1000 0 to 999 h user INT 62 R Condenser pump operating hours 0 to 999 h user INT 63 R Comp 1 circ 1 hour meter Operating hour threshold alarm compressor 1 circuit 1 x 1000 0 to 999 h 10 user Threshold Reset Reset compressor 1 operating hours circuit 1 Oto1 user Compressor 1 operating hours circuit 1 x 1000 0 to 999 h user INT 64 R Compressor 1 operating hours circuit 1 0 to 999 h user INT 65 R Comp 2 circ 1 hour meter Operating hour threshold alarm compressor 2 circuit 1 x 1000 0 to 999 h 10 user Threshold Reset Reset compressor 2 operating hours circuit 1 Oto 1 user Compressor 2 operating hours circuit
77. et temp probe Sonda uscita evaporatore 1 B6 Outlet evaporator probe 1 B2 Sonda uscita evaporatore 2 Evaporatore 1 Outlet evaporator probe 2 Evaporatore 2 Evaporator 1 Resistenza antigelo 1 Evaporator 2 Valvola inversione 1 Antifreeze heater 1 Valvola inversione 2 Reversing valve 1 Resistenza antigelo 2 Reversing valve 2 Antifreeze heater 2 Sonda ingresso evaporatore A Compressore 1 Cire 1 Inlet evaporator probe Compressore 1 jo 2 Compressor 1 Compressor 1 Pompa dell acqua Water pump Alta pressione 1 Bassa pressione 1 Bassa pressione 2 Alta pressione 2 High pressure 1 Low pressure 1 Low pressure 2 High pressure 2 Termico comp 1 Termico comp 2 Comp 1 overload Comp 2 overload Compressore2 Cjc2 Compressore2 Circ 1 Compressor 27 Compressor 27 Fig 3 a n 030220431 rel 1 1 10 10 06 14 uC3 3 13 WATER WATER chillers single circuit Flussostato Flow switch B3 Sonda temp acqua cond Water cond temp probe B2 Condensatore Condenser Evaporatore Evaporator Compressore1 Cire 7 Compressor 1 BI Alta pressione Bassa pressione High pressure Low pressure Termico comp Comp overload Compressore2 Giro 1 Compressor2 Fig 3 a o 3 144 WATER WATER chillers two circuits Flussostato Flow switch Sonda uscita evaporatore 1 Sonda temp B3 Outlet evaporator probe 1 acqua cond 1 B2 Water cond 1 TNT x XK temp probe onden
78. f Evaporator Evaporator flow switch alarm delay at start up 0 to 999 S 15 user 24 RW ow alarm Start delay Evaporator Evaporator flow switch alarm delay in steady operation 0 to 999 S 3 user 25 RW ow alarm Regime delay Condenser Condenser flow switch alarm delay at start up 0 to 999 S 15 user 26 RW ow alarm Start delay Condenser Condenser flow switch alarm delay in steady operation 0 to 999 S 3 user 27 RW ow alarm Regime delay Automatic Number of alarm events to switch from automatic to manual reset Oto 4 1 user 28 RW alarms reset Events n Automatic Period of repeated alarm events to switch from automatic to manual 1 to 99 min 60 user T 29 RW alarms reset reset Time Alarms Select type of compressor thermal overload alarm reset Oto 0 user reset selection Comp overload Alarms Select type of fan thermal overload alarm reset Oto 0 user reset selection Fans overload Alarms Select type of low pressure alarm reset Oto 0 user reset selection Low pressure Alarms Select type of high pressure alarm reset Oto 0 user reset selection High pressure Configuration Configure type of unit AIR AIR CHILLER AIR AIR manufacturer AIR AIR CHILLER HEAT P CHILLER WATER AIR CHILLER WATER AIR CHILLER 4 HEAT P WATER WATER CHILLER WATER WATER CHILLER 4 HEAT P WATER AIR CONDENSING WATER AIR CONDENSING HEAT P Type of condensing unit control ANALOGUE CONTROL ANALOGUE manufacturer DIGITAL CONTROL CONTROL 3 030220431 rel 1 1 10 10 06 34 UCI
79. for Saturday F1 F2 F3 F4 0 user Sat On off uni Select band F1 F2 F3 or F4 for Sunday F1 F2 F3 F4 0 user Sun Setpoint temp Start hour for set point band 1 0 to 23 h 0 user Start Time Z 1 Setpoint temp Start minutes for set point band 1 0 to 59 min 0 user Start Time Z 1 Setpoint temp Cooling set point in band 99 9 to 99 9 C 0 user ANA 35 RW Summer Setpoint temp Heating set point in band 99 9 to 99 9 C 0 user ANA 36 RW Winter Setpoint temp Start hour for set point band 2 0 to 23 h 0 user Start Time Z 2 Setpoint temp Start minutes for set point band 2 0 to 59 min 0 user Start Time Z 2 030220431 rel 1 1 10 10 06 38 UCI zur m Ww Unit of Default Ana l Supervisor R Menu description Extended description Min max limits messie Access nt Dig address RW Setpoint temp Cooling set point in band 2 99 9 to 99 9 C 0 user ANA 37 RW Summer Setpoint temp Heating set point in band 2 99 9 to 99 9 C 0 user ANA 38 RW Winter Setpoint temp Start hour for set point band 3 0 to 23 h 0 user Start Time Z 3 Setpoint temp Start minutes for set point band 3 0 to 59 min 0 user Start Time Z 3 Setpoint temp Cooling set point in band 3 99 9 to 99 9 C 0 user ANA 39 RW Summer Setpoint temp Heating set point in band 3 99 9 to 99 9 C 0
80. frost Max time laximum defrost duration 0 to 32000 8 300 user 4 RW Defrost Min time inimum defrost duration 0 to 32000 S 0 user 5 RW Delay Delay between defrosts in the same circuit 0 to 32000 S 0 user 6 RW between defrost same circuit Delay Delay between defrosts in different circuits 0 to 32000 S 0 user 7 RW between defrost differ circ Defrost Forced compressor off time at start and end defrost 0 to 999 S 60 manufacturer 8 RW Compressor force OFF on start end defrost Defrost Delay in reversing refrigerating cycle for defrost 0 to 999 S 30 manufacturer 9 RW Reversal cycle delay 3 030220431 rel 1 1 10 10 06 33 UCI am m i Ww Unit of Default Ana l Supervisor R Menu description Extended description Min max limits ese Access nt Dig address RW Sliding defros Enable sliding defrost function N Y N user Enable Sliding defros Minimum set point to start defrost accessible with sliding defrost 0 0 to 99 9 C bar 0 5 user ANA 23 RW Defrost start min function Set point Sliding defros Outside temperature threshold to start sliding defrost action 99 9 to 99 9 C 0 0 user External temperature Start Sliding defros Outside temperature thre
81. gured A028 Probe B4 faulty or disconnected A 60s x Ope ating mode an pe configured A029 Probe B5 faulty or disconnected A 60s X X X A030 Probe B6 faulty or disconnected A 60s X X X A031 Probe B7 faulty or disconnected A 60s x xn A032 Probe B8 faulty or disconnected A 60s xn x ii condena units TUR s control input A033 Probe B9 faulty or disconnected A 60s A034 Probe B10 faulty or disconnected Al M 60s Fan main pump operating hour nose threshold um A036 Compressor 1 operating hour threshold sys circuit 1 030220431 rel 1 1 10 10 06 7 c3 Compressor 2 operating hour threshold A037 SYS circuit 1 A038 Compresso 3 operating hour threshold sys circuit 1 A039 Compresso 1 operating hour threshold sys circuit 2 A040 Compresso 2 operating hour threshold sys circuit 2 A041 Compresso 3 operating hour threshold sys circuit 2 A042 ain pump 2 operating hour threshold SYS Disables all the functions relating to the A043 Clock board broken or not connected SYS 5m approx System clock Start Mi A044 Low pressure circ 1 Transducer A Steady X Itis Rays od chiller heat pump defrost operation Start px A
82. he control band is divided into a uniform number of steps equal to the number of fans installed for the circuit in question Single or separate condensers evaporators can be chosen with single coils the fans will be controlled by the higher lower pressure temperature with the second separate coil each pressure sensor temperature controls its own fan or group of fans Modulating condenser evaporator operation linked to the pressure or temperature sensor reading The fans will be controlled by a 0 to 10 V or PWM analogue output in proportion to the request from the pressure temperature sensors Single or separate condensers evaporators can be chosen with single coils the fans will be controlled by the higher lower pressure temperature with the second separate coil each pressure sensor temperature controls its own fan or group of fans Condenser fan control in chiller operation Fig 7 0 Condenser control devices and alarms Speed K OFD 3 3 REC 3 CPT bar C STPC Condenser control set point RBC Condenser control band OFFD Deactivation differential HYST Deactivation hysteresis 0 5bar 1 C MINV Minimum fan speed threshold MAXV Maximum fan speed threshold CPT Condensing pressure temperature With reference to the previous graph o pressure temperature values between STPC and STPC RBC cause the modulation of the condenser fan speed with proportional control between the minimum and maximum voltage set o press
83. ial limit 9 9 to 9 9 C 2 0 user F r parameters software FI Software version first digit direct FI Software version second digit F3 Software version day F4 Software version month F5 Software version year 030220431 rel 1 1 10 10 06 26 uC3 t parameters clock setting c3 tl Hour setting 0 to 23 h t2 Minutes setting 0 to 59 min t3 Day setting 1t031 day t4 Month setting 1to 12 month tb Year setting 0 to 99 year 4 3 List of parameters with the pGD user interface Menu description Extended description Min max limits e Default Access E De Ne Hour System hours h INT 77 R inutes System minutes m INT 76 R Day System day onth System month Year System year cart Ambient air temperature air air units n evap t Evaporator water inlet temperature i cond Condenser water inlet temperature water water units SG n dift Differential between evaporator inlet temperature and outside temperature Air outlet temperature air air units Evaporator water outlet temperature Condenser water outlet temperature water water units C Differential between evaporator outlet temperature and outside temperature Ext control External temp control request percentage condensi
84. ifreeze heater Valvola inversione Reversing valve Compressore 1 ci 4 Compressor 17 Pompa dell acqua Water pump Alta pressione Bassa pressione e High pressure Low pressure Termico comp 3 030220431 rel 1 1 10 10 06 Comp overload Led Compressore 2 ci 1 Compressor 2 Fig 3 b g 22 uC3 c3 3 29 Reverse cycle water cooled condensing unit two circuits B3 Sonda condensatore Condenser probe Sonda condensatore Condensatore 1 Condenser probe Condenser 1 Condensatore 2 Condenser 2 Resistenza antigelo 2 Resistenza antigelo 1 Antifreeze heater 2 Antifreeze heater 1 Valvola inversione Valvola inversione Reversing valve Reversing valve Compressore 1 _ Circ 2 Compressor 1 Compressore 1 Circ 1 Compressor 1 Alta pressione 2 Bassa pressione 2 Alta pressione 1 Bassa pressione High pressure 2 Low pressure 2 High pressure1 Low pressure1 Termico comp 1 il Le overload 1 ii Le _Circ 1 Compressor 2 Termico comp 2 Le 2 overload T 2_Circ 2 Compressor 2 Flussostato Flux switch Pompa dell acqua Water pump Fig 3 b h 3 030220431 rel 1 1 10 10 06 23 4 Parameters uc3 4 1 Menu layout Livello Nome Livel
85. ilatore di mandata Compressore 1 5i Compressor 17 Supply fan Compressor 1 Alta pressione 1 Bassa pressione 1 BI Bassa pressione 2 Alta pressione 2 High pressure 1 Low pressure Low pressure 2 High pressure 2 Termico comp 1 Sonda ambiente Termico comp 2 Comp 1 overload Ambient probe Comp 2 overload Compressore 2 _Circ 1 Compressore 2 Cic Compressor 2 Compressor 2 Fig 3 a e 3 6 AIR AIR heat pumps two circuits 1 condenser fan circuit Termico ventilatore condensatore Condenser fan overload Sonda condensatore 1 Condenser 1 probe Fan Evaporatore1 Evaporatori Valvola inversione 1 Reversing valve 1 Supply fan overload Compressore 1 Gi Compressor 1 We Supply fan le Sonda ambiente Alta pressione 1 Bassa pressione 1 High pressure 1 Low pressure1 Termico comp 1 Comp 1 overload Ambient probe Compressore2 cic Compressor27 Fig 3 a f 030220431 rel 1 1 10 10 06 11 Resistenze di riscaldamento 1 e 2 Antifreeze heaters 1 and 2 Termico ventilatore di Ventilatore di mandata Bassa pressione 2 Low pressure 2 Sonda condensatore 2 Condenser 2 probe Valvola inversione 2 Reversing valve 2 Compressore 1 Compressor 1 Alta pressione 2 High pressure 2 Termico comp 2 Comp 2 overload Compressore 2 irc 2 Compressor 2 Cire uc3 3 7 AIR AIR chillers single circuit Termico ventilatore condensatore Condenser fan overload Ventilatore Fan Sonda condensa
