CLIVET WiSAN-YME 1 S 2.1 Manual For Installation, Use And Maintenance
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CLIVET WiSAN-YME 1 S 2.1 Manual For Installation, Use And Maintenance

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WiSAN-YME 1 S
2.1-14.1
M0PE00002-00 10-22

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Summary of Contents for CLIVET WiSAN-YME 1 S 2.1

  • Page 1 WiSAN-YME 1 S 2.1-14.1 M0PE00002-00 10-22...
  • Page 2 Dear Customer, Congratulations for choosing this product. For many years Clivet has been offering systems that provide maximum comfort, together with high reliability, efficiency, quality and safety. The target of the company is to offer advanced systems, that assure the best comfort, reduce energy consumption along with lowering the installation and maintenance costs for the entire lifecycle of the system.

  • Page 3: Warranty

    – The product must be used for the purpose intended by CLIVET for which it was expressly made. Any contractual and non-contractual liability of CLIVET for damage caused to persons, animals or property by...
  • Page 4 Index 1. Safety considerations Water volume, system pressure and expansion tank control Safety Filling / topping up with water Manual 7. Electrical connections Situations of Risk Intended use Precautions for electrical connections Installation General diagram Maintenance Control box Changes Location of connections Fault or malfunction Electrical connections User training...
  • Page 5 10. MODBUS registers 10.1 Controls 10.2 States 10.3 States of units in cascade 10.4 Alarms 10.5 Password-protected unit parameters 11. Serviceman warnings 11.1 Controls in the area 11.2 Work procedures 11.3 General work area 11.4 Checking the presence of refrigerant 11.5 Presence of fire extinguishers 11.6...

  • Page 6: Safety Considerations

    Safety considerations 1. Safety considerations Safety Operate in compliance with the safety regulations in force. To perform the operations use the following protective equipment: – gloves, goggles, hard hat, ear protection, protective footwear, protective knee pads. PPE available All operations must be carried out by personnel trained on possible general, electrical and pressure equipment risks.

  • Page 7: User Training

    Safety considerations 1.6 Maintenance Schedule periodic inspections and maintenance work in order to prevent or reduce repair costs. Disconnect voltage before any operation and wait 10 minutes before any action on electrical components. Changes All modifications to the unit will invalidate the warranty and void the manufacturer’s liability. 1.8 Fault or malfunction Disable the unit immediately if there is a fault or malfunction.

  • Page 8: Unit Identification

    Safety considerations 1.11.2 Unit identification The serial number label is positioned on the unit to identify all the features of the unit. The serial number label bears the information required by the regulations, such as: • the type of unit •...

  • Page 9: Refrigerant Information

    Refrigerant information 2. Refrigerant information WARNING This product contains fluorinated greenhouse gases covered by the Kyoto protocol. It is essential to limit any leaks, otherwise it will be a major contributor to the anthropogenic greenhouse effect. WARNING Do not discharge gas into the atmosphere. Type of refrigerant: R-32 The refrigerant quantity is indicated on the unit plate.

  • Page 10: Description Of The System

    Description of the system 3. Description of the system Main components 3.1.1 Sizes 2.1 to 3.1 Fig. 1 Component Pressure sensor Electronic expansion valve HP pressure switch Water flow switch Air vent valve Source exchanger: finned coil 4-way valve Main board Water side heat exchanger Water circulator LP pressure switch...
  • Page 11 Description of the system 3.1.2 Sizes 4.1 to 5.1 Fig. 2 Component Electronic expansion valve Water flow switch Air vent valve Water pressure relief valve Pressure sensor 4-way valve HP pressure switch Source exchanger: finned coil Fan motor Main board Water circulator Water side heat exchanger Gas-liquid separator...
  • Page 12 Description of the system 3.1.3 Sizes 6.1 to 8.1 Fig. 3 Component HP pressure switch 4-way valve Pressure sensor Electronic expansion valve Gas-liquid separator Water flow switch Air vent valve Water pressure relief valve Source exchanger: finned coil Fan motor Main board Water circulator Water side heat exchanger...
  • Page 13 Description of the system 3.1.4 Sizes 9.1 to 14.1 Fig. 4 Component Main board 4-way valve Pressure sensor Electronic expansion valve HP pressure switch LP pressure switch Water circulator Water pressure relief valve Pressure gauge Compressor inverter Gas-liquid separator Fan motor Source exchanger: finned coil Liquid receiver Non-return valve...

  • Page 14: Hydraulic Module

    Description of the system 3.2 Hydraulic module 3.2.1 Sizes 2.1 to 3.1 Standard version without built-in heater Version with built-in heater 2.1 - 3.1 2.1 - 3.1 Fig. 5 Component Automatic air vent valve Additional/backup electric heater (optional configuration) Expansion tank Refrigerant gas pipe Temperature sensors Refrigerant pipe...
  • Page 15 Description of the system 3.2.2 Sizes 4.1 to 8.1 Standard version without built-in heater Version with built-in heater 4.1~8.1 4.1~8.1 Fig. 6 Component Automatic air vent valve Additional/backup electric heater (optional configuration) Expansion tank Refrigerant gas pipe Temperature sensors Refrigerant pipe Flow switch Pump Plate heat exchanger...
  • Page 16 Description of the system 3.2.3 Sizes 9.1 to 14.1 12.2 12.1 Fig. 7...
  • Page 17 Description of the system Component Automatic air vent valve Expansion tank Circulation pump Pressure relief valve Pressure gauge Flow switch Refrigerant gas pipe Refrigerant pipe Plate heat exchanger Water outlet pipe Water inlet pipe 12.1 Electric heating tape 12.2 Electric heating tape Temperature sensors...

  • Page 18: Technical Data

    In the case of larger distances, contact the supplier for information on possible risks and suggestions to limit them. CAUTION If the unit is far away from the DHW storage tank, measure the connection pipes accordingly and check that they are properly insulated. 3.3.1 Maximum temperatures of components not supplied by CLIVET System 75°C 95°C...

  • Page 19: Accessories Supplied With The Unit

    Description of the system 3.4 Accessories 3.4.1 Accessories supplied with the unit The following accessories are included in the “A” or “B” packaging: Description Quantity Installation, use and maintenance manual Energy label Y filter User interface Water temperature probe (for T5 / T1 / Tw2 / Tbt1 / Tsolar) Condensate drain fitting Cable tie Termination heater for connecting M/S units in cascade...

  • Page 20: Before Installation

    Before installation 4. Before installation Reception Before accepting the delivery, check: • that the unit has not been damaged during transport; • that the materials delivered correspond with that indicated on the transport document, comparing the data with the identification label positioned on the packaging. In case of damage or anomaly: •...

  • Page 21: Removing Packaging

    Before installation HANDLING WITH A CRANE Pass the straps for slinging the unit through the holes provided on the wooden packing pallet. Lift carefully and avoid sudden movements. Position the unit close to the installation site. HANDLING WITH A FORKLIFT TRUCK The unit can also be moved with a forklift truck using the holes provided on the base of the wooden pallet.

  • Page 22: Dimensions And Weights

    Before installation 4.5 Removing the transport bracket For models 6.1, 7.1 and 8.1, remove the bracket (3) used during transport to avoid stressing the compressor. • Remove the front panel (1). • Remove the screws (2). • Remove the bracket (3). Fig.
  • Page 23 Before installation 4.6.2 Sizes 4.1 to 8.1 Fig. 12 Size Height (A) Width (B) 1385 1385 1385 1385 1385 Depth (C) Weight 4.6.3 Sizes 9.1 to 14.1 Fig. 13 Size 10.1 12.1 14.1 Height (A) 1557 1557 1557 1557 Width (B) 1120 1120 1120...

  • Page 24: General Installation Requirements

    Installation 5. Installation 5.1 General installation requirements The installation site must fulfil the following conditions: • Well-ventilated areas ensuring an exchange of treated air. • Areas where the unit will not disturb neighbours. • Safe areas that can withstand the weight and vibrations of the unit and where it can be installed on flat ground.

  • Page 25: Standard Installation

    Installation 5.2 Standard installation Fig. 14 Size A(mm) 2.1~14.1 ≥300 Air inlet >300 Air inlet >600 Air outlet Parallel installation of two or more units Front to back >3000 >1000 >6000 >4000 >300 >300 >600 >3000 Fig. 15...
  • Page 26 Installation 5.3 Installation in extreme weather conditions 5.3.1 Unit exposed to strong wind • Do not install the unit in a location where the suction side may be directly exposed to wind. • Install the unit so that the air outlet fan is 90° to the direction of the wind. •...
  • Page 27 Installation 5.3.2 Unit exposed to direct sunlight Since the outdoor temperature is measured by the unit's thermistor, it is recommended to install the unit in a shady location or under a canopy to protect it from direct sunlight and heat. Fig.
  • Page 28 Installation 5.4 Ground assembly (mm) Use 6 sets of M12 anchor bolts, nuts and washers to secure the unit to the base. Leave a space of at least 150 mm under the unit. Place the unit on suitable antivibration mounts sized according to the weight of the unit so as to effectively dampen vibrations.

  • Page 29: Wall Assembly

    Installation CAUTION It is important to secure the unit with foundation bolts in accordance with the foundation drawing in ”Fig. 22”. (unit:mm) Ø10mm expansion plug Antivibration Support base mounts in concrete h ≥ 100mm Floor or roof Fig. 22 5.5 Wall assembly Two kits are available to secure the unit to the wall: bracket kit;...
  • Page 30 Installation 5.6 Handling Place the unit on the installation structure using slings. CAUTION Do not tilt or damage the unit during handling. ±150 Fig. 24 • Assemble the unit on the installation structure. 6× M12 Fig. 25 WARNING If the unit's drainage holes are covered by the installation base or floor surface, raise the unit to leave a gap of at least 120mm under the unit.
  • Page 31 Installation Connect the condensate drain and duct it in accordance with current regulations. Avoid siphons and short radius bends that can cause obstructions. Be careful to avoid possible accidental obstructions during operation. Condensate drain for models 2.1 - 3.1 Condensate drain for models 4.1 - 5.1 - 6.1 - 7.1 - 8.1 Fig.
  • Page 32 Installation 5.7 Access to internal parts of the unit The appliance has removable protection panels. To remove the protections: • unscrew the 4 screws in the panel; • pull the panel off. Reassemble following the removal procedure in reverse order. Fig.
  • Page 33 Nevertheless, it is advisable to connect the storage tank at no more than 10m from the unit. WARNING Use CLIVET tanks and accessories to ensure compatibility with the unit. On 200 l to 500 l storage tanks, a flanged solar pipe kit is available for on-site assembly. Whereas 1000 l tanks have a dedicated coil built in.
  • Page 34 WARNING Third-party tank performance data cannot be provided and performance cannot be guaranteed. Use CLIVET tanks and accessories for optimal performance. NOTE The unit is standard supplied with a 10m long temperature probe. A probe of up to 30m long can be...

  • Page 35: Condensate Drain

    Installation 5.8 Condensate drain When a heat pump is running it produces a considerable amount of water due to the defrosting cycles of the external coil. NOTE Condensate must be disposed of so as to avoid spillage over pedestrian areas. With particularly cold and prolonged outdoor temperatures, the condensate could freeze outside the unit, blocking the flow and generating a gradually increasing built-up of ice;...

  • Page 36: Water Connections

    Water connections 6. Water connections The unit has supply and return connections for connection to a water distribution system. Connection to the system must be carried out by authorised technicians and must comply with current laws and regulations. Fig. 31 6.1 Preliminary check 6.1.1 Water circuit...

  • Page 37: Water Characteristics

    Water connections 6.1.2 Water characteristics Circulators are designed to operate optimally only with clean, good quality mains water and may be affected by the presence of oxygen, limescale, sludge, abnormal acidity levels and other substances (including chlorides and minerals). The same can be said for the plate heat exchanger. Excessive water hardness can create deposits and limescale build-up that can damage the unit.

  • Page 38: Water Pipes

    Water connections 6.2 General system requirements (to be provided by the customer) 6.2.1 Air vent valves Provide vent valves at all high points of the system to allow air to escape from it. 6.2.2 Water filter on Domestic Hot Water side Install a filter to capture any water impurities, to avoid clogging the system and the exchanger, which should be installed immediately at the mains water inlet and in a position easily accessible for cleaning.
  • Page 39 6.3.3 Magnetic dirt separator filter It is highly recommended to install the magnetic dirt separator filter on the system circuit, it is advisable to use the filter supplied by CLIVET or equivalent. 6.3.4 Installation in new systems During installation, residues (welding, slag, joint products, etc.) or preservatives (e.g. mineral oil) can build up in the circuit.
  • Page 40 Water connections 6.4 Water circuit frost protection The unit is designed to be installed outdoors and can therefore be exposed to sub-zero temperatures: it is necessary to prevent ice from forming in the water circuit, which can cause serious damage. CAUTION Damage from freezing is not covered by the warranty.
  • Page 41 Water connections Ethylene glycol table Correction factors MIN outdoor Glycol temperature concentration Cooling capacity Power input Water resistance Water flow 0 °C -5 °C 0.984 0.998 1.118 1.019 -15 °C 0.973 0.995 1.268 1.051 -25 °C 0.965 0.992 1.482 1.092 Table for propylene glycol Correction factors MIN outdoor...
  • Page 42 Water connections 6.4.2 Using automatic frost protection valves Automatic frost protection valves are available as an accessory and drain water from the circuit, preventing freezing. Depending on the higher activation temperature of the frost protection valves, it may be necessary to adjust the minimum Cooling setpoint: carefully set it at least 2 °C higher than the minimum allowed (minimum default cooling setpoint = 5 °C;...

  • Page 43: Pipe Insulation

    Water connections Sizes 9.1~14.1 Fig. 35 6.4.4 Protection of Domestic Hot Water storage tank When the storage tank is full, the house may not be inhabited immediately or the unit may be left off for long periods. In such cases it is always advisable to empty the tank to avoid water stagnation or, at sufficiently low temperatures, freezing.
  • Page 44 Water connections 6.6 Water volume, system pressure and expansion tank control Check that the system has the minimum water content. The total volume of water, excluding that contained in the unit, must exceed the values in the table: Size 2.1 to 3.1 4.1 to 8.1 9.1 to 14.1 MIN water volume...
  • Page 45 Water connections 6.6.3 Sizes 9.1 to 14.1 Depending on the operating conditions, the preset pressure may need to be adjusted on site. Measure the system height difference H: the difference in height in metres between the highest point of the water circuit and the unit.
  • Page 46 Water connections The total volume of water in the system must be less than that indicated, otherwise an additional expansion tank will be required. The additional expansion tank must be adjusted to the Pg pressure and must have a volume sized with the formula: = 0.0693 x (VSYS / (2.5-Pg)) - V : additional expansion tank volume...
  • Page 47 Water connections 6.7 Filling / topping up with water The unit requires the system to be filled with water before start-up or may need to be topped up in special cases. In both cases follow the procedure: • connect the water supply to the filling valve and open the valve; •...

  • Page 48: Electrical Connections

    Electrical connections 7. Electrical connections WARNING – The fixed wiring must include a magnetothermic circuit breaker or other means of isolation with contact separation on all poles, to be implemented in accordance with the laws and regulations in force. – The protection must be sized in accordance with the electrical data declared by the manufacturer. –...
  • Page 49 Electrical connections Precautions for electrical connections Follow the precautions below before making electrical connections: • Secure electric cables with cable ties so that they do not come into contact with the pipes (especially avoid contact with the refrigeration circuit pipes on the high pressure side). •...

  • Page 50: General Diagram

    Electrical connections 7.2 General diagram Fig. 41 Ref. Description Ref. Description Unit DHW recirculation pump (not supplied) Solar kit (not supplied) 3-way valve (not supplied) 3-way valve for domestic hot water storage User interface tank (not supplied) Domestic hot water storage tank (not Room thermostat (not supplied) supplied) Boiler (not supplied)
  • Page 51 Electrical connections Ref. Description Solar kit signal cable User interface cable Room thermostat cable Boiler control cable Thermistor cable for Tw2 Domestic hot water pump control cable 2-way valve control cable 10 11 23 3-way valve control cable Thermistor cable T5 Booster heater control cable Contactor power supply for domestic hot water storage tank electric heater.

  • Page 52: Control Box

    Electrical connections 7.3 Control box 7.3.1 Sizes 2.1 to 8.1 Fig. 42 Inverter module (PCB A) Main control board (PCB B) Hydraulic module control board The picture of the control box is for reference only. 7.3.2 Sizes 9.1 to 14.1 Fig.
  • Page 53 Electrical connections 7.4 Location of connections 7.4.1 Sizes 2.1 to 3.1 Fig. 44 Hole for high voltage cable (power supply) Hole for low voltage cable (control and signal cables) Hole for drain pipe Water outlet Water inlet 7.4.2 Sizes 4.1 to 8.1 Fig.
  • Page 54 Electrical connections 7.4.3 Sizes 9.1 to 14.1 Fig. 46 Hole for high voltage cable (power supply) Hole for low voltage cable (control and signal cables) Hole for high/low voltage cable Water outlet Water inlet Hole for drain pipe Hole for pressure relief valve drain pipe NOTE Most of the electrical connections to be done on site are to be performed on the terminal block inside the control box.
  • Page 55 Electrical connections 7.5 Electrical connections 7.5.1 Precautions when connecting to the power supply • Use ring-pressure terminals for connections to the power supply terminal block. If this is not possible for unavoidable reasons, the instructions below should be followed. • Do not connect wires of different cross-sections to the same power supply terminal block. (Looseness in the power supply wires can cause overheating) •...
  • Page 56 Electrical connections Circular wiring terminal When connecting to the power supply terminal, use the circular wiring Insulation pipe terminal with the insulating sleeve. Power cable Use a power cable that meets the specifications and securely connect it. To prevent the cable from being pulled by an external force, ensure that it is properly secured.
  • Page 57 Electrical connections 7.5.2 Electrical connection specifications Compressor compartment and electrical parts: XT1 Fig. 50 Size FLA (A) Maximum tripping of protections (A) Cable cross-section (mm Size 6.1 3~ 10.1 12.1 14.1 FLA (A) 24.5 28.5 Maximum tripping of protections (A) Cable cross-section (mm NOTE The design of the power supply line and its protections is to be provided by the system’s...
  • Page 58 Electrical connections 7.5.3 Connection terminal block Fig. 51 Ref. Terminal block CN11 Ref. Terminal block CN7 Unit in operation Solar input signal DFT2 Defrosting state or Room thermostat alarm state DFT1 (220V) Antifreeze heater for pipes 1OFF AHS1 DHW 3-way valve Additional boiler AHS2 2OFF...
  • Page 59 Electrical connections Other terminal blocks Temperature probes additional heat source zone thermostat (12V) CN24 Tbt1 hydraulic separator CN31 CN16 Tbt2 not used CN13 DHW boiler boiler management signal (0-10V) CN15 mixed zone supply CN18 Tsolar solar thermal smart grid and CN35 photovoltaic inputs CN36...
  • Page 60 Electrical connections 7.6 Terminal block connection specifications 7.6.1 Terminal block CN11 Solar/Solar pump input Solar pump P_s Control from solar station Enabling and configuration on HMI Domestic hot water The electrical connection of the 3-way valve (SV1 - 3-way valve) is different for NC (normally closed) and NO (normally open) valves.
  • Page 61 Electrical connections Double zone system External pump - Secondary circuit pump P_o (zone 1) Type2 control signal SV2 2-way valve Enabling and configuration on HMI Double zone mixed system Zone 2 mixing pump - Pump P_c Type2 control signal 3-way valve SV3 Type2 control signal Room thermostat Enabling and configuration on HMI...
  • Page 62 Electrical connections External backup heater IBH1 IBH1 (IBHX) Enabling on dip-switch; configuration on HMI 7.6.2 Terminal block CN7 Unit in operation signal Type2 control signal Defrosting state or alarm state Type1 control signal Enabling and configuration on HMI Fuse Antifreeze heater for pipes Type2 control signal Additional boiler The boiler can be controlled in two ways...
  • Page 63 Electrical connections 7.7 SMART GRID - Photovoltaic management board of indoor unit Fig. 52 Description Photovoltaic signal Smart grid The unit operates normally The unit is switched off The unit is forced into DHW, even if switched off, with setpoint = T5S + 3°C The unit is forced into DHW with setpoint T5S = 60°C, if switched off;...

  • Page 64: Dip Switch Setting

    Electrical connections 7.8 Dip-switch setting The dip-switches are located on the main control board of the hydraulic module. Switch Unit with built-in heater (factory setting): 3kW IBH = 1 Off, 2 Off 6kW IBH = 1 Off, 2 On 9kW IBH = 1 On, 2 On IBH and AHS absent = 3 Off, 4 Off IBH present = 3 On, 4 Off (if with built-in heater: factory setting;...

  • Page 65: User Interface

    Electrical connections 7.9 User interface NOTE Use a shielded wire and connect to earth. This appliance supports the MODBUS RTU communication pro- tocol. Refer to the attached documentation for more information. The user interface can also be used as a room thermostat. For configuration see Chapter 8.
  • Page 66 Electrical connections 7.9.1 User interface installation requirements Do not install in environments with a strong presence of oil, steam or gaseous sulphides. Failure to do so may result in damage to the product and malfunction. • Check that all the components listed below are present •...
  • Page 67 Electrical connections Installing the back cover • Insert a flat screwdriver into the indentation at the bottom of the wired controller and pry the back cover off. (Pry off in the correct direction, otherwise the back cover risks being damaged) •...
  • Page 68 Electrical connections Installation in electrical box 86 Three holes for M4X20 wall Tre fori per vite a muro utilizzare M4X20 screw use Coperchio Back cover posteriore Holes for screws to install on electrical Fori per le viti da installare sulla scatola elettrica 86 box 86 use two M4X25 screws usare due viti M4X25 Signal cables...
  • Page 69 Electrical connections Installing the front cover Adjust and then secure the front cover. Do not crush the communication wire during installation. WARNING The sensor must not be exposed to humidity. Install the back cover correctly and attach the front cover firmly to it (otherwise the front cover may fall off). Fig.
  • Page 70 Electrical connections 7.10 Zone thermostat The zone thermostat (to be supplied separately: use the Manufacturer's accessory or equivalent) can be connected in three different ways. The choice of which one to use depends on the type of application. Method A One zone system with zone thermostat managing the unit’s CN11 ON/OFF and mode change.

  • Page 71: Water Connections

    Electrical connections 7.11 Units connected in cascade The cascade function of the system supports a maximum of 6 units. 7.11.1 Water connections The water connection should preferably be an inverted return connection for better water balance be- tween the different units. It is also mandatory to install non-return valves in parallel units to stop the flow through the unit from short circuiting when the circulator is not running.
  • Page 72 Electrical connections Wiring diagram of the electrical control system for the cascade system (1N ~) Master Unit Slave Unit Please use shielded wire, and the shielding layer must be earthed Master Unit Slave Unit 1 Slave Unit 2 Slave Unit x Only the last IDU requires construction heater...
  • Page 73 Start-up - initial settings and functions 8. Start-up - initial settings and functions The unit is equipped with a user interface (hereafter also called HMI) to be installed on site and used to manage the functions. The user interface has a built-in temperature probe for possible use as a thermostat. It is designed to have different levels of access depending on the settings to be adjusted: free access func- tions are designed to be set by the Customer, protected access functions are to be set by a specialised technician.

  • Page 74: Display And Icons

    Start-up - initial settings and functions 8.1.2 Display and icons The HMI display has the following icons: Keypad Weekly schedule lock At the next scheduled action, Time schedule the temperature will decrease The temperature does Outdoor temperature not change The temperature decreases Wi-Fi The temperature...
  • Page 75 Start-up - initial settings and functions 8.1.3 First switch-on and language selection When the unit is switched on for the first time, the HMI will initialise the system and display the percentage of completion (1%~99%): the HMI cannot be used during this process. The HMI then prompts you to select the system language from those available: Fig.
  • Page 76 Start-up - initial settings and functions 8.1.5 Functions reserved for the Technician The “FOR SERVICEMAN” section contains the settings that can be adjusted by the Technician when starting the unit for the first time. Once the appropriate section has been selected from the main menu, an access password will be request- FOR SERVICEMAN Enter password : CONFIRM...

  • Page 77: Terminology Used

    Start-up - initial settings and functions 8.1.6 Terminology used The terms related to this unit are shown in the table below Parameter Description Backup boiler Backup electric heater Unit pump or Zone 1 pump (for double zone systems) Secondary circuit pump (or Zone 1 pump for double zone systems) Zone 2 pump (for double zone systems) DHW recirculation pump Solar circuit pump...
  • Page 78 Start-up - initial settings and functions 8.2 Initial unit setting (requires a specialised Technician) 8.2.1 DHW (Domestic Hot Water) mode settings MENU > FOR SERVICEMAN > 1. DHW MODE SETTING 1 DHW MODE SETTING 1.1 DHW MODE 1.2 DISINFECT 1.3 DHW PRIORITY 1.4 PUMP D 1.5 DHW PRIORITY TIME SET NONE...
  • Page 79 Start-up - initial settings and functions 1 DHW MODE SETTING 1.6 dT5_ON 5°C 1.7 dT1S5 10°C 1.8 T4DHWMAX 43°C 1.9 T4DHWMIN -10°C 1.10 t_INTERVAL_DHW 5 MIN ADJUST Fig. 70 1.6 dT5_ON (standard: 10 - settable: 1/30) Controls activation of the DHW request, defining the temperature range between DHW setpoint (T5S) and DHW storage tank temperature (T5) beyond which the heat pump is to be activated.
  • Page 80 Start-up - initial settings and functions NOTE If the DHW setpoint (T5S) > 55°C, change the parameter according to the formula dT1S5 = 65 - T5S. Setting dT1S5 higher than this criterium makes the unit work faster and less efficient in charging cycles but also means that the unit will go into normal protection before reaching the setpoint with subsequent restart and loss of the benefits of the faster ramp.
  • Page 81 Start-up - initial settings and functions 1.12 T4_TBH_ON (standard: 5 - settable: -5/50) Defines the maximum outdoor air temperature at which the TBH heater can be activated. T4DHWMAX solo Pompa di Calore Heat Pump only T4_TBH_ON Pompa di Calore Heat Pump + Resistenza + Heater T4DHWMIN...
  • Page 82 Start-up - initial settings and functions t_DI_HIGHTEMP T5S_DI t_DI_MAZ T5: DHW storage tank water temperature T5S: DHW set temperature Fig. 75 1 DHW MODE SETTING 1.16 t_DI_MAX 210 MIN 1.17 t_DHWHP_RESTRICT 30 MIN 1.18 t_DHWHO_MAX 120 MIN 1.19 PUMP_D TIMER 1.20 PUMP_D DISINFECT TIME 5 MIN ADJUST...
  • Page 83 Start-up - initial settings and functions 1 DHW MODE SETTING 1.21 PUMP_D DISINFECT RUN NONE 1.22 ACS FUNCTION NONE 1.23 t_ANTILOCK 5 MIN Fig. 77 ADJUST 1.21 PUMP_D DISINFECT RUN (standard: YES - settable: NO/YES) Enables activation of the recirculation pump even during the anti-legionella cycle. Activation of the function is recommended.
  • Page 84 Start-up - initial settings and functions 2.6 dTSC (standard: 2 - settable: 1/10) Defines the range between the room air temperature (Ta) and the setpoint (TS) within which the unit starts to operate in Cooling mode. The heat pump starts when Ta ≥ TS + dTSC and stops when Ta ≤ TS. Fig.
  • Page 85 Start-up - initial settings and functions (T1S) water supply T1SETC1 T1SETC2 T4C1 T4C2 (T4) Fig. 80 8.2.3 Heating mode settings MENU > FOR SERVICEMAN > 3. HEATING MODE 3.1 HEAT MODE (standard: YES - settable: YES/NO) Enables/disables Heating mode. 3.2 t_T4_FRESH_H (standard: 0.5 - settable: 0.5/6) Sets the time when the unit updates the climate curve, adjusting it according to the outdoor air temperature.
  • Page 86 Start-up - initial settings and functions Fig. 82 NOTE The parameter is only used if the unit's Heating mode control is on room air temperature. 3.7 t_INTERVAL_HEAT (standard: 5 - not adjustable) Defines the minimum minutes between compressor shutdown and subsequent restart in Heating mode. Among the climate curves that can be set for Heating mode, a customisable one can be set with logic as shown in the graph.

  • Page 87: Automatic Mode Settings

    Start-up - initial settings and functions 3.13 ZONE2 H-EMISSION (standard: CRP (2.1-8.1) / CRP (9.1-14.1) - settable: CRP/CVC/RAD) Sets the type of distribution system in Heating mode of the system’s zone 2. NOTE CRP = radiant / CVC = fan coils / RAD = radiators. 3.14 t_DELAY_PUMP (standard: 2 - settable: 0.5/20) Sets the minutes of delay between compressor switch-off and pump switch-off.

  • Page 88: Control Settings

    Start-up - initial settings and functions 8.2.5 Control settings During the initial start-up phase, the type of control required for the system can be selected. The unit can be managed with control on: • supply water temperature (T1), which has two options: •...
  • Page 89 Start-up - initial settings and functions NOTE Parameters 5.1 and 5.2 are set to YES, 5.3 will be automatically changed to YES. The two zones can be controlled in different ways: Zone 1 and Zone 2 Both are controlled according to the supply water temperature (T1). Parameters 5.1 WATER FLOW TEMP.
  • Page 90 Start-up - initial settings and functions 8.2.6 Zone thermostat settings MENU > FOR SERVICEMAN > 6. ROOM THERMOSTAT A zone thermostat can be used to manage the request to the unit. NOTE The HMI must still be connected to the unit in order to manage its internal parameters. 6.1 ROOM THERMOSTAT (standard: NO - settable: NO/MODE SET/ONE ZONE/DOUBLE ZONE) Enables/disables the request to the unit from zone thermostats other than the HMI.
  • Page 91 Start-up - initial settings and functions (T4) solo Pompa di Calore Heat Pump only T4_IBH_ON T4_AHS_ON Pompa di Calore Heat Pump + Resistenza + Heater T4DHWMIN Heater only solo Resistenza Fig. 90 NOTE – To make the additional source work only as a replacement for the unit, set the parameter to the same value as T4HMIN (the minimum outdoor temperature at which the heat pump can operate).
  • Page 92 Start-up - initial settings and functions 7.4 dT1_AHS_ON (standard: 5 - settable: 2/20) Defines the range between the water supply temperature (T1) and the setpoint (T1S) beyond which the boiler is switched on. When T1S - T1 ≥ dT1S_AHS_O, the boiler is switched on. 7.5 t_AHS_DELAY (standard: 30 - settable: 5/120) Defines the minimum minutes between compressor start-up and boiler start-up.
  • Page 93 Start-up - initial settings and functions 7.15 MIN_SETHEATER (standard: 30 - settable: 0/80) Defines the minimum setpoint value that can be reached by the boiler, which is used to control the 0-10V signal. 7.16 MAX_SIGHEATER (standard: 10 - settable: 0/10) Defines the signal voltage associated with the maximum setpoint value that can be set in the boiler.
  • Page 94 Start-up - initial settings and functions NOTE Navigate through the components to be tested with . Force activation of the component by setting it to ON and pressing The components that can be activated are: 3WAY-VALVE 1: 3-way DHW diverter valve 3WAY-VALVE 2: 3-way diverter valve for unmixed double zone systems PUMP_I: primary circuit pump (P_i) PUMP_O: secondary circuit pump (P_o)
  • Page 95 Start-up - initial settings and functions 11.3 CIRCULATED PUMP RUNNING Starts the unit's circulation pump. 11 TEST RUN Test run is on. Circulated pump is on. CONFIRM Fig. 93 The logic establishes that: • all running components are stopped • after 60 seconds, the 3-way valve (SV1) opens and the 2-way valve (SV2) closes •...
  • Page 96 Start-up - initial settings and functions 11 TEST RUN Test run is on. Heat mode is on. Leaving water temperature is 15°C CONFIRM Fig. 95 The logic establishes that: • the unit switches on in Heating mode, with water supply setpoint at 35°C •...
  • Page 97 Start-up - initial settings and functions 8.2.12 Special function settings MENU > FOR SERVICEMAN > 12. SPECIAL FUNCTION Special functions can be used during installation or maintenance to better manage or access the system, e.g. on first start-up to run a radiant floor drying cycle or when the unit is restarted after being OFF for a long period.
  • Page 98 Start-up - initial settings and functions t_frisFH (standard: 72 - settable: 48/96) Defines how long the floor preheating function runs for. The HMI display shows the water supply temperature and the operating time of the function. 12.1 PREHEATING FOR FLOOR Preheat for floor is running for 25 minutes.
  • Page 99 Start-up - initial settings and functions Defines the maximum water supply temperature of the function. START TIME (standard: current time - settable: 00:00/23:30) Defines the start time of the function. START DATE (standard: today - settable: 1-1-2000/31-12-2099) Defines the start date of the function. The HMI display shows the water supply temperature and the operating time of the function.
  • Page 100 Start-up - initial settings and functions 8.2.15 Unit input signal settings MENU > FOR SERVICEMAN > 15. INPUT DEFINE This function is used to adjust and set the unit input signal and probe functions according to the require- ments of the system. The parameters that can be set for this function are: M1M2 (standard: 0 - settable: 0/1/2) Defines what the potential-free contact M1M2 should control (0 = remote ON/OFF;...
  • Page 101 Start-up - initial settings and functions 8.2.16 Cascade system settings MENU > FOR SERVICEMAN > 16. CASCADE SET Used to set the unit as part of a cascade system. The parameters that can be set for this function are: 16.1 PER_START (standard: 10% - settable: 10%/100%) Defines the percentage of units that are activated at system start-up.
  • Page 102 Start-up - initial settings and functions 8.2.18 Climate curve setting Climate curves can be selected on the user interface: MENU > DEFAULT TEMPERATURES > CLIMATE TEMP. SET. DEFAULT TEMPERATURES DEFAULT CLIMATE TEMP. TEMP. SET. MODE LOW. TEMP.COOL MODE ZONE 1 LOW.
  • Page 103 Start-up - initial settings and functions • 8 default curves for Heating mode on systems with terminal distribution. Fig. 102 NOTE The default curve for Heating mode is 4, for ECO mode it is 6. • 1 customisable curve, using the outdoor air temperature (T4H1, T4H2) and water supply (T1SETH1, T1SETH2) parameters.
  • Page 104 Start-up - initial settings and functions • 8 default curves for Cooling mode on systems with radiant distribution. Fig. 104 NOTE The default curve for Cooling mode is 4. • 8 default curves for Cooling mode on systems with terminal distribution. Fig.

  • Page 105: Network Configuration Settings

    Start-up - initial settings and functions • 1 customisable curve, using the outdoor air temperature (T4C1, T4C2) and water supply (T1SETC1, T1SETC2) parameters. (T1S) ROOM TEMP. SET. water supply CLIM. TEMP. SET.TYPE T1SETC1 T1SETC2 CONFIRM T4C1 T4C2 (T4) Fig. 106 8.2.19 Network configuration settings The unit can be controlled and managed through the MSmartHome App via a Wi-Fi module built into the HMI, which provides various features.
  • Page 106 Start-up - initial settings and functions Sign up/Log in Open the App and create a new account on the home page or log in: • Registration fill in and click on Sign up to create an account • Login fill in and click on Login Click Click Fig.
  • Page 107 Start-up - initial settings and functions On a smartphone: Connecting to the Wi-Fi network Click Complete to finish Click Connect your appliance to WiFi From the device settings, The App prompts you to select the network connect the device to the Wi-Fi XXX_c3_xxxx Wi-Fi network Password: 12345678...

  • Page 108: Explanation Of Buttons

    Control 9. Control Explanation of buttons Fig. 113 Buttons Function MENU To open the various menus from the HOME page. To switch on/off the heating/cooling modes or DHW mode ON/OFF To switch on/off the functions in the menu structure UNLOCK Press the button for 3 seconds to Unlock/Lock the keypad To enter a submenu To confirm entered values...

  • Page 109: Explanation Of The Display

    Control 9.2 Explanation of the display Fig. 114 Keypad lock Compressor on At the next scheduled action, the Pump on 8:00 temperature will decrease The temperature does not Weekly schedule change The temperature decreases Time schedule The temperature increases Outdoor temperature Fan coil Wi-Fi Radiator...
  • Page 110 Control 9.3 Explanation of the display The home page changes according to the type of system NOTE Configuration to be provided by the installer. Installer Single zone system 01-01-2021 9:00 • User interface control: MENU > FOR SERVICEMAN > ROOM THERMOSTAT > ROOM THERMOSTAT= NO 8:00 •...

  • Page 111: Menu Structure

    Control 9.4 Menu structure Press “UNLOCK” for 3 seconds to unlock the keypad. MENU MENU OPERATION MODE 7 OTHER HEATING SOURCE DEFAULT TEMPERATURES SERVICE INFORMATION DOMESTIC HOT WATER (DHW) OPERATION PARAMETERS TIME SCHEDULE FOR SERVICEMAN OPTIONS WLAN SETTINGS CHILD LOCK DIS.
  • Page 112 Control 9.5 Home page The Home page is the Customer's access point for daily control and varies depending on the system (and the relevant configuration set by the Technician at first start-up). Example for a single zone system: 01-01-2021 9:00 8:00 System ON/OFF and...
  • Page 113 Control 9.6 Menu structure About the menu structure The menu structure allows you MENU to read and configure settings that are NOT intended for OPERATION MODE everyday use. These instructions describe the information displayed and the DEFAULT TEMPERATURES operations that can be performed in the menu structure. DOMESTIC HOT WATER (DHW) TIME SCHEDULE To go to the menu structure...

  • Page 114: Unlocking The Keypad

    Control 9.7 Unlocking the keypad If the keypad UNLOCK icon ( ) appears on the screen, it 01-01-2021 9:00 means that the keypad is locked. Press any button: the UNLOCK icon will flash. Long press the UNLOCK button ( ). 01-01-2021 9:00 The icon will disappear from the screen and the interface can...
  • Page 115 Control 9.8 Unit ON/OFF The black selection cursor must not be present when switching 01-01-2021 9:00 the unit on/off. Press the ON/OFF button for 5 seconds. ON/OFF 9.9 Controls OFF/ON On the interface it is possible to switch on or off the unit for 01-01-2021 9:00 room heating or cooling.
  • Page 116 Control If DHW MODE SETTING is set to NO, the following pages will 01-01-2021 9:00 be displayed without the DHW function. ON/OFF ON/OFF 01-01-2021 9:00 The room thermostat can be used to switch the unit on or off 01-01-2021 9:00 for heating or cooling the room.
  • Page 117 Control If the room thermostat is set to NO (see FOR SERVICEMAN 01-01-2021 9:00 section). Press the LEFT or UP button on the page and the black cursor will appear. When the cursor is on the system temperature side, press the ON/OFF button to switch the fancoils on/off.

  • Page 118: Temperature Control

    Control On the interface it is possible to switch on or off the unit for 01-01-2021 9:00 domestic hot water production. Press RIGHT on the page and the black cursor will appear. When the cursor is on the DHW temperature side, press the ON/OFF button to switch the domestic hot water production on/off.
  • Page 119 Control When the cursor is on the temperature, press LEFT, RIGHT to 01-01-2021 9:00 select and press Up, Down to adjust the temperature. 01-01-2021 9:00 01-01-2021 9:00 01-01-2021 9:00...

  • Page 120: Select Operation Mode

    Control 9.11 Select operation mode Select the operation mode on the interface, go to OPERATION MODE MENU > OPERATION MODE Operation mode setting: Press OK. HEAT COOL AUTO Three modes are available: HEAT for heating, COOL for cooling and AUTO for automatic control.

  • Page 121: Default Temperatures

    Control 9.12 Default temperatures DEFAULT TEMPERATURES has 3 modes for setting the DEFAULT TEMPERATURES temperature: DEFAULT TEMP.\CLIM.TEMP. SET.\ECO MODE. DEFAULT CLIMATE TEMP. TEMP. SET. MODE Default temperatures TIME TEMP. The DEFAULT TEMP. function is used to set temperatures for 00:00 25°...
  • Page 122 Control A possible DEFAULT TEMP. schedule is shown here TIME TEMPERATURE 8:00 35°C NOTE 8:00 25°C When the room operation mode is changed, DEFAULT TEMP. 12:00 35°C is automatically switched off and the schedule must be set 18:00 25°C again. The DEFAULT TEMP.
  • Page 123 Control Select ON and the following page appears. ROOM TEMP. SET. Selecting climate curves CLIM. TEMP. SET.TYPE Press LEFT, RIGHT to scroll. Press OK to select. CONFIRM DEFAULT TEMPERATURES DEFAULT CLIMATE TEMP. TEMP. SET. MODE LOW. TEMP.COOL MODE ZONE 1 LOW.

  • Page 124: Eco Mode

    Control 9.14 ECO mode ECO mode is used to save energy. DEFAULT TEMPERATURES The ECO MODE function is activated if DOUBLE ZONE is on CLIMATE NO, if DOUBLE ZONE is on YES, the ECO MODE function is DEFAULT TEMP. SET. TEMP.

  • Page 125: Domestic Hot Water (Dhw)

    Control 9.15 Domestic hot water (DHW) DHW mode for domestic hot water production includes the following functions: DISINFECT (anti-legionella) FAST DHW TANK HEATING DHW PUMP (DHW recirculation) 9.15.1 Disinfect (anti-legionella) The DISINFECT function is used to eliminate legionella DOMESTIC HOT WATER (ACS) bacteria by raising the storage tank temperature to 65-70°C) The disinfect temperature is set in DHW MODE.
  • Page 126 Control 9.15.2 Fast DHW The fast DHW function is used to force DHW mode for DOMESTIC HOT WATER (ACS) domestic hot water production. The heat pump will be switched on together with the storage DISIN- FAST HEAT. PUMP FECT TANK tank heater and the domestic hot water temperature will be brought to setpoint.
  • Page 127 Control 9.15.3 Tank heating The TANK HEAT. function is used to force the water to heat DOMESTIC HOT WATER (ACS) up in the storage tank (using the storage tank heater) in cases where the heat pump is on for heating or cooling functions but DISIN- FAST HEAT.
  • Page 128 Control 9.15.4 DHW pump (recirculation) if present To enable the function, select DOMESTIC HOT WATER (DHW) MENU > FOR SERVICEMAN > DHW MODE SETTINGS DISIN- FAST HEAT. PUMP FECT TANK Enable parameters: 1.4 DHW PUMP; START START 1.19 DHW PUMP OPER.TIME 00.00 00.00 00.00...

  • Page 129: Time Schedule

    Control 9.16 Time schedule The menu includes the following functions: TIMER for daily schedule. WEEKLY SCHED. for weekly schedule. SCHED. CHECK to check the schedule. CANCEL TIMER to delete the schedule 9.16.1 TIMER If the weekly schedule is ON and the TIMER function is OFF, TIME SCHEDULE the setting that is on takes precedence.

  • Page 130: Weekly Schedule

    Control The unit is switched on as follows: Fig. 119 Operation of the control unit according to the schedule: TIME Control unit operation 1:00 DHW mode is switched ON 3:00 DHW mode is switched OFF 7:00 Heating mode is switched ON 9:00 Heating mode is switched OFF 11:30...
  • Page 131 Control Press LEFT or RIGHT to select the days, press OK to select or TIME SCHEDULE deselect the day. The days from Monday to Friday are selected and have the WEEK. SCHED. CANCEL TIMER SCHED. CHECK TIMER same schedule. MON TUE WED THU SAT SUN CONFIRM CANCEL...
  • Page 132 Control 9.16.3 Schedule check The schedule check can only check the weekly schedule. TIME SCHEDULE Select MENU > SCHEDULE > SCHED. CHECK WEEK. SCHED. CANCEL TIMER SCHED. CHECK TIMER Press OK WEEK. SCHED. CHECK CONFIRM Press Down, Up to display the schedule from Monday to WEEK.
  • Page 133 Control NOTE The ECO MODO function has the highest priority, followed in sequence by the TIMER or WEEKLY SCHED. func- tions and the DEFAULT TEMP. or CLIM.TEMP.SET. functions. If ECO MODE is on, the DEFAULT TEMP. or CLIM.TEMP.SET. functions are disabled. If ECO MODE is off, the DEFAULT TEMP.

  • Page 134: Silent Mode

    Control 9.17 Options The Options menu includes the following functions: SILENT MODE HOLIDAY AWAY HOLIDAY AT HOME BACKUP HEATING 9.17.1 Silent mode Silent Mode enables quieter operation of the unit. However, it OPTIONS also reduces the heating/cooling capacity of the system. SILENT HOLIDAY HOLIDAY...
  • Page 135 Control 9.17.2 Holiday Away If the Holiday Away function is on, the icon appears on the OPTIONS home page SILENT HOLIDAY HOLIDAY BACKUP This function prevents the system from freezing during winter MODE AWAY AT HOME HEAT holidays away from home and restarts the unit before returning CURRENT STATE home, while at the same time limiting consumption of the unit when not in use.
  • Page 136 Control 9.17.3 Holiday at home The HOLIDAY AT HOME function allows you to schedule up OPTIONS to 6 programmes without changing the normal schedule when spending your holidays at home. SILENT HOLIDAY HOLIDAY BACKUP MODE AWAY AT HOME HEAT During the holiday, the HOLIDAY AT HOME mode allows you CURRENT STATE to override the normal schedule without changing it.

  • Page 137: Backup Heater

    Control If a start time is set later than the end time, or a temperature OPTIONS outside the allowed range is set for the chosen operation mode, the following page appears. SILENT HOLIDAY HOLIDAY BACKUP MODE AWAY AT HOME HEAT Timer 1 not required The start time is the same as the end time.
  • Page 138 Control Press Down, Up to scroll and press ON/OFF to lock or unlock CHILD LOCK one or more operation modes. COOL/HEAT TEMP. ADJ. UNLOCK The cooling/heating temperature cannot be adjusted when COOL/HEAT MODE ON/OFF UNLOCK COOL/HEAT TEMP. ADJ. is locked. DHW TEMP.

  • Page 139: Service Information

    Control 9.18 Service information 9.18.1 Service information The SERVICE INFORMATION menu includes the following SERVICE INFORMATION functions: Service call: displays the contacts needed to call for CODE PARA- DISPLAY SERVICE ERROR METERS assistance; Error code: displays the meaning of the error codes; TELEPHONE NO.
  • Page 140 Control Press OK to display the meaning of the error code. 01-01-2021 9:00 NOTE A total of eight error codes can be stored. E2 Communication error between the controller and the indoor unit Contact the serviceman. CONFIRM 9.18.4 Parameters The PARAMETERS function displays the main parameters, SERVICE INFORMATION which are shown on two pages.
  • Page 141 Control 9.18.5 Display The DISPLAY function is used to set the interface SERVICE INFORMATION Press OK to open the function and press LEFT, RIGHT, Down, CODE PARA- DISPLAY SERVICE ERROR METERS Up to scroll and adjust the values. TIME 9:00 DATE 01 - 01 - 2021 LANGUAGE...

  • Page 142: Operation Parameters

    Control 9.19 Operation parameters Installer The OPERATION PARAMETERS menu is used by the installer or the technician to check the operation parameters. The values shown on the pages are only indicative. On the home page, select MENU > OPERATION PARAMETERS Press OK The operation parameters are displayed on the following 9 pages.

