Page 1 Controller manual Service 10-06-2024 Series: Kappa Rev Series Kappa Rev LGW Series Kappa Evo Series Omega Rev LC Omega Sky LC...
Page 2 Page intentionally blank Translation from original instructions We reserve the right to make changes without any prior notice.
Page 3 2.4.3 Operating mode 2 2.4.4 Operating mode 3 2.4.5 Operating mode 4 2.4.6 References on user interface Swegon Inside Thermoregulation 2.6.1 Proportional inlet control 2.6.2 Outlet control with neutral zone and PID Limitation of refrigeration capacity 2.7.1 Limitation of refrigeration capacity from pressure probe 2.7.2...
Page 4 2.8.5 Activation of the compressors between the circuits 2.8.6 Balance sequence criteria 2.8.7 Saturation sequence criteria (only for stepless compressors) 2.8.8 Management of compressors with inverter Ventilation 2.9.1 Ventilation in common or separate 2.9.2 Ventilation management with speed adjuster 2.9.3 Floating condensation control 2.9.4 Night Shift System...
Page 5 2.20.3 3-way valve management 2.20.4 Stopping of compressors 2.20.5 Free cooling with No Glycol 2.20.6 Free cooling alarms 2.21 Defrost 2.21.1 Simultaneous or separate defrost 2.21.2 Check of conditions for the defrost cycle at fixed evaporating temperature 2.21.3 Check of conditions for the defrost cycle at sliding evaporating temperature 2.21.4 Type of defrost 2.21.5...
Page 6 2.30.2 Limitation of absorbed current using “Energy meter” 2.30.3 Limitation of absorbed current using “Energy meter” 2.31 Electronic expansion valve 2.31.1 Superheating management 2.31.2 Control in high superheating conditions 2.31.3 Control in low superheating conditions 2.31.4 Control in MOP conditions 2.31.5 Control in LOP conditions Alarms...
Page 7 3.5.4 Inverter blocked alarm 3.5.5 Alarm for compressor operation outside envelope 3.5.6 Inverter offline alarm Probe error alarms 3.6.1 Temperature probes 3.6.2 Pressure probes System alarms 3.7.1 Alarms in Multilogic and Multifree systems 3.7.2 Alarms in systems with Smart Link+ function Configuration alarms Frequently Asked Questions Switching the unit on and off...
Page 8 Where to find the controller “MAC address” 4.11 Swegon Inside 4.11.1 The unit can be connected to Swegon INSIDE. 4.11.2 How to access the Swegon INSIDE screens in the unit 4.11.3 How to enable/disable Swegon INSIDE 4.11.4 How to view the certificate expiry date 4.11.5 Validity of ID certificate for connection to Swegon INSIDE 4.11.6...
Page 9 INTRODUCTION 1.1 General Some information on the use of this manual. 1.1.1 Purpose of the manual The purpose of this manual is to provide all information regarding the software functions of the controller for the units listed on the cover and it is complementary to the controller installation and programming manual. This manual is the “SERVICE”...
Page 10 Some products will come with a valid certificate out of the factory, while other products need to be equipped with a certificate to authorize the product to share data. To find out if the product is INSIDE Ready (i.e. ready to share data) or not visit INSIDE Ready | www.swegon.com. 1.2.4.5 Safety The Swegon INSIDE product is connected to azure IoT Hub.
Page 11 1.2.4.6 Firewall settings for Swegon Cloud Swegon cloud solution is using Microsoft Azure services and certificates from DigiCert to secure the connection. If the firewall in front of the products is allowing outbound traffic to internet it will work. If the firewall is set up to control outbound traffic the following ports and destinations must be allowed.
Page 12 1.3 "Service" branch In the “Service” branch, which is password-protected, access is gained to loops of screens are accessed for programming and managing the controller and the various functions present in the unit. Login using personal credentials is necessary to browse password-protected menus. After login, it is possible to gain ac- cess to a protected menu for the following thirty minutes without having to enter the password again.
Page 13 1.3.1 Programming the Parameters After selecting icon and on confirming with button ENTER you will access a set of branches of screens for setting the parameters that regard the functions of the unit. With buttons you can scroll the individual branches, with buttons you can go to the next or previous screen of the same branch.
Page 14 1.3.2 Compressors After selecting icon and on confirming with button ENTER you will access the screens that allow you to activate and deactivate the individual compressors and reset the number of hours of operation and the number of starts. In each screen, with buttons you can go to the next or previous screen of the same loop.
Page 15 1.3.5 "Control panel" After selecting icon and on confirming with button ENTER you will access the "Control panel" screen in which there are controls for managing the programming files and the settings of the serial communication of the controller. The functions of this branch are described in the "Control panel" chapter regarding installation of the software. 1.3.6 Status of inputs and outputs After selecting icon...
Page 16 1.3.6.3 "Digital outputs" In this set of screens, you can see the status of the digital outputs. The first screen shows the outputs of the Master board. With buttons you will access the screens where the digital outputs of the expansion boards are shown. For each output, there may be: - "ON", if the output is closed;...
Page 17 SOFTWARE FUNCTIONS For management of the units, special software is loaded into the controller. The software consists of a combination of functions dedicated to the conditions in which the units may have to work. The following chapters describe all the functions managed by the software, from common functions present in all units to functions dedicated to specific operations.
Page 18 2.2 Set point management The control set point mainly depends on parameters ST1 and ST4. The relevant settable minimum and maximum setpoint parameters are shown below. Parameter Min. Max. Description °C Chiller - Setpoint °C Chiller - Minimum Setpoint °C Chiller - Maximum Setpoint °C Heat Pump - Setpoint...
Page 19 2.2.2 Dynamic set point from external air probe To obtain the set point change from external air probe, it is necessary to have parameter SD1=1. In chiller operating mode, the parameters involved are shown in the table. Parameter Value Description °C Chiller - Setpoint Dynamic Setpoint type...
Page 20 With reference to the values set in the table, this corresponds to the graphical representation of the set point change as regards the air temperature value shown in the figure. Fig. 3 Change in set point as the air temperature changes in heat pump operating mode Where "Ta"...
Page 21 2.2.3 Dynamic set point from signal The type of signal used is 4-20mA, 0-1V, 0-10V and 0-20mA. To obtain the set point change from signal, it is necessary to have parameter SD1=2/3/4/5 respectively for the 4 types of signal. In chiller operating mode, the parameters involved are shown in the table. Parameter Value Description...
Page 22 In heat pump operating mode, the parameters involved are indicated in the table. Parameter Value Description °C Heat Pump - Setpoint Dynamic Setpoint type SD23 °C Dinamic Setpoint probe - Max increase/decrease setpoint in heat pump mode Fig. 5 Change in set point as the analogue signal changes in heat pump operating mode Where "V/mA"...
