Kaysun Aquantia KHP-MO HT Installation, Operation And Maintenance Manual
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Kaysun Aquantia KHP-MO HT Installation, Operation And Maintenance Manual

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INSTALLATION, OPERATION AND
MAINTENANCE MANUAL
KHP-MO 4 DVP
KHP-MO 6 DVP
KHP-MO 8 DVP
KHP-MO 10 DVP
Original instructions.
All the pictures in this manual are for illustrations purpose only.
Aquantia KHP-MO HT
KHP-MO 12 DVP
KHP-MO 14 DVP
KHP-MO 16 DVP
KHP-MO 12 DTP
KHP-MO 14 DTP
KHP-MO 16 DTP
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Summary of Contents for Kaysun Aquantia KHP-MO HT

  • Page 1 INSTALLATION, OPERATION AND MAINTENANCE MANUAL Aquantia KHP-MO HT KHP-MO 4 DVP KHP-MO 12 DVP KHP-MO 12 DTP KHP-MO 6 DVP KHP-MO 14 DVP KHP-MO 14 DTP KHP-MO 8 DVP KHP-MO 16 DVP KHP-MO 16 DTP KHP-MO 10 DVP Original instructions.
  • Page 2 For ground installation and flat roof clearance – single unit General Obstacle over the top No obstacle over the top 4-10 kW (mm) Unit height + B ≥ 500 ≥ 500 ≥ 100 * ≤ 500 ≥ 500 ≥ 1 000 ≥...
  • Page 3 Clearance between units for cascade application installation 4-10 kW (mm) ≥ 600 ≥ 2 500 ≥ 500 12-16 kW ≥ 600 ≥ 3 000 ≥ 500 For the clearance in other directions, refer to the preceding diagrams. WARNING Read the safety precautions before installation.

  • Page 4: Table Of Contents

    CONTENTS 1 SAFETY PRECAUTIONS 2 GENERAL INTRODUCTION 2.1 Documentation 2.2 Validity of the instructions 2.3 Unpacking 2.4 Accessories of the unit 2.5 Transportation 2.6 Parts to be removed 2.7 About the unit 3 SYSTEM DESIGN 3.1 Capacity and load curve 3.2 DHW tank (supplied by the user) 3.3 Room thermostat (supplied by the user) 3.4 Solar kit for dhw tank (supplied by the user)
  • Page 5 8.3 Wiring 8.4 Mounting 9 COMPLETION OF INSTALLATION 10 CONFIGURATION 10.1 Check before configuration 10.2 Configuration 10.3 Operation settings 11 COMMISSIONING 11.1 Test run for the actuator 11.2 Air purge 11.3 Test run 11.4 Check of the minimum flow rate 12 HAND-OVER TO THE USER 12.1 Energy saving tips 12.2 Additional operation reference...

  • Page 6: Safety Precautions

    1 SAFETY PRECAUTIONS General This appliance employed A3 flammable refrigerant Observe the basic safety regulations before starting R290. work and operation. The appliance shall be stored so as to prevent mechanical damage from occurring. Meaning of hazard severity panels Symbols DANGER This symbol shows that Indicates a hazard with a high level of risk which,...

  • Page 7: Detection Of Flammable Refrigerants

    Information on servicing – marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be ① General corrected; CAUTION – refrigerating pipe or components are installed in a position where they are unlikely to be exposed to any substance which can corrode refrigerant containing Servicing shall...

  • Page 8: Charging Procedures

    Refrigerant removal and circuit evacuation 1) Become familiar with the equipment and its operation. 2) Isolate system electrically. When breaking into the refrigerant circuit to make repairs 3) Before attempting the procedure, ensure that: – or for any other purpose – a) mechanical handling equipment is available, if conventional procedures shall be used.

  • Page 9: Intended Use

    Intended use Regulations to be observed There is a risk of injury to the user or others, or of damage to 1)National installation regulations. the product and other property in the event of improper or 2)Statutory regulations for the prevention of accidents. unintended use.

  • Page 10: Working On The System

    Working on the system Check the refrigerant circuit for leaks. Ensure very good ventilation especially in the floor Switch off the power supply for the unit (including all area and maintain this for the duration of the work. affiliated parts) at a separate fuse or mains isolator. Secure the area surrounding the work area.

