Airwell MONOBLOC R32 Installation And Owner's Manual
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Airwell MONOBLOC R32 Installation And Owner's Manual

Airwell MONOBLOC R32 Installation And Owner's Manual

Air to water heat pump
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Download this manual See also: Operating Manual
INSTALLATION
AND OWNER'S MANUAL
IMPORTANT NOTE:
Thank you very much for purchasing our product,
Before using your unit , please read this manual carefully and keep it for future reference.
MONOBLOC R32
Air to Water Heat Pump

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  • Page 1 INSTALLATION AND OWNER’S MANUAL MONOBLOC R32 Air to Water Heat Pump IMPORTANT NOTE: Thank you very much for purchasing our product, Before using your unit , please read this manual carefully and keep it for future reference.

  • Page 2: Table Of Contents

    CONTENTS SAFETY CONSIDERATIONS GENERAL INFORMATION ACCESSORIES Accessories supplied with the unit Accessories avaliable from supplier BEFORE INSTALLATION IMPORTANT INFORMATION FOR THE REFRIGERANT INSTALLATION SITE Selecting a location in cold climates Selecting a location in hot climates INSTALLATION PRECAUTIONS Dimensions Installation requirements Drain hole position Servicing space requirements TYPICAL APPLICATIONS...
  • Page 3 Initial start-up at low outdoor ambient temperature 10.3 Pre-operation checks 10.4 Powering up the unit 10.5 Setting the pump speed 10.6 10.7 Field settings TEST RUN AND FINAL CHECKS 11.1 Final checks Test run operation (manually) 11.2 MAINTENANCE AND SERVICE TROUBLE SHOOTING General guidelines 13.1...
  • Page 4 5/7/9 kW 12/14/16 kW Wiring diagram:12~16kW(3-phase) for example Electric Control System Terminal Block Hydraulic System 5/7/9 kW Refrigerant System 12/14/16 kW Please remove the hollow plate after installation. Installtion fitting NOTE The picture and function described in this manual contain the backup heater components. 1-phase 3-phase Unit...

  • Page 5: Safety Considerations

    1 SAFETY PRECAUTIONS The precautions listed here are divided into the following types.They are quite important, so be sure to follow them carefully. Meanings of DANGER, WARNING, CAUTION and NOTE symbols. INFORMATION Read these instructions carefully before installation. Keep this manual in a handy for future peference. Improper installation of equipment or accessories may result in electric shock, short-circuit, leakage, fire or other damage to the equipment.
  • Page 6 DANGER Before touching electric terminal parts, turn off power switch. When service panels are removed, live parts can be easily touched by accident. Never leave the unit unattended during installation or servicing when the service panel is removed. Do not touch water pipes during and immediately after operation as the pipes may be hot and could burn your hands.

  • Page 7: General Information

    Do not install the unit in the following places: - Where there is mist of mineral oil, oil spray or vapors. Plastic parts may deteriorate, and cause them to come loose or water to leak. - Where corrosive gases (such as sulphurous acid gas) are produced. Where corrosion of copper pipes or soldered parts may cause refrigerant to leak.
  • Page 8 Capacity/Load Room thermostat(field supply) Room thermostat can be connected to the unit(room thermostat should be kept away from heating source ③ ① when selecting the installation place). ② Solar kit for domestic hot water tank(field supply) An optional solar kit can be connected to the unit. Remote alarm kit(field supply) A remote alarm kit can be connected to the unit.

  • Page 9: Accessories

    The unit have a freeze prevention function that uses the 3 ACCESSORIES heat pump and backup heater（Customized model） to keep the water system safe from freezing in all conditions. Since a power failure may happen when the 3.1 Accessories supplied with the unit unit is unattended, It's suggested to use anti-freezing flow switch in the water system.

  • Page 10: Important Information For The Refrigerant

    CAUTION To avoid injury, do not touch the air inlet or aluminum fins of the unit. Do not use the grips in the fan grills to avoid damage. The unit is top heavy! Prevent the unit from falling due to improper inclination during handling. ≥1000mm The hook and barycenter of the unit should be on a line...

  • Page 11: Installation Site

    CAUTION Frequency of Refrigerant Leakage Checks - For unit that contains fluorinated greenhouse gases in quantities of 5 tonnes of CO equivalent or more,but of less than 50 tonnes of CO equivalent,at least every 12 months, or where a leakage detection system is installed, at least every 24 months.