Page 23 2.3 Energy Trend The function “Energy trend” is featured on units as an option. This function estimates the unit operational efficiency (“EER” when operating in cooling mode or “COP” when operating in heating mode) as the current operating conditions and the set parameters change. If you wish to access the data estimated by the function, go to the main menu and select the function “ENERGY TREND”...
Page 24 2.3.5 Logs The measured operating values are not only viewed on the display, but they are also recorded in the controller memory over time. The values are recorded in the “logs”. “EnergyTrendHours” is used to record the values concerning the energy absorbed and generated on an hourly basis, and the number of minutes the unit has been in operation every hour.
Page 25 File "EnergyTrendHistory.txt" Reference Description DATE Date type yyyymmdd EN_IN_CH Energy absorbed on a daily basis in chiller mode [kWh] EN_OUT_CH Energy generated on a daily basis in chiller mode [kWh] EER_AVG Average daily EER EN_IN_HP Energy absorbed on a daily basis in heat pump mode [kWh] EN_OUT_HP Energy generated on a daily basis in heat pump mode...
Page 26 2.4 Smart Grid ready The two digital inputs provided help override thermoregulation to operation in hot mode. This function does not trigger when thermoregulation is operating in cold mode. Units are always provided with this function although it is not enabled. When the function is enabled, the status of the two featured digital inputs combined activates the 4 operating modes listed in the table.
Page 27 If the “ACS” function is featured, this operating mode stops it. If a seasonal mode change occurs during operation in heating mode or where the “ACS” function is enabled in cooling mode, the unit performs thermoregulation in cooling mode. 2.4.3 Operating mode 2 Activation of this operating mode requires that both digital input “1”...
Page 28 2.4.6 References on user interface The function can be managed using the parameters described above or using the user interface. When “setpoint” is selected in the main screen, a click on the “Smart Grid ready” icon and entry of the relevant password give access to a screen where the two setpoint values and the maximum overriding time of hot mode shutdown are enabled and set up.
Page 29 The certificate requires that the connection is activated within two years from its issue. A connection between a fixed unit IP and the Internet is required. If you wish to enable the “Swegon Inside” function on units that were manufactured before week 24 of 2023, the minimum requirements below must be checked: 1.
Page 30 2.6 Thermoregulation The thermoregulation of the unit depends on parameter ST9 that determines on which temperature probe the controller must guarantee maintenance of the temperature set as the set point, and on parameter ST11 that determines the type of control. With the combination of settings, it is possible to have: - ST9 = 0 and ST11 = 0 - proportional input registration;...
Page 31 Fig. 6 Graphical representation of steps in Chiller operating mode Example of proportional control in chiller mode. “Tin” indicates the water temperature at the inlet of the unit. In the case of Heat Pump, the following formula is used to calculate the number of resources to be activated: ST8/(CF7 + CF8 + CF9 + CF10) Fig.
Page 32 2.6.2 Outlet control with neutral zone and PID The reference probe is placed on the common outlet of the evaporator. The resources (compressors and capacity re- ductions) are activated/deactivated depending on a set point and a differential, complying with the reference delays. Parameter Min.
Page 33 Example of control with neutral zone in heat pump mode Fig. 9 Graphical representation of operation in heat pump mode and outlet control As long as the reference water temperature is less than (<) ST4 - ST31, the compressors of the unit will be activated com- plying with the delays included in parameters ST27 and ST26.
Page 34 2.7 Limitation of refrigeration capacity There are some operating conditions for which the refrigeration capacity of the unit can be limited automatically or neces- sarily. Limitation can be done in 4 different ways: - from pressure probe (always present) - from amperometric transformer (accessory) - from digital input (accessory);...
Page 35 2.7.1 Limitation of refrigeration capacity from pressure probe In some operating situations of the unit (too high condensing pressures or too low evaporating pressures) it may be useful to limit the capacity of the compressor. The parameters involved in limitation of refrigeration capacity with reference to condensing pressure are shown in the table.
Page 36 Deactivation of capacity reduction in the circuit takes place when the following conditions are verified: - in chiller operating mode, when the evaporating pressure is higher than UN9 + UN10; - in heat pump operating mode, when the evaporating pressure is higher than UN11 + UN12; Cooling capacity limitation in units with stepless compressors takes place with management of the “UP”...
Page 37 2.7.2 Limitation of refrigeration capacity from amperometric transducer Limitation of refrigeration capacity can be carried out through an amperometric transducer that measures the current drawn by the unit. The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description...
Page 38 2.7.3 Limitation of refrigeration capacity from digital input Limitation of refrigeration capacity can be carried out from digital input. The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description...
Page 39 2.8 Circuits and compressors To meet the thermoregulation request from the system, the controller activates and deactivates the compressors of the circuits present in the unit as required. The management of individual compressors, and also of the combination of compressors, takes place according to the setting of the relevant parameters.
Page 40 The management of several compressors also takes place complying with delay times. The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description Minimum ON time Minimum OFF time 10 s Minimum time between 2 activations of the same compressor...
Page 41 2.8.2 Capacity management of stepless compressors Cooling capacity modulation takes place with capacity reduction, if not with speed modulation by inverter. For all compressors having cooling capacity modulation with capacity reduction, the starting and stopping procedures are the same. For compressors where capacity reduction is stepped, the capacity of the compressors can also have the capacity re- duction step of 75% in addition to 100%.
Page 42 Parameter Value Description Number of pulses required to consider compressor 1 100% charged Number of pulses required to consider compressor 2 100% charged 0.1 sec Pulse duration (ON) Frequency of UP pulses in neutral zone ST22 With ZN or PID, Chiller - Maximum activation time ST23 With NZ or PID, Chiller - Min.
Page 43 2.8.4 Capacity management on starting and stopping Management by the control is different from that described in the previous chapter when the reference water temperature is not within the activation and deactivation differentials and the neutral zone. During starting, to ensure that system operation reaches nominal conditions more quickly, if the reference water tempera- ture does fall within the activation differential within the delay time set in parameter "SL10", the duration of the pulses for increasing the capacity changes from "SL6"...
Page 44 2.8.5 Activation of the compressors between the circuits In addition to controlling the switching on of the compressors, the controller manages their activation as regards the circuits present in the unit. The application developed for the controller includes various management criteria. According to unit type and system requirements, the most suitable one can be selected.
Page 45 2.8.8 Management of compressors with inverter When a compressor is started up, the controller keeps the inverter at the start-up value for as long as the “start-up time” setpoint in parameter “CO20”. After the “start-up time” has elapsed, the inverter regulation reaches the required thermoregulation with a step-by-step se- quence.
Page 46 2.9 Ventilation Unit ventilation is controlled in continuous mode with modulation of a 0-10V signal. For each circuit, there is a digital output for activation of ventilation and an analogue output with modulating circuit for control of a speed adjuster. Ventilation of the unit is controlled by the FA parameters.