  • Page 11: Installation General

    NOTE DANGER Hydraulic components freeze during Open flames, fires, open ignition refrigerant removal. Drain heating water from the sources and smoking are prohibited. heat pump beforehand. DANGER DANGER Damage to the refrigerant circuit can cause refrigerant to enter the hydraulic system. After Inflammable matters are completion of the work, vent the hydraulic prohibited.
  • Page 12 Safety instructions for operating What to do if the outdoor unit ices up the system CAUTION What to do if refrigerant leaks A build-up of ice in the condensate pan and in WARNING the fan area of the outdoor unit can cause damage to the equipment.

  • Page 13: General Introduction

    If electrical appliances are disposed of in landfills or Disposal dumps, hazardous substances can leak into the This equipment uses flammable refrigerants. The groundwater and get into the food chain, damaging disposal of the equipment must comply with national your health and well-being. regulations.

  • Page 14: Unpacking

    2.3 Unpacking ① ② Accessories box ③ ④ Hollow plate (For protection purposes, remove it after unit installation) Accessories box For the accessories box, see 2.4.1 Accessories supplied with the unit for more details. NOTE 8-16 kW units are illustrated. All units apply to the same principle. 2.4 Accessories of the unit Thermistor 2.4.1 Accessories supplied with the unit...

  • Page 15: Transportation

    2.4.2 Available options Pass the transport straps through the holes on the left and right sides of the pallet properly. Besides the standard supplied unit, all possible options of the unit can be found in Annex E. Available accessories. No pallet under the unit: The transport straps can be fitted into the dented 2.5 Transportation position at the base frame that are made specifically...

  • Page 16: About The Unit

    2.7 About the unit 2.7.1 Overview The unit applies to heating, cooling, and DHW scenarios. It can be used together with fan coil units, floor heating devices, low-temperature high-efficiency radiators, domestic hot water tanks, and solar kits. The backup heater can increase the heating capacity at extremely low ambient temperatures. It serves as a backup heating source in case of heat pump failure or freeze protection of the water piping out side in winter.

  • Page 17: Control Board

    Explanation Code Assembly Unit Automatic air purge valve Automatically removes the remaining air from the water loop. Provides additional heating capacities when the heating capacity of the heat pump is insufficient Backup heater (optional) due to low outdoor temperature, and protects the external water pipes from freezing. Expansion vessel Balances the water system’s pressure.
  • Page 18 Explanation Order Port Stamp Order Port Stamp Explanation CN60 HEAT2 Reserved 0~10V Output port for 0-10V 0-5 V DC CN41 HEAT1 Reserved 230 V AC Control port for room thermostat (heating mode) 0-5 V DC CN31 CN40 OUT1 OUT1 Power port for room thermostat 230 V AC 0-5 V DC CN62...
  • Page 19 2) 12/14/16 kW (1Ph) CN22 CN25 BOARD H-PRO CN32 CN12 5V R T Gnd 12V RY3 nop N_IN CN2 L_IN CN1 Explanation Port voltage Order Port Stamp Power output U of inverter module to compressor Above 156 V DC (varying according to frequency) Power output V of inverter module to compressor Above 156 V DC (varying according to frequency) Power output W of inverter module to compressor...
  • Page 20 Explanation Port voltage Order Port Stamp Power Input port L1(CN2) Rated phase-to-phase 380 V AC Power Input port L2(CN3) Rated phase-to-phase 380 V AC Power Input port L3(CN4) Rated phase-to-phase 380 V AC Earthing Functional earthing CN701 Compressor connection port U(CN701) Phase-to-phase 46-460 V AC CN702 Compressor connection port V(CN702)

  • Page 21: Operating Range

    1-phase IBH CN52 CN17 IBH1 IBH2 GND IA IB TRANS OUT CN22 Order Port Code Port voltage Explanation IBH1 IBH2 GND IA IB IBH control and feedback signal port 0-12 V DC CN52 CN17 TRANS OUT Linear transformers output low voltages 9-13.5 V AC CN22 Power input of IBH control board...