  • Page 12: Selecting A Location In Cold Climates

    If you install the unit on a building frame, please install a waterproof plate (field supply) (about 100mm, on the underside of the unit) in order to avoid drain water dripping. (See the picture in the right). NOTE Unit is top heavy! Try not to install on the building frame.

  • Page 13: Installation Precautions

    7 INSTALLATION PRECAUTIONS 7.1 Dimensions 5/7/9 kW (unit: mm) 12/14/16 kW (unit: mm) Model 5/7/9kW 1210 12/14/16kW 1414 1404 7.2 Installation requirements Check the strength and level of the installation ground so that the unit may not cause any vibrations or noise during its operation.

  • Page 14: Drain Hole Position

    7.3 Drain hole position Drain hole Drain hole This drain hole is covered by rubber This drain hole is covered by rubber plug. If the small plug. If the small drain hole can not drain hole can not meet the drainage requirements, the meet the drainage big drain hole can be used at the same requirements, the big...

  • Page 15: Typical Applications

    ＜1/2 H Unit A(mm) B1(mm) B2(mm) C(mm) 5~9kW ≥1500 ≥500 ≥150 ≥300 12~16kW ≥2000 ≥1000 ≥150 ≥300 2) In case of installing multiple units in lateral connection per row. ≥500mm ≥500mm ＜1/2 H A(mm) B1(mm) B2(mm) C(mm) Unit 5~9kW ≥2500 ≥1000 ≥300 ≥600...

  • Page 16: Application

    1.4 1.2 ---- FHL1 FHL2 ---- FHLn Coding Assembly unit Coding Assembly unit Outdoor unit Wired controller Manometer Room thermostat (field supply) Pressure relief valve Drain valve (field supply) Expansion vessel Fill valve (field supply) Plate heat exchanger Balance tank (field supply) Backup heater（Customized model）...
  • Page 17 12.1 12.3 12.2 1.4 1.2 ---- FHL1 FHL2 ---- FHLn Coding Assembly unit Coding Assembly unit Outdoor unit Drain valve Expansion vessel (field supply) Manometer Pressure relief valve P_o: Outside circulation pump (field supply) Expansion vessel Collector (field supply) Plate heat exchanger Domestic hot water tank (field supply) Backup heater（Customized model）...

  • Page 18: Application 3

    CAUTION Make sure to fit the 3-way valve correctly. For more details, refer to 9.7.6 Connection for other components/For 3-way valve SV1. NOTE The unit can be configured so that at low outdoor temperatures, water is exclusively heated by the booster heater. This assures that the full capacity of the heat pump is available for space heating.

  • Page 19: Application

    NOTE The volume of balance tank(8) should be greater than 40L(for 5~9kW unit, greater than 20L) The drain valve (6) should be installed at the lowest positon of the system. An independent backup heater can be selected and installed in the door.pump(10) should be controlled by outdoor unit and connect to corresponding port in the outdoor unit(refer to 9.7.6 Connection for other components/For outside circulation pump P_o).

  • Page 20: Application 5

    Coding Assembly unit Coding Assembly unit Outdoor unit Drain valve (field supply) Manometer Fill valve (field supply) Pressure relief valve Balance tank (field supply) Expansion vessel Air purge valve Plate heat exchanger Drain valve Backup heater（Customized model） Expansion vessel (field supply) Air purge valve P_o: Outside circulation pump (field supply) Flow switch...
  • Page 21 CAUTION Be sure that the boiler and the integration of the boiler in the system is in accordance with relevant local laws and regula- tions. 8.5.1 Application a Boiler provide heat for space heating only 12.1 12.3 12.2 23.1 1.4 1.2 ---- ---- FHL1...
  • Page 22 8.5.3 Application c Boiler provide heat for space heating and domestic water heating. The ON/OFF of boiler controlled by unit. 12.1 12.3 12.2 1.4 1.2 ---- FHL1 FHL2 ---- FHLn Coding Assembly unit Coding Assembly unit Outdoor unit Expansion vessel (field supply) Manometer P_o: Outside circulation pump (field supply) Pressure relief valve...