Page 47 2.9.1 Ventilation in common or separate Ventilation is managed according to the configuration of the unit. The parameter involved is shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Description Single or separate ventilation Depending on parameter FA4, ventilation management is:...
Page 48 2.9.2 Ventilation management with speed adjuster With speed adjuster, ventilation is managed in continuous mode. For each refrigerant circuit, there is a digital output for activation of ventilation and an analogue output with modulating cir- cuit for control of a speed adjuster. The parameters involved in the chiller operating mode are shown in the table.
Page 49 The parameters involved in the heat pump operating mode are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description Ventilation operating mode Ventilation Speed Up at start Chiller - Pre-ventilation time before compressor start-up FA14 Heat pump - Minimum speed...
Page 50 2.9.3 Floating condensation control This function is used for the dynamic recalculation of the ventilation control ramp as the outside air temperature varies. The function “Floating condensation control” is only available in cooling mode. This function is featured in software versions starting from 1.105.90. The table below shows the operating parameters involved.
Page 51 The controller calculates the coefficients with reference to parameters “FA42” and “FA43”. Each coefficient is calculated by interpolation of a pair of parameters: - coefficient “x” is calculated by interpolation of parameters “FA8” and “FA44”; - coefficient “y” is calculated by interpolation of parameters “FA9” and “FA45”; - coefficient “t”...
Page 52 2.9.4 Night Shift System Through the setting of daily time bands, the additional "Night Shift System" function allows the unit to be operated in high efficiency mode or in low noise mode as required. The function can be activated only for condensing control and with proportional ventilation control. The values of the parameters are representative.
Page 53 2.9.5 Night Shift System with floating condensation control The controller offers the possibility to enable these two functions at the same time. Unit operation is the result of the two functions summed. The function with relevant parameters is shown graphically below. FA30 FA31 T.cond °C...
Page 54 2.9.6 Fan stop prevention function This function is intended to prevent a fan stop as a result of forming ice. The function gets activated when the air temperature value is below the activation threshold. The parameters involved are shown in the table. The values of the parameters are representative.
Page 55 2.9.7 Ventilation alarms The alarms regarding this function are shown in the table. Alarm code AL35..AL40 The digital input is ignored for the delay set in parameter PAL80 AL35; with digital input of circuit 1 open AL36; with digital input of circuit 2 open Reason for activation AL37;...
Page 56 2.10 User-side pumps Management of the pumps in the unit takes place based on the number of pumps configured. The application manages the pumps through the setting of the PA parameters. The parameters involved are shown in the table. Parameter Description Users - Pump management 10 s...
Page 57 2.10.1 Management of unit without pumps or with one pump The parameters involved in activating the unit with one pump are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description...
Page 58 2.10.2 Management of 2 pumps In the version with 2 pumps, these are always with one on standby while the other is working. The switching between pumps (to balance the hours of operation of each one), can be manual or automatic. In any case, switching takes place in case of breakdown.
Page 59 Fig. 28 Graphical representation of the alarms of the pumps The graph shows: 1. the unit running with thermoregulation request (Tr.req = on) and pump 1 active (P1 = on); 2. operation of the thermal overload protection of pump 1 (Th1 = on) with activation of the relevant alarm (AL45 = on), deactivation of pump 1 (P1 = off) and activation of pump 2 (P2 = on);...
Page 60 2.10.3 Pump switching after compressor switch-off Special conditions apply by which automatic rotation between pumps must take place with a delay between the stop of one pump and the start of the other. In these cases, the pumps must be rotated when the compressors are off. As soon as the number of operating hours is achieved, the controller waits for thermoregulation to be met or for the unit to be “OFF”, before rotating the pumps.
Page 61 2.10.4 Management of the pumps in antifreeze function With the controller, there is the possibility of using system water circulation to prevent freezing of the heat exchanger during periods when the machine is stopped. So that water circulation can impede freezing of the exchanger, the unit must be electrically powered and circulation must not be prevented by the status of valves and taps.
Page 62 2.10.5 Pulse Function The “Pulse” function allows the pump to be switched on and switched off based on some set times when the request for starting up the compressors from thermoregulation is not present. This function combines activation of the pump of the unit with the thermoregulation request. The parameters involved are shown in the table.
Page 63 2.10.6 Pump alarms The alarms that regard the pumps are shown below. Pump maintenance Alarm code AL143 maintenance of pump 1; AL144 maintenance of pump 2 Reason for activation This is detected when the work hours exceed the value of parameter PA18 Reset On deletion of the hours in the Service menu Alarm icon...
Page 64 2.11 User-side pump The controller can control a water circulation valve. The water circulation valve is controlled by the controller in connection with the user-side pump. The control process consists in the following: - pump start-up is delayed so that the valve can open fully; - valve closing is delayed after pump switch-off.
Page 65 2.12 Heat recovery pumps Management of the heat recovery pumps of the unit takes place based on the number of pumps configured. The heat recovery pumps are managed by the controller through the setting of the PA parameters. The parameters involved are shown in the table.
Page 66 Thermal overload protection in recovery pumps/desuperheater AL243 Thermal overload protection of pump 1; AL244 Thermal overload Alarm code protection of pump 2 Reset With digital input closed Reset mode Always manual Alarm icon Flashing AlarmLog Devices Behaviour in the event of an alarm Pump Operation of the pump in alarm is prevented Recovery...
Page 67 2.13 Liquid injection valve To activate this function, the PTC discharge probe must be configured for each circuit present in the unit. All the parameters involved with this function are shown in the table. Parameter Value Description Control of discharge temperature - Activation Setpoint of the liquid injection solenoid CO51 °C valve...
Page 68 2.14 Oil return The oil return function consists of the increase in cooling capacity of the circuit when it remains at reduced capacity for a long time. The increase in cooling capacity causes an increase in the speed of the refrigerant in the exchangers and facilitates oil return to the compressor.
Page 69 2.15 Heat recovery Parameter Description DC - Forced unloading time before entering in recovery DC - Forced unloading time after entering in recovery DC/DS - Minimun On time DC - Minimum waiting time between two recoveries / DS - Waiting time before VDO enabling 99.9 DC - High pressure threshold to exit from recovery...
Page 70 2.15.2 Recovery management In addition to activation, the controller manages heat recovery and checks the suction and delivery pressures, and with delays. The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description...
Page 71 2.15.3 Recovery alarms The alarms that regard recovery are shown below. Alarm code AL207.. AL210 circuit 1 .. 4 recovery disabled Reason for activation This is detected if the delivery pressure exceeds threshold RC7 Reset When the delivery pressure is lower than value RC7 - RC8 for time RC9 Reset mode Manual Alarm icon...
Page 72 2.16 Desuperheater The function of the desuperheater is to recover a portion of the heat generated by the superheated gas at the compressor exhaust and to use it to heat water. For correct refrigerant circuit operation, the superheated gas must not, however, be cooled to such extent that it conden- sates.