  • Page 22: System Design

    In DHW mode, the product works at an outdoor ①Heat pump capacity temperature of -25 °C to 46 °C ②Required heating capacity (site-dependent) ③Additional heating capacity provided by backup heaters For further details, consult with your supplier. 3.2 DHW tank (supplied by the user) A domestic hot water (DHW) tank(with or without a booster heater)can be connected to the unit.

  • Page 23: Additional Expansion Vessel And Water Volume

    3.6 Additional expansion vessel and water volume The units are equipped with an expansion vessel of 8L(effective volume is 5 L, use effective volume for calculation) that has a default pre-pressure of 1.5 bar. When the capacity of the integrated expansion vessel is insufficient for the system due to high water volume, an additional expansion vessel (supplied by the user) is needed.

  • Page 24: Circulation Pump

    NOTE It is recommended to install an expansion vessel for the tapping water side. 3.7 Circulation pump The relationship between the external static pressure (ESP) and the water flow rate is shown as follows: 4-6 kW Without IBH With IBH Flow rate (m Flow rate (m ESP (kpa)

  • Page 25: Thermistor

    NOTE Installing the valves in wrong position can damage the circulation pump. CAUTION If it is necessary to check the running status of the pump with the unit powered on, please do not touch the internal electronic control box components to avoid electric shock. 3.8 Thermistor Table 3-1 lists the temperature sensor in 2.4 Accessories of the unit (the temperature sensor applied in the water loop).
  • Page 26 3.9.1 Controlled through the wired controller You can set the water temperature, room temperature, and double-zone control on the wired controller. Three options: WATER FLOW TEMP, ROOM TEMP, DOUBLE ZONE (refer to 10.2.5 Temp. type setting). Single-zone control Indoor Outdoor FHL1 FHL2 FHLn...
  • Page 27 2) The AHS is set to be valid for heating and DHW modes. In heating mode, AHS control is the same as item 1) listed above; In DHW mode, AHS will be turned on automatically when the initial domestic water temperature T5 is too low or the target domestic water temperature is too high at low ambient temperature.
  • Page 28 Space heating The general control logic of the unit is same as Single-zone control. SV3 and Pump_C operates when Zone2 is ON. Zone 2 cannot operate in cooling mode. The domestic water tank, AHS (auxiliary heat source), TBH (tank booster heater), and solar control can be connected. The control method is the same as what is described in the above section.
  • Page 29 Control through mode setting Indoor Outdoor FCU1 FCU2 FCUn FHL1 FHL2 FHLn Code Component/unit Code Component/unit Main unit Shut-off valve Drainage valve (supplied by the user) Wired Controller Collector/distributor Balance tank (supplied by the user) Bypass valve (supplied by the user) Automatic air purge valve SV2: 3-way valve (supplied by the user）...
  • Page 30 Double-zone control Indoor Outdoor RAD.1 ZONE1 RAD.2 RAD.n ZONE2 23.2 23.1 Modbus FHL1 FHL2 FHLn Code Component/unit Code Component/unit Main unit Collector/distributor (supplied by the user) Wired controller Bypass valve (supplied by the user) Balance tank (supplied by the user) Mixing station (supplied by the user) SV3: Mixing valve (supplied by the user) Automatic air purge valve...

  • Page 31: Cascade System

    3.9.3 Cascade system Component/unit Component/unit Component/unit Pump_O: outside circulation pump TBH: domestic hot water tank (supplied by the user) booster heater Pump_S: solar pump Coil 1, heat exchanger for heat (supplied by the user) pump Tsolar: solar temperature sensor Coil 2, heat exchanger for solar Wired controller (optional) energy...
  • Page 32 Only the master unit (1.1) can operate in DHW mode. T5S is set on the wired controller (2). In DHW mode, SV1(3) remains ON. When the master unit operates in DHW mode, the slave units can operate in space cooling/heating mode. Heating mode of slave units All slave units can operate in space heating mode.

  • Page 33: Safety Zone

    4 SAFETY ZONE A Safety zone Corner positioning of the outdoor unit, left The refrigerant circuit in the outdoor unit contains easily flammable refrigerant in safety group A3 as described in ISO 817 and ANSI/ASHRAE Standard 34. Therefore, a safety 2 400 mm zone is defined in the immediate vicinity of the outdoor unit, in which special requirements apply.

