1. Manuals
  2. Brands
  3. Kaisai Manuals
  4. Heat Pump
  5. KHY-12PY3
  6. Installation & service manual

Kaisai KHY-12PY3 Installation & Service Manual

Heat pump air to water r290
Hide thumbs Also See for KHY-12PY3:
Table of Contents

Advertisement

Quick Links

Download this manual
Installation &
service manual
EN
H E AT P U M P A I R T O W AT E R 2 9 0
KHY-12PY3 | KHY-15PY3

Advertisement

Table of Contents
loading

Related Manuals for Kaisai KHY-12PY3

Summary of Contents for Kaisai KHY-12PY3

  • Page 1 Installation & service manual H E AT P U M P A I R T O W AT E R 2 9 0 KHY-12PY3 | KHY-15PY3...
  • Page 3 To ensure proper operation, please read and keep the instruction manual for future reference. W przypadku zagubienia instrukcji obsługi, skontaktuj się z lokalnym dystrybutorem lub odwiedź stronę www.kaisai.com lub prześlij wiadomość email na adres: handlowy@kaisai.com, w celu uzyskania wersji elektronicznej instrukcji.

  • Page 4: Table Of Contents

    Table of Contents 1. Introduction ............6 1.1.
  • Page 5 6. Parameters............73 6.1.

  • Page 6: Introduction

    1. Introduction To ensure customers high quality and reliability of the products, the heat pump is manufactured according to strict design and production standards. This manual contains all necessary information regarding installation, assembly, disassembly, and maintenance. Please carefully read this manual before opening or performing maintenance on the device. The manufacturer of this product is not liable if anyone gets injured or the device gets damaged due to improper installation, assembly, or maintenance not in accordance with this manual.

  • Page 7: Functions

    • A new generation of environmentally friendly refrigerant R290 has been used, which is harm- less to the ozone layer, and the Global Warming Potential (GWP) value for this refrigerant is 3. • Heating in low outdoor temperatures. The optimally designed unit is capable of operating in heating mode even when the ambient temperature drops to -25°C.

  • Page 8: Precautions

    2. Precautions WARNING Service information is intended solely for experienced technicians and is not meant for use by the general public. Products powered by electricity should only be serviced or repaired by experienced professional technicians. Any attempt to service or repair products described in this service informa- tion by individuals other than qualified technicians may result in serious injury or even death.
  • Page 9 Opis ikon Labeling Meaning Prohibition. The icon indicates prohibited actions. Mandatory actions necessary to perform. Follow the description accordingly. CAUTION (including WARNING). Pay attention to what is indicated. Fire Hazard / Flammable Materials No Open Flame Allowed WARNING WARNING Operation Meaning Do not insert fingers or any other objects into the fan and evaporator of the device, as doing so may cause damage.
  • Page 10 Moving and Repairs Meaning In case the heat pump needs to be reinstalled or restarted, it should be advised to be performed by qualified individuals. Improper installation can lead to water leakage, electric shock, injuries, or fire. Moving Do not attempt to repair the device on your own, as it may result in electric shock or fire.

  • Page 11: Important Information Regarding Refrigerant

    Maintenance Meaning Regularly check the substructure on which the heat pump is installed (once a month) to prevent tipping, damage to the device, Checking the and personal injuries. foundation structure Power off the device during cleaning or maintenance. Power off The use of copper or steel inserts as fuses is prohibited.

  • Page 12: Maintenance

    Information Table on Refrigerant Quantity in KHY 12 and 15 kW Units Refrigerant Model Equivalent to tons of CO2 12 kW 0,85 0,0026 15 kW 1,30 0,0039 The refrigerant R290 is flammable and explosive. Installation in environment where there are active or potential sources of ignition is strictly prohibited. 2.3.
  • Page 13 Before the initial operation of the device or after a longer pause, perform the following prepa- rations: (1) Thoroughly inspect and clean the device. (2) Clean the water installation - mesh filter, magnetic separator. (3) Check the water pump, regulating valve, and other equipment of the water installation. (4) Tighten all hose connections.

  • Page 14: Inspection

    2.4. Inspection 2.4.1 Preparation for Inspection and Maintenance WARNING Hazard! Risk of death due to fire or explosion in case of refrigerant leakage! • The work can only be carried out by an authorized and competent person with good knowl- edge of the special properties and hazards associated with the refrigerant R290.
  • Page 15 prepared and stable. Avoid areas with inclines and obstacles that could make transportation difficult. Positioning in the new location: After transporting the heat pump to a new location, ensure that it is placed on a stable surface and is level. Perform a visual inspection to eliminate any damages.

  • Page 16: Technical Information

    3. Technical information 3.1. Accessories Name Shape Quantity User Manual Vibration dampers Screws Signal cable Wired control remote Temperature sensor Drain connector Energy labelling 3.2. Dimensions of units 3.2.1. KHY-12PY3 3.2.1. KHY-12PY3...
  • Page 18 3.2.2. KHY-15PY3...