Page 73 2.16.2 Desuperheater management When the water reference temperature exceeds the setpoint value stored in parameter “RC13”, the controller stops the OK signal that enables desuperheater operation. The signal is output again when the water reference temperature is smaller than the value resulting by subtracting the setpoint in “RC13” and the “RC14” differential value. When the reference value of the water temperature is lower than the condensing temperature (“t cond”) plus the differential value “RC22”...
Page 74 2.17 Antifreeze control in recovery system/desuperheater During operation of the units, or while they are in stand-by conditions and the ambient temperature is below zero, the water inside the exchangers can freeze. Ice formation inside the exchangers can irreparably damage them. The controller runs dedicated processes to prevent the formation of ice in the heat exchangers.
Page 75 2.17.2 Management of the pumps in antifreeze function The controller features an option by which water is circulated to prevent freezing of the heat exchanger provided that the conditions to enable the antifreeze function are in place (parameter “AR14” = 3). So that water circulation can impede freezing of the exchanger, the unit must be electrically powered and circulation must not be prevented by the status of valves and taps.
Page 76 2.18 Pump down This function causes the refrigerant circuit to stop following the closing of the expansion valve and the reaching of the suction pressure at the switch-off threshold in pump down. The parameters involved are shown in the table. Parameter Description Enables pump down function...
Page 77 2.18.2 Pump down alarms The alarms regarding pump down are shown below. Alarm code AL122.. AL125 pump down alarm for circuits 1 .. 4 Reason for activation When PD1 is different from "0" and the switching off of a refrigerant circuit is required Reset Automatic, and becomes manual after PD7 occurrences/hour Reset mode...
Page 78 2.19 Refrigerant leak detection management This function manages refrigerant leaks. Leaks are controlled through a refrigerant detector whose sensor is installed in the compressor compartment of the unit. On the controller, for each refrigerant circuit of the unit, there are digital inputs to which the refrigerant detectors are con- nected.
Page 79 2.19.3 Refrigerant leak alarms The refrigerant leak alarms are shown below. Alarm code AL156.. AL159 refrigerant leak alarm of circuits 1 .. 4 Reason for activation When PD1 = "5" and digital input of the controller regarding the refrigerant detector is open Reset Automatic, and becomes manual after PD7 occurrences/hour Reset mode...
Page 80 2.20 Free Cooling Free cooling is the function that allows air temperature to be used to cool the user water. Depending on the set parameters, the controller can manage this function in various ways. In any case, when conditions are suitable, the controller activates the free cooling resources before the compressors and deactivates them after deactivating the compressors.
Page 81 2.20.1 Free cooling with air/water coil When conditions are suitable, the user water goes through an air/water coil before going through the evaporator. The diversion is normally made through a 3-way valve. With the flow through the air/water coil, the need to activate the compressors is reduced up to the complete stopping of them.
Page 82 A graphical representation is shown below. Fig. 40 Temperature conditions for enabling the free cooling function In addition to the parameters present in the table, the other abbreviations in the graph indicate: - FC ON = free cooling active - FC OFF = free cooling not active - Tin_fc - Tair = difference in temperature between the water returning from the system and the ambient air.
Page 83 2.20.2 Thermoregulation with the free cooling function When the function is active, the controller uses the free cooling resources for water cooling before activating the compres- sors. According to the settings, the controller can manage the resources with reference to the water temperature at the inlet or outlet of the unit.
Page 84 In the case of control at outlet, when the water temperature is above the neutral zone, the controller activates the ventilation first, whereas when it is below the neutral zone, it deactivates the ventilation last. The parameters involved in the management of the function are shown in the table. The values of the parameters are representative.
Page 85 2.20.3 3-way valve management When conditions are suitable for free cooling, the 3-way valve diverts the flow of water to make it go through the free cooling coil before the evaporator. The 3-way valve can be an on-off or modulating valve. To prevent the water temperature at the outlet of the unit from reaching values that are too low, the controller manages the 3-way valve and modulates its opening up to complete closing.
Page 86 2.20.4 Stopping of compressors In free cooling units, the use of compressors to meet the thermoregulation request is limited by the air temperature. The use of the compressors to meet the thermoregulation demand is limited by the air temperature. Generally, when the air temperature value is low, the thermoregulation request is met by the free cooling function. During starting of the system, particular conditions can occur for which activation of the compressors may be temporarily required.
Page 87 2.20.5 Free cooling with No Glycol In systems where user-side water cooling is exploited through an air/water exchanger, an adequate percentage of glycol must be present to prevent freezing. "No Glycol" free cooling allows free cooling to be exploited without having to put glycol in the water of the entire system. Thermal exchange between the hydraulic circuit of the system of use and that of the free cooling circuit takes place by me- ans of a water/water decoupling exchanger.
Page 88 The parameters involved in the management of the function are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description Freecooling type °C Differential close 3way valve freecooling / NG pump off Enables no-glycol free cooling °C Temperature differential to activate freecooling from water end outdoor temp...
Page 89 2.20.6 Free cooling alarms The free cooling function alarms are shown below. Alarm code AL050 free cooling pump circuit breaker alarm Reason for activation With opening of the relevant digital input Reset Manual Reset mode Only after closing of the digital input Alarm icon Flashing AlarmLog...
Page 90 2.21 Defrost Defrosting is a procedure in which frost accumulation on the condensing/evaporating coil is prevented and/or any frost that has formed is removed during operation in heat pump mode of an air/water unit. An effective defrost cycle ends with a completely clean condensing/evaporating coil. The controller manages defrosting differently according to the settings made and the air temperature conditions.
Page 91 The stages of a defrost cycle are as follows: - check of defrost start conditions (at fixed or sliding evaporating pressure); - check of type of defrost to carry out (with air or with refrigeration cycle reversal); - preparation for cycle reversal; - refrigeration cycle reversal and defrost of the condensing/evaporating coil;...
Page 92 The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description Defrost method dF10 -12.0 °C Fixed evaporating threshold to start defrost dF11 Defrost start delay dF17 Delay to defrost after the unit is switched on dF18...
Page 93 2.21.4 Type of defrost After verifying that there are conditions requiring a defrost, the controller selects the most efficient type of defrost as regards the operating conditions of the unit. The choice of the type of defrost depends on the ambient air temperature. If the ambient air temperature is higher than the value set in parameter dF34, the controller starts an air defrost otherwise it starts the procedure for a defrost with refrigeration cycle reversal.
Page 94 2.21.7 Refrigeration cycle reversal and defrost With reversal of the refrigeration cycle and the stopping of ventilation, defrosting of the coil starts. The parameters involved are shown in the table. Parameter Value Description dF45 1 - Yes Ventilation during defrost dF46 43.0 °C...
Page 95 2.21.8 Preparation and new cycle reversal Whatever way a defrost with refrigeration cycle reversal is ended (due to reaching the end-of-defrost threshold or due to reaching the time limit), the next stage is preparation for a new reversal of the refrigeration cycle and then resumption of operation in heating mode.