  • Page 23: Application

    As the outdoor temperature is measured via the outdoor unit air thermistor, make sure to install the outdoor unit in the shade, so that it is not influenced by the sun’s heat. Frequent switching can cause corrosion of the boiler at an early stage. Contact the boiler manufacturer. During heating operation of the unit, the unit will operate to achieve the target water flow temperature set on the user interface.
  • Page 24 FCU1 FCU2 FCUn 23.1 1.4 1.2 FHL1 FHL2 FHLn Coding Assembly unit Coding Assembly unit Outdoor unit Fill valve (field supply) Manometer Balance tank (field supply) Pressure relief valve Air purge valve Expansion vessel Drain valve Plate heat exchanger Expansion vessel (field supply) Backup heater（Customized model）...

  • Page 25: Application

    NOTE Make sure to correctly configure the room thermostat installation on the user interface. Refer to "10.7 Field settings/ROOM THERMOSTAT". It is the installers’ responsibility to ensure that no unwanted situations can occur (e.g. extremely high temperature water going towards floor heating loops, etc.) The supplier does not offer any type of mixing station.

  • Page 26: Application 8

    Coding Assembly unit Coding Assembly unit Outdoor unit Fill valve (field supply) Manometer Balance tank (field supply) Pressure relief valve Air purge valve Expansion vessel Drain valve Plate heat exchanger Expansion vessel (field supply) Backup heater（Customized model） P_o: Outside circulation pump (field supply) Air purge valve Collector (field supply) Bypass valve (field supply)

  • Page 27: Disassembling The Unit

    Coding Assembly unit Coding Assembly unit Outdoor unit Expansion vessel (field supply) Manometer P_o: Outside circulation pump (field supply) Pressure relief valve Collector (field supply) Expansion vessel Domestic hot water tank (field supply) Plate heat exchanger 12.1 Air purge valve Backup heater（Customized model）...

  • Page 28: Main Components

    WARNING Switch off all power — i.e. unit power supply and backup heater and domestic hot water tank power supply (if applicable) — before removing doors 1 and 2. Parts inside the unit may be hot. Push the grill to the left until it stops, then pull its right edge, so you can removed the grill. You can also reverse the procedure. Be careful to avoid hand injury.
  • Page 29 Coding Assembly unit Explaination Remaining air in the water circuit will be automatically removes Air purge valve air from the water circuit. Provides additional heating capacity when the heating capacity of the heat pump is insufficient due to very low Backup heater(optional) outdoor temperature.

  • Page 30: Electronic Control Box

    NOTE The standard unit is without backup heater. Backup heater kit is an optional part for 5,7,9kw models. Backup heater can be integrated in the unit for customized models(12,14,16kW). If the backup heater is installed, the port (CN6) for T1 in the main control board of hydraulic compartment should connect to the corresponding port in the backup heater kit.
  • Page 31 9.3.1 Main control board of hydraulic module 1-phase 5/7/9kW 1-phase 12/14/16kW 3-phase 12/14/16kW Coding Assembly unit Input port for solar kits(CN5) Output port for transformer(CN4) Power supply port for the wired controller(CN36) Port for remote switch(CN12) Port for flow switch(CN8) Port for communication with the wired controller(CN14) Port for communication with PCB B(CN19) Port for temp.sensors(TW_out, TW_in, T1, T2,T2B )(CN6)
  • Page 32 9.3.2 1-phase for 5/7/9kW units 1) PCB A， Inverter module Coding Assembly unit Assembly unit Coding Compressor connection port U Reserved(CN302) Compressor connection port V Port for communication with PCB B(CN32) Compressor connection port W Input port L for rectifier bridge(CN501) Output port for +12V/5V(CN20) Input port N for rectifier bridge(CN502) Port for fan(CN19)
  • Page 33 Coding Assembly unit Coding Assembly unit Output port N to PCB A(CN27) Port for pressure sensor(CN4) Output port N to hydro-box control board(CN3) Reserved(CN2) Port for communication with hydro-box control board Port for ground wire(CN31) (CN29) Port for IC programming(CN32) Reserved(CN30) Port for ground wire(CN37) Port for communication with PCB A(CN17)
  • Page 34 2) PCB B, Main control board Coding Assembly unit Coding Assembly unit Port for low pressure switch and quick Power supply port for hydro-box control check(CN12) board(CN16) Port for suction temp.sensor(CN24) Port for SV6 value(CN7) Port for pressure sensor(CN28) Port for 4-way value(CN13) Port for discharge temp.sensor(CN8) Port for compressor eletrical heating tape(CN14) Port for outdoor ambient temp.
  • Page 35 Assembly unit Coding Output port for +15V(CN4) Port for communication with PCB B (CN1) Compressor connection port W Compressor connection port V Compressor connection port U Input port P for IPM module(P) Input port N for IPM module(N) Input port for high pressure switch (CN9) Power for switching power supply(CN2) 3-phase PCB A 2) PCB B, Main control board...
  • Page 36 3) PCB C, filter board CN32 CN38 CN31 CN37 CN30 CN36 CN39 PCB C 3-phase 12/14/16kW Coding Assembly unit Coding Assembly unit Power supply L3(L3) Power supply port for main control board(CN19) Power supply L2(L2) Power filtering L1(L1’) Power supply L1(L1) Power filtering L2(L2’) Power supply N(N) Power filtering L3(L3’)