  • Page 19: Basic Parameters

    3.3 Basic parameters Parameter Unit KHY-12PY3 KHY-15PY3 Power Supply 380 415V/3N~/50Hz 380 415V/3N~/50Hz Heating Mode Operating Range ˚C -25 to +43 -25 to +43 Maximum Heating Fluid ˚C Supply Temperature Quantity of refrigerant R290 0,85 1.30 Sound Power Level dB(A)

  • Page 20: Performance Tables

    Parameter Unit Meaning Ambient °C Temperature Heating Capacity Power Input Coefficient of Performance Leaving Water °C Temperature 3.4.1. KHY-12PY3 KHY-12PY3 FLOW 1100l/h LWT = 35°C LWT = 45°C LWT = 55°C LWT = 65°C 10,7 10,8 11,1 11,5 11,0 10,0...
  • Page 21 Ambient temperature AT, °C Ambient temperature AT, °C...
  • Page 22 KHY-15PY3 FLOW 2200l/h LWT = 35°C LWT = 45°C LWT = 55°C LWT = 65°C 10,5 10,3 10,2 12,0 12,0 10,3 13,3 12,7 11,3 10,4 14,3 13,1 12,1 10,9 15,3 13,5 13,3 11,3 14,7 13,7 12,6 11,9 14,4 14,2 12,3 12,4 15,3 14,6...
  • Page 23 Ambient temperature AT, °C...

  • Page 24: Schematic Diagram Of The Heat Pump's Main Board

    3.6. Schematic diagram of the heat pump’s main board. 485 A 485 B CN19 CN16...

  • Page 25: Schematic Diagram Of The Installation Layout

    3.7. Schematic diagram of the installation layout. The provided schematic diagram is for illustrative purposes only. The heat pump and all other components of the system should be selected and designed by an experienced installer specif- ically for the user’s existing setup. The monoblock heat pump comes equipped with an integrated main circulation pump.
  • Page 26 Code Element Code Element K15:Circulation pump for the Heat pump second circuit Filter Domestic hot water tank Heat exchanger (coil) in the Shut-off valves 12.1 domestic hot water tank Drain valve Check valve K5: Hot water circulation Filling valve pump K9: Three-way switching valve Hot water tap for heating/domestic hot water...

  • Page 27: Unit Inspection

    4. Unit inspection 4.1. Before installation 4.1.1. Proper heat pump selection Selecting the right heat pump for a building is a crucial step that affects the efficiency and per- formance of the heating system. Here are some steps to consider when choosing a heat pump for a building: Heating demand: Accurately assess the heating demand of the building based on its sur- face, thermal insulation, and other characteristics.
  • Page 28 Support in extreme conditions: In situations where the outside temperature is extremely low and the heat pump’s efficiency may be limited, the electric heater increases the possibility of achieving the required level of heat. The heat pump model KHY-12PY3 KHY-15PY3 Heating element power as 6.0kW;400V 6.0kW;400V...
  • Page 29 Mineral content: The boiler water should have low mineral content, such as calcium, magnesi- um, or iron. High levels of these minerals can lead to boiler scaling and reduce the heat pump’s efficiency. Hardness: Water hardness is a measure of the mineral content in the water. Too hard water can cause scaling, which restricts the heat flow in the heat exchanger.
  • Page 30 4.1.5. Flushing the plumbing system The manufacturer requires performing flushing of the hydraulic system and using a corrosion inhibitor. • Chemical cleaning and flushing of the central heating system involve passing a mixture of chemicals through the system to dissolve accumulated deposits. The chemical mixture also contains corrosion inhibitors, which reduce the corrosion rate and limit the deposition of sediment, thereby extending the lifespan of the installation.
  • Page 31 For atypical installations, a buffer tank installation in a series connection is allowed after consultation with the manufacturer. The recommended capacity of the buffer tank is shown in the following table. Model of heat pump KHY-12PY3 KHY-15PY3 Buffer tank capacity 200-300 250-400 4.1.9.

  • Page 32: Installation Location

    Compliance with standards and regulations: The DHW tank should meet applicable standards and regulations concerning water and heating installations. Minimum coil surface areas are provided in the table below: The heat pump model KHY-12PY3 KHY-15PY3 The heat exchange surface area...
  • Page 33 The minimum distance from ignition sources should be at a minimum level (1000mm). Protective zone, installation away from the building. Protective zone in case of locating near the wall. Within the protective zones, there should be no: • Building openings •...
  • Page 34 In the case of strong, constantly blowing winds from the front of the unit, the fan may rotate very fast until it fails. Under normal conditions, the unit should be installed according to the following data: Model A (mm) B (mm) C (mm) D (mm) KHY-12PY3 ≥500 ≥1500 ≥1000 ≥500 KHY-15PY3 ≥500 ≥1500 ≥1000...
  • Page 35 The drawing shows the location of the unit. Preview drawing of the installation of the outdoor unit anchored to the ground. • Prepare a drainage channel around the foundation to divert condensation and any other used water from the vicinity of the unit. •...