Page 96 2.21.10 Defrost alarms If, within the defrost time limit, the condensing temperature has not reached the end-of-defrost threshold, the controller ends the defrost in progress in any case. In the alarm pages, the controller records and displays the defrost cycles that end when the time limit is reached without stopping any compressors.
Page 97 2.22 Anti Ice Circuit In order to prevent ice from forming at the base of the air exchanger working as an evaporator, the last supply is used for the operation of the Anti-Ice Circuit. The controller manages this part of the exchanger through a digital outlet that powers a solenoid valve. The solenoid valve is powered when the air exchanger works as an evaporator and during defrosting if the temperature of the air is lower than the activation threshold, but it is always powered when the exchanger works as a condenser When conditions are suitable for activation, the function can be activated with a pause-work cycle depending on parameters...
Page 98 2.23 Anti-freeze heaters During operation of the units, or while they are in stand-by conditions and the ambient temperature is below zero, the water inside the exchangers can freeze. Ice formation inside the exchangers can irreparably damage them. To prevent ice formation inside the exchangers, the controller can manage auxiliary heaters. The parameters involved are shown in the table.
Page 99 2.23.2 Reference probe Depending on the unit, there can be one or more reference probes for activation of the heater output. The number of probes present is linked to the type of unit and to the number of water exchangers. For air/water units, the cases can be the following: - in the case of one exchanger, the reference probe is the one installed on the water outlet;...
Page 100 2.24 Heater in condensate drip tray This function is intended to prevent freezing of the water that forms in the condensate drip tray during the defrost cycles. The function gets activated when the air temperature value is below the activation threshold. The parameters involved are shown in the table.
Page 101 2.25 Fast Restart To protect the integrity of the compressors, the controller manages the maximum number of starts per hour by means of the delay between two consecutive starts. The Fast Restart function allows a quick restart of the unit in case of a blackout. The quick restart after a blackout depends on the thermoregulation request.
Page 102 2.25.1 Fast Restart with UPS Activation of the Fast Restart function with the presence of an UPS, which keeps the controller electrically powered, allows maximum reduction of the delay in restarting the compressors of the unit. This is possible because the controller starts the count of the minimum OFF time when the switch-off occurs due to blackout. The controller detects problems with the main power supply through a digital input and manages them as alarms.
Page 103 2.25.3 Thermoregulation with Fast Restart With the Fast Restart function enabled, the controller uses some dedicated parameters to respond quickly to a blackout if a thermoregulation demand is present and the reference water temperature is outside the “activation offset”. The Fast Restart thermoregulation parameters replace the parameters used in normal operating conditions. The parameters involved are shown in the table.
Page 104 2.25.4 Fast Restart alarms Some alarms and warnings are linked to this function: - The alarms are linked to power supply problems of the unit. This is the case where there is an UPS that keeps the controller powered. When normal conditions are restored, the alarm resets automatically for a limited number of times in one hour and over the span of a day.
Page 105 2.26 Auxiliary heating This function allows management of a heating device to supplement operation in heat pump mode or as an alternative to it. The controller can manage up to 4 digital outputs to obtain 4 steps and a 0/10 V analogue output. Activation of this function is possible only for units that can operate in heat pump mode.
Page 106 As regards air temperature, with the setting of parameter AH5, it is possible to decide on deactivation of the operation of the compressors after delay AH7. The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description...
Page 107 Parameter Value Description Type of temperature control °C Heating ON/OFF - Main probe setpoint on hot side ST8 or AH10 °C Heating ON/OFF - Proportional band ST10 AH11 °C Heating 0-10V - Main probe setpoint on hot side ST8 or AH12 °C Heating 0-10V - Proportional band...
Page 108 Fig. 50 Digital and analogue output of auxiliary heating with off-set In addition to the references present in the table, T ref = reference water temperature. 2.26.4 Auxiliary heating with independent set point This control function is used to activate auxiliary heating with its own set points and differentials; in this way, its management is not linked to the set point of the compressors in operation in heat pump mode.
Page 109 2.27 Flowzer The “Flowzer” function is designed to define the speed setpoints for the pump fitted in the unit that help meet the demand received from different system types. Specific logics have been developed according to which the controller manages the hydraulic systems connected to the unit.
Page 110 The arrow buttons are tapped to select the “Flowzer” function, after which the “ENTER” button must be pressed to confirm the selection. Below are some screens associated to one of the “Flowzer” functions: they show the operating status with the main para- meters.
Page 111 2.27.1 General All functions have some parameters in common which are used to control the pump fitted in the unit. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description FMG1 50.0 Common - Min.
Page 112 2.27.3 “DT” function The “DT” function is designed to change the pump speed in order to have a constant temperature difference between the unit inlet and outlet. The resulting effect is that the temperature of water supplied to the system is constant. When the load is reduced, the water flow rate is reduced accordingly, which results in consumption saving.
Page 113 If the function is not designed to manage other features than temperature difference control on the heat exchanger side fitted in the unit, the hydraulic diagram of the installation is approximately as follows. Vmin. Fig. 55 Pump in unit used for water circulation in the system If the function is designed for flow rate control on the heat exchanger side fitted in the unit, the hydraulic diagram of the installation is approximately as follows.
Page 114 If the function requires management of a bypass valve to control the pressure difference on the heat exchanger side, the hydraulic diagram of the installation is approximately as follows. A040 BP41 ΔPex Vmin. Fig. 57 Pump in unit used for water circulation in the system with bypass valve If the pressure difference on the heat exchanger side is lower than the value in parameter “PA22”, the controller opens the bypass valve at the percentage setpoint (pre-positioning) stored in parameter “FMG58”.
Page 115 2.27.4 “VDE” function The “VDE” function is designed to set the pump speed in order to have a constant pressure difference between the unit inlet and outlet. The speed of the pump is set automatically to preserve the desired flow through the heat exchanger in the unit. This function is useful when the head of the pump aboard the unit is greater than the system requires, which would result in a higher water flow circulating.
Page 116 2.27.5 “VD” function The “VD” function is designed to set the pump speed in order to have a constant pressure difference between the delivery and the return lines in the system. If the pressure difference at the ends of the system is kept constant, the pump speed is set automatically in order to have the desired flow as the load changes.
Page 117 2.27.6 “VFPP” function The “VFPP” function is designed to control variable flow systems to the primary circuit. As demand changes, the system keeps stable the difference in water pressure and temperature in the system delivery line. The water flow rate and temperature are independent variables and they are not directly connected. Pump control (only one pump in the system) provides for the necessary flow rate, while cooling capacity control ensures the correct temperature.
Page 118 If the pressure difference on the heat exchanger side in the unit during the process to keep the pressure difference in the sy- stem constant is lower than the value in parameter “PA22”, the controller opens the bypass valve at the percentage setpoint (pre-positioning) stored in parameter “FMG58”.