  • Page 34: Installation Site

    Noise impact 5.2.2 Precautions for installation on a flat roof Select an installation site that is as far away from Only install the product in a building with a solid living rooms and bedrooms as possible. construction structure and that has cast concrete ceilings Please note the noise emissions.

  • Page 35: Unit Mounting

    Add a gravel bed between and beside the strip This drain hole is foundations (2) to divert the condensate. covered by a rubber Installation on a solid ground plug. If the small drain hole cannot In case of installation on a solid ground such as concrete, meet the drainage create a concrete strip foundation comparable to what is requirements,...

  • Page 36: In Cold Climates

    The downpipe must go into a sufficiently large gravel The drain plug in the accessory pack cannot bend to bed so that the condensate can trickle away freely. another direction. For this, use a hose to guide the condensate into a sewer, pump sump or soakaway NOTE through a gully, balcony run-off or roof run-off.

  • Page 37: Hydraulic Installation

    6 HYDRAULIC INSTALLATION 6.1 Preparations for installation NOTE In case of plastic pipes, make sure they are fully oxygen-tight according to DIN 4726. The diffusion of oxygen into the piping can lead to excessive corrosion. 6.1.1 Minimum water volume a – Top cover b - Schrader valve Verify that the total water volume in the installation is at 6.1.4 Requirements for third-party tanks...
  • Page 38 Requirements CAUTION NOTE Incorrect direction of the water outlet and inlet The pipe inside must be clean. can cause unit malfunction. Hold pipe downwards when Do not apply excessive force when connecting removing burrs. the pipes provided on the site, and make sure the Cover the pipe end when inserting the pipe pipes aligned...

  • Page 39: Water

    Domestic hot water Particular attention must also be paid to “blind spots” For the installation of the domestic hot water tank where a lot of dirt can accumulate due to the reduced (supplied on the site), refer to the specific manual of the water flow.

  • Page 40: Filling Domestic Hot Water Tank With Water

    If the outdoor ambient temperature is higher than 30 °C Do not fasten the black and the humidity is higher than RH 80 %, the thickness of plastic cover on the vent the sealing materials should be at least 20 mm to avoid valve at the topside of condensation on the surface of the seal.
  • Page 41 Types of glycol 6.7.3 About freeze protection valves (supplied by the user) The types of glycol that can be used depend on whether the system contains a domestic hot water tank: NOTE Then Do NOT install freeze protection valves, if glycol The system contains a Only use propylene is added to the water.

  • Page 42: Check Of Water Loop

    ② ① ④ Keep dry ③ NOTE Rotate the flow switch counterclockwise to remove it. Dry the flow switch completely. 6.8 Check of water loop ⑥ The conditions below should be met before installation: The maximum water pressure is lower than or equal to 3 bar.
  • Page 43 Make sure no external pressure is applied to the terminal connections. The field wiring must be carried out in accordance with the wiring diagram supplied with the unit and the instructions given below. Be sure to use a dedicated power source, instead of a power source shared by another appliance.Earth the unit properly, including the wired controller.

  • Page 44: Overview Of Electrical Wiring

    7.3 Overview of electrical wiring The illustration below gives an overview of the required field wiring among different parts. CN66 CN31 1OFF 2OFF 3OFF AHS1 AHS2 X/HA Y/HB 14 15 16 IBH2 IBH1 C1 C1 CN11 CN30 Main f ( t c i t Wired Controller Description...

  • Page 45: Electrical Wiring Guidelines

    7.4 Electrical wiring guidelines 7.4.1 Field wiring guidelines Most field wiring of the unit is to be made on the terminal block inside the switch box. To gain access to the terminal block, remove the switch box service panel. Fix all cables with cable ties. The backup heater requires a dedicated power circuit.

  • Page 46: Tightening Torque

    Backup heater Outdoor Unit Pow er Current System Voltage Min. Max. TOCA 13.5 13.5 3 kW 1-PH 220-240 3 kW 3-PH 380-415 6 kW 3-PH 380-415 9 kW 3-PH 380-415 13.5 13.5 MCA: min. circuit current. (A) TOCA: total over current (A) MFA: max.