  • Page 36: Hydraulic Connections

    4.2.2. Choosing a Location in Cold Conditions To prevent exposure to wind, install the unit with the suction side facing the wall. • Never install the unit in a location where the suction side is facing the wind. • In areas with heavy snowfall, choose a mounting location where the unit will be free from snow. If snow can reach the unit from the side, make sure that the heat exchanger coil does not come into contact with it (if necessary, install a side shield).
  • Page 37 It is crucial to select pipes with a large internal diameter. The recommended values below are arbitrary. The final selection of pipe diameters should be based on hydraulic calculations, and the installer should choose fittings in accordance with their experience and knowledge. KHY-12PY3 Pipe Internal...
  • Page 38 KHY-15PY3 Pipe Internal Flow Line The type Flow rate diameter diameter velocity friction of pipe material (m³) (mm) (mm) (m/s) losses Pa/m Recommendations 50x4,5 0,62 Thin-walled steel 42x1,5 0,68 Copper 42x1,5 0,68 50x6,9 0,78 4.3.2. 3-way (diverting) valve for heating/hot water (DHW) In the case of a KHY heat pump, which is used for both heating and domestic hot water (DHW) pro- duction, a switching valve should be applied based on the heat pump’s operating mode (heating or DHW).

  • Page 39: Electrical Connection

    4.3.4. 2-circuit mixing valve In the case of installations with 2 circuits, it is possible to connect a 2-zone mixing valve to be controlled by the heat pump. To do this, a valve with an electric actuator and 3-point control should be used.
  • Page 40 The wires should be routed in protective conduits or installation channels. The residual current device (RCD) must be fast-acting (trip time <0.1 s) for a differential current of 30 mA. The protection should be selected using the table below. Parameters KHY-12PY3 KHY-15PY3 Power supply 380-415V/3N/50Hz...
  • Page 41 Device power connector 4.4.2. Controller/control panel connection The control panel comes with a communication cable and prepared connectors. Connect the controller to the connector on the side panel of the device according to the diagram.
  • Page 42 Control panel connector 4.4.3. Temperature sensor/thermostat connection The device can be controlled based on different temperatures. By default, the heat pump oper- ates based on the water temperature at the heat pump’s outlet. It is also possible to operate based on the temperature of the circuits (on the water line), buffer (sensor placed in the buffer tank), and room (thermostats connected to the device).
  • Page 43 • Buffer tank temperature sensor The buffer tank temperature sensor allows you to control the operation of the pump by setting pa- rameter H25=2 (see the Parameters section). This sensor is identical to the hot water temperature sensor but connected to terminals 11 and 12 in the connection block. •...
  • Page 44 • Temperature sensor/thermostat for the first zone Depending on the control temperature, you can connect temperature sensor measuring the tem- perature of the water in the first circuit or thermostat for the first circuit to terminals 34 and 35 on the connection block.
  • Page 45 4.4.5. Connection of the 2-Circuit Mixing Valve The mixing valve controls the temperature of the second circuit to the desired value by opening or closing the mixing. Connect the valve to terminals 31, 32, and 33. The device supplies ~230V to terminal 31 when the temperature is too high, opening the valve to increase mixing and lower the temperature.
  • Page 46 4.4.6. Connection of circulation pumps The external circulation pumps are responsible for the heating circulation between the buffer tank and the heat emitters. Circulation pumps with a rated power of 150W can be directly connected to the heat pump. For connecting circulation pump 1 in a single-circuit system, you should use terminals 27 and 28.
  • Page 47 4.4.7. Hot Water Circulation Pump Connection You can connect the circulation pump with a power of 150W directly to the heat pump. To do this, use terminals 18 and 19. After connecting, configure parameter H40 and set the operating hours and days for the circulation pump.

  • Page 48: Preparing The System For Initial Startup

    Terminals 20, 21, 22, and 23 are responsible for the connection. After connecting the heaters, you should configure parameters H18 and R35. When the heaters are turned on (depending on the operating stage), the device will provide a voltage of ~230V at terminals 20 and 23. An exam- ple connection (single-phase heaters) is shown in the diagram below.

  • Page 49: Description Of The Display Interface

    5.1. Description of the display interface Icon Function The power button: when the button is displayed in blue, it indicates the on state, and when touched, it will change color to white and switch to the off state. Screen lock button: You can perform various operations on the display when the lock is open, but you cannot operate the display when the lock is closed.
  • Page 50 Icon Function “Fault” icon will be displayed in case of a device malfunction. “Operating mode” icon means that the device is currently operating in heating + hot water mode. There are five available modes, namely: heating, cooling, hot water, hot water + cooling, hot water + heating. The “Operating mode”...

  • Page 51: Mode Selection Interface

    5.2. Mode selection interface Icon Function Mode selection element that will be highlighted when selected, DHW + Heating indicating that the currently set mode is heating + hot water mode. Mode selection position that will be highlighted when selected, Heating indicating that the currently set mode is heating mode.