Page 119 2.27.7 “VPS” function The “VPS” function is designed for flow rate modulation to the primary circuit following that of the secondary circuit, having as reference the water temperature difference measured between the outlet of the primary circuit and the bypass pipe. The water flow rate in the primary circuit is always set up within the limits set for correct operation of the refrigerant unit.
Page 120 The hydraulic diagram below shows a system featuring this function. BP41 BTWB ΔPex Vmin. Fig. 61 System diagram with “VPS” control Translation from original instructions We reserve the right to make changes without any prior notice.
Page 121 2.28 SMART Link The "SMART Link" function prepares the refrigerant units for serial connection with "GOLD" ventilated units. Through the serial connection, the "GOLD" unit intervenes in the water temperature value of the refrigerant unit to optimize system operation and reduce energy consumption. This function is available for both chiller units and heat pump units.
Page 122 2.28.2 Serial connection Serial connection between the refrigerant unit and the "GOLD" unit is to be carried out by the installer and must be done on the serial port RS485 of the controller at terminals 97, 98 and 99, respectively corresponding to (-), (+) and (GND). 97 (-) 98 (+) 99 (GND)
Page 123 2.29 SMARTLink + The “SMARTLink+” function is designed to set up the refrigerant units for connection to as many as ten ventilating units of any version whatsoever (“GOLD” units and chilled beam systems) using an Ethernet port. The Ethernet connection enables multiple ventilating units to be involved in the definition of the water temperature value of the refrigerant unit with a view to optimizing system operation and reducing energy consumption.
Page 124 Please find below a list of values set in the “SML” parameters: - parameter “SML1” is used to set the number of ventilating units featured; - the hydraulic circuit to which each ventilating unit is connected is set in parameter SML2: 0 = None; 1 = Circuit A; 2 = Circuit B - the type of user connected is set from parameter “SML13”...
Page 125 Move in the various fields using the arrow buttons and press “ENTER” to confirm after entering the necessary parameters, according to the system in which the refrigerant unit is fitted. As soon as the number of ventilating units is set up, the value entry fields are enabled. The value to be entered in the field “IP address”...
Page 126 When the refrigerant unit is set up for operation in heating mode, it only switches to cooling mode if the air temperature value is higher than threshold “SML26”, plus the relevant differential (“SML27”). When the refrigerant unit is set up for operation in cooling mode, it only switches to heating mode if the air temperature value is lower than threshold “SML26”, minus the relevant differential (“SML28”).
Page 127 2.30 Energy meter The option “Energy meter” is designed to control the main electrical parameters of the unit. This measuring instrument is installed in the electrical cabinet of the unit and it is configured at the factory. It communicates with the controller serially. 2.30.1 Viewing of measured parameters Specific screens are provided to show the measured parameters.
Page 128 2.30.2 Limitation of absorbed current using “Energy meter” For units featuring stepless compressors The option “Energy meter” may be integrated with an additional option that is designed to limit the electric current absorbed by the unit. The controller uses as reference the greatest value of absorbed current on the three phases. The current is limited by overriding cooling capacity reduction.
Page 129 2.30.3 Limitation of absorbed current using “Energy meter” For units with inverter compressors or for hybrid units The option “Energy meter” may be integrated with an additional option that is designed to limit the electric current absorbed by the unit. The controller uses as reference the greatest value of absorbed current on the three phases.
Page 130 2.31 Electronic expansion valve The use of the electronic expansion valve allows very precise, stable and reliable control of refrigerant flow with consequent increase in efficiency. The controller manages the electronic expansion valve and controls its opening based on the performance required by the system in all working conditions, to ensure low superheating over time that optimizes the performance of the unit and increases the benefits of floating condensation.
Page 131 2.31.1 Superheating management The main parameter controlled by the electronic expansion valve is the superheating value of the gas at the outlet of the evaporator. The PID control algorithm allows the superheating value, at the various operating conditions, to be kept close to the value of the set setpoint.
Page 132 2.31.3 Control in low superheating conditions Prolonged continuation of the condition in which the superheating value is lower than the threshold set by the manufacturer will cause damage to the compressors. When this condition occurs, the controller changes the opening of the expansion valve. The relevant parameters are shown in the table.
Page 133 2.31.5 Control in LOP conditions The LOP (Low Operating Pressure) threshold set by the manufacturer is the suction pressure value below which the low pressure alarm intervenes with stopping of the refrigerant circuit. When this condition occurs, the controller stops the PID superheating control and, with suitable algorithm, opens the expan- sion valve.
Page 134 ALARMS 3.1 Introduction The active alarms generated by the application software can activate a relay, if suitably configured. The relay is switched on if: - there is an active alarm; - there is an alarm that has not been reset; The display is supplied with a buzzer.
Page 135 3.2 Unit alarms The unit alarms immediately cause all the compressors and relevant additional functions to be switched off. 3.2.1 Flow switch alarm Management of the flow switch alarm depends on whether or not pumps are present in the unit. If it is the controller that manages the pumps of the unit, the parameters involved are shown in the table below.
Page 136 In addition to the parameters present in the table, the other abbreviations in the graph indicate: - U/P = relating to the "unit" or "pump" device - On = state of the device - Off = state of the device - ID = digital input to which the flow switch is connected - O = open - C = closed...
Page 137 3.2.2 Antifreeze alarms The antifreeze alarms depend on the number of exchangers present in the unit. The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description PAL36...
Page 138 With the value of parameter PAL47 set to 6, the antifreeze alarm is managed with the probe installed on the water leaving the evaporator. Alarm code AL217 \ AL417 The temperature measured by the antifreeze probe is lower than the value set in parameter Reason for activation PAL36 When the temperature measured by the antifreeze probe is higher than the value set in...
Page 139 3.2.3 Low incoming water temperature alarm The alarm is active only in heat pump operating mode. The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description PAL84...
Page 140 3.2.5 Low ambient temperature alarm The alarm is detected only in heat pump operating mode. The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description PAL116 Enables the low outside air temperature alarm in heat pump mode...
Page 141 3.2.6 Wrong phase sequence alarm The alarm is detected only for the time set in parameter CO7 when the controller is started. The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description...
Page 142 3.2.8 Alarms for expansion modules not connected If communication between the controller and the expansion module fails, the outputs of the expansion module are deacti- vated after 5 seconds. Alarm code AL164 Reason for activation Non-communication between the controller and expansion module IPX306 Reset If the module is disabled or resumes communication Reset mode...
Page 143 3.2.11 “RTC” clock alarm Alarm code AL211 Reason for activation Low level of controller battery charge Reset When the controller time or date is reset. Reset mode Automatic Alarm icon Flashing AlarmLog Alarm relay Devices Behaviour in the event of an alarm All devices They follow their control Replace the controller if the alarm is not cleared after setting the time.