  • Page 47: Connection With Power Supply

    Circular wiring 7.4.4 Back plate layout for wiring terminal 4-6 kW Insulation casing Power cord Figure 7.1 : Copper wire 8-16 kW Proper power wiring connections Figure 7.2 ①②③ For high voltage wiring. 7.5.2 Wiring of main power supply ④ For low voltage wiring.
  • Page 48 3 phase without backup heater. 1 phase without backup heater. Main power supply Main power supply CAUTION CAUTION Leakage protection switch must be installed. Leakage protection switch must be installed.
  • Page 49 1 phase with backup heater. 3 phase with backup heater. L1 L2 L3 N L1L2 L3 Main power supply Main power supply Backup heater power supply Backup heater power supply CAUTION Leakage protection switch must be installed. CAUTION Leakage protection switch must be installed.

  • Page 50: Connection Of Other Components

    7.5.3 Wiring of backup heater power supply (optional) Refer to the illustration above for the wiring. CN11 CAUTION To ensure the unit is fully earthed, always connect the backup heater power supply and the earth cable. This appliance which connect 1-phase 3 kW backup heater can be connected only to a supply with system impedance no more than 0.465 Ω.
  • Page 51 7.6.1 Wiring of additional heat source Only for the type shown as below. control (AHS) Neutral AHS1 AHS2 Phase (close ) CN11 Phase (open ) SV1: 1ON 1OFF CN11 FUSE Power supply 7 5 3 1 Additional heat source The wiring between the switch box and the back plate is shown in 7.5.2 Wiring of main power supply.
  • Page 52 Additional circulation pump P_o: SV3: 3ON 3OFF CN11 CN11 Power supply 7 5 3 1 Voltage 220-240 V AC Maximum running current (A) Minimum wire size (mm 0.75 Solar energy pump P_s: Control port signal type Type 2 NOTE C1 is for the neutral conductor . CN11 7.6.3 Wiring of additional pumps Zone 2 pump P_c:...
  • Page 53 DHW pump P_d: Voltage 220-240 V AC Maximum running current (A) Minimum wire size (mm 0.75 Control port signal type Type 2 CN11 7.6.5 Wiring of tank booster heater (TBH) CN11 Power supply 7 5 3 1 Power supply Voltage 220-240 V AC 7 5 3 1 Maximum running current (A)
  • Page 54 7.6.6 Wiring of external IBH box Voltage 220-240 V AC NOTE Maximum running current (A) Minimum wire size (mm 0.75 see installation manual of external IBH box. If the DIP switch corresponding to the backup Control port signal type Type 2 heater is set to INTERNAL (refer to the Wiring Diagram), C3 or C4 fault would appear after backup heater running.
  • Page 55 The thermostat cable can be connected in three ways (as described in the figures above) and the specific connection method depends on the application. Method A（Mode set control） RT can control heating and cooling individually. When the hydraulic module is connected with the external temperature controller, ROOM THERMOSTAT is set to MODE SET on the user interface: A.1 When “CL”...
  • Page 56 7.6.8 Wiring of solar energy input 7.6.10 Wiring of smart grid signal (low voltage) The unit has a smart grid feature, and there are two ports on the PCB to connect SG signals and EVU signals as below: SMART GRID NOTE CLOSE: SHUT DOWN To utilize smart grid function, the DHW mode...

  • Page 57: Cascade Function

    7.7 Cascade Function Slave unit Master unit Please use shielded wires and make sure they are well earthed. T1 T2 H1 H2 H1 H2 H1 H2 ..Master unit Slave unit 1 Slave unit 2 Slave unit x Only the last IDU requires an additional build-out resistor at H1 and H2.

  • Page 58: Connection For Other Optional Components

    Power supply Circuit breaker Manual switch Distribution Box ..7.8 Connection for Other Optional Components 7.8.1 Wiring of drainage pipe heating tape Heating tape For the drainage pipe heating tape, the power shall not exceed 40 W. Working current is up to 200 mA, supply voltage 230 VAC. NOTE Use tie wraps To prevent refrigerant or insects from entering into the electrical control box and causing fire,...

  • Page 59: Installation Of Wired Controller

    8 INSTALLATION OF WIRED CONTROLLER CAUTION The general instructions on wiring in previous chapters should be observed. The wired controller must be installed indoors and kept away from direct sunlight. Keep the wired controller away from any ignition source, flammable gas, oil, water vapor, and sulfide gas. To avoid electromagnetic disturbance, keep the wired controller at a proper distance from electric appliances, such as lamps.

  • Page 60: Mounting

    Route Bottom-side wiring out X2/ HA Lower-side Place of lower-side wire outlet wire outlet DETAIL A SCALE 2:1 Inside wall wiring (with an 86-type box) Inside wall wiring (without an 86-type box) Electrical box Wall hole and wiring hole 46 mm Diameter: Φ...
  • Page 61 Adjust the length of the plastic bolt in the accessory box to make it suitable for installation. Fix the wired controller’s bottom cover to the wall through the screw bar by using cross head screws. Make sure the bottom cover is set flush on the wall. Screw hole on the wall;...

  • Page 62: Completion Of Installation

    9 COMPLETION OF INSTALLATION DANGER Risk of electrocution. Risk of burning. NOTE The illustrations below are for 8-16 kW units. The principle is the same for 4-6 kW units. Tightening torque 4.1 N•m ⑤ ⑥ ① ② ③ ④ 10 CONFIGURATION The unit should be configured by an authorized installer to match the installation environment (outdoor climate, installed options, etc.) and meet the user demand.

  • Page 63: Configuration

    After powering on the unit, check the following items: Upon power-on of the unit, nothing is displayed on the wired controller: Check the following abnormalities before diagnosing possible error codes. - Wiring connection issue (power supply or communication signal). - Fuse failure on PCB. Error code “E8”...

  • Page 64: Cooling Setting

    10.2.2 Cooling setting When Room temp. is enabled, the temperature curve for the room temperature control zone is enforced, and the set temperature of the room temperature control zone Cooling setting can still be adjusted. The type of the temperature curve and the temperature offset can be set.

  • Page 65: Special Function

    Refer to 10.2.1 DHW setting for the operation method. Preheating for floor 1) When EnSwitchPDC is set to NO, T4_AHS_ON can Provide mild heat to the underfloor water piping for initial be set manually. When EnSwitchPDC is set to YES, heating operation to diminish the risk of damage to the T4_AHS_ON cannot be set manually.

  • Page 66: Common Setting

    Refer to 10.2.1 DHW setting for the operation method. The first line is the status indicator. Grey means it is off, 10.2.15 Cascade setting and green means it is on. t_Dryup is the time for which the unit rises the temperature.

  • Page 67: Operation Settings

    10.3 Operation settings Title Code State Default Minimum Maximum Unit interval Enable or disable DHW mode: 0=NO, DHW mode 1=YES Enable or disable the disinfect mode: Disinfect 0=NO, 1=YES Enable or disable DHW priority mode: DHW priority 0=NO, 1=YES Enable or disable DHW pump mode: Pump_D 0=NO, 1=YES Enable or disable DHW priority time setting:...
  • Page 68 The refresh time of climate-related curves t_T4_Fresh_H Hours in heating mode The maximum ambient operating T4HMAX °C temperature in heating mode The minimum ambient operating T4HMIN °C temperature in heating mode The temperature difference for starting the dT1SH °C unit (T1) Heating The temperature difference for starting the dTSH...
  • Page 69 Maximum set temperature of additional MAX-SETHEATER °C heating source Minimum set temperature of additional MIN-SETHEATER °C heating source The voltage corresponding to the maximum set temperature of additional MAX-SIGHEATER heating source The voltage corresponding to the minimum MIN-SIGHEATER set temperature of additional heating source Enable or disable the TBH (Tank booster heater) function: 0=NO,...

  • Page 70: Commissioning

    HMI address Set the HMI address code for BMS for BMS address Upper computer stop bit: 1=STOP setting Stop BIT BIT1, 2=STOP BIT2 The time for which the compressor has run t_Delay pump Minutes 20.0 before startup of the pump t1_Antilock pump The pump anti-lock interval Hours...