  • Page 52: Function Settings Interface

    Mode selection: Touch the “Mode Selection Button” on the main interface to enter the “Mode Selection Interface,” then slide the “Mode Selection Element” to highlight the desired mode. Press the “Confirm” button to save and confirm the mode selection, which completes the mode selection operation. If you press the “Return”...

  • Page 53: Customer Function Interface

    Icon Function System Brightness Button: Allows you to adjust the brightness of the display. Error Display Function Button: Allows you to view error information. One-Touch Rapid Heating Function Button: The icon is displayed only when R35 ≠ 0. Programmer of the Smart Grid mode, temperature, and power. 5.4.

  • Page 54: The Time Function Settings Interface

    Icon Function Customer parameter button. Tap to enter the “Customer parameter interface,” which displays parameters that can be configured. Manual defrost button. Tap to enter the manual defrost function. The button for setting the outdoor temperature compensation curve. Tap to enter the outdoor weather curve setting interface. The unit status button.

  • Page 55: Circulation Of Domestic Hot Water

    Icon Function The “System time setting button” allows you to set the system time. The “Mute timer button” allows you to enable time control for the mute function when the device has a mute function. The “Timer on/off button” allows you to enable time control for turning the device on and off.

  • Page 56: Sg Ready

    5.8. SG Ready To access Smart Grid settings, you need to click on the icon The controller in the heat pump allows it to cooperate with a smart grid. The heat pump can be remotely started and stopped, even in partial load mode. Switching between different operating modes depends on factors such as access to energy from photovoltaic panels or the current ener- gy tariff depending on the time of day.
  • Page 57 Using a single potential-free contact: SG-2 Smart Grid Ready=1 Open Normal mode Closed MODE-4 Displays the current status Illustration serving as an explanation Note: SG-1 is the emergency switch port, and SG-2 is the PV connection port. In normal mode, enabling the electric heater is not allowed.
  • Page 58 Displays the current status Illustration serving as an explanation MODE 1: Stand-by mode. Available only when the heat pump is activated, in sleep mode, the heat pump is in standby mode (operating the same as when turned off after reaching the target temperature), the anti-freezing protection function can still be applied during this time.
  • Page 59 When the heat pump enters sleep mode, anti-freezing protection is still effective to prevent freez- ing of pipes and equipment due to low outside temperature. This means that when the device is in sleep mode, if the outside temperature and the temperature of the pipe installation are lower than the winter anti-freeze protection operation condition, the heat pump will turn on and work with high energy efficiency to generate heat.
  • Page 60 1 – In heating mode: Target working temperature = temperature setting + parameter [SG06] 2. – In cooling mode: Target working temperature = temperature setting + parameter [SG07] 3. – In domestic hot water (DHW) preparation mode: Target working temperature = temperature setting + parameter [SG05] Note: In the case of no demand for domestic hot water (DHW), the heat pump will automatically raise the...
  • Page 61 The information about the modes on the display: The parameters related to the Smart Grid function are described below: Code Parameter Settings 0 - inactive SG01 SG Ready application 1 - one potential-free contact 2 - two potential-free contact SG02 Mode 1 lockout time 0-120 min Power limitation in low sun...
  • Page 62 To set SG Ready parameters: • Go to the “Smart Grid” tab, then the “SG Ready” icon and then “Parameters” • Input password: 79 • The parameter configuration screen is displayed...
  • Page 63 5.8.1. Programmer for Mode, Temperature, and Power After clicking the icon mentioned above, the screen displayed will be as follows: Turning on the programmer. Set the time interval Set the days of the week. Set the desired mode of operation. If you do not want to control the mode, set the “disabled”...

  • Page 64: Multi-Zone Control

    The function allows you to set the operating time, operating mode (heating, cooling, hot water domestic hot water), the set temperature in a given mode and power limitation. You can select on which days of the week the set parameters are to apply. After activating the function, the start screen will display the icon .
  • Page 65 If Z16=0 (temperature curve for zone 1 is inactive), the temperature displayed will be Z06 (target temperature at the outlet in zone 1). If Z16=1 (temperature curve for zone 1 is active), the displayed temperature will be after compensation, which is the target temperature at the outlet. Z02 - Target room temperature in zone 1.
  • Page 66 Display of room temperature for zone 2. In case of sensor malfunction, it will display -.- °C/°F. If Z01=4/5/6/7/8/9, the device is connected to a passive room thermostat or room thermostat, and the device receives a signal. If a command to turn on the device is sent from the thermostat, Zone2: Start will be displayed, otherwise, it will display Zone 2: Stop.
  • Page 67 • The displayed parameters will include settings for controlling. • List of parameters Remarks on the designations: S - temperature sensor T - thermostat P - passive thermostat RT - room temperature WT - water temperature Code Parameter Range 1. Zone 1-S 2.
  • Page 68 Parametr Zakres Target RT for Zone 2 10-35 °C RT Difference for Zone 2 Start 0-10 °C Target WT at the Outlet for Zone 1: R10-R11 °C Target WT at the Outlet for Zone 2: R10-Z15 °C Manual Regulation Coefficient of the Mixing Valve 0-100% (0% for automatic control): 0-100% Mixing Valve Opening Time...
  • Page 69 • Activation of zone 1 Setting Z01=1/4/7 means that zone 2 is inactive. Only zone 1 is active. The status of zone 2 will be displayed as “Not used.” • Activation of zone 2 Setting Z01=3/6/9 means that both zone 1 and 2 are active. Below is a screen showing both zones being active.
  • Page 70 • Activation of zones 1 and 2 Setting Z01=3/6/9 means that both zone 1 and 2 are active. Below is a screen showing both zones being active. 5.9.3. Desired temperatures for zones settings...
  • Page 71 After clicking on Set Temp. depending on the zone, a screen for setting temperatures according to the applied solution (water, room, or heating curve) will appear: Click on the ‘Zone 1 Weather Control’ option to access the temperature curve settings for Zone 1. Click to return to the previous interface.