Page 144 3.3 Function alarms Alarms linked to the functions managed by the controller are described below. 3.3.1 Pump alarms The alarms that regard the pumps are shown below. Pump maintenance AL143 / AL443 maintenance of pump 1; AL144 / AL444 maintenance of pump Alarm code Reason for activation This is detected when the work hours exceed the set limit...
Page 145 3.3.2 Ventilation alarms The alarms regarding this function are shown in the table. Alarm code AL35, AL36, AL37, AL38, AL39, AL40 AL35; with digital input of circuit 1 open AL36; with digital input of circuit 2 open AL37; with digital input of circuit 3 open Reason for activation AL38;...
Page 146 3.3.3 Recovery alarms The alarms that regard recovery are shown below. Alarm code AL207, AL208, AL209, AL210 circuit 1, 2, 3, 4 recovery disabled Reason for activation This is detected if the delivery pressure exceeds the set limit Reset When the delivery pressure is lower than value RC7 - RC8 for time RC9 Reset mode Manual Alarm icon...
Page 147 3.3.5 Refrigerant leak alarms The refrigerant leak alarms are shown below. If the refrigerant leak causes hazardous conditions, the electro-mechanical management procedure is illustrated in the “In- struction Manual for Installation, Use and Maintenance”. Alarm code AL156, AL157, AL158, AL159 refrigerant leak alarm of circuits 1, 2, 3, 4 Reason for activation When the digital input of the controller regarding the refrigerant detector is open Reset...
Page 148 3.3.7 Free cooling alarms The free cooling function alarms are shown below. AL50: overload alarm in free cooling pump 1; AL56: overload alarm in free Alarm code cooling pump 2. Reason for activation With opening of the relevant digital input Reset Manual Reset mode...
Page 149 3.3.8 Defrost alarms The defrost alarms are shown below. Alarm code AL186, AL187, AL188, AL189, AL190, AL191 defrost alarm Reason for activation If a defrost ends due to time limit instead of due to condensing temperature threshold Reset Automatic Reset mode At the next defrost ended with exceeding of the condensation threshold Alarm icon Flashing...
Page 150 3.3.9 Fast Restart alarms The alarms regarding this function are shown below. Alarm for power supply with UPS in 24 hours Alarm code AL192 Reason for activation With digital input open Reset With digital input closed Automatic with number of occurrences per hour smaller than or equal to PAL66 Reset mode Manual with number of occurrences per hour greater than PAL66 Alarm icon...
Page 151 3.3.10 Alarms relating to 2-zone function (GIT option) Below is a list of the alarms linked to the function that is used to control up to 2 zones of the system (GIT option). Probe error in secondary circuit AL333 Error: probe in secondary circuit 1 AL334 Error: probe in secondary Alarm code circuit 2 Reason for activation...
Page 152 3.4 Circuit alarms The circuit alarms occur only on the compressors of the circuit involved. 3.4.1 High-pressure alarms For each refrigerant circuit, the delivery pressure is controlled by safety pressure switches and by pressure sensors. The parameters involved are shown in the table. The values of the parameters are representative.
Page 153 Probe high pressure alarm Alarm code AL10 for circuit 1, AL11 for circuit 2, AL12 for circuit 3 and AL13 for circuit 4 Reason for activation With unit running, if the value measured by the pressure probe is >=PAL11 Reset When the value measured by the pressure probe is <= (PAL11 - PAL12) Reset mode Automatic, and becomes manual after PAL13 occurrences/hour...
Page 154 3.4.3 Alarm for low difference between high and low pressure Checking of the difference between high and low pressure values takes place when at least one compressor of the circuit involved is running. The parameters involved are shown in the table. The values of the parameters are representative.
Page 155 3.4.4 Probe low pressure alarm For each refrigerant circuit, the suction pressure is controlled by a pressure sensor. The controlled limits are different with the different operating modes. If the value of parameter PAL5 is set to "1", pressure control is also done during defrost. If the value of parameter PAL7 is set to "1", pressure control is also done with the unit switched off.
Page 156 3.4.5 Forcing of capacity reduction from low pressure probe This function is always present in units with the value of parameter UN3 on "1". The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description...
Page 157 3.4.6 Forcing of capacity reduction from high pressure probe This function is always present in units with the value of parameter UN3 on "1". The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description...
Page 158 3.4.7 Low superheating alarm The alarm refers to the refrigerant circuits and its occurrence causes the relevant compressors to stop. The parameters involved are shown in the table. The values of the parameters are representative. In specific cases, different values can be set. Parameter Value Description...
Page 159 3.5 Compressor alarms The alarms of a compressor are: - compressor overload protection - compressor oil level - inverter offline. - compressor maintenance; 3.5.1 Compressor Overload Protection Alarm AL18, AL19, AL20, AL21, AL22, AL23, AL24, AL25, AL26, AL27, AL28, AL29, Alarm code AL30, AL31, AL32, AL33 The alarm is detected after the compressor is switched on...
Page 160 3.5.4 Inverter blocked alarm AL309 General inverter alarm in compressor 1, AL310 General inverter alarm Alarm code in compressor 2 The alarm code is present in the "Trip Code" part of the inverter information screen Reason for activation This is detected through serial communication with the inverter Reset With elimination of the alarm on the inverter Automatic, with a number of occurrences per hour smaller than or equal to PAL23...
Page 161 3.5.6 Inverter offline alarm Alarm code AL166 for compressor 1, AL167 for compressor 2 Reason for activation Disconnection of the serial connection with the inverter of the relevant compressor Reset Restoration of the serial connection Reset mode Automatic Alarm icon Flashing AlarmLog Devices...
Page 162 3.6 Probe error alarms The temperatures and pressures that concern the management of the unit are measured through the analogue inputs of the controller. The software application manages the signals detected by the analogue inputs and checks that they fall within the set ope- rating range.
Page 163 User outlet water temperature probe error AL66 / AL266 for circuit 1, AL67 / AL267 for circuit 2, AL68 / AL268 for circuit Alarm code 3 and AL69 / AL269 for circuit 4 Reason for activation When the value measured by the analogue input is outside the set operating range Reset When the value measured by the analogue input falls within the set operating range Reset mode...
Page 164 System return water temperature probe error Alarm code AL81 Reason for activation When the value measured by the analogue input is outside the set operating range Reset When the value measured by the analogue input falls within the set operating range Reset mode Automatic Alarm icon...
Page 165 Suction temperature probe error AL102 for circuit 1, AL103 for circuit 2, AL104 for circuit 3 and AL105 for Alarm code circuit 4 Reason for activation When the value measured by the analogue input is outside the set operating range Reset When the value measured by the analogue input falls within the set operating range Reset mode...
Page 166 3.6.2 Pressure probes High pressure probe error Alarm code AL94 for circuit 1, AL95 for circuit 2, AL96 for circuit 3 and AL97 for circuit 4 Reason for activation When the value measured by the analogue input is outside the set operating range Reset When the value measured by the analogue input falls within the set operating range Reset mode...