86. in fan ain fan thermal overload Overload ev pump Evaporator pump 1 thermal overload ot used Condensing unit digital control 3 4 6 dig inputs Status of digital input 5 Pressost L press 1 Low pressure switch circuit 1 4 6 dig inputs Status of digital input 6 Pressost H press 1 High pressure switch circuit 1 7 9 dig inputs Status of digital input 7 Over comp 1 circ 1 Compressor 1 thermal overload circuit 1 7 9 dig inputs Status of digital input 8 Over comp 2 circ 1 Compressor 2 thermal overload circuit 1 7 9 dig inputs Status of digital input 9 Overl fan 1 Circ 1 Condenser fan 1 thermal overload circuit 1 Overload cond pump Condenser pump thermal overload 10 12 dig inputs Status of digital input 10 Pressost L press 2 Low pressure switch circuit 2 10 12 dig inputs Status of digital input 11 Pressost H press 2 High pressure switch circuit 2 10 12 dig inputs Status of digital input 12 Over comp 1 circ 2 Compressor 1 thermal overload circuit 2 13 15 dig inputs Status of digital input 13 Over comp 2 circ 2 Compressor 2 thermal overload circuit 2 030220431 rel 1 1 10 10 06 30 UCI Menu descri
87. in mm2 2 39 01 2140 14 39 00 0038 AWG18 to 24 1 00 to 0 21 39 00 0046 AWG22 to 28 0 5 to 0 10 1 39 01 2060 6 1 39 01 2080 8 1 39 01 2100 10 1 39 01 2100 10 39 00 0077 AWG16 1 50 2 39 01 2120 12 39 00 0077 AWG16 1 50 Plug in terminals Number of connectors Phoenix code of the connector Number of pins Cable cross section Cable cross section allowed in mm2 allowed in AWG MC 1 5 3 ST 3 81 3 AWG18 24 1 00 to 0 21 MC 1 5 2 ST 3 81 2 AWG18 24 1 00 to 0 21 030220431 rel 1 1 10 10 06 8 3 Applications 3 1 AIR AIR units single circuit Termico ventilatore condensatore Condenser fan overload Ventilatore Fan Sonda condensatore Condenser probe B3 4 Evaporatore Evaporator T Compressore 1 Circ 1 Compressor 1 Alta pressione Bassa pressione High pressure Low pressure Termico compressore Compressor overload Co Compressore 2 Circ 1 Compressor 2 Le Compressore3 cie 4 Sonda mandata Supply probe B2 Resistenza di riscaldamento Electrical heater Termico ventilatore di mandata Supply fan overload Ventilatore di mandata Supply fan Sonda ambiente Ambient probe B1 Compressor3 Fig 3 a a 3 2 AIR AIR units two circuits Termico ventilatore condensatore 1 Termico ventilatore condensatore 2 Condenser fan overload 1 Condenser fan overload 2 Sonda mandata Ventilatore Fan a ply probe Ventilatore Fan Sonda condensatore Sonda condensatore Conden
88. int limits Low Winter temperature laximum limit for setting the set point in heating 99 9 to 99 9 C 93 0 user ANA 10 RW setpoint limits High Setpoin Enable set point compensation N Y N user compensation enabled laximum laximum compensation value 99 9 to 99 9 C 5 0 user ANA 26 RW compensation Summer compens inimum outside temperature for compensation in cooling 99 9 to 99 9 C 25 0 user ANA 27 RW Start temp Summer compens laximum outside temperature for compensation in cooling 99 9 to 99 9 C 35 0 user ANA 28 RW End temp Winter compens inimum outside temperature for compensation in heating 99 9 to 99 9 C 10 0 user ANA 29 RW Start temp Winter compens laximum outside temperature for compensation in heating 99 9 to 99 9 C 0 0 user ANA 30 RW End temp Temperature Type of temperature control INLET PROP INLET manufacturer regulation OUTLET DEAD ZONE PROP ype nle Proportional or proportional integral inlet control P P manufacturer Regulation PHI Type nle ntegral time for proportional integral control 0 to 9999 S 600 manufacturer 42 RW Regulation ntegr time Outle laximum time between starts with outlet control 0 to 9999 S 20 manufacturer 43 RW regulation lax time ON Outle inimum time between starts with outlet control 0 to 9999 S 20 manufacturer 44 RW regulation in time ON Outle laximum time between stops with outlet control 0 to 9999 S 10 manufacturer 45 RW regulation ax time OFF 3 030220431 rel 1 1 10
89. ircuit 2 Evaporator water inlet temperature Water outlet temperature Outside temperature B7 B8 Remote set point B9 Evaporator 1 water outlet temperature B10 Evaporator 2 water outlet temperature DIGITAL OUTPUTS 01 Compressor 1 circuit 1 Winding A compressor 1 circuit 1 02 Compressor 2 circuit 1 Winding B compressor 1 circuit 1 Part load compressor 1 circuit 1 03 Liquid solenoid circuit 1 Compressor 3 circuit 1 Part load compressor 1 circuit 1 Condenser fan 2 circuit 1 04 Condenser fan 1 circuit 1 05 Pump 06 Compressor 1 circuit 2 Winding A compressor 1 circuit 2 07 Compressor 2 circuit 2 Winding B compressor 1 circuit 2 Compressor 1 capacity control circuit 2 08 Liquid solenoid circuit 2 Compressor 3 circuit 2 Compressor 1 capacity control circuit 2 Condenser fan 2 circuit 2 09 Condenser fan 1 circuit 2 Condenser fan 2 circuit 1 010 General alarm 011 Antifreeze heater circuit 1 012 Antifreeze heater circuit 2 013 014 ANALOGUE OUTPUTS Y1 0 to 10 V condenser fan inverter circuit 1 Y2 0 to 10 V condenser fan inverter circuit 2 Y3 PWM condenser fan inverter circuit 1 Y4 PWM condenser fan inverter circuit 2 YO Pump 2 Y6 Important uc3 If using a single condenser with 2 fans configured and 3 compressors configured in the event of step control the dedicated outputs will be number 4 and number 9
90. itch D3 Remote ON OFF D4 Main fan thermal overload D5 Low pressure switch circuit 1 D6 High pressure switch circuit 1 D7 Compressor 1 thermal overload circuit 1 D8 Compressor 2 thermal overload circuit 1 D9 Condenser fan 1 thermal overload circuit 1 D10 Low pressure switch circuit 2 D11 High pressure switch circuit 2 D12 Compressor 1 thermal overload circuit 2 D13 Compressor 2 thermal overload circuit 2 D14 Condenser fan 1 thermal overload circuit 2 D15 D16 Compressor 3 thermal overload circuit 1 Condenser fan 2 thermal overload circuit 1 D17 Compressor 3 thermal overload circuit 2 Condenser fan 2 thermal overload circuit 2 D18 ANALOGUE INPUTS B1 Condensing temperature circuit 1 Evaporation pressure circuit 1 External water storage temperature B2 Condensing temperature circuit 2 Evaporation pressure circuit 2 B3 Condensing pressure circuit 1 B4 Condensing pressure circuit 2 B5 Room temperature B6 Air outlet temp B7 Outside temperature B8 Remote set point B9 B10 DIGITAL OUTPUTS 01 Compressor 1 circuit 1 Winding A compressor 1 circuit 1 02 Compressor 2 circuit 1 Winding B compressor 1 circuit 1 Part load compressor 1 circuit 1 03 Liquid solenoid circuit 1 Compressor 3 circuit 1 Part load compressor 1 circuit 1 Condenser fan 2 circuit 1 04 Condenser fan 1 circuit 1 05 Circulating fan 06 Compressor 1 circuit 2 Winding A compressor 1 circuit 2 07 Compressor 2 circuit 2 Winding B compressor 1 circuit 2 Compressor 1 ca
91. l overload circuit 2 D13 Compressor 2 thermal overload circuit 2 D14 Condenser flow switch D15 Cooling heating selection D16 Compressor 3 thermal overload circuit 1 D17 Compressor 3 thermal overload circuit 2 D18 Evaporator pump 2 thermal overload ANALOGUE INPUTS B1 Condensing temperature circuit 1 Evaporation pressure circuit 1 B2 Condensing temperature circuit 2 Evaporation pressure circuit 2 B3 Condensing pressure circuit 1 B4 Condensing pressure circuit 2 B5 Evaporator water inlet temperature B6 Water outlet temperature B7 Outside temperature B8 Remote set point B9 Evaporator 1 water outlet temperature B10 Evaporator 2 water outlet temperature DIGITAL OUTPUTS 01 Compressor 1 circuit 1 Winding A compressor 1 circuit 1 02 Compressor 2 circuit 1 Winding B compressor 1 circuit 1 Part load compressor 1 circuit 1 03 Liquid solenoid circuit 1 Compressor 3 circuit 1 Part load compressor 1 circuit 1 04 Defrost heater circuit 1 05 Pump 06 Compressor 1 circuit 2 Winding A compressor 1 circuit 2 07 Compressor 2 circuit 2 Winding B compressor 1 circuit 2 Compressor 1 capacity control circuit 2 08 Liquid solenoid circuit 2 Compressor 3 circuit 2 Compressor 1 capacity control circuit 2 Pump 2 09 Defrost heater circuit 2 010 General alarm 011 Antifreeze heater circuit 1 012 Antifreeze heater circuit 2 Support heater in heating operation 013 Reversing valve 014 Condenser pump ANALOGUE OUTPUTS y1 Y2 Y3 Y4 Y5 Pump 2 Y6
92. led Enable operation of compressor 1 circuit 1 Y Y user DIG 5 RW C1 Compressors enabled Enable operation of compressor 2 circuit 1 Y Y user DIG 6 RW C2 Compressors enabled Enable operation of compressor 3 circuit 1 Y Y user DIG 7 RW C3 Compressors enabled Enable operation of compressor 1 circuit 2 Y Y user DIG 8 RW C1 2 030220431 rel 1 1 10 10 06 29 UCI m m we Unit of Default Ana l Supervisor R Menu description Extended description Min max limits sacra Access nt Dig address RW Compressors enabled Enable operation of compressor 2 circuit 2 N Y user DIG 9 RW C2 2 Compressors enabled Enable operation of compressor 3 circuit 2 N Y User DIG 10 RW C372 12 analog Value of analogue input B1 inputs Tank temp Boiler temperature Condensing temperature 1 99 9 to 99 9 C bar ANA 43 R T condens 1 P evapor 1 Evaporation pressure 1 A Condenser inlet temperature water water units T in cond 1 2 analog inputs Value of analogue input B2 ot used Condensing temperature 2 P T condens 2 Evaporation pressure 2 AOS C bar ANAL ba P evapor 2 Condenser outlet temperature water water units T out cond 3 4 analo inputs Value of analogue input Ba 99 9 to 99 9 bar ANA 45 R 5 Condensing pressure 1 condens 1 3 4 analo inputs Value of a al gue input B4 99 9 to 99 9 bar ANA 46 R S Condensing press
93. lo Password Men principale Level Level name Main Men Ae Direct No password RUN User 22 Prg S ore SES Factory 66 Inserimento Password Setting Password z i arametri Parametri t e Parameters Prg Sel Parameters t _ y s o L x Y L LA Impostazione sonde PA T Parametri F r mposa orologio S Probe settings Parametri A Parameters F r A ime settings yy Parameters A Por F lo ES H S Software Antighiaccio Antifreeze he A fe M 2 Parametri r P ib Parameters r Acad T e 3 A Regolazione Sensori Regulation Probes i Je wA Y Parametri P Parametri c Parameters P Parameters c E D _ e Allarmi Compressori Alarm Compressor E e g3 Nx E Parametri H Parametri d Parameters H Parameters d H Ead c Impostazione unit E m F P e Unit setting E 5 Defrost per modificare to modify E Ventilatori CA Probe configuration A Antifreeze B Input Output C Compressors d Defrost F Condenser H Unit configuration P Alarm configuration r Control parameters F4 Software version t Clock Fan Sel t Prg Sel per selezionare to select Valore parametri F1 S Parametri F1 Or Parameter Values F1 Parameters F1 Sel i Sore per salvare la modifica to save the mo
94. menu Green LED always on 2 1 Passwords and levels of access The user interface has the parameters organised into three distinct levels of access each of which containing a different number of visible parameters free access access to the screens displaying the inputs and outputs unit on off set point enter password to access the protected parameters user level password 22 all the free access parameters plus the main control parameters maintenance parameters alarms manufacturer level password 66 complete access to the unit configuration parameters from the type of devices controlled to the definition of the control parameters The parameters are organised by uniform groups accessible from specific sliding menus The following diagram shows the method for accessing the various groups of parameters and their layout From inside a group of parameters pressing Esc moves the cursor to the sliding menu for selecting the parameters pressing Prog moves to the main menu 2 2 Type of connectors The connectors and the cables can be purchased separately from CAREL MCH3CON or directly from the manufacturers Molex and Phoenix For the crimping of the contacts use the special olex tool code 69008 0724 Mini fit terminals Number of Molex code of the connector Number of pins Molex code of the contact Cable cross section Cable cross section connectors allowed in AWG allowed
95. mperature Control Inputs used e Evaporator inlet temperature e Evaporator outlet temperature e Outside air temperature e Room temperature acqua terminal Parameters used Type of unit Total number of compressors Number of load steps Type of temperature control Outputs used e Liquid solenoid e Compressor start relay e Compressor capacity control relay Description of operation Proportional band for inlet control or Dead zone for outlet control Temperature difference delta between reference and controlled value uc3 The temperature control differential is based on the difference between a reference temperature and a controlled temperature A calculated Reference temperature Controlled temperature The value calculated in this way is compared against the rated value Depending on the unit operating mode cooling or heating the following situations may occur Heating A calculated gt rated A Cooling Compressors On A calculated rated Compressors On The purpose of this function is to maintain a constant temperature difference between two components in a system with different thermal inertia by acting on only one of the values measured The controlled temperature is defined as the component with the lower thermal inertia The reference temperature is defined as the component with the higher thermal inertia As the unit can operate in cooling or heating mode as
96. nalogue inputs 1 and 2 HA e Antifreeze heater set point A3 e Antifreeze heater differential A4 e Support heater set point in cooling mode A5 e Support heater differential in cooling mode A6 e Support heater set point 1 in heating mode A7 e Support heater differential 1 in heating mode A8 e Support heater set point 2 in heating mode A9 e Support heater differential 1 in heating mode A10 e Delay in activation of the support heater in heating mode A11 e Select probe for cooling support control in air air units A e Outside air set point to enable support heater A e Outside air differential to enable support heater A e Boiler temperature set point to enable support heater A e Boiler temperature differential to enable support heater A e Active operating mode chiller heat pump main Outputs used e Status of digital output 11 Heater 1 B39 e Status of digital output 12 Heater 2 B40 Antifreeze heater To prevent the activation of the antifreeze protection one or more electric heaters are used immersed in the flow of water at the evaporator and controlled based on by a set point and differential The activation of the antifreeze heater causes the total shutdown of the compressors or in any case disables the cooling devices until the temperature returns above the heater set point differential Support heater in cooling To prevent the activation of the minimum room temperature limit protection in air air units an elec
97. nd scrolls the parameters Green LED Green LED On main menu n compressors on Off other menu Off compressors off Flashing compressor alarm Fig 1 a 3 030220431 rel 1 1 10 10 06 7 c3 1 3 Programming procedure 1 press up or down 2 press Sel 3 enter the password using up or down 4 press Sel to confirm If the password is correct the parameters menu automatically appears if the password is wrong the value 0 is displayed Repeat the operation by repeating the procedure or press Prg to exit 2 pGDO terminal The display covers 4 rows by 20 characters In normal operation the display shows the evaporator inlet and outlet temperatures the unit status ON OFF and the mode cooling heating The up and down buttons can be used to immediately enter in the user menu set point ON OFF and COOLING HEATING mode Entering the password in the screen following is possible enter in programming of all the parameters Prg button enters the parameters menu if already in the menu goes back one level at a time until reaching the main screen Amber LED Up button enters the user menu and On parameters menu Off other meni changes the selection Prg button enters the parameters menu Amber LED On main menu Off other menu Enter button confirms the selection or the settings Down button enters the user menu and changes the selection Fig 1 b Esc button returns to the previous
98. ng operation Based on the 4 to 20 mA input signal linear conversion will be performed between the end values set Remote set point for analogue input B8 The limits for calculating the remote set point will be the minimum and maximum values set for the corresponding password protected parameter on set point screen MaxSTP 4 MaxSTP Maximum remote set point limit MinSTP Minimum remote set point limit RT 4mA 20mA B8 Fig 6 a 4 030220431 rel 1 1 10 10 06 45 CS Time bands for varying the set point By enabling control of the clock board the management of 4 daily set point time bands can be configured Each time band features the start and end time and the associated set point When the time band starts the active set point is replaced by the value set for the active time band irrespective of whether the analogue input for the remote set point is activated Set point compensation for outside air temperature The working set point can be adjusted according to the outside air temperature Normally this function is used in installations where greater priority is given to comfort for example in a shop where people enter and exit frequently an excessive temperature difference between the inside and outside may be annoying to users and negative to their health This function increases or decreases the unit set point according to the outside temperature measured adding an offset to set point set as described above that is directl
99. ng units 96 INT 51 R UNIT ON OFF FROM ALARM OFF FROM SUPERV OFF FROM BANDS OFF FROM DIG IN Unit status OFF FROM BUTTON INT 50 R ANTIFREEZE PROBE P LOAD PREVENT HP DEFROST CIRC 1 DEFROST CIRC 2 T Active operating mode chiller heat pump DIG 46 R UNIT OFF On Off unit Unit ON OFF from panel UNIT ON COOLING Running mode Cooling Heating from panel HEATING nsert password User Manufacturer access password 0 to 9999 onm em rano press Select pGD user interface language ENGLISH ENGLISH ESPANOL or change Probe offset B1 Calibration offset for analogue input B1 9 9 to 9 9 C bar 0 user Probe offset B2 Calibration offset for analogue input B2 9 9 to 9 9 C bar 0 user Probe offset B3 Calibration offset for analogue input B3 9 9 to 9 9 bar 0 user Probe offset B4 Calibration offset for analogue input B4 9 9 to 9 9 bar 0 user Probe offset B5 Calibration offset for analogue input B5 9 9 to 9 9 C 0 user Probe offset B6 Calibration offset for analogue input B6 9 9 to 9 9 C 0 user Probe offset B7 Calibration offset for analogue input B7 9 9 to 9 9 C 0 user Probe offset B8 Calibration offset for analogue input B8 9 9 to 9 9 C 0 user Probe offset B9 Calibration offset for analogue input B9 9 9 to 9 9 C 0 user Probe offset B10 Calibration offset for analogue input B10 9 9 to 9 9 C 0 user Enable probe Enable analogue input B B1 Tank temp Boiler temperature B1 T condens 1 Condensing temperature 1 N Y N manufactu
100. ngle circuiti iii E ina i 9 3 2 AIR AIR units WO CIRCUITS tii dao En pe cru lunes Pe TED INDE EMEN d EE EE 9 3 3 AIR AIR units two circuits 1 condenser fan circuit 10 3 4 AIR AlR heat pumps single CIFGUll estoit rtt RD HIRED ERE ERU Dre eee ER ERE oic arnie 10 3 5 AIR AIR heat pumps two CIrCUIES 12 leuc oed ia lea 11 3 6 AIR AIR heat pumps two circuits 1 condenser fan circuit cece ee eeeeec cece eee ee cee ttnn strt sees eaaeaecesecaaaaeeeeeeeseseesieeeeeeeess 11 3 7 AIRVAIR chillers single CIrCUlt intona A obese casco tebe tare quee edge eese ea dedu lea ret 12 3 8 AIR AIR chillers two circuits 2 condenser fan circuits and 2 evaporators eene enne 12 3 9 AIR WATER chillers two circuits 1 condenser fan CIFCUIt nennen e nnne nnne nnne nnn nr nnne nnn 13 3 10 AIRAWATER heat pumps single circuit i 13 3 11 AIR WATER heat pumps 2 condenser fan circuits i 14 3 12 AIR WATER heat pumps two circuits 1 condenser fan circuit eene nete netr nnne nnne nis 14 3 13 WATER WATER chillers single circuit sess enne ene nnnernnnren enhn nr trit nnt nr sls l sd sn nr nnn nlsi sinn nnne risas 15 3 14 WATER WATER chillers two CIFCU S nnne nn I nnne ne nn nnn sese nnne neri nr ess nnn nsn ese snae rese sese ss nnn 15 3 15 WATER WATER chillers two circuits
101. o 9999 60 user INT 33 RW burst running Time ON Pumps Fan OFF time in burst operation 0 to 9999 60 user INT 34 RW burst running Time OFF Pump Operating hour threshold for the rotation of the evaporator pumps 0 to 9999 12 user INT 35 RW rotation every hours Enable on off by Enable unit ON OFF from digital input N Y N user digital input Enable sum win by Enable cooling heating selection from digital input N Y N user digital input Enable on off by Enable unit ON OFF from supervisor N Y N user INT 55 RW supervisor Enable sum win by Enable cooling heating selection from supervisor N Y N user INT 45 RW supervisor Auto revers running 0 to 999 0 user INT 36 RW mode delay Force off time device for change working mode CH HP summer winter Supervisor Select type of serial protocol for supervisory network CAREL CAREL user protocol type ODBUS LONWORKS Rs232 ODEM ANALOGUE GSM MODEM Supervisor Serial port communication speed for supervisory network 200 RS485 RS422 19200 user baud rate 2400 RS485 RS422 ONLY 4800 RS485 RS422 RS485 9600 RS485 RS422 9200 ONLY RS485 Supervisor Serial identification number for supervisory network 0 to 200 1 user Ident N Max phone n Phone book capacity number of telephone numbers saved 04 1 User Phone book number Active telephone number in phone book 04 User Digits that make up the telephone number user 0 2 3 4 5 6 7 8 9 Modem password Modem password 0 to 9999 0 user Modem rings Numbe
102. o comp 2 Comp 1 overload Comp 2 overload Compressore 2 cie 4 Compressor 2 Compressore 2 Circ 2 Compressor 2 Fig 3 a h 030220431 rel 1 1 10 10 06 12 3 9 AIR WATER chillers two circuits 1 condenser fan circuit Sonda condensatore 1 Sonda condensatore 2 Condenser 1 probe Termico ventilatore condensatore 1 Condenser 2 probe Condenser fan overload 1 B3 4 Ventilatore Fan 1 Flussostato Flow switch Sonda temp di mandata Outlet temp probe B5 Sonda uscita evaporatore 1 Outlet evaporator probe 1 Sonda uscita evaporatore 2 Outlet evaporator probe 2 Resistenza antigelo 1 Evaporatore 1 Antifreeze heater 1 Evaporatore 2 Evaporator 1 Resistenza antigelo 2 Evaporator 2 Antifreeze heater 2 Compressore 1 cir y Compressore 1 irc Compressor 1 Sonda ingresso evaporatore Compressor Inlet evaporator probe Pompa dell acqua BI Water pump Alta pressione 1 Bassa pressione 1 Bassa pressione 2 Alta pressione 2 High pressure 1 Low pressure 1 Low pressure 2 High pressure 2 Termico comp 1 Termico comp 2 Comp 1 overload Comp 2 overload Compressore 2 Ciro 1 Compressore2 Cj Compressor 2 Compressor2 Compressore 3 Ci Compressore 3 Circ 2 Compressor 3 Compressor3 T Fig 3 a i 3 10 AIR WATER heat pumps single circuit Fig 3 a l 3 030220431 rel 1 1 10 10 06 uc3 3 11 AIR WATER heat pumps 2 condenser fan circuits Termico ventilatore condensatore 1 Termico ventilatore condensatore 2