  • Page 71: Air Purge

    What - Actuator List Note Name Three-way valve 2 Three-way valve 3 Integrated circulation pump PUMP_I PUMP_O Additional circulation pump(for Zone 1) Zone 2 pump PUMP_C Internal backup heater Additional heat source Three-way valve 1 Invisible if DHW is disabled DHW pump PUMP_D Invisible if DHW is disabled...

  • Page 72: Check Of The Minimum Flow Rate

    NOTE In performance test, the target temperature is preset and cannot be changed. If the outdoor temperature is outside the range of operating temperature, the unit may not operate or may not deliver the required capacity. In circulated pump operation, If the flow rate is out of recommended flow rate range, please make proper change of the installation, and ensure that the flow rate in the installation is guaranteed in all conditions.
  • Page 73 12.2.2 Schedule What Make unit operation plans. This function is based on the current time displayed on the HMI. Make sure the time is correct. Conflicts and operation priority 1) A daily schedule and a weekly schedule can work simultaneously. 2) For all schedules, timers (if more than one) for the same zone or appliance must be different, and the operation mode of Zone 1 and Zone 2 in the same time setting must be the same.
  • Page 74 Illustration of all 8 curves Standard curve - Heating 80.0 75.0 70.0 65.0 1-T1S 60.0 2-T1S 55.0 3-T1S 50.0 4-T1S 45.0 5-T1S 40.0 35.0 6-T1S 30.0 7-T1S 25.0 8-T1S 20.0 ≥20 Ambient temp. For cooling (RAD – radiator application, FLH – For cooling (FCU –...
  • Page 75 Illustration of all 8 curves Tank heater The tank heater and backup heater cannot operate simultaneously. The most recent setting is valid while the previous setting becomes invalid For instance, when the backup heater is valid and running, if the tank heater is turned off, the backup heater stops running.

  • Page 76: Troubleshooting

    13 TROUBLESHOOTING This section provides useful information about diagnosing and correcting certain problems that may occur to the unit. 13.1 General Guidelines Before starting the troubleshooting procedure, visually inspect the unit and look for obvious defects such as loose connections or defective wiring. When a safety device is activated, stop the unit and find out the cause of such activation before resetting the safety device.

  • Page 77: Error Codes

    Symptom 6: insufficient space heating capacity at low outdoor temperature. POSSIBLE CAUSE TROUBLESHOOTING • Check whether the IBH function is enabled. • Check whether the thermal protector of the backup heater has been activated. Backup heater not • Check whether the booster heater is running. The backup heater and booster heater can not activated operate simultaneously.

  • Page 78: Maintenance

    14 MAINTENANCE Regular checks and inspections at certain intervals are required to guarantee the optimal performance of the unit. 14.1 Safety precautions for maintenance DANGER Risk of electrocution. WARNING Please note that some parts of the electric component box are hot. Do not rinse the unit.

  • Page 79: Service Information

    15 SERVICE INFORMATION No live electrical components and wiring can be exposed during the system charging, recovery or 15.1 Label for refrigerant purging. presence Earth bonding should be continuous. 15.5 Repair of sealed components Equipment should be provided with a label stating that it has been de-commissioned and emptied of refrigerant.
  • Page 80 should be available and work properly. Hoses should be refrigeration knowledge and are competent for complete with leak-free disconnection couplings and in handling R290 refrigerant. good conditions. Before using the recovery equipment, check and verify that it works properly and has been 1) Removal and evacuation properly maintained, and that any associated electrical When breaking into the refrigerant circuit for repair or...

  • Page 81: Technical Data

    17. TECHNICAL DATA 17.1 General 1-phase 1-phase 1-phase 3-phase Model 4 kW 6 kW 8 kW 10 kW 12 kW 14 kW 16 kW 12 kW 14 kW 16 kW Nominal capacity Refer to the Technical Data Dimensions H×W×D 717 x 1 299 x 426 mm 865 x 1 385 x 523 mm 865 x 1 385 x 523 mm 865 x 1 385 x 523 mm...