  • Page 37: Water Piping

    9.4 Water piping All piping lengths and distances have been taken into consideration. Requirements Valve The maximum allowed thermistor cable length is 20m. This is the maximum allowable distance between the domestic hot water tank and the unit (only for installations with a domestic hot water tank).The thermistor cable supplied with Thermistor cable length minus 2m the domestic hot water tank is 10m in length.In order to optimize efficiency we...
  • Page 38 Before continuing installation of the unit, check the following: The maximum water pressure ≤ 3 bar. The maximum water temperature ≤ 70°C according to safety device setting. Always use materials that are compatible with the water used in the system and with the materials used in the unit. Ensure that components installed in the field piping can withstand the water pressure and temperature.
  • Page 39 Determine the calculated pre-pressure (Pg) for the calculate the pre-pressure of the expansion vessel: corresponding maximum water volume using the Pg(bar)=(H(m)/10+0.3) bar graph below. the expansion vessel equipped in the unit should adjust the pre- pressure also. Check that the total water volume in the entire water circuit is lower than this value.
  • Page 40 9.4.4 Water circuit anti-freeze protection Ice formation can cause damage to the hydraulic system. As the outdoor unit may be exposed to sub-zero temperatures, care must be taken to prevent freezing of the system. All internal hydronic parts are insulated to reduce heat loss. Insulation must also be added to the field piping. The software contains special functions using the heat pump to protect the entire system against freezing.

  • Page 41: Adding Water

    Keep dry NOTE NOTE Be aware of the hygroscopic property of CounterclockWise rotation, remove the flow glycol. It absorbs moisture from the environ- switch. ment. Drying the flow switch completely. Leaving the cap off the glycol container causes the concentration of water to CAUTION increase.