103. of temperature control Lr e Active set point r1 e Temperature control band r10 e Maximum time between starts with outlet control r e Minimum time between starts with outlet control r e Maximum time between stops with outlet control r e Minimum time between stops with outlet control r e Differential for calculating the time between steps with outlet control r e Forced shutdown threshold with outlet control cooling r e Forced shutdown threshold with outlet control heating r 030220431 rel 1 1 10 10 06 47 Outputs used Liquid solenoid circuit 1 Liquid solenoid circuit 2 Compressor 1 circuit 1 Winding A compressor 1 Compressor 2 circuit 1 Compressor 1 capacity control Winding B compressor 1 Compressor 3 circuit 1 Compressor 1 capacity control if Part Winding enabled Compressor 1 circuit 2 Winding A compressor 2 Compressor 2 circuit 2 Compressor 2 capacity control Winding B compressor 2 Compressor 3 circuit 2 Compressor 2 capacity control if Part Winding enabled EXAMPLE OF CONTROL IN THE DEAD ZONE ON CHILLER UNITS Temperature control with dead zone based on the reading of the outlet probe t s STPM RBM Z TVD EOWT Donz HTON LTON DoffZ HTOFF LTOFF Fig 7 c Control set point Control band Dead zone Time variation differential for activation deactivation steps Evaporator water outlet temperature Time Device start zone Maximum time delay for ac
104. or 1 B30 e Winding A compressor 2 B34 e Winding B compressor 2 B35 The pumpdown procedure is performed for the purpose of completely emptying the residual freon from the evaporator in a refrigerant circuit during shutdown The following conditions can cause a refrigerant circuit to shutdown Remote ON OFF unit shutdown from remote contact ON OFF from keypad unit shutdown from display with specific procedure ON OFF from supervisor unit shutdown on signal from supervisory system Thermostat circuit shutdown when temperature set point reached The pumpdown procedure involves the operation of a certain circuit with the liquid solenoid valve de energised closed The pumpdown procedure ends when e the low pressure transducer is activated according to the set end pumpdown threshold e the low pressure switch is activated e the maximum time limit is reached During the pumpdown procedure the low pressure alarm both from transducer and from pressure switch is disabled CMPR t s PDS i CMPR Compressor request t s PDS Pumpdown status LP Low pressure LP CMPS Compressor status t Ts LPSTOP End due to low pressure i TIMESTOP End on reaching maximum time f CMPS t s Time tS LPSTOP TIMESTOP Fig 7 1 030220431 rel 1 1 10 10 06 54 uc3 7 8 Main pump management Inputs used e Evaporator water flow switch B12 e Evaporator pump 1 thermal overload B14 e Evaporator pump 2 th
105. or 3 thermal overload circuit 1 Condenser fan 2 thermal overload circuit 1 D17 Compressor 3 thermal overload circuit 2 Condenser fan 2 thermal overload circuit 2 D18 ANALOGUE INPUTS B1 Condensing temperature circuit 1 Evaporation pressure circuit 1 External water storage temperature B2 Condensing temperature circuit 2 Evaporation pressure circuit 2 B3 Condensing pressure circuit 1 B4 Condensing pressure circuit 2 B5 Room temperature B6 Air outlet temp B7 Outside temperature B8 Remote set point B9 B10 DIGITAL OUTPUTS 01 Compressor 1 circuit 1 Winding A compressor 1 circuit 1 02 Compressor 2 circuit 1 Winding B compressor 1 circuit 1 Part load compressor 1 circuit 1 03 Liquid solenoid circuit 1 Compressor 3 circuit 1 Part load compressor 1 circuit 1 if PART WINDING enabled condenser fan 2 circuit 1 04 Condenser fan 1 circuit 1 05 Circulating fan 06 Compressor 1 circuit 2 Winding A compressor 1 circuit 2 07 Compressor 2 circuit 2 Winding B compressor 1 circuit 2 Compressor 1 capacity control circuit 2 08 Liquid solenoid circuit 2 Compressor 3 circuit 2 Compressor 1 capacity control circuit 2 Condenser fan 2 circuit 2 09 Condenser fan 1 circuit 2 Condenser fan 2 circuit 1 010 General alarm 011 Antifreeze heater circuit 1 012 Antifreeze heater circuit 2 Support heater in heating operation 013 4 way valve circuit 1 014 4 way valve circuit 2 ANALOGUE OUTPUTS Y1 0 to 10 V condenser fan inverter circuit 1 Y2 0 to 1
106. or control set point RBC Evaporator control band OFFD Deactivation differential HYST Deactivation hysteresis 0 5bar 1 C MINV Minimum fan speed threshold MAXV Maximum fan speed threshold CPT Evaporation pressure temperature In heat pump operation the previous observations concerning cooling operation are still valid the function simply operates in the diametrically opposite manner given the different unit operating mode 7 15 Prevent function This function can be enabled in the manufacturer branch and prevents the circuits from being shutdown due to a high pressure alarm When the compressors are on once reaching the set threshold the capacity of the compressor is controlled until the pressure returns below or above the set point by a set differential in cooling or heating mode respectively When the compressors are off once having reached the set threshold the fans are started at maximum speed until the pressure returns to acceptable values for the operation of the unit In units with tandem or trio hermetic compressors the prevent function stops one of the active compressors performing a rotation so as to shutdown a different device each time The compressor shutdown procedure is repeated whenever the pressure temperature exceeds the set prevent threshold or alternatively waits a fixed time of 10 seconds with high low pressure before repeating the shutdown The procedure stops when reaching the minimum number of devices on pe
107. ormed between the compressors and not between the capacity steps LIFO rotation The first compressor to start will be the last to stop The device activation sequence on a unit with 4 compressors is C1 C2 C3 C4 The device deactivation sequence on a unit with 4 compressors is C4 C3 C2 C1 FIFO rotation The first compressor to start will be the first to stop The device activation sequence on a unit with 4 compressors is C1 C2 C3 C4 The device deactivation sequence on a unit with 4 compressors is C1 C2 C3 C4 Rotation by time This type of rotation is based on the count of the device operating hours The compressor with the least number of operating hours will always start first The active compressor with the highest number of operating hours will always stop first The activation of one or more than one alarm that causes one or more compressors to shutdown requires the activation of an equivalent number of devices from those available so as to make up for the variation in active cooling capacity 7 5 TANDEM TRIO compressor rotation Rotation between circuits In the units with tandem or trio compressors in two refrigerant circuits the circuit rotation described is incorporated into the rotation between compressors for the purpose of balancing the quantity of oil in each Whenever the unit is started and the compressors are completely off rotation is performed that involves the alternating start up of the two circuits
108. orresponding circui A094 Driver 3 probe S2 faul DRV X Stops the corresponding circui A095 Driver 4 probe S2 faul DRV X Stops the corresponding circui A096 Driver 1 probe S3 faul DRV X Stops the corresponding circui A097 Driver 2 probe S3 faul DRV X Stops the corresponding circui 3 030220431 rel 1 1 10 10 06 72 uc3 A098 Driver 3 probe S3 fault DRV X Stops the corresponding circuit A099 Driver 4 probe S3 fault DRV M X A100 Driver 1 Go Ahead request DRV M X Prevents the corresponding circuit from starting A101 Driver 2 Go Ahead request DRV M X Prevents the corresponding circuit from starting A102 Driver 3 Go Ahead request DRV M X Prevents the corresponding circuit from starting A103 Driver 4 Go Ahead request DRV M X Prevents the corresponding circuit from starting A104 Driver 1 LAN disconnected SYS M 30s X X Stops the corresponding circuit A105 Driver 2 LAN disconnected SYS M 30s X X Stops the corresponding circuit A106 Driver 3 LAN disconnected SYS M 30s X X Stops the corresponding circuit A107 Driver 4 LAN disconnected SYS M 30s X X Stops the corresponding circuit A108 Driver 1 autosetup not completed SYS M A109 Driver 2 autosetup not completed SYS M A110 Driver 3 autosetup not completed SYS M A111 Driver 4 autosetup not completed SYS
109. ost recent variation determines the actual status if enabled the digital input has absolute priority over the other two 7 12 ON OFF time bands Inputs used e System hours main e System minutes main e System day main e System month main e System year main Parameters used e Enable control of the clock board t6 e Hour setting t1 e Minutes setting t2 e Day setting t3 e Month setting t4 e Year setting tb e Enable unit ON OFF time bands t e Enable set point time bands t e Configure time band parameters day t Outputs used ON OFF time bands If control of the clock board is enabled and the board is fitted and operating the program can control 4 different types of time band with separate application on each day of the week The time bands set only take effect if the unit has been switched on from the button 030220431 rel 1 1 10 10 06 57 c3 Band 1 Four values are set respectively the start and end times for two periods within which the unit is on Band 2 Two values are set respectively the start and end time band within which the unit is on OFF ON OFF Band 3 The unit is forced ON without time limits Band 4 The unit is forced OFF without time limits Set point time bands If control of the clock board is enabled and the board is fitted and operating the program can control 4 different types of time band with changes in the set point applied on each day of the week
110. pacity control circuit 2 08 Liquid solenoid circuit 2 Compressor 3 circuit 2 Compressor 1 capacity control circuit 2 Condenser fan 2 circuit 2 09 Condenser fan 1 circuit 2 Condenser fan 2 circuit 1 010 General alarm 011 Antifreeze heater circuit 1 012 Antifreeze heater circuit 2 013 014 ANALOGUE OUTPUTS YI 0 to 10 V condenser fan inverter circuit 1 Y2 0 to 10 V condenser fan inverter circuit 2 Y3 PWM condenser fan inverter circuit 1 Y4 PWM condenser fan inverter circuit 2 Y5 Y6 Important uC3 If using a single condenser with 2 fans configured and 3 compressors configured in the event of step control the dedicated outputs will be number 4 and number 9 030220431 rel 1 1 10 10 06 62 8 1 2 Cooling Heat pump DIGITAL INPUTS D1 Serious alarm D2 Air flow switch D3 Remote ON OFF D4 Main fan thermal overload D5 Low pressure switch circuit 1 D6 High pressure switch circuit 1 D7 Compressor 1 thermal overload circuit 1 D8 Compressor 2 thermal overload circuit 1 D9 Condenser fan 1 thermal overload circuit 1 D10 Low pressure switch circuit 2 D11 High pressure switch circuit 2 D12 Compressor 1 thermal overload circuit 2 D13 Compressor 2 thermal overload circuit 2 D14 Condenser fan 1 thermal overload circuit 2 D15 D16 Compress
111. point DIFF AFH Antifreeze heater differential AFH Antifreeze heater EOWT Evaporator water outlet temperature Antifreeze alarm See the antifreeze alarm in the chapter on the alarms 3 030220431 rel 1 1 10 10 06 58 7 14 Condenser evaporator control Inputs used Condensing temperature 1 Condensing temperature 2 Outside air temperature Condensing pressure 1 Condensing pressure 2 Parameters used Type of condenser control Number of condensers installed Type of condensing devices controlled Total number of fans installed Forcing time when starting the condenser control by temperature Maximum voltage threshold for Triac Minimum voltage threshold for Triac Amplitude impulse for phase control Condenser control set point cooling Condenser differential cooling Evaporator set point heating Evaporator differential heating Fan operation differential at minimum speed Maximum fan speed with inverter Minimum fan speed with inverter Speed up time with inverter Enable high pressure prevent High pressure prevent set point cooling High pressure prevent differential cooling Low pressure prevent set point heating Low pressure prevent differential heating Condenser operating mode in the event of probe fault End prevent delay Start hour for low noise operation Start minutes for low noise operation End hour for low noise operation End minutes for low noise operation Low noise set point in cooling Low noise set
112. pressor 2 circuit 1 Compressor 1 capacity control B30 Winding B compressor 1 e Compressor 3 circuit 1 B31 Compressor 1 capacity control if Part Winding enabled e Compressor 1 circuit 2 Winding A compressor 2 B34 e Compressor 2 circuit 2 Compressor 2 capacity control B35 Winding B compressor 2 e Compressor 3 circuit 2 B36 Compressor 2 capacity control if Part Winding enabled 030220431 rel 1 1 10 10 06 52 c3 Minimum compressor on time This defines a guaranteed minimum ON time for the compressors once activated the compressors will operate for this time irrespective of the temperature control request status Only the activation of a protector will cause the device to shutdown earlier CREQ Compressor request CREQ CMP Compressor status MONT Minimum compressor on time h t Time l t s CMP i t s i MONT Fig 7 f Minimum compressor off time This defines the minimum guaranteed OFF time for the compressors in response to any shutdown signal due to the temperature conditions or an alarm Even if called to start a compressor cannot be switched on before this time elapses CREQ Compressor request CREQ CMP Compressor status MOFFT Minimum compressor off time i ds t Time i CMP t lt gt is MOFFT Fig 7 9 Minimum time between starts of different compressors This defines the minimum guaranteed time between the starts of two different compressors this prevents simultaneous start
113. ption Extended description Min max limits SI poruk Access dic pai e 3 15 dig inputs Status of digital input 14 Overl fan 2 Circ 1 Condenser fan 2 thermal overload circuit 1 1 condenser Overl fan 1 Circ 2 Condenser fan 1 thermal overload circuit 2 2 condensers Cond flow state Condenser water flow switch water water units E oaa Status of digital input 15 Summer Winter Select cooling heating from digital input if LIE 5 Status of digital input 16 Condenser fan 2 thermal overload circuit 1 2 condensers 4 fans Overl fan 2 Circ 1 m SOAM A AA Compressor 3 thermal overload circuit 1 units with trio compressors Over comp 3 circ 1 if a 5 Status of digital input 17 q Condenser fan 2 thermal overload circuit 2 2 condensers 4 fans Overl fan 2 Circ 2 i meii Compressor 3 thermal overload circuit 2 units with trio compressors Over comp 3 circ 2 t SOC Status of digital input 18 Evaporator pump 2 thermal overload Overload pump 2 auton Control step 4 Condensing unit digital control 4 3 dig outputs Status of digital output 1 Comp 1 circ Compressor 1 circuit 1 DIG 25 R Winding A comp 1 Winding A compressor 1 3 dig outputs Status of digital output 2 Comp 2 circ Compressor 2 circuit 1 DIG 26 R Unload comp 1 Compressor 1 capacity control Winding B comp 1 Winding B compressor 1 RUM 3 Status of digital output 3 Cond fan 2 circ 1 Fan circuit ERE Comp 3 circ i Compressor 3 circuit 1 DIG 27 R So dec cit 1 Liquid solenoid circuit 1 oad
114. pump DIGITAL INPUTS D 1 Serious alarm Remote ON OFF with digital controls Serious alarm with analogue control D2 Compressor 1 control with digital controls Not used with analogue control D3 Compressor 2 control with digital controls Remote ON OFF with analogue control D4 Compressor 3 control with tandem circuits and with digital controls Compressor 3 and 4 control with trio circuits and with digital controls Not used with analogue control D5 Low pressure switch circuit 1 D6 High pressure switch circuit 1 D7 Compressor 1 thermal overload circuit 1 D8 Compressor 2 thermal overload circuit 1 D 9 Condenser fan 1 thermal overload circuit 1 D10 Low pressure switch circuit 2 D11 High pressure switch circuit 2 D12 Compressor 1 thermal overload circuit 2 D13 Compressor 2 thermal overload circuit 2 D14 Condenser fan 1 thermal overload circuit 2 D15 Cooling heating selection D16 Compressor 3 thermal overload circuit 1 Condenser fan 2 thermal overload circuit 1 D17 Compressor 3 thermal overload circuit 2 Condenser fan 2 thermal overload circuit 2 D18 Compressor 4 control with tandem circuits and with digital controls Compressor 5 and 6 control with trio circuits and with digital controls Not used with analogue control ANALOGUE INPUTS
115. pump Mr c3 reversal on the refrigerant circuit two circuits Flussostato Flow switch B5 Sonda uscita evaporatore Outlet evaporator probe B7 i Sonda uscita evaporatore 1 Sonda temp Outlet evaporator probe 1 B6 V acqua cond 2 B2 Sonda uscita evaporatore 2 Outlet evaporator probe 2 Water cond 2 temp probe Condensatore 2 Condenser 2 Evaporatore 1 Evaporator 1 Resistenza antigelo 2 Evaporatore 2 Antifreeze heater 2 Evaporator 2 Valvola inversione 2 Reversing valve 2 Sonda ingresso evaporatore Inlet evaporator probe B1 Compressore 1 Gir Compressor 1 7 HO Bassa pressione 2 Low pressure 2 Pompa dell acqua Water pump Alta pressione 2 High pressure 2 Termico comp 2 Comp 2 overload Compressore 2 cic Compressor 2 Fig 3 a s 3 18 WATER WATER heat pumps with reversal on the refrigerant circuit two circuits 1 evaporator Sonda condensatore 1 Condenser 1 probe Condensatore 1 Condenser 1 Resistenza antigelo 1 Antifreeze heater 1 Valvola inversione 1 Reversing valve 1 Compressore 1 _ Compressor 1 7 Alta pressione 1 High pressure 1 Termico comp 1 Comp 1 overload Compressore2 ci 4 Compressor 2 Pompa dell acqua d Water pump 3 030220431 rel 1 1 10 10 06 Sonda uscita evaporatore 1 Outlet evaporator probe 1 Bassa pressione 1 Low pressure 1 Flussostato Flow switch Sonda condensatore 2 Condenser 2 probe Cond
116. r circuit In units with capacity controlled semi hermetic compressors the prevent function activates the load steps with the aim of preventing the compressor from shutting down 7 16 Low noise function This function is used to reduce the noise generated by the unit due to the condenser evaporator fans at specific times Once the start and end times have been defined for the Low Noise function the unit control set point will be modified in such period by a set value A set point is defined for cooling operation and another for heating operation applied according to the set time band in relation to the operating mode that is active on the unit Setting the same start and end times disables the function 7 17 Start with hot condenser This function only applies to air water units in cooling operation with condenser control based on the temperature of the coil When activating a refrigerant circuit if the temperature measured at the condenser is above 20 0 C when starting the condenser temperature corresponds to the outside air temperature the condenser fans are forced on at the maximum speed for a time equal to the set forcing time when starting 3 030220431 rel 1 1 10 10 06 61 8 Map of outputs 8 1 8 1 1 Air air units Cooling only DIGITAL INPUTS D1 Serious alarm D2 Air flow sw
117. r of rings 0to9 3 user 030220431 rel 1 1 10 10 06 35 UCI a m sui Unit of Default Ana l Supervisor R Menu description Extended description Min max limits cure Access nt Dig address RW Modem type Type of modem Tone Tone user Pulse SMS send test Send test SMS an SMS is sent with a test message Y user SMS send enable Enable send SMS in response to an alarm Y Y user EXTERNAL MODEM Status of the modem Ext modem standby GSM MODEM nitialisation Status Search GSM network odem standby odem alarm nit error Enable PIN GSM network not found SMS saturation Send SMS odem connected odem calling Field Percentage of signal reception for the GSM modem 0 to 100 96 Temporary modem error Temp error Permanent modem error Perm error Time next call Waiting time for new call after failed attempt 0 S 0 Language mask Enable display of change language screen when starting unit Y x user visualization on start Reset eventi SMS Delete list of SMS messages sent or to be sent Y N manufacturer Restore Start board memory delete procedure and restore default values EY N manufacturer default values Condensation Type of condenser control CIRC ON OFF STATUS PRESSURE manufacturer INT 37 RW Regulation type PRESSURE TEMPERATURE Condensation Number of condensers installed 1 m
118. rature measured by driver 3 99 9 to 99 9 C ANA 74 R Cond temp Condensing temperature measured by driver 3 99 9 to 99 9 C ANA 78 R Driver 4 Display type of gas used in the refrigerant circui See Driver 8 RW Evap press Evaporation pressure measured by driver 4 99 9 to 99 9 barg ANA 67 R Evap temp Evaporation temperature measured by driver 4 99 9 to 99 9 G ANA 75 R Cond temp Condensing temperature measured by driver 4 99 9 to 99 9 C ANA 79 R EVD1 version Firmware version H driver 1 0 to 999 EVD1 version Firmware version L driver 1 0 to 999 EVD2 version Firmware version H driver 2 0 to 999 EVD2 version Firmware version L driver 2 0 to 999 EVD3 version Firmware version H driver 3 0 to 999 4 030220431 rel 1 1 10 10 06 32 UCI m m E Unit of Default Ana l Supervisor R Menu description Extended description Min max limits Erne Access nt Dig address RW EVD3 version Firmware version L driver 3 0 to 999 EVD4 version Firmware version H driver 4 0 to 999 EVD4 version Firmware version L driver 4 0 to 999 Antifreeze Antifreeze alarm set point chiller units 99 9 to 99 9 C 3 0 user ANA 13 RW Low room temperature ow room temperature air air units alarm Setpoint Antifreeze Antifreeze alarm differential chiller uni
119. rds on the main board so as to avoid causing irreparable damage to the boards Consequently it is recommended to first secure the connection cables to the optional boards using the plug in terminals and then insert the boards in the corresponding slots and finally secure the connection cables using cable clamps 3 030220431 rel 1 1 10 10 06 44 uc3 DRIVER ADRESSING IN pLAN NETWORK The addressing of the EVD400 driver units that can be connected to the pLAN network must be set as following ADDRESS 2 gt Circuit 1 Chiller Driver or Circuit 1 Bidirectional Driver ADDRESS 3 gt Circuit 1 Heat Pump Driver ADDRESS 4 gt Circuit 2 Chiller Driver or Circuit 2 Bidirectional Driver ADDRESS 5 gt Circuit 2 Heat Pump Driver The driver should be configured using the serial addressing tool EVD4 UI Address that can be downloaded from CAREL website http ksa carel com For further details on the use of the Driver and its configuration please refer to the manual code 030220225 pdf EVD4 User manual 6 Description of the main functions 6 1 Control set point Inputs used e Outside air temperature B7 e External set point B8 e Select cooling heating from digital input B25 Parameters used e Active operating mode chiller heat pump main Cooling set point r4 Heating set point rb Enable analogue probe 8 External set point HA Minimum set point value from probe B8 cooling r6 Maximum set point value from probe B8
120. re Condenser fan overload Ventilatore Fan Sonda condensatore Condenser probe B7 8 T Compressore 1 Circ 2 Compressor 1 Termico compressore 1 Compressor 1 overload Alta pressione 1 Bassa pressione 1 Alta pressione 2 Bassa pressione 2 High pressure 1 Low pressure 1 High pressure 2 Low pressure 2 Termico compressore 2 Compressor 2 overload re Compressore2 Circ 1 Compressor 2 Compressor 2 Fig 3 b b 3 24 Reverse cycle air cooled condensing unit single circuit 030220431 rel 1 1 10 10 06 Termico ventilatore condensatore Condenser fan overload Ventilatore Fan Sonda condensatore Condenser probe Valvola inversione Reversing valve Compressore 1 cjr 4 Compressor 1 Alta pressione Bassa pressione High pressure Low pressure Termico comp Comp overload Compressore2 ci Compressor 2 Fig 3 b c 20 Compressore 2 Circ 2 uc3 3 25 Reverse cycle air cooled condensing unit two circuits with condenser fan circuit Termico ventilatore condensatore Condenser fan overload B3 4 Ventilatore Fan B7 8 Sonda condensatore Sonda condensatore Condenser probe Condenser probe Valvola inversione Valvola inversione Reversing valve Reversing valve Compressore 1 cire 1 Compressor 1 Compressore1 Circ 2 Compressor 1 Alta pressione 1 Bassa pressione1 Alta pressione 2 Bassa pressione 2 High pressure 1 Low pressure 1 High pressure 2 Low pressure
121. rer DIG 11 RW B1 P evapor 1 Evaporation pressure 1 B1 T in cond Condenser inlet temperature water water units ED e probe Enable analogue input B2 BZ Not used Condensing temperature 2 B2 T condens 2 1 Y N manufacturer DIG 12 RW 3 Evaporation pressure 2 B2 P evapor 2 Condenser outlet temperature water water units B2 T out cond enan e probe Enable analogue inpu B3 IY N manufacturer DIG 3 RW B3 P condens 1 Condensing pressure 1 Enable probe Enable analogue input B4 B4 so Condensing pressure 2 nr N mante DIS i RW L A Enable analogue input B5 B5 T in evap Room temperature air air units Y Y manufacturer DIG 5 RW BS Not used Evaporator water inlet temperature chiller units E Enable ana ogue input B6 Evaporator air outlet temperature Y Y manufacturer DIG 6 RW By LOU Wate Evaporator water outlet temperature B6 Not used Enable probe Enable analogue input B7 B7 Eternal temp Outside air temperature IN N manufacturer DIG x hW Enable probe Enable analogue input B8 B8 External set External set point Y N manufacturer DIG 8 RW B8 Ext contr External control unit condensing units 3 030220431 rel 1 1 10 10 06 27 UCI
122. ressor 1 circuit 1 Winding A compressor 1 circuit 1 02 Compressor 2 circuit 1 Winding B compressor 1 circuit 1 Part load compressor 1 circuit 1 03 Liquid solenoid circuit 1 Compressor 3 circuit 1 Part load compressor 1 circuit 1 condenser fan 2 circuit 1 04 Condenser fan 1 circuit 1 05 Pump 06 Compressor 1 circuit 2 Winding A compressor 1 circuit 2 07 Compressor 2 circuit 2 Winding B compressor 1 circuit 2 Compressor 1 capacity control circuit 2 08 Liquid solenoid circuit 2 Compressor 3 circuit 2 Compressor 1 capacity control circuit 2Condenser fan 2 circuit 2 Pump 2 09 Condenser fan 1 circuit 2 Condenser fan 2 circuit 1 010 General alarm 011 Antifreeze heater circuit 1 012 Antifreeze heater circuit 2 Support heater in heating operation 013 4 way valve circuit 1 014 4 way valve circuit 2 ANALOGUE OUTPUTS Y1 0 to 10 V condenser fan inverter circuit 1 Y2 0 to 10 V condenser fan inverter circuit 2 Y3 PWM condenser fan inverter circuit 1 Y4 PWM condenser fan inverter circuit 2 Y5 Pump 2 Y6 Important uC3 If using a single condenser with 2 fans configured and 3 compressors configured in the event of step control the dedicated outputs will be number 4 and number 9 030220431 rel 1 1 10 10 06 65 8 3 Water water units 8 3 1 Cooling only DIGITAL INPU
123. robes the maximum total current is 50 mA e for applications subject to strong vibrations 1 5 mm pk pk 10 55 Hz secure the cables connected to the uchiller3 using clamps placed around 3 cm from the connectors 3 030220431 rel 1 1 10 10 06 or operation in domestic environments shielded cables must be used one wire shield for the tLAN connections EN 55014 1 e f a single power transformer is used for the uchiller3 and the options to avoid damaging the controller all the GO pins on the various controllers or the boards must be connected to the same terminal on the secondary and all the G pins to the other terminal on the secondary resetting the polarity of G and GO for all the terminals the system made up of the control board and the other optional boards represents a control device to be incorporated into class or class II appliances 76 NOTES A R Agenzia Agency Technology amp Evolution CAREL S p A Via dell Industria 11 35020 Brugine Padova Italy Tel 39 049 9716611 Fax 39 049 9716600 http www carel com e mail carel carel com cod 030220431 rel 1 1 10 10 06
124. rt heaters are managed by setting an activation delay time calculated from when the circulating pump starts so as to give the unit time to reach steady operation Enabling the control set point compensation function will also cause the compensation of the heater set point according to the same temperature difference calculated Boiler function If the reading of analogue input B1 is enabled and configured as the boiler temperature the operation of the heaters can be managed based on the outside temperature conditions and the water temperature in the storage cylinder Once having set a control set point and differential for both readings the support heaters will be activated based on the control temperature measured inlet or outlet according to the specific setting in reference to specific set points and differentials only if the outside temperature conditions and boiler conditions allow 3 030220431 rel 1 1 10 10 06 56 7 11 Selecting the Inputs used uC3 operating mode e Select cooling heating from digital input B25 Parameters used e Configure type of unit H e Cooling Heating from panel main e Enable cooling heating selection from digital input H2 e Enable cooling heating selection from supervisor H4 e Select cooling heating from supervisor e Logic of the 4 way reversing valve H e Force devices OFF for automatic reversal of the refrigerant circuit H Outputs used e 4 way valve for reversing the refriger
125. s alarms P1 Evaporator flow switch alarm delay at start up 0 to 999 S 15 user P2 Evaporator flow switch alarm delay in steady operation 0 to 999 S 3 user P3 Condenser flow switch alarm delay at start up 0 to 999 S 15 User P4 Condenser flow switch alarm delay in steady operation 0 to 999 S 3 User r parameters control r1 Active set point C direct r2 Current outside temperature compensation value B7 C direct 13 Current set point from analogue input B8 C r4 Cooling set point 99 9 to 99 9 C 12 0 direct 15 Heating set point 99 9 to 99 9 C 45 0 direct r6 inimum set point value from probe B8 cooling 99 9 to 99 9 C 7 0 direct 7 aximum set point value from probe B8 cooling 99 9 to 99 9 C 17 0 direct 18 inimum set point value from probe B8 heating 99 9 to 99 9 C 40 0 direct r9 aximum set point value from probe B8 heating 99 9 to 99 9 SG 50 0 r10 emperature control band 0 to 99 9 C 3 0 user r11 Enable set point compensation N Y N user r12 aximum compensation value 99 9 to 99 9 C 5 0 user 113 inimum outside temperature for compensation in cooling 99 9 to 99 9 C 25 0 user r14 aximum outside temperature for compensation in cooling 99 9 to 99 9 C 35 0 user r5 inimum outside temperature for compensation in heating 99 9 to 99 9 C 10 0 user r16 aximum outside temperature for compensation in heating 99 9 to 99 9 C 0 0 user r17 Outside temperature set point limit 99 9 to 99 9 C 10 0 user r18 Outside temperature different
126. s of multiple devices C1REQ Compressor 1 request CIREQ C2REQ Compressor 2 request T CMP1 Compressor 1 status CMP2 Compressor 2 status CMPST Minimum time between starts of different compressors C2REQ i t Time t s CMP1 gt s om a i I t s CMPST Fig 7 h 030220431 rel 1 1 10 10 06 53 Minimum time between starts of the same compressor This defines the minimum guaranteed time between two successive starts of the same compressor Even if called to start the compressor will not be able to switch on before this times elapses Setting this parameter suitably can limit the number of starts hour according to the specific instructions of the manufacturer of the compressor CREQ CMP Compressor request Compressor status CREQ CST Minimum time between starts of the same compressor t Time CMP 7 si t s Fig 7 i EST 7 7 Pumpdown management Inputs used e Low pressure switch circuit 1 B15 e Low pressure switch circuit 2 B20 e Evaporation pressure 1 B1 e Evaporation pressure 2 B2 e ON OFF from digital input air air units and chillers B13 Parameters used e Type of semi hermetic compressors controlled c e Maximum pumpdown duration c e Select end pumpdown mode c e End pumpdown pressure from probe c e Unit ON OFF from panel main e Unit ON OFF from supervisor Outputs used e Liquid solenoid circuit 1 B31 e Liquid solenoid circuit 2 B36 e Winding A compressor 1 B29 e Winding B compress
127. satore Condenser 1 Condensatore 2 Condenser 2 Resistenza antigelo 1 Antifreeze heater 1 Evaporatore Evaporator Compressore 1 Circ Compressore 1 Circ 2 Compressor 17 Compressor 17 d M Alta pressione 1 Bassa pres 1 Bassa di 2 Alta pressione 2 High pressure 1 Low pressure Low pressure 2 High pressure 2 Termicocomp 1 Termico comp 2 Comp 1 overload EN 2 overload Jona ingresso evaporatore Inlet evaporator probe lA dell acqua Water pump Compressore2 Circ 1 Compressore Le 2 Compressor 2 Compressor 2 Pompa dell acqua A Water pump c Fig 3 a p 3 030220431 rel 1 1 10 10 06 15 Sonda uscita evaporatore Outlet evaporator probe Resistenza antigelo Antifreeze heater Sonda ingresso evaporatore Inlet evaporator probe Pompa dell acqua Water pump c3 c3 3 15 WATER WATER chillers two circuits 2 evaporators Flussostato Flow switch Sonda temp di mandata Outlet temp probe B5 B3 Sonda uscita evaporatore 1 B6 B7 a Y fetter re IE um r A Sonda uscita evaporatore 2 AN i Ha d 1 B2 Outlet evaporator probe 2 Waer cond i Condensatore 1 Condensatore 2 P p Condenser 1 Resistenza antigelo 1 Condenser 2 Evaporatore Antifreeze heater 1 Evaporatore 2 Evaporator Resistenza antigelo 2 Evaporator 2 Antifreeze heater 2 Compressore 1 _Circ 1 Compressore 1 Circ 2 Compressor 1 Compressor 1 Sonda ingresso evaporatore T E O L Inlet evaporator probe Q UY T B1 Alta
128. ser probe Condenser probe Evaporatore 1 Evaporator 1 Compressore 1 Circi Compressor 7 Supply fan overload Supply fan Bassa pressione 1 Low pressure 1 A Alta pressione 1 High pressure 1 Termico compressore 1 Compressor overload 1 Sonda ambiente Ambient probe Compressore 2 Circ 1 Compressor2 Compressor 3 circ 4 Compressor3 Fig 3 a b 030220431 rel 1 1 10 10 06 9 Resistenze di riscaldamento 1 e 2 Antifreeze heaters 1 and 2 Termico ventilatore di mandata Ventilatore di mandata Evaporatore 2 Evaporator 2 T Compressore 1 Cic Compressor 1 Bassa pressione 2 Alta pressione 2 Low pressure 2 High pressure 2 Termico compressore 2 Compressor overload 2 LS Compressore 2 Circ Compressor2 7 Le Compressor 3 Ciro 2 Compressor 3 uC3 uc3 3 3 AIR AIR units two circuits 1 condenser fan circuit Sonda condensatore 1 Termico ventilatore condensatore Sonda condensatore 2 Condenser 1 probe Condenser fan overload Condenser 2 probe B3 4 St Ventilatore Fan Sonda mandata Supply probe B2 Resistenze di riscaldamento 1 e 2 Antifreeze heaters 1 and 2 T Evaporatore 1 Evaporatore 2 T Evaporator 1 Evaporator 2 Compressore 1 cic 7 Compressore 1 Circ 2 Compressor 17 Compressor 17 Alta pressione 1 Bassa pressione 1 SUR mancata Bassa pressione 2 Alta pressione 2 High pressure 1 Low pressure 1 Y Low pressure 2 High pres
129. shold for maximum sliding defrost action 99 9 to 99 9 C 0 0 user External temperature End anual defrost Enable manual defrost operation DISABLED DISABLED user ENABLED Circuit 1 Request forced defrost in circuit 1 OFF OFF user STAR Circuit 2 Request forced defrost in circuit 2 OFF OFF user STAR Transducer high High pressure alarm set point from transducer 0 to 99 9 bar 21 0 manufacturer ANA 24 RW pressure alarm Se tpoint Transducer high High pressure alarm differential from transducer 0 to 99 9 bar 2 0 manufacturer ANA 25 RW pressure alarm Diff Low pressure alarm Low pressure alarm set point from transducer cooling 0 to 99 9 bar 2 0 manufacturer Summer set Low pressure alarm Low pressure alarm set point from transducer heating 0 to 99 9 bar 0 5 manufacturer Winter set Low pressure alarm Low pressure alarm set point from transducer defrost 0 to 99 9 bar 0 manufacturer Defrost set LP delay switch on Low pressure alarm delay when starting the compressors cooling 0 to 999 S 40 user INT 20 RW Summer LP delay switch on Low pressure alarm delay when starting the compressors heating 0 to 999 S 40 user INT 21 RW Winter LP delay switch on Low pressure delay when starting the compressors defrost 0 to 999 S 40 User INT 22 RW Defrost Low pressure Low pressure alarm delay in steady operation 0 to 999 S 0 0 User INT 23 RW alarm Regime delay Low pressure Low pressure alarm differential from transducer 0 to 99 9 bar 2 0 user alarm Dif
130. sure 2 Termico comp 1 Termico comp 2 Comp 1 overload Comp 2 load abd Sonda ambiente ARC Ambient probe BI Compressore 2 Circ 1 Compressore 2 py Compressor 27 Compressor 2 Circ 2 Fig 3 a c 3 4 AIR AIR heat pumps single circuit Termico ventilatore condensatore Condenser fan overload i Sonda mandata Ventilatore Fan Supply probe Sonda condensatore B2 Condenser probe B3 4 Valvola inversione Reversing valve Compressore 1 Circ 1 Compressor 1 gt Alta pressione Bassa pressione High pressure Low pressure Termico comp Comp overload Compressore 2 Circ 1 Compressor2 Fig 3 a d 3 030220431 rel 1 1 10 10 06 10 Resistenze di riscaldamento Antifreeze heaters Evaporatore Evaporator Termico ventilatore di mandata Supply fan overload Ventilatore di mandata Supply fan Ambient probe Sonda ambiente B1 uc3 3 5 AIR AIR heat pumps two circuits Termico ventilatore condensatore 1 Termico ventilatore condensatore 2 Condenser fan overload 1 Condenser fan overload 2 Ventilatore Fan Ventilatore Fan Sonda condensatore Sonda condensatore Condenser probe Condenser probe Sonda mandata Supply D B2 Resistenze di riscaldamento 1 e 2 Antifreeze heaters 1 and 2 Evaporatore1 Evaporatore 2 Evaporator E 2 Valvola inversione 1 Valvola inversione 2 Reversing valve 1 Reversing valve 2 Termico ventilatore di mandata Supply fan overload Compressore 1 ci 4 Vent
131. the control differential to 0 6 2 Inlet room temperature control Inputs used e Room temperature air air units B5 Evaporator water inlet temperature Parameters used e Active operating mode chiller heat pump main e Configure type of unit H e Total number of compressors number of refrigerant circuits on unit H e Enable compressor capacity control c e Type of temperature control r e Active set point n e Temperature control band r10 e Proportional or proportional integral Inlet control r e Integral time for proportional integral control r Outputs used e Liquid solenoid circuit 1 B31 e Liquid solenoid circuit 2 B36 e Compressor 1 circuit 1 Winding A compressor 1 B29 e Compressor 2 circuit 1 Compressor 1 capacity control Winding B compressor 1 B30 e Compressor 3 circuit 1 Compressor 1 capacity control if Part Winding enabled B31 e Compressor 1 circuit 2 Winding A compressor 2 B34 e Compressor 2 circuit 2 Compressor 2 capacity control B35 Winding B compressor 2 e Compressor 3 circuit 2 Compressor 2 capacity control if Part Winding enabled B36 3 030220431 rel 1 1 10 10 06 46 uc3 7 Description of operation Temperature control proportional to the reading of the evaporator inlet probe k RBM gt 1 S2 S3 S4 j STPM EIWT Pc Fig 7 a STPM Control set point RBM Control band EIWT Evaporator water inlet temperature 1 4 Control steps The tempera
132. tivation of steps Minimum time delay for activation for steps Device stop zone Maximum time delay for deactivation of steps Minimum time delay for deactivation for steps B31 B36 B29 B30 B31 B34 B35 B36 uc3 EOWT C Temperature control is based on the temperature measured by probe B6 on units with one or two evaporators in the latter the water temperature of mixture is used A temperature dead band is identified based on the set point and band Temperature values between the set point and set point band STPM lt Temperature lt STPM RBM will not switch any compressors On Off Temperature values above set point band Temperature gt STPM RBM will activate the compressors Temperature values below the set point Temperature lt STPM will deactivate the compressors The compressor start stop procedures are controlled by variable delay times With a differential set for calculating the delay time the activation deactivation of the devices is modulated according to the temperature measured Setting to 0 the minimum delay times upon an increase and or decrease in the demand disables the corresponding calculation functions A temperature threshold is envisaged for both cooling operation and heating operation below above which the devices installed will in any case be stopped in order to avoid excessive cooling heating output produced by the unit 3 030220431 rel 1 1 10 10 06 48 7 2 Differential Te
133. tore Condenser probe B3 4 Flussostato Flow switch Sonda uscita evaporatore Outlet evaporator probe B2 Evaporatore Evaporator Resistenza antigelo Antifreeze heater Sonda ingresso evaporatore Inlet evaporator probe B1 Compressore 1 Qj 1 Compressor 1 Pompa dell acqua Water pump Alta pressione Bassa pressione High pressure Low pressure Termico comp Comp overload Compressore 2 Circ 1 Compressor 2 7 Fig 3 a g 3 8 AIR AIR chillers two circuits 2 condenser fan circuits and 2 evaporators Termico ventilatore condensatore 1 Termico ventilatore condensatore 2 Condenser fan overload 1 Condenser fan overload 2 Flussostato __ Flow switch Ventilatore 1 Fan 1 Ventilatore 2 Fan 2 Outlet temp probe Condenser 2 probe BS gt 5718 Sonda uscita evaporatore 1 Outlet evaporator probe 1 Sonda condensatore1 Sonda temp di mandata Sonda condensatore 2 Condenser 1 probe B2 Sonda uscita evaporatore 2 Outlet evaporator probe 2 Evaporatore 1 Resistenza antigelo 1 Evaporatore 2 Evaporator 1 Antifreeze heater 1 Evaporator 2 Resistenza antigelo 2 Antifreeze heater 2 Compressore 1 Circ 1 Compressore 1 _Circ 2 Compressor 1 Sonda ingresso evaporatore Compressor 1 Inlet evaporator probe B1 Pompa dell acqua Alta pressione 1 Bassa pressione 1 Water pump Bassa pressione 2 Alta pressione 2 High pressure 1 Low pressure 1 Low pressure 2 High pressure 2 Termico comp 1 Termic
134. tric heater is activated immersed in the main air flow controlled based on a set point and differential The activation of the support heater in cooling causes the total shutdown of the compressors or in any case disables the cooling devices until the temperature returns above the heater set point differential SUPPORT HEATERS IN HEATING Heating support function on water air water water units In units operating in heating mode with reversal on the refrigerant circuit electric heaters used in cooling mode as evaporator antifreeze heaters are used to support the heating function if the operation of the unit cannot satisfy the thermal load of the installation These heaters are controlled based on the unit temperature control probe inlet or outlet according to the setting made while two separate set points and differentials are set for the activation of the devices In the event of control based on the temperature measured at the evaporator outlet in units with one and two evaporators the heaters will be controlled based on the values measured by analogue input B6 Heating support function on air air units In units operating in heating mode with reversal on the refrigerant circuit electric heaters are used to support the heating function if the operation of the unit cannot satisfy the thermal load of the installation The user can set whether the heater is activated based on the room temperature or the outlet temperature The suppo
135. ts 99 9 to 99 9 SG 1 0 user ANA 14 RW Low room temperature Low room temperature air air units alarm Diff Antifreeze alrm inimum set point limit antifreeze low room temperature 99 9 to 99 9 C 0 0 manufacturer 5 Low room temperature setpoint limits Low Antifreeze alrm laximum set point limit antifreeze low room temperature 99 9 to 99 9 C 12 0 manufacturer Low room temperature setpoint limits High Antifreeze alarm Type of antifreeze alarm reset MANUAL MANUAL user Reset AUTOMATIC Antifreeze alarm Antifreeze alarm delay when starting manual reset 0 to 540 min 0 user g RW Delay Antifreeze Antifreeze heater set point 99 9 to 99 9 5 0 user ANA 5 RW heaters Setpont Antifreeze Antifreeze heater differential 99 9 to 99 9 1 0 user ANA 6 RW heaters Diff Auxiliary heater Support heater set point in cooling mode 99 9 to 99 9 30 0 user ANA 7 RW in cooling mode Setpoint Auxiliary heater Heater differential support in cooling mode 99 9 to 99 9 1 0 user ANA 8 RW in cooling mode Diff Auxiliary heater Support heater 1 set point in heating mode 15 0 to 50 0 25 0 user ANA 9 RW in heating mode Setpoint Auxiliary heater Support heater 1 differential in heating mode 0 0 to 10 0 5 0 user ANA 20 RW in heating mode Diff Auxiliary heater Support heater 2 set point in heating mode 15 0 to 50 0 24 0 user ANA 21 RW in heating mode 2 Setpoint Auxiliary heater Support heater 2 differential in heating mode 0 0 to 10 0 5 0 user ANA 22 RW in heating mod
136. ture control depends on the values measured by the temperature probe located at the evaporator inlet air water water water units or by the room probe air air units and follows proportional logic Depending on the total number of compressors configured and the number of load steps per compressor the control band set will be divided into a number of steps of the same amplitude When the various thresholds are exceeded a compressor or load step will be activated The following relationships are applied to determine of the activation thresholds Total number of control steps Number of compressors Number of compressors Number load steps compressor Proportional step amplitude Proportional control band Total number of control steps Step activation threshold Control set point Proportional step amplitude Progressive step 1 2 3 EXAMPLE OF TEMPERATURE CONTROL ON CHILLER UNITS WITH 4 COMPRESSORS Semi hermetic compressors with proportional control i a RB M EIWT C STPM Fig 7 b STPM Control set point RBM Control band EIWT Evaporator water inlet temperature C1 4 Compressor steps 7 1 Outlet temperature control Inputs used e Evaporator water outlet temperature B6 Parameters used e Active operating mode chiller heat pump main e Configure type of unit H e Total number of compressors number of refrigerant circuits on unit H e Enable compressor capacity control c e Type
137. ual control driver 2 reading 0 to DIG 61 RW EEV Position Read position of valve 2 0 to 9999 T 98 R Power request Read capacity request for driver 2 0 to 100 96 T 02 R Driver3 mode Active operating mode circuit 2 COOLING T 06 R HEATING DEFROST EEV Mode Activate manual control driver 3 reading 0 to DIG 62 RW EEV Position Read position of valve 3 0 to 9999 T 99 R Power request Read capacity request for driver 3 0 to 100 T 03 R Driver4 mode Active operating mode circuit 2 COOLING T 06 R HEATING DEFROST EEV Mode Activate manual control driver 4 reading 0 to DIG 63 RW EEV Position Read position of valve 4 0 to 9999 T 00 R Power request Read capacity request for driver 4 0 to 100 T 04 R Driver 1 Type of gas used one T 81 RW R22 R134a R404a R407c R410a R507c R290 R600 R600a R717 R744 SuperHea SuperHeat measured by driver 1 999 9 to 999 9 C ANA 60 R Satured Temp Saturation temperature measured by driver 1 999 9 to 999 9 C ANA 64 R Suction Temp Suction temperature measured by driver 1 999 9 to 999 9 C ANA 68 R Driver 2 Display type of gas used in the refrigerant circui See Driver 8 RW SuperHea SuperHeat measured by driver 2 999 9 to 999 9 C ANA 6 R Satured Temp Saturation temperature measured by driver 2 999 9 to 999 9 C ANA 65 R Suction Temp Suction temperature measured by driver 2 999 9 to 999 9 C ANA 69 R Driver 3 Display type of gas used in the refrigerant circui See Driver 8 RW SuperHe
138. uperHeat from autosetup C manufacturer Auto HP Low SuperHeat C2 Settable low SuperHeat in heat pump mode circuit 2 4 0 to 21 0 C manufacturer DF Circuit EEV Ratio Percentage of EEV opening from autosetup manufacturer Auto DF Circuit EEV Ratio Settable percentage of EEV opening in defrost mode 0 to 100 manufacturer DF Proportional gain Proportional gain from autosetup manufacturer Auto DF Proportional gain Settable proportional gain in defrost mode 0 to 99 9 manufacturer DF Integral time ntegral time from autosetup in defrost mode E manufacturer Auto DF Integral time Settable integral time in defrost mode 0 to 999 S manufacturer DF SuperHeat set C1 SuperHeat set point from autosetup C manufacturer Auto DF SuperHeat set C1 Settable SuperHeat set point in defrost mode circuit 1 2 0 to 50 0 C manufacturer DF Low SuperHeat C1 Low SuperHeat from autosetup C manufacturer Auto DF Low SuperHeat C1 Settable low SuperHeat in defrost mode circuit 1 4 0 to 21 0 e manufacturer 030220431 rel 1 1 10 10 06 40 UCI m m Ww Unit of Default Ana l Supervisor R Menu description Extended description Min max limits measure Access nt Dig address RW DF SuperHeat set C2 SuperHeat set point from autosetup C manufacturer Auto
139. upply to the Lchiller controller or chiller controllers should be separated from the power supply to the other electrical devices contactors and other electromechanical components inside the electrical panel If the secondary of the transformer is earthed make sure that the earth wire is connected to terminal GO This is true for all the devices connected to the chiller IMPORTANT A fuse must be fitted in series with the power supply with the following characteristics 250 Vac 2 A slow blow 2 AT Direct current connection Warning for DC power supply follow the instructions as shown in the following figure DC power supply Power supply for VZC synchronism CP e UNE J1 J5 B B2 8 ps ps p1 EINEN CND Fig 5 a WARNINGS when programming the parameters with the key the controller must be disconnected form the power supply and any other devices the 24 Vdc available at the Vdc terminal can be used to supply an 4 to 20 mA active probe the maximum current is 100 mA The 5 Vdc available at the 5VR terminals can be used to supply to the 0 to 5 V active ratiometric probes the maximum total current is 50 mA e for applications subject to strong vibrations 1 5 mm pk pk 10 55 Hz secure the cables connected to the chiller using clamps placed around 3 cm from the connectors for operation in domestic environments shielded cables must be used one wire 4 shield for the tLAN connections EN 55014
140. urations together with the management of semi hermetic compressors with a single unloader valve 030220431 rel 1 1 10 10 06 70 9 ALARMS 9 1 Table of alarms The following table describes all the alarms managed by the unit indicating the type of devices disabled for each Code this is the alarm ID code which is shown cyclically on the PLD display Description this is the description of the type of alarm activated as shown in the alarm log on the PGDO display uc3 Type this indicates the source of the alarm DIN digital input AIN analogue input SYS system DRV electronic expansion valve driver Reset this indicates the type of reset featured for the alarm A automatic M manual S selectable Logi Pump Code Description Type Reset Delay Compressors Fan Fans Notes A001 Antifreeze alarm 1 D Jj X X X A002 Antifreeze alarm 2 A S X A003 Evaporator pump thermal overload D M x X x If alarm on all the pumps A004 Condenser pump thermal overload D M X X X A005 Evaporator flow switch alarm DI REN x X x If alarm on all the pumps A006 Condenser flow switch alarm D M S PIE X X X a due 19561005 teady operation alarm A007 Main fan thermal overload D M A
141. ure 2 condens 2 5 6 analog inputs Value of analogue input B5 Room temp Room temperature air air units 99 9 to 99 9 C ANA 47 R T in evap Evaporator water inlet temperature ot used 5 6 analog inputs Value of analogue input B6 T out air Air outlet temperature air air units 99 9 to 99 9 5 ANA 48 R T out evap Evaporator water outlet temperature Not used 7 8 analog inputs Valle of analogue pute 99 9 to 99 9 C ANA 49 R Outside air temperature Ext temp n Value of analogue input B8 E External set point 99 9 to 99 9 C ANA 50 R xternal set External control value condensing units Ext contr 9 10 analog inputs Value of analogue input B9 3 T out ev 1 Evaporator 1 water outlet temperature 99 910 999 h AND Tad i Not used 9 10 analog inputs Value of analogue input B10 99 9 to 99 9 eC ANA 52 R T out ev 2 Evaporator 2 water outlet temperature Moe Not used 1 3 dig inputs Status 0 digita input lus Seriais alarm Serious alarm from digi al input born n Remote On Off ON OFF Tom digital input condensing units with control from digital inputs 1 3 diginputs Status of digital input 2 Air flow state BEE Air flow switch air air units Evap flow state Evaporator water flow switch Control step 1 Condensing unit digital control 1 Not used 1 3 dig inputs Status of digital input 3 Remote On Off Remote On 0 Control step 2 Condensing unit digital control 2 4 6 dig inputs Status of digital input 4 Overload ma
142. ure temperature values between STPC and STPC OFFD cause the operation of the condenser fans at the minimum speed set o pressure temperature values below STPC OFFD cause the total shutdown of the fans and the analogue output signal is set to 0 Volt A fixed hysteresis of 0 5 bar or 1 0 C is featured to prevent swings in the controlled value around the threshold STPC OFFD from causing repeated starts and stops of the controlled devices In the activation phase with increasing pressure temperature as soon as the value exceeds the threshold STPC OFFD the fan is operated at maximum speed for a period equal to the set speed up time If condenser control is based on the condenser temperature reading when the liquid solenoid valve opens refrigerant circuit activated if the outside air temperature is above STPC OFFD the fan is operated at maximum speed for a period equal to the set speed up time This function aims to prevent high pressure in the refrigerant circuit when starting the compressors caused by an incorrect measurement of the condenser temperature due to the thermal inertia of the control probe 3 030220431 rel 1 1 10 10 06 60 uc3 Evaporator fan control in heat pump operation Speed 1 1 I 1 1 1 1 1 1 1 1 1 1 I 1 1 1 1 1 1 1 1 1 1 1 1 Ai 1 1 1 1 1 1 1 I 1 1 1 1 1 1 1 1 1 1 Fig 7 p Condenser control devices and alarms k RBC k oFD 3 EPT bar C STPE STPC Evaporat
143. uts used e Evaporator pump 1 B33 e Evaporator pump 2 B36 e Generic alarm B38 The circulating pump thermal overload alarm disables the operation of the device causing the unit to shutdown immediately so as to prevent dangerous operating conditions with the compressors on and no water flow If control of the second circulating pump is enabled as the thermal alarm will cause the rotation of the pump in operation the program will attempt to recover the situation by starting the reserve device Should there also be a thermal overload alarm on this device too the unit will shutdown immediately In general if in response to a thermal overload alarm a different pump cannot be started as support the unit is switched off 9 6 Condenser fan thermal overload alarm Inputs used e Condenser fan 1 thermal overload circuit 1 B19 e Condenser fan 2 thermal overload circuit 1 1 condenser B24 e Condenser fan 2 thermal overload circuit 1 2 condensers 4 fans B26 e Condenser fan 1 thermal overload circuit 2 2 condensers B24 e Condenser fan 2 thermal overload circuit 2 2 condensers 4 fans B27 Parameters used e Number of condensers installed F e Total number of fans installed F Outputs used e Fan 1 circuit 1 B32 e Fan 2 circuit 1 B31 e Fan 2 circuit 1 single condenser B37 e Fan 1 circuit 2 2 condensers B37 e Fan 2 circuit 2 B36 The purpose of an individual thermal overload alarm is to prevent the operation
144. ximum number 10 input time constant 1s internal resistance of 4 to 20 mA inputs 100 O 3 030220431 rel 1 1 10 10 06 75 uc3 Analogue outputs type and max no 4 x 0 to 10 Vdc outputs Y1 Y2 Y5 and Y6 2 PWM phase control outputs Y3 and Y4 with a 5 V impulse of programmable duration resolution 8 bit maximum load 1 kQ 10 mA for 0 to 10 V and 470 Q 10 mA for PWM Digital outputs maximum number 14 electromechanical relays N1 N2 N3 N4 GROUP A C1 2 C3 4 N5 Signal relay 1 C5 N6 N7 N8 N9 GROUP B C6 7 C8 9 N10 Signal relay 2 C10 N11 N12 N13 N14 GROUP C C11 12 C13 14 current limits max current 2A for each relay output extendable to 3A for a single output Some outputs are grouped in twos with two common terminals so as to ensure easy assembly of the common pins Make sure that the current common terminals does not exceed the rated current of each individual terminal that is 6 A for the Mini fit terminals Type of relay 1250 VA 250Vac 5 A resistive EN approval EN60730 3 A resistive 2 A inductive 3 2 A 100 000 cycles UL approval UL 3 A resistive 1 A FLA 6 A LRA 250 Vac cosp 0 4 C300 30 000 cycles All the relays must have the common in the same group C1 2 C3 4 C6 7 C8 9 C11 12 C13 C14 connected together externally Power G GO Power supply to uchiller3
145. y proportional to the difference between the minimum and maximum limits The parameters for setting the operating limits are different for cooling and heating operation without any restrictions regarding the setting of the limits for calculating the compensation offset 6 1 1 Minimum outside temperature limit Inputs used e Outside air temperature B7 Parameters used e Enable analogue probe 7 Outside air temperature HA e Outside temperature set point limit r17 e Outside temperature differential limit r18 Outputs used e Compressor 1 circuit 1 B29 Winding A compressor 1 e Compressor 2 circuit 1 B30 Winding B compressor 1 e Compressor 3 circuit 1 B31 e Compressor 1 circuit 2 Winding A compressor 2 B34 e Compressor 2 circuit 2 Winding B compressor 2 B35 e Compressor 3 circuit 2 B36 If the probe for measuring the outside air temperature is enabled a temperature threshold is activated below which the compressors are forced off Temperature control only starts again when the outside air temperature is above the set point a differential On units in chiller operation this is done to prevent the operation of the unit in ambient conditions that would cause an excessively low condensing pressure On units in heat pump operation this is done to prevent the operation of the unit in ambient conditions that would cause the rapid formation of frost on the outdoor exchanger To disable the function simply set the value of

User manual

Contents

Download Pdf Manuals

Related Search

Related Contents