  • Page 72: Mute Mode

    5.10. Mute mode The “Mute” function affects the operation of the device by reducing the power of the heat pump (fan speed) and providing quieter operation. You can specify the time to activate and deactivate the function, as well as move the buttons below the set times to enable/disable the function. It’s important to note that activating mute mode may result in increased use of additional electric heating when the reduced power of the heat pump is not sufficient to provide adequate heating to the building.

  • Page 73: Failure/Faults

    5.12. Failure/Faults Clicking on the ‘Fault’ icon will open a list of error history as shown below. Servicing the device can only be performed by a qualified and authorized technician. Service procedures are detailed in the ‘Service’ section. 6. Parameters At the first start-up of the heat pump, you should check and configure some operating parameters of the device depending on the entire installation and the components used.
  • Page 74 Code Name Description Range The startup and shutdown and mode used to configure the heat pump are 0-Display Control Mode controlled by the wire controller, or 1-Dry controlled by the emergency switch and Contact mode switch When the heat pump is connected to an external controller through R485, the heat Unit Address pump acts as a slave, and H10 is used to...
  • Page 75 Code Name Description Range 0-No EVI It is used to control whether the heat 1-EVI for pump has the function of vapor-injected Cooling Enable EVI enthalpy gain, which is related to the 2-EVI for configuration of the heat pump itself Heating 3-All EVI It is used to set whether the heat pump has...
  • Page 76 Code Name Description Range Fan Motor Driver It is used to match the fan driver module 0-NO and Comp. Driver and needs to be set according to the 1-YES Intergrated actual configuration of the heat pump ”Compensate set temp = Slope *AT + Offset After the ambient temperature com- Enable Positive...

  • Page 77: Protect

    6.2. Protect Code Name Description Range When the ambient temperature is lower Shutdown Ambient than A03, the heat pump will turn off the -40~10°C compressor and use the auxiliary heat Temp. source to continue heating. It is used to prevent the water tempera- ture from being too low to damage the replacement plate by freezing.
  • Page 78 Code Name Description Range It is used to prevent the water tempera- ture from being too low to damage the replacement plate by freezing. When the Minimum Evaporation water outlet temperature is < A04 and -50~30°C Temp. of Cooling the evaporation temperature is < A25, the heat pump will report anti-freezing protection.

  • Page 79: Fan

    Code Name Description Range Low Pressure of Limit- Pressure at which the compressor 0~20bar ting Frequency frequency will be limited. Specifies the maximum current value Max. Current Value 0~50A drawn by the device. Rated Water Flow Specifies the water flow. 0-9,99m3/h Circulation Pump Speed Regulation of...

  • Page 80: Defrost

    Code Name Description Range Min. Fan Speed in Minimum fan speed during heating. 10~1300r Heating It is used for engineer performance Enable Manual-Con- 0-NO debugging experiments, when F22=1, trol Fan Speed 1-YES the fan speed will be fixed at F23 It is used for engineer performance Rated DC Fan Motor debugging experiments, when F22=1,...
  • Page 81 Code Name Description Range Exhaust Temp. Cor- rection for Defrosting 0~150°C Cycle Correct the defrosting D03 through Defrosting Suction the refrigerant circulation state of the D05-1 0~45bar fluorine system Pressure 1 Defrosting Suction D05-2 0~45bar Pressure 2 The defrosting D03 is corrected through the refrigerant circulation state of the Defrosting Cycle Time fluorine system, and the defrosting...
  • Page 82 Code Name Description Range According to the corresponding relationship between the low pressure and the refrigerant circulation volume Heating Operation of the fluorine system, as well as the Time Before Forced 0~360min ambient temperature, if the time in the Defrosting buffer zone that may have frost and may not have frost is too long, and the time exceeds D13, a defrosting will be forced...
  • Page 83 Code Name Description Range Standard frequency of the compressor during defrosting. If it is detected that the temperature difference between the Defrosting Frequency water inlet and outlet is close to A24, 30~90Hz or the water flow is less than D22, the frequency will be reduced to 50Hz for defrosting.

  • Page 84: Eev

    Code Name Description Range When the heat pump is linked with the external controller, the external control- ler can decide whether to allow the heat Enable Defrosting pump to enter defrosting. When the heat 0-NO Communication in pump initiates a defrosting request, but Cascade the external controller does not allow 1-YES...
  • Page 85 Code Name Description Range For the fluorine system with enthalpy gain, the initial opening of the throttling EVI EEV: Initial Steps device on the enthalpy gain circuit is at 0~500N this opening for a period of time when the enthalpy gain circuit is turned on Control the state of the refrigerant EVI EEV: Target supplemented by the vapor-injected...

  • Page 86: Temp

    Code Name Description Range Segment 2 of EEV E07-2 Reserved function, custom configuration. 0~500N Min. Steps Segment 3 of EEV E07-3 Reserved function, custom configuration. 0~500N Min. Steps Segment 4 of EEV E07-4 Reserved function, custom configuration. 0~500N Min. Steps Segment 5 of EEV E07-5 Reserved function, custom configuration.
  • Page 87 Code Name Description Range After the heat pump reports the water Temp. Diff. Of Exiting outlet overtemperature protection fault Overhigh Outlet and shuts down, when the water temper- 0~15°C Temp. ature drops below R12, the heat pump will exit the shutdown protection state. After the heat pump is shut down at constant temperature in hot water mode, Temp.
  • Page 88 Code Name Description Range Max. Outlet Water R29, R30, R32, R33, R42, R43 and R44 20~85°C Temp. in Heating parameters correct the maximum target temperature for heating during heat Max. Limit Target pump running mainly based on the safe Water Temp. at Low 20~85°C operating range of the heat pump and AT in Heating...

  • Page 89: Pump

    6.7. Pump Code Name Description Range Main Circulation Determines how the internal water pump 0-Always On Pump Operation operates in the device. 1-Saving Mode Time between stopping the circulation Interval Time 1~120min pump and restarting. Operation Duration Time from pump start to pump stop. 1~30min Time 0-Always On...

  • Page 90: Disinfection

    Code Name Description Range When H34=1 or H34=2, it is used to Frequency Control configure the parameters of the ERP 1~120Hz Mode mode operation. Resonance Point 1 Some heat pumps may experience res- 1~120Hz onance between structural components Resonance Point 2 1~120Hz and the compressor at certain frequen- cies, causing excessive noise.

  • Page 91: Zone

    Code Name Description Range Interval Period of Specifies the days of the break between 1~30days Disinfection disinfection cycles. Specifies whether the disinfection func- 0-NO Enable Disinfection tion is available. 1-YAS 6.10. Zone Code Name Description Range Selection of multi-zone operation mode: 0 = OFF, 1 = Circuit 1 Room Temperature,...
  • Page 92 Code Name Description Range Zone 2 Heating Target water temperature in heating 16~70°C Target Outlet WT mode for circuit 2. Mixing Valve Manual In the case of manual control of the Adjustment Ratio mixing valve, it determines the percenta- 0~100% (0% for Auto Control) ge opening.

  • Page 93: Sg Ready

    6.11. SG Ready Code Name Description Range Determines whether the Smart Grid 0-Disabled function should be enabled (See 1-One Dry 'Controller User Manual'). SG READY SG01 SG Ready Application Contact control mode: 0 = inactive, 1 = single 2-Two Dry potential-free contact, 2 = double poten- Contact tial-free contact.

  • Page 94: The Logic Of Device Operation

    7.7. The logic of device operation. 7.1. The logic of switching between hot water mode and heating/cooling mode. Start up It has been running for H32 minutes and has no reached Hot water a constans temp. shutdown Hot water costans temp. condition shutdown heating constans temp.

  • Page 95: Fan Control

    Frequency (Hz) Time (s) Within 10 minutes after the heat pump exits defrost mode, the compressor accelerates by 6 Hz/30 s and decelerates by 6 Hz/30 s. Frequency (Hz) Time (s) 7.3. Fan control The fan starts 10 seconds before the compressor. The fan turns off 30 seconds after the compres- sor is turned off.

  • Page 96: Main Circulation Pump Control

    Cooling mode Heating / DHW mode Speed Speed Coli temperature Coli temperature 7.4. Main circulation pump control When H30=0, the hydraulic module is not activated, and the main circulation pump is controlled by the heat pump. Detailed information is available in the heat pump circuit diagram. When H30=1, the hydraulic module is activated, and the main circulation pump is controlled by the hydraulic module.

  • Page 97: Manual Control Of The Circulation Pump Output Function

    P09=0 Compressor kompresor Main pompa wodna circulation pump 2min 1min 1min P09 0 Compressor kompresor Main P09 days P09 days pompa wodna circulation pump 2min 1min 1min 7.6. Circulating pump for domestic hot water Only when manually turned off, the device can manually control the pump performance function. Manual control of the Function circulation pump...