  • Page 42: Water Piping Insulation

    NOTE During filling, it might not be possible to remove all air in the system. Remaining air will be removed through the automatic air purge valves during the first operating hours of the system. Topping up the water afterwards might be required.
  • Page 43 5/7/9kW 12/14/16kW...
  • Page 44 Coding Assembly unit Coding Assembly unit Outdoor unit P_d: DHW pump (field supply) Solar energy kit (field supply) SV2: 2-way valve (field supply) SV1: 3-way valve for domestic hot User interface water tank (field supply) Room thermostat (field supply) Domestic hot water tank Boiler (field supply) Booster heater P_s: Solar pump (field supply)
  • Page 45 Coding Assembly unit High voltage wire hole Low voltage wire hole Drainage pipe hole Water outlet Water inlet 1-phase 5/7/9 kW Field wiring guidelines Most field wiring on 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 (door 2).
  • Page 46 L2 L3 1-phase 3-phase Unit(kW) 5/7/9 12~16 12~16 Maximum overcurrent protector(MOP) Wiring size(mm OUTOOOR UNIT OUTOOOR UNIT POWER SUPPLY POWER SUPPLY 1-phase 3-phase Stated values are maximum values (see electrical data for exact values). NOTE The ground fault circuit interrupter must be a high-speed type breaker of 30 mA (<0.1 s). 9.7.5 Connection of the backup heater power supply(This section is intended only for models that contain backup heater.) Power circuit and cable requirements...
  • Page 47 9.7.6 Connection for other components Uint 5~9kW CN11 CN13 CN14 CN10 CN10 CN15 CN19 CN16 AHS1 AHS2 CN18 IBH1 DFT1 DFT2 HBK1 HBK2 CN17 CN20 Unit 12~16kW CN10 A SH1 A SH1 IBH1 DTF1 DTF2 Coding Assembly unit Coding Assembly unit Solar input DHW electric back heating Remote alarm...
  • Page 48 a) Procedure Connect the cable to the appropriate terminals as shown in the picture. Fix the cable reliably. SOLAR PUMP Control signal output 4) For 3-way value SV1 Voltage 220-240VAC Minimum circuit amps (MCA) Wiring size(mm 0.75 Control port signal type Type 2 2) For remote alarm: Method 1...
  • Page 49 External thermostat NOTE For 5/7/9 kW units， the terminal number is 37 and 38. For 12/14/16 kW units， the terminal number is 29 and 30. HEAT COOL Voltage 220-240VAC Maximum running current(A) Wiring size(mm 0.75 Control port signal type Type 2 Method A: Method B: a) Procedure...
  • Page 50 Method A RT can control heating and cooling individually, like the controller for 4-pipe FCU. When the hydraulic module is connected with the external temperature controller, user interface FOR SERVICEMAN set THERMOSTAT and ROOM MODE SETTING to YES： A.1 When unit detect voltage is 230VAC between C and N ,the unit operates in the cooling mode. A.2 When unit detect voltage is 230VAC between H and N, the unit operates in the heating mode.
  • Page 51 9) For additional heat source control： AHS1 AHS2 IBH1 IBH2 CONTROL SIGNAL CONTROL SIGNAL OUTPUT OUTPUT ADDITIONAL HEAT SOURCE CONTROL SIGNAL OUTPUT 13) For defrosting signal output: For 5/7/9 kW unit，the terminal number is 25 and 26. Voltage 220-240VAC DFT1 DFT2 Maximum running current(A) Wiring size(mm 0.75...

  • Page 52: Start-Up And Configuration

    As described above, during wiring, port A in the unit terminal XT6 corresponds to port A in the user interface. Port B corresponds to port B. Port X corresponds to port X. Port Y corresponds to port Y, and port E corresponds to port E. a) Procedure Remove the rear part of the user interface.
  • Page 53 Temperature curves for Cooling mode Outdoor Tem peratures Applic ation Curve -5~ 14 15~ 21 22~ 29 30~ 46 number t emperat ure High t emperat ure Low temperature curves for heating mode T1s(°C) T4(℃) High temperature curves for heating mode T1s(°C) T4(℃)

  • Page 54: Dip Switch Settings Overview

    Low temperature curves for cooling mode T1s(°C) T4(℃) High temperature curves for cooling mode T1s(°C) T4(℃) 10.2 DIP switch settings overview 10.2.1 Function setting DIP switch 13 is located on the hydraulic module main control board (see "9.3.1 main control board of hydraulic module") and allows configuration of additional heating source thermistor installation, the second inner backup heater installation, etc.

  • Page 55: Initial Start-Up At Low Outdoor Ambient Temperature

    Description Description switch switch Additional heating source outlet Selection of refrigerant Default temperature thermistor Installed pipe length installed installation Backup heater outlet temperature thermistor Installed installed installation The first inner backup Installed heater installation installed The second inner backup Installed heater installation installed 10.2.2 Maximum operating current setting...

  • Page 56: Powering Up The Unit

    DANGER Switch off the power supply before making any connections. After the installation of the unit, check the following before switching on the circuit breaker: Field wiring：Make sure that the field wiring between the local supply panel and unit and valves (when applicable), unit and room thermostat (when applicable), unit and domestic hot water tank, and unit and backup heater kit have been connected according to the instructions described in the chapter 9.6 Field wiring, according to the wiring diagrams and to local laws and regulations.

  • Page 57: Field Settings

    DANGER Operating the system with closed valves will damage the circulation pump! Available external static pressure VS flowrate (12~16kW) Ⅲ Ⅱ Ⅰ Flowrate(m DANGER If it's necessary to check the running status of the pump when unit power on. please do not touch the internal electronic control box components to avoid electric shock.
  • Page 58 Procedure To change one or more field settings, proceed as follows. CAUTION Temperature values displayed on the wired controller (user interface) are in °C. Keys Function MENU • Go to the menu structure(on the home page) • Navigate the cursor on the display ◄►▼▲...
  • Page 59 Go to MENU> FOR SERVICEMAN>DHW MODE If tank heater (booster heater) is avaliable, Go to FOR SETTING>1.1 DHW MODE SERVICEMAN >DHW MODE SETTING>1.2 TANK HEATER and select “Yes”, when “OK” pressed, the 1 DHW MODE SETTING following page will appear: dT5_ON 5°C 1.2 TANK HEATER...
  • Page 60 T5S_DI is the target temperature of water in the domestic NOTE hot water tank in the DISINFECT function. If ROOM TEMP is enabled(refer to 10.7 Field t_DI_HIGHTEMP is the time that the hot water will last. setting/TEMP. TYPE SETTING), it is suggested t_DI_MAX is the time that disinfection will last.
  • Page 61 When DISINFECT is ON, the DHW pump will operate T4CMAX is the maximum ambient temperature in COOL when the unit is in disinfect mode and T5≥T5S_DI-2. mode. The unit cannot work if the ambient temperature is Pump run time is PUMP RUNNING TIME+5min. higher.
  • Page 62 TS+dTSH 3 HEAT MODE SETTING HEAT MODE HEAT T1S RANGE HIGH T4HMAX 25°C t_INTERVAL_H is the compressor start time interval in T4HMIN -15°C heat mode. When the compressor stops running, the next dT1SH 5°C time that the compressor turns on should be “ t_INTERVAL_H”...
  • Page 63 The TEMP. TYPE SETTING is used for selecting whether If application 4(refer to 8.4 Application 4) is applied, the water flow temperature or room temperature(detected please set WATER FLOW TEMP. to NON, and set by the temperature sensor attached in the user interface) ROOM TEMP.
  • Page 64 dT1_IBH_ON is the temperature difference between T1S NOTE and T1 for starting the backup heater. Only when at the T1<T1S-dT1_IBH_ON can the backup heater turn on. The setting in the user interface should When a second backup heater is installed, if the correspond to the wiring of thermostat.
  • Page 65 When the cursor is on T4_AHS_ON、dT1_AHS_ON、 8 HOLIDAY AWAY SETTING dT1_AHS_OFF or t_AHS_DELAY, Use and ▼ ▲ to T1S_H.A_H 20°C scroll and adjust the parameter. T5S_H.M_DHW 15°C When the cursor is on T4_AHS_ON、dT1_AHS_ON、 dT1_AHS_OFF or t_AHS_DELAY, Use and ▼ ▲ to scroll and adjust the parameter.
  • Page 66 How to set the RESTORE FACTORY SETTINGS Use ▼ ▲ to scroll to the mode you want to run and press OK. The unit will run as selected. To restore factory settings, go to MENU> FOR If POINT CHECK is selected, the following page will SERVICEMAN>RESTORE FACTORY SETTINGS.
  • Page 67 When circulation pump running is turned on, all running During test run, all buttons except OK are invalid. If you components will stop. 60 minutes later, the 3-way valve want to turn off the test run, please press OK. For will open, the 2-way valve will close, 60 seconds later example ,when the unit is in air purge mode, after you PUMPI will operate.
  • Page 68 During air purge, the 3-way valve will open, and the 2-way 12.2 PREHEATING FOR FLOOR valve will close. 60 seconds later the pump in the unit Preheat for floor is (PUMPI) will operate for 10 min, during which the flow running for 25 minutes.

  • Page 69: Test Run And Final Checks

    Use ▼, ▲, to scroll and use OK to select YES or NON to enable or disable the auto restart function. If the auto restart function is enabled, when power returns after a power supply failure, the AUTO RESTART function T_DRYPEAK reapplies the user interface settings at the time of the power supply failure.

  • Page 70: Test Run Operation (Manually)

    When the complete installation and all necessary The following checks must be performed at least once a settings have been carried out, close all front panels year by qualified person. of the unit and refit the unit cover. Water pressure The service panel of the switch box may only be Check the water pressure, if it is below 1 bar,fill water opened by a licensed electrician for...

  • Page 71: General Symptoms

    Before starting the troubleshooting procedure, carry out a thorough visual inspection of the unit and look for obvious defects such as loose connections or defective wiring. WARNING When carrying out an inspection on the switch box of the unit, always make sure that the main switch of the unit is switched off.
  • Page 72 Symptom 3: Pump is making noise (cavitation) POSSIBLE CAUSES CORRECTIVE ACTION There is air in the system. Purge air. • Check on the manometer that there is sufficient water pressure. The water pressure must be > 1 bar (water is cold). •...