Page 167 Pressure probe error in system delivery and return lines Alarm code AL323 system delivery line; AL324 system return line Reason for activation When the value measured by the analogue input is outside the set operating range Reset When the value measured by the analogue input falls within the set operating range Reset mode Automatic Alarm icon...
Page 168 Dynamic set point signal error Alarm code AL112 Reason for activation When the value measured by the analogue input is outside the set operating range Reset When the value measured by the analogue input falls within the set operating range Reset mode Automatic Alarm icon...
Page 169 3.7 System alarms The unit can be incorporated in a system where it is required to communicate with other controllers serially. Where communication problems occur, alarms are managed that vary according to the system type. 3.7.1 Alarms in Multilogic and Multifree systems The alarms linked to this function trigger whenever a problem is experienced with the Master setup parameters, the network communication, the status of the featured Slave units, and the additional probes connected to the Master.
Page 170 Configuration alarms ACF13 Multilogic network configuration alarm It is displayed in the Master when the priority level is not assigned correctly to the networ- Reason for activation ked units. Reset When the priority level is assigned correctly to the units of the network Reset mode Automatic Alarm icon...
Page 171 3.8 Configuration alarms The controller management software ensures that the configuration of the unit is consistent with that of the I/O and, in ge- neral, with the functions present. In the event of inconsistency, the controller reports the reason through codes. The codes managed with the descriptions of the causes generating them are shown in the table.
Page 172 4.1 Frequently Asked Questions The necessary instructions for working on the controller, with regard to the main functions of the unit, are given below. 4.2 Switching the unit on and off 4.2.1 Switch the unit on and off from the keypad In order to switch the unit on and off from the keypad, make sure the feature is active.
Page 173 4.3.3 Change of operating mode from heating to cooling and vice versa from the BMS The change of operating mode from the BMS is equivalent to the change from the keypad, and therefore it is an alternative to the change from digital input. In order to switch the unit on and off from the BMS, make sure the feature is active.
Page 174 4.4.7 Time band setup procedure A click on the “MENU” button in the main screen gives access to the “MENU” screen. Use the “arrow down” button to select “ENERGY SAVING” and press “ENTER” to confirm and thus access the menu with the function setup screens.
Page 175 4.5 Managing recovery 4.5.1 Activate and deactivate recovery from the keypad From the main screen, press button to move around in the recovery management screen. On pressing and holding down, for 2 seconds, button recovery will be deactivated. On pressing and holding down, for 2 seconds, button recovery will be activated.
Page 176 4.6 Management from BMS 4.6.1 RS485 serial connection The connection must be made through serial port “RS485 B” using terminals 97, 98 and 99, based on the indicated pola- rities. Terminal "99", marked with "gnd", should be used only if you are certain it is not earthed. The serial communication works even without its connection.
Page 177 4.6.4 Enable the change of operating mode from the BMS In heat pump units, for the change of operating mode from cooling to heating and vice versa from the BMS, besides setting parameter "SP6" to "1", as described in the previous point, it is necessary to also set parameter "SP9" to "0". Enabling of the change of operating mode from the BMS prevents the change of operating mode from digital input.
Page 178 4.7 Resetting of partial counters 4.7.1 Resetting the compressor hours of operation and starts The number of hours of operation of the compressors can be reset in the loop of screens dedicated to Service or in the Maintenance screens. For resetting in the Service branch, see the relevant "Compressors" chapter The "Maintenance"...
Page 179 4.7.3 Resetting of the number of hours of operation of the pumps The number of hours of operation of the pumps can be reset in the loop of screens dedicated to Service or in the Mainte- nance screens. For resetting in the Service branch, see the relevant "Pumps" chapter The "Maintenance"...
Page 180 4.8 Controller functions 4.8.1 Updating the time and date of the controller Since these updates require a reboot of the controller, the unit must be "OFF" in order to do them. From the main screen, press button MENU Pressing twice on the button select "CONFIG", confirm with button ENTER to enter the "Configuration"...
Page 181 4.9 Replacements 4.9.1 Replacing the electronic expansion valve driver To replace the driver, strictly follow the instructions given below. 1. Put the unit in the off state. 2. Turn off the power to the electrical control panel. 3. Disconnect and uninstall the old driver. 4.
Page 182 4.10 WEB pages The web server integrated in the controller is accessed through the Ethernet port. Access to these pages requires the user to know his/her IP address. The factory-set IP address is 10.2.3.20 The set IP address is in any case displayed in one of the controller screens. The steps to access the screen with the IP address are as follows: - go to the main screen and press the “menu”...
Page 183 4.11.1 The unit can be connected to Swegon INSIDE. All the units are supplied with an identification certificate “ID” which is required to connect them to Swegon INSIDE. The minimum conditions below must be checked for the connection of units manufactured before 2024 to Swegon INSIDE: - controller iPro, code MIDX125A or MIDX126A;...
Page 184 The ID certificate is valid for 2 years from the date of unit factory acceptance testing and it is renewed automatically if the connection to the Swegon INSIDE portal is made within the validity term. if the connection to the Swegon INSIDE portal is not made within the validity term of the ID certificate, the certificate expires. Translation from original instructions...
Page 185 4.11.6 What to do if the ID certificate has expired or is missing If you need a new ID certificate, you have to access the Swegon portal - ref. section “How to access the Swegon INSIDE portal” - and click the link to ask for a new certificate.
Page 186 “SUBMIT”. Select “Cooling & Heating” in the field “Select product”. Create your account and register at least one unit, after which access the “log in” screen in the Swegon INSIDE portal. Translation from original instructions We reserve the right to make changes without any prior notice.
Page 187 4.11.8 Information displayed in the Swegon INSIDE portal The “Products” menu in the Swegon INSIDE portal gives access to the associated units. The last registered operating status and active alarms, if any, are visible for units that have an active connection.
Page 188 Page intentionally blank Translation from original instructions We reserve the right to make changes without any prior notice.
Page 189 Page intentionally blank We reserve the right to make changes without any prior notice. Translation from original instructions...
Page 190 Via Valletta, 5 - 30010 Cantarana di Cona, (VE) Italy - T. +39 0426 921111 - F. +39 0426 302222 www.blueboxcooling.com - info@swegon.it Swegon Operations s.r.l. with sole shareholder - VAT no. 02481290282 Company directed and coordinated by Investment Latour (Sweden)

This manual is also suitable for:

Bluebox kappa rev lgw seriesBluebox kappa evo seriesBluebox omega rev lcBluebox omega sky lc

Swegon BlueBox Kappa Rev Series Manual

Quick Links

Need help?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Swegon BlueBox Kappa Rev Series

Summary of Contents for Swegon BlueBox Kappa Rev Series

This manual is also suitable for: