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INSTALLATION & OWNER'S MANUAL Split Air-source Heat pump Water Heater KHP-26 ACS1 KT-200 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.
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 reference. • Improper installation of equipment or accessories may result in electric shock, short-circuit, leakage, fire or other damage to the equipment. Be sure to only use accessories made by the supplier, which are specifically designed for the equipment and make sure to get installation done by a professional. • All the activities described in this manual must be carried out by a licensed technician. Be sure to wear adequate personal protection equipment such as gloves and safety glasses while installing the unit or carrying out mainte- nance activities. • Contact your dealer for any furthur assistance. DANGER Indicates an imminently hazardous situation which if not avoided, will result in serious injury. WARNING Indicates a potentially hazardous situation which if not avoided, could result in serious injury. CAUTION Indicates a potentially hazardous situation which if not avoided, may result in minor or moderate injury. It is also used to alert against unsafe practices. NOTE Indicates situations that could only result in accidental equipment or property damage.
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DANGER • The operation of the thermal cut-out indicates a possibly dangerous situation. Do not reset the thermal cut-out until the water heater has been serviced by a qualified person. • Failure to operate the relief valve easing gear at least once every six months may result in the water heater exploding. Continuous leakage of water from the valve may indicate a problem with the water heater. • If the hot water system is not used for two weeks or more, a quantity of highly flammable hydrogen gas may accumulate in the water heater. To dissipate this gas safely, it is recommended that a hot tap be turned on for several minutes or until discharge of gas ceases. Use a sink, basin, or bath outlet, but not a dishwasher, clothes washer, or other appliance. During this procedure, there must be no smoking, open flame, or any electrical...
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• Make certain that all electrical work is carried out by qualified personnel according to the local laws and regulations and this manual using a separate circuit. Insufficient capacity of the power supply circuit or improper electrical construction may lead to electric shocks or fire. • Be sure to install a ground fault circuit interrupter according to local laws and regulations. Failure to install a ground fault circuit interrupter may cause electric shocks and fire. • Make sure all wiring is secure. Use the specified wires and ensure that terminal connections or wires are protected from water and other adverse external forces. Incomplete connection or affixing may cause a fire. • When wiring the power supply, form the wires so that the front panel can be securely fastened. If the front panel is not in place there could be overheating of the terminals, electric shocks or fire. • After completing the installation work, check to make sure that there is no refrigerant leakage. • Never directly touch any leaking refrigerant as it could cause severe frostbite. Do not touch the refrigerant pipes during and immediately after operation as the refrigerant pipes may be hot or cold, depending on the condition of the refrigerant flowing through the refrigerant piping, compressor and other refrigerant cycle parts. Burns or frostbite are possible if you touch the refrigerant pipes. To avoid injury, give the pipes time to return to normal temperature or, if you must touch them,be sure to wear protective gloves. • Do not touch the internal parts (pump, backup heater, etc.) during and immediately after operation. Touching the internal parts can cause burns. To avoid injury, give the internal parts time to return to normal temperature or, if you must touch them, be sure to wear protective gloves.
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• This appliance can be used by children 8 years old and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they are supervised or given instruction on using the unit in a safe manner and understand the hazards involved. Children should not play with the unit. Cleaning and user maintenance should not be done by children without supervision. • Children should be supervised to ensure that they do not play with the appliance. • If the supply cord is damaged, it must be replaced by the manufaturer or its service agent or a similarly qualified person. • Concerning disconnection incorporated in the fixed wiring should be in accordance with AS/NZS 3000. • DISPOSAL: Do not dispose this product as unsorted municipal waste. Collection of such waste seperatelly for special treatment is necessary. Do not dispose of electrical appliances as municipal waste, use seperate collection facilities. Contact your local goverment for information regarding the collection systems available. If electrical appliances are disposed of in landfills or dumps, hazardous substance can leak into the groudwater and get into the food chain, damaging your health and well-being. • The wiring must be performed by professional technicians in accordance with national wiring regulation and this circuit diagram. An all-pole disconnection device which has at least 3mm seperation distance in all pole and a residualcurrent device(RCD) with the rating not exceeding 30mA shall be incorporated in the fixed wiring according to the national rule. • Confirm the safety of the installation area (walls, floors, etc.) without hidden dangers such as water, electricity, and gas.
2 GENERAL INTRODUCTION 2.1 Outdoor unit Table 2-1 Name ① Power cord enter ② Refrigerant gas valve ③ Refrigerant liquid valve ④ Air outlet ⑤ Air inlet Fig. 2-1 2.2 Water tank Table 2-2 Name ① Magnesium rod insertion port ② Foam filling port ④...
2.3 Specifications Table 2-3 KT-200 Outdoor unit model Indoor unit model KHP-26 ACS1 Ambient temperature °C -15~46 Leaving water temperature °C 20~70 Capacity 1800 Heating Input 1000 General Hot water yield 0.0387 / 0.0516 Liquid side mm/inch φ6.35 / φI/4' Gas side mm/inch φ9.52 / φ3/8' Refriger- ant piping Max. height difference Max. refrigerant pipe length...
3 BEFORE INSTALLATION 3.1 Accessories Table 3-1 Qty. Shape Purpose Accessory Name Installation manual Need by master unit Manual of wired controller Wired controller instructions Wired controller components Control unit and display unit status Water drainage connection For condensate water draining Outdoor unit Water drainage pipe Condensate water drainage of unit bottom plate Plastic expansion tube To fix mounting box Screw To fix mounting box Fixing box of HMI Install the wired controller Wiring for HMI...
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NOTE • If the water tank is completely installed outdoors, it is strongly recommended to install a rain shelter. • When the water tank is installed outdoors, the distance between the water tank and the fence is not less than 200mm. • When the water tank is installed indoors, the distance between the water tank and the wall is not less than 600mm. • For the water tank with electric auxiliary heater, the electric auxiliary heater shall be at least 1000mm away from the wall to ensure that there is enough space for electric auxiliary heat maintenance. Rain Rainshed Without Aux.* * Electric auxiliary heater is shortened to Aux. Fig 3-3 Fig 3-4...
4 INSTALLATION PROCEDURE NOTE • Ask your dealer or specialized person for moving, repair, and maintenance. • Install it in the place without direct sunlight and other direct heat radiations. If it can’t be avoided, please add a cover to prevent unit from direct sunlight. • The ceiling is horizontal, and its structure can endure the weight of the indoor unit. • Please firmly install the unit, otherwise it may cause abnormal noise and vibration. • Remove obstacles nearby, a narrow circulation space may influence performance of the unit. • Install in the place that closes to water tank as far as possible, under the condition that the installation requirements could be satisfied. • When installing in the place that near to the sea and high place where strong wind blows, install the unit against a wall or use a baffle when necessary to ensure the unit could run normally, see Fig 4-1. Especially in the place with strong wind, pay attention not to let strong wind blow back to the unit. • If install the unit in a basement, inside the room or other confined space, please pay attention to air discharge and air supply circulation around the unit and outside.
4.1.2 Water tank, see Fig. 4-4, Fig. 4-5 and Table 4-2. (Unit: mm) Table 4-2 Dimension Model 200L 1665 Please install the water tank fixing strip as shown in the figure to ensure that the water tank is stably fixed. Fig. 4-4 Fig.
4.3 Pipe connection 4.3.1 Unit connection sketch Unit connection sketch, please refer to Fig.4-8. Icons and meanings Table 4-3 One-way stop valve Water mixing valve Name Water end user (bought by customers themselves) (bought by customers themselves) Icon Safety valve Y-shape filter (≥40 meshes) Name Expansion tank (suggest to install) (bought by customers themselves) (must be installed) Icon Name Gutter Icon NOTE •...
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4.3.2 PTR valve • The valve body unloading pressure is 850kPa, unloading temperature is 99°C. • PT valve is tightened with a 68N.m torque wrench. Apply sealant to the first 3 turns of screw thread before installation; After installation, the outlet of the drain pipe shall be installed face down, and the thread turns that are not screwed into the PT valve shall be less than 3 turns. • Before filling the water tank, the PTR valve must be installed properly. • The PTR valve should be checked every half year to make sure that there is no restriction of the valve. Please beware of hot water from the valve. The drainage pipe should be well insulated in order to prevent water inside pipe from freezing in cold weather. 4.3.3 Stop valve instruction Handle Drainage pipe Fig.4-9 • In general, the shape of stop valve and names of each part are shown in Fig.4-10. • Effect of stop valve: - Stop the system when the unit is working. - When water tank connects with the outdoor unit, vacuumize and add refrigerant through it. - Stop the system and then recycle refrigerant to outdoor unit when maintaining. • Open and close the stop valve: - Open: dismantle the bonnet by wrench and insert an *Allen key to spool, open the stop block anticlockwise and then tighten the bonnet.
NOTE • Do not let air, dust, or other impurities fall in the pipe system during installation. • The connecting pipe should not be installed until the indoor and outdoor units have been fixed already. • Keep the connecting pipe dry, and do not let moisture in during installation. • When connecting copper pipe, please wrap it with thermal insulation material. 4.4 Vacuum Drying 4.4.1 Purpose Vacuum drying should be performed in order to remove moisture and non-condensable gases from the system. Removing moisture prevents ice formation and oxidization of copper piping or other internal components. The presence of ice particles in the system would cause abnormal operation, whilst particles of oxidized copper can cause compressor damage. The presence of non-condensable gases in the system would lead to pressure fluctuations and poor heat exchange perfor-mance.