  • Page 143: Modbus Registers

    MODBUS registers 10. MODBUS registers 10.1 Controls Address Meaning Description register bit15 Reserved bit14 Reserved bit13 Reserved bit12 Reserved bit11 Reserved bit10 Reserved bit9 Reserved bit8 Reserved ON/OFF bit7 Reserved bit6 Reserved bit5 Reserved bit4 Reserved bit3 0= off (T2S); 1= on (T2S) (WATER FLOW TEMP control - zone bit2 0= DHW (T5S) off;...
  • Page 144 MODBUS registers Address Meaning Description register bit15 Reserved bit14 Reserved bit13 1 = ZONE 2 curve on; 0 = ZONE 2 curve disabled bit12 1 = ZONE 1 curve on; 0 = ZONE 1 curve disabled bit11 DHW pump operating with return water at constant temperature bit10 ECO mode...
  • Page 145 MODBUS registers 10.2 States Address Meaning Description register Compressor operating frequency in Hz. Operating frequency Value read = current value Unit’s operation mode, 0: shut down Operation mode 2: cooling, 3: heating, Fan speed, unit: rpm. Fan speed Value read = current speed value ODU electronic expansion valve opening, unit: P.
  • Page 146 MODBUS registers Address Meaning Description register Error code Error code 2 Specific error code, refer to the code table. Error code 2 Error code 3 BIT15 Ask for installation parameter, 1: ask; 0: don’t ask BIT14 Load software version, 1: ask; 0: don't ask BIT13 Load SN, 1: ask;...
  • Page 147 MODBUS registers Address Meaning Description register Water flow Value read = current value* 100 [unit: m³/hour] ODU frequency Diagram value ----- ODU feedback 174 limitation IDU capacity Value read = current value* 100 unit: kW Solar T Number of units in BIT1-BIT15 represents the online/offline state of 1-1 5 units cascade BIT0 Reserved...
  • Page 148 MODBUS registers 10.3 States of units in cascade Address Meaning Description register 1000 Operation mode Operation mode, 2: cool, 3: heat; 0: OFF 1001 Comp. Frequ. Comp.freq., unit: Hz, (value read = current value) 1002 TW_in, unit:°C entering water temperature; (value read = current value) 1003 TW_out, unit:°C leaving water temperature;...
  • Page 149 MODBUS registers Address Meaning Description register 1019 Water flow (value read = current value)* 100, unit: M3/H 1020 Unit type 10-18 : means 10-18KW 1021 Unit target frequency 1022 Software version 1~99 means IDU software version 1023 High bit of capacity 1024 Low bit of capacity 1025...
  • Page 150 MODBUS registers 10.4 Alarms In the event of malfunctions, alarms are indicated by the appearance of the “Active alarm” symbol on the multifunction keypad. To view the alarms select Menu ⊲ Service information To reset an alarm, remove the cause of the alarm and reset the active alarm. Before resetting an alarm, iden- tify and remove the cause of the alarm.
  • Page 151 MODBUS registers Error Modbus Description code Code Communication error between slave and master (this error occurs when several units are connected in parallel) Communication error between hydraulic module and hydraulic module adapter board Unit EEPROM failure H6 failure 10 consecutive times in 120 minutes (reset after shut down) Cooling mode low pressure protection (in 1 hour, low pressure is below 0.6 MPa three consecutive times, can be reset automatically) Heat sink over-temperature protection...
  • Page 152 Access to parameters or modifications are only allowed to a qualified serviceman who assumes all respon- sibility, in case of doubt contact Clivet. For any changes not permitted or not approved by Clivet, Clivet declines any responsibility for malfunctions and/or damage to the unit/system and to people...
  • Page 153 MODBUS registers Address Meaning Description register BIT15 DHW enabling/disabling BIT14 Storage tank water electric heater TBH (read only) BIT13 Disinfect function BIT12 DHW pump; 1=enabled ; 0=disabled BIT11 Reserved BIT10 The DHW pump supports pipe disinfection BIT9 Cooling mode enabling T1S cooling mode high/low temperature control (read only) BIT8 zone 1...
  • Page 154 Room temperature for starting the additional heating source AHS. A series: range: -15 ~ 30°C T4_AHS_on E series: control range -15 ~ 10 °C Clivet model default value is 10°C, Midea model -5°C The temperature difference for starting the additional heating source AHS. dT1_AHS_on A Series: Default value 5°C;...
  • Page 155 MODBUS registers Address Meaning Description register Heating days; Default days; Control interval: t_DRYUP 4 ~15 days t_HIGHPEAK Floor drying days. Default 5 days, Control interval: 3 ~ 7 days t_DRYD Cooling days. Default 5 days. Control interval: 4~ 15 days Max floor drying temperature.
  • Page 156 Serviceman warnings 11. Serviceman warnings FLAMMABLE MATERIAL The refrigerant used inside this unit is flammable. A refrigerant leak that is exposed to an external ignition source can create fire risks. 11.1 Controls in the area Before starting work on a system containing flammable refrigerants, carry out the appropriate safety checks to ensure that the risk of ignition is minimal.
  • Page 157 Serviceman warnings 11.7 Area ventilation Before working on the system or performing hot operations, make sure the area is open or adequately ven- tilated. Ventilation must be constant for the entire duration of the operation. Ventilation must be capable of safely dispersing all refrigerant released and preferably expelling it outside into the atmosphere.
  • Page 158 Serviceman warnings Particular attention must be paid to the following aspects to ensure that, when working on electrical com- ponents, the casing is not altered to such an extent that the required level of protection is compromised, in- cluding damage to cables, excessive number of connections, use of terminals that do not conform to original specifications, damage to seals, incorrect assembly of glands, etc.
  • Page 159 Serviceman warnings 11.15 Removal and evacuation When the refrigerant circuit needs to be repaired or for other purposes, conventional procedures can be followed. However, it is important to follow recommended practices taking flammability hazards into account. The following procedure is recommended: •...
  • Page 160 Serviceman warnings and check it. 11.18 Labelling The appliance must be labelled to indicate that it has been decommissioned and emptied of refrigerant. The label must be dated and signed. Make sure that labels indicating flammable refrigerant content are affixed to the appliance.

  • Page 161: Maintenance

    To ensure optimal availability of the unit, a series of checks and inspections must be carried out periodically on both the unit and the electrical connections. These maintenance procedures must be carried out by your local Clivet technician. ELECTROCUTION DANGER –...
  • Page 162 Maintenance The checks described should be carried out at least once a year by a qualified technician. See chapter “6. Water connections” on page 36 “11.1 Controls in the area” on page 156. Document the glycol concentration and pH value of the system at least once a year.

  • Page 163: Troubleshooting

    Troubleshooting 13. Troubleshooting This section contains useful information for diagnostics and correcting certain problems that may occur in the unit. Diagnostic procedures and associated corrective actions can only be carried out by the local technician. General guidelines Before starting the troubleshooting procedure, visually inspect the unit for any obvious defects, e.g. loose connections or faulty electrical connections.
  • Page 164 Troubleshooting The unit is switched on but the compressor does not start (for room heating or domestic hot water heating) Possible causes Corrective action If the water temperature is low, the system first uses the backup heater to reach the minimum required temperature (12°C). The unit should start outside •...
  • Page 165 Troubleshooting The heat pump in DHW mode stops working but the setpoint is not reached, the room heating requires heat but the unit remains in DHW mode Possible causes Corrective action The heat pump will remain in DHW mode until either t_DHWHP_MAX or the TBH or AHS not available setpoint is reached.
  • Page 166 Troubleshooting It is not possible to switch immediately from DHW mode to heating mode Possible causes Corrective action • Set t_DHWHP_MAX to the minimum value, suggested value is 60min • If the circulation pump outside the unit is not controlled by the unit, try Heat exchanger for room connecting it to the unit.

  • Page 167: Error Codes

    Troubleshooting 13.2 Error codes When a safety device is activated, an error code is displayed on the user interface. The following table contains a list of possible errors and their corrective actions. Reset the safety device by switching the unit off and on again. If the reset procedure fails, contact your local dealer.
  • Page 168 Troubleshooting Error Malfunctioning Cause of the problem and corrective action code or protection Check that all shut-off valves in the water circuit are fully open. • Check that the water filter is clean. • See paragraph “6.7 Filling / topping up with water” on page •...
  • Page 169 Troubleshooting Error Malfunctioning Cause of the problem and corrective action code or protection Error of the plate heat • The T2 sensor connector is loose. Reconnect it. exchanger inlet temperature • The T2 sensor connector is wet or contains water. Expel the sensor (T2) on the water and dry the connector.
  • Page 170 Troubleshooting Error Malfunctioning Cause of the problem and corrective action code or protection • There is no refrigerant in the system. Charge with refrigerant to the required volume. • In heating or hot water mode, the external heat exchanger is dirty or clogged.
  • Page 171 Troubleshooting Error Malfunctioning Cause of the problem and corrective action code or protection • The unit's power supply voltage is low, increase it to the required value. • The space between the units is too narrow for heat exchange. Increase the space between units. •...
  • Page 172 Troubleshooting Error Malfunctioning Cause of the problem and corrective action code or protection Compressor inverter module fault. Low voltage BUS protection of the inverter module. High voltage BUS protection of the inverter module. Check: • 1. compressor working pressures. MCE protection. •...
  • Page 173 EGALE APPRESENTANTE CLIVET S.P.A. - Via Camp Lonc, 25 - Z.I. VILLAPAIERA - 32030 FELTRE (BL) – ITALIA Cap. Soc. Eur 20.000.000 i.v. – C.F. e reg.Impr. BL n°.00708410253 – R.E.A. n°.66577 –P.I./ VAT :IT 00708410253 Tel. +39 0439 3131 - Fax +39 0439 313300 – Sito Web : www.clivet.it...
  • Page 174 32032 Feltre (BL) - Italy Tel. +44 02392 381235 - Dubai, UAE cial –I, Enquiries@Clivetgroup.co.uk Tel. +39 0439 3131 - info@clivet.it Kohinoor City, Old Premier Compound, Off Tel.+971 (0) 4501 5840- info@clivet.ae LBS Marg, Kirol Road, Kurla West, Mumbai Maharashtra 400070, India...

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