  • Page 73: Operation Parameter

    Symptom 8: DHW mode can’t change to Heat mode immediately POSSIBLE CAUSES CORRECTIVE ACTION • Set “t_DHWHP_MAX” to minimum value, the suggested value is 60min. • If circulating pump out of unit is not controlled by unit, try to Heat exchanger for space connect it to the unit.

  • Page 74: Error Codes

    13.4 Error codes When a safety device is activated, an error code will be displayed on the user interface. A list of all errors and corrective actions can be found in the table below. Reset the safety by turning the unit OFF and back ON. In case this procedure for resetting the safety is not successful, contact your local dealer.
  • Page 75 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION Check that all shut off valves of the water circuit are completely open. 1. Check if the water filter needs cleaning. 2. Refer to "9.4 Charging water" 3. Make sure there is no air in the system(purge air). 4.
  • Page 76 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION 1. Whether there is power connected to the PCB and driven board. Check the PCB indicator light is on or off. If Light is off, Communication error between reconnect the power supply wire. inverter module PCB A and 2.if light is on, check the wire connection between the main main control board PCB B...
  • Page 77 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION The outside ambient temperature is too high(higher than 30°C, The condenser refrigerant the unit still operate heat mode. close the heat mode when the outlet temperature is too high ambient temperature is higher than 30°C. in heating mode for more than 10 minutes.
  • Page 78 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION 1.The same reason to P1. 2. System is lack of refrigerant volume. Charge the refrigerant in right volume. High discharge temperature protection. 3.TW_out temp sensor is loosen Reconnect it.. 4. T1 temp sensor is loosen. Reconnect it. 5.
  • Page 79 ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION 1. Heat exchanger cover is not removed. Remove it. 2. Heat exchanger is dirty or something is block on the surface. High temperature protection of Clean the heat exchanger or remove the obstruction. refrigerant outlet temp of 3.

  • Page 80: Technical Specifications

    14 TECHNICAL SPECIFICATIONS 14.1 General 1-phase 3-phase 1-phase 12/14/16 kW 12/14/16 kW 5/7/9 kW Nominal capacity Refer to the Technical Data Dimensions HxWxD 1414×1404×405mm 1414×1404×405mm 945×1210×402mm Weight (without backup heater) Net weight 158kg 172kg 92kg Gross weight 178kg 193kg 111kg Weight (backup heater have be intergrated in the unit) Net weight 163kg...

  • Page 81: Replacement Of Safety Valve

    15 REPLACEMENT OF SAFETY VALVE (Only for 12~16kW units) Visual inspection is needed after that period, maintenance people should check the appearance of the valve body and the operating environment. If the valve body is not obvious corrosion, cracks, dirt, damage, then the valve can be used continually. Otherwise, please contact your supplier for spare part.
  • Page 82 7) Ventilated area Ensure that the area is in the open or that it it adequately ventilated before breaking into the system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
  • Page 83 14) Leak detection methods The following leak detection methods are deemed acceptable for systems containing flammable refrigerants. Electronic leak detectors shall be used to detect flammable refrigerants, but the sensitivity may not be adequate, or may need re-calibration.(Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant.
  • Page 84 18) Labelling Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label shall be dated and signed. Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant. 19) Recovery When removing refrigerant from a system, either for service or decommissioning, it is recommended good practice that all refrigerants are removed safely.
  • Page 85 ANNEX A: Refrigerant cycle Outlet Inlet Cooling Heating Description Description Item Item Refrigerant inlet (liquid pipe) temp. sensor Compressor Refrigerant outlet (gas pipe) temp. sensor 4-Way Valve Water outlet temp. sensor Gas-liquid separator Water Inlet temp. sensor Air side heat exchanger Air purge valve Electronic expansion Valve Expansion vessel...
  • Page 86 ANNEX B: Electrically controlled wiring diagram 1-phase 5/7/9kW TRANS...
  • Page 87 Annex B: Electrically controlled wiring diagram 1-phase 12/14/16kW TRANS...
  • Page 88 Annex B: Electrically controlled wiring diagram 3-phase 12/14/16kW...
  • Page 89 NOTE...

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