  • Page 82: Electrical Specifications

    17.2 Electrical Specifications 1-phase 4/6/8/10/12/14/16 kW 3-phase 12/14/16 kW Model Power Supply Standard unit Nominal Running Current See “ 7.4.1 Field wiring guidelines” Power Supply Backup heater Nominal Running Current 17.3 Piping diagram 4-6 kW units (standard) Outlet H _ S Inlet L _ S Cooling...
  • Page 83 8-16 kW units (standard) Outlet H _ S Inlet L _ S Cooling Heating 11 12 Description Description Item Item Compressor Electronic expansion valve Temperature sensor (plate heat exchanger inlet Temperature sensor (compressor discharge) refrigerant: cooling) Liquid reservoir Temperature sensor (compressor suction) High pressure switch Temperature sensor (water inlet) High pressure sensor...
  • Page 84 4-16 kW (With IBH) Outlet H _ S Inlet L _ S Cooling Heating 11 12 Description Description Item Item Compressor Electronic expansion valve Temperature sensor (plate heat exchanger inlet Temperature sensor (compressor discharge) refrigerant: cooling) Liquid reservoir Temperature sensor (compressor suction) High pressure switch Temperature sensor (water inlet) Heat tape (plate heat exchanger)

  • Page 85: Annex

    ANNEX Annex A. Menu structure (wired controller) Weekly schedule Schedule 1 Menu Mode (2) Schedule 2 Mode Heating Schedule 3 Schedule Cooling Schedule 4 Weather temp. settings Auto DHW settings (1) Holiday away Settings Current state Unit status From Error info. Until Schedule Heating mode (1)
  • Page 86 For serviceman 7 Other heating source For serviceman 1 DHW setting 7.1 IBH function 1 DHW setting 1.1 DHW mode 7.2 dT1_IBH_ON 2 Cooling setting 1.2 Disinfect 7.3 t_IBH_Delay 3 Heating setting 1.3 DHW priority 7.4 T4_IBH_ON 4 Auto mode setting 1.4 Pump_D 7.5 P_IBH1 5 Temp.

  • Page 87: Annex B. User Settings Parameters

    Annex B. User settings parameters Setting Code Definition Default Minimum Maximum Unit interval 6.1 Mode & Temperature set Operation mode setting 1=Auto, Operation mode Mode 2=Cooling, 3=Heating For FCU cooling °C Water outlet For FLH / RAD cooling °C temperature For FLH heating °C (Zone 1)
  • Page 88 Enablement 0=inactive, 1=active Schedule1 - Schedule4 /　 Schedule1 - Schedule4 Enablement 0=inactive, 1=active (if all Sunday / Monday / /　 the date is active, then display ‘Every Tuesday / Wednesday / day’) Thursday / Friday / Saturday Command1-Command4 Enablement 0=inactive, 1=active /　...
  • Page 89 For FCU cooling °C For FLH / RAD cooling °C For FLH heating °C Zone 2 holiday timer °C For FCU / RAD heating temperature -timer1-timer6 Temp. of the timer Room heating set 　 °C temperature Ta Room cooling set °C temperature Ta DHW holiday timer...
  • Page 90 Enablement 0=inactive, 1=active Temperature curve Temperature curve type 0=Standard, Temperature curve type 1=Custom Standard - Temperature Curve for FLH / RAD cooling level Curve for FCU cooling Standard - Temperature Zone 2 cooling set temperature offset of Zone 2 °C offset curve cooling...

  • Page 91: Annex C. Modbus Mapping Table

    Annex C. Modbus mapping table 1) MODBUS PORT COMMUNICATION SPECIFICATIONS Port: RS-485; H1 and H2 are the Modbus communication ports. Communication address: Only one-to-one connection is available for the host computer and wired controller, and the wired controller is a slave unit. The communication address of the host computer and wired controller is consistent with the address of 17.2 HMI Address for BMS (In FOR SERVICEMAN mode).

  • Page 92: Annex E. Terms And Abbreviation

    Annex E. Terms and abbreviation Compressor discharge temperature Compressor Suction temperature Outdoor air temperature Heat exchanger temperature Heat exchanger outlet refrigerant(cooling) temperature Plate heat exchanger inlet refrigerant(cooling) temperature Plate heat exchanger outlet refrigerant(cooling) temperature Tw_in Inlet water temperature Tw_out Outlet water temperature DHW tank temperature Zone 2 water temperature Balance tank temperature...

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