  • Page 98: Electric Heater Control

    Note: In the mixed mode, when the heating mode is switched to the hot water mode, the circulating pump for domestic hot water may only start if the water temperature at the outlet > water tank temperature +1°C. 7.8. Electric Heater Control When R35=0, the electric heater is not turned on.
  • Page 99 Ambient temper- Both power levels of electric heater 1 and In heating mode, ature ≤ parameter electric heater 2 are activated. the water tempera- R45. ture at the outlet is In heating mode, ≥R02-A35; In hot the water temper- water mode, the ature at the outlet water temperature ≤...
  • Page 100 When R35=2 and H30=0, the electric heater of the DHW tank is turned on, and the hydraulic module is not turned on. The device can be activated when operating in the hot water mode, and the power is controlled by the heat pump. Conditions for Conditions for activating the...
  • Page 101 If R35=3 and H30=0, the electric heater of the buffer tank is turned on, and the hydraulic module is not turned on. The device can be activated when operating in heating mode, and the power is controlled by the heat pump. Conditions for Conditions for activating the...
  • Page 102 Flow switch is Both Stage 1 and Stage 2 of the electric In heating mode, closed. heater are turned on. the water tempera- In the on state, in ture at the outlet is heating and hot ≥R02-A35. water mode, the Switch on/off.

  • Page 103: Manual Activation/Deactivation Of The Heater

    7.9. Manual activation/deactivation of the heater. In heating or hot water mode, press the “Electric Heater” button, and the corresponding electric heater will be activated (individual stages of electric heaters are activated according to the logic below). When the water temperature reaches the constant temperature hold state (as shown be- low), the electric heater will be automatically turned off.

  • Page 104: Defrost Tray Heater Control

    Note: If R35=3, the electric heater of the heating tank is not turned on, then the electric heater of the independent DHW tank will be turned on. In hot water mode, the three-way hot water valve is open for at least 3 seconds before the water pump. When H30=0, the output is controlled by the heat pump.
  • Page 105 • Automatic Defrost Conditions for exiting Conditions for entering manual defrost mode Entering/Exiting defrost manual defrost mode. (fulfilled one condition). The unit is operating Defrost time ≥ D19; As shown in the picture in heating or hot water Heat exchanger temper- below: mode;...
  • Page 106 Compressor defrosting 1min frequency Compressor frequency 50Hz 50Hz Four-way valve Defrosting opening Maintail initial opening for 5 min Main circuit electronic expansion valve electronic expansion valve 0 step Defrosting indication 30s 55s 0s 5s...

  • Page 107: Maintenance

    • Controlling the three-way valve during defrost. Position of the Defrost three-way valve. Towards domestic hot Three-way valve is open water (DHW) Towards heating Three-way valve is closed Towards domestic hot Three-way valve is closed water (DHW) Towards heating Three-way valve is open Towards domestic hot Three-way valve is open water (DHW)
  • Page 108 8.1.2. Protection against freezing in low temperatures (winter period) Conditions of Conditions for enter- Controller response exiting (one must Actions ing (all must be met) be met) In cases such as The main circulating pump Ambient The pump is shutdown, lockout, operates intermittently, temperature turned off.

  • Page 109: Troubleshooting

    8.2. Troubleshooting This section contains useful information to diagnose and troubleshoot issues with the unit. Trou- bleshooting and repair actions should only be performed by qualified technicians with the neces- sary training and knowledge. Before proceeding with the troubleshooting procedure, conduct a visual inspection of the device, looking for obvious faults.

  • Page 110: Errors On The Control Board

    Issue with the fan blade The evaporator has or fan motor Incorrect Parameters Check defrosting parameters Check too much frost, and it setting of the EEV valve compressor frequency Check fan rotation cannot be completely Problem with the refrig- speed Check temperature and pressure of defrosted.
  • Page 111 Compressor 1. The compressor mod- 1. Check if the compressor model 1. Enter the correct Drive Error el code is incorrect; code is correct (verify if parameter C04 model code for the 2. The compressor is aligns with the parameter table, and if it compressor.
  • Page 112 IPM current 1. The inverter board is 1. Turn off the power, wait for 5 minutes, 1. If the fault is not sampling error damaged. and then turn it on again, trying several resolved, it is recom- times. mended to replace the inverter board directly.
  • Page 113 Exceeding AC 1. Damaged controller 1. Damaged controller sampling circuit; 1. Replace the Power Current sampling circuit; control board; 2. If the issue per- sists, contact an authorized service center. Error in input 1. Incorrect input 1. Check if the supply voltage is not too 1.
  • Page 114 Protection 1. Incorrect compressor 1. Check if the power supply voltage is 1. First, resolve the against exces- model code. not too high (single-phase 170-265 V, issue with the power sive compressor 2. The compressor is three-phase 320-460 V). supply. speed.

  • Page 115: Errors Of The Fan

    8.4 Errors of the fan Code Name Reset Possible cause Troubleshooting Solutions F031/ Faults of Fan 1/ 1. Parameter settings are 1. Check if the fan parameters are 1. Check and reset F032 Fan 2 incorrect. correct (parameter F01 is correct). the fan parameters.
  • Page 116 F105 Overcurrent 1. Incorrect parameter 1. Check if the fan selection parameters 1. Check and reset protection for settings; are correct. the fan selection IPM (fan). 2. Incorrect fan con- 2. Verify the fan connection according parameters. nection; to the wiring diagram, ensuring that the 2.
  • Page 117 F102 Startup of the 1. Check if the fan is 1. Check the connection of the fan 1. Correct the ter- fan failed (zero incorrectly connected or according to the wiring diagram, ensur- minal connection of speed). if the contact is weak. ing that the connection is correct and the fan.

  • Page 118: Communication Errors

    8.5 Communication errors Reset methods: A = automatic reset; M = manual reset; A/M = Limited automatic reset; Code Name Reset Possible cause Troubleshooting Solutions Communica- 1. Incorrect connection 1. Check if the connection is correct 1. Reconnect. tion error or weak electrical (main board and terminal block, 2.
  • Page 119 F151 Communi- 1. Incorrect connection 1. Check if the connection is correct 1. Reconnect. cation error or weak contact; (main board and terminal strip, termi- 2. Replace the com- between the 2. Communication line nal strip and display). munication line. compressor is damaged;...

  • Page 120: Sensors Faults

    8.6. Sensors faults Reset methods: A = automatic reset; M = manual reset; A/M = Limited automatic reset; Code Name Reset Possible cause Troubleshooting Solutions Fault in the 1. Break in the circuit 1. Check the connection and resistance 1. Reconnect the water inlet or short circuit of the of the inlet water temperature sensor.
  • Page 121 PP11 Pressure sensor 1. Open circuit or short 1. Check the connection and resistance 1. Reconnect the error. circuit in the fluid tem- of the pressure sensor. sensor. perature sensor circuit. 2. The pressure sensor is damaged. 2. Replace the 2.
  • Page 122 P013 Fault of the 1. Open circuit or short 1. Check the connection and resistance 1. Reconnect the temperature circuit of the tempera- of the temperature sensor for the water sensor sensor for the ture sensor for the water returning to the heating system. 2.

  • Page 123: System Faults

    8.7. System faults Reset methods: A = automatic reset; M = manual reset; A/M = Limited automatic reset; Code Name Reset Possible cause Troubleshooting Solutions Overpressure 1. High-pressure switch 1. Use a multimeter to check if the 1. Reconnect the protection is damaged or improper- high-pressure switch is closed after...
  • Page 124 Underpressure 1. Refrigerant leakage in 1. Connect a pressure gauge to the 1. Perform welding protection the system. low-pressure side and observe changes repairs, maintain 2. Incorrect connec- in refrigerant pressure. If it drops below pressure, purge tion or damage to the 0 bar, it indicates refrigerant leakage.
  • Page 125 7. Gently tap the electronic expansion valve body a few times and restart the device to heat up. If heating is normal, the electronic expansion valve is blocked. If low-pressure protection still operates, proceed to the next step. 8. Remove refrigerant from the system and take out the filter for inspection.
  • Page 126 Protection 1. Insufficient water flow; 1. Check if the water flow is low. If it 1. Familiarize your- against overheat- is low, refer to the troubleshooting self with the trouble- ing of the inlet methods 1-5 for the water flow sensor. shooting methods and outlet water If the water flow is normal, proceed to...
  • Page 127 6. Check if the coil and electronic expansion valve body are securely attached, and the connection between the coil and the main board is not loose, etc. After checking, start the heating, and if the low-pressure protection still works, proceed to the next step. 7.

  • Page 128: Multiple-Zone Control Malfunctions

    Severe frost 1. Insufficient installa- 1. Check if the airflow is correct and if 1. Remove contami- formation on tion space. the space meets the requirements of nants from the heat the heat ex- 2. Water temperature is the instructions. exchanger.

  • Page 129: Components List

    9. 9. Components List 9.1. Assembly Drawing Model KHY-12PY3 (example)
  • Page 130 Component Descriptions: Name Quantity Name Quantity Waterproof Cable Glands (Black) Marking Reactor Front Cover Water Flow Sensor Fan Grille Outlet Pipe Connectors DC Fan Motor Inlet Pipe Connectors Axial Fan Blade Water pump Internal Plate Water Pump Connector Motor Bracket Assembly Rear Side Cover Plate.
  • Page 131 Products are subject to continuous improvement, therefore Klima-Therm Sp. z o.o. reserves the right to change documents and technical parameters at any time, without prior notice. Version: January 2023 Thank you for choosing our product. For more information, please visit the website: kaisai.com...
  • Page 132 www.kaisai.com...

This manual is also suitable for:

Khy-15py3

Table of Contents