Table 4-5 Item Description Image Notice Connect the (low pressure side) hose Before performing vacuum drying, make sure that of a pressure gauge to the outdoor all the outdoor unit stop valves are firmly closed. unit gas pipe stop valve. 1. Mixing of pump lubricant with compressor oil could cause compressor malfunction and a one- way valve should therefore be used to prevent vacuum pump lubricant seeping into the piping Connect the hose to the vacuum pump.
5 ELECTRICAL CONNECTION CAUTION • The heat pump should use separate power supply with rated voltage. If voltage is not stable, please use stabilized voltage supply. • The external power supply to the heat pump should have ground wiring, which is linked to the ground wiring of the indoor andoutdoor unit. • The wiring work should be done by qualified persons according to circuit drawing. • A leakage protector should be installed according to the National Standard concerning electrical appliance. • An all-pole disconnection device which has at least 3mm separation distance in contact points should be installed. • Power supply cords and signal wires should be arranged properly. Separate strong current wire and weak current wire, meanwhile they can’t contant with connection pipe and valve. • Power supply with a leakage protector should be installed in a water-proof place inside the room. • Don’t do cross connection between 2 wires and signal wires must be shielded. • When power supply cord parallels with controlling wire, please put the wires to corresponding wire pipe and leave proper spac between wires. • When selecting power supply cords, please refer to to the National Standard and this manual, power supply used outdoor should not lighter than NO.57 wire in IEC 60245. • If power supply cord is damaged, to avoid danger, it must be replaced by professional person. • Do not turn on the power until you have checked carefully after wiring. • This appliance can be connected only to a supply with system impedance no more than 0.530Ω. In case necessary,please consult your supply authority for system impedance information.
5.2 Water tank temperature sensor installation Connect the water tank temperature sensor wire connector to the outdoor unit T5L connector. Water tank temperature sensor T5L Fig.5-1 5.3 ODU & AUX. power connection NOTE If the water tank has the electric auxiliary heating(AUX.)function, please follow the steps below to connect the electric auxiliary heating power cord. 1. Remove the protective cover of the electric control box on the right side of the outdoor unit. Fig.5-2 2. Connect the electric auxiliary heating power line on the water tank to the corresponding port on the terminal block. Terminal block Fig.5-3...
3. Outdoor unit power supply. Terminal block o o o Power supply E-heater Fig.5-4 1. Electric counter 2. Global overcurrent and leakage circuit breaker 3. Electric leakage circuit breaker 4. Overcurrent circuit breaker CAUTION • A leakage protector must be installed on power supply box outside the unit according to the figure above. • Power supply with leakage protector must be installed inside or installed in the place that can satisfy water-proof requirements. • This unit can be started only if it is grounded reliably. 5.4 Dial code definitions NOTE The picture shown is for reference only, actual product may vary. means 0, means 1. Table 5-2 Default S1-1 Reserve 1 2 3 Reserve S1-2 Default 1 2 3...
6 CHECK NOTE Before switching on the unit, read following recommendations: • When the installation and parameter setting are completed, cover all the sheet metal of the unit well. • The unit should be maintained by professionals. For the water tank with electric auxiliary heater, please check the quality of the electric auxiliary heater according to the method in Chapter 6.1 before the Long-term operation to avoid damage to the unit or personal injury. 6.1 Quality inspection of electric auxiliary heater Table 6-1 Description Image Notice The unit shall be installed according to the requirements of the corresponding specifications. After the unit is powered on, press the power Before the unit is powered on, please ensure that the button on the wired controller and the screen system operates in the environment where the water will flash briefly. tank is full of water to prevent damage to the electric auxiliary heat pipe. If the wired controller screen is locked and displays Press and hold the “√” button until the manual the icon “ ...
6.2 System parameters check If the whole unit failed or in protection, the panel will display the corresponding code; when more than one failure or protection occurs, the order of failure protection will display. When checking, the number is displayed first, then the content. Press check button, you can go over parameters of the whole unit, the following table shows sequence of check: Table 6-2 Display content Instructions “dF”——Defrosting “dC”——Refrigerant recovering Normal display “0”——When being shut down “__” Temperature of water tank—— When operating or standby “3”——Water heating Running mode “F0” ——Shut down fan Running air speed “F1” ——Low speed “F3”—— High speed T3 temp. value T4 temp. value T5L temp. value Th temp. value Tp temp. value Current EEV opening degree Actual opening=display value×8 T5s setting temperature Td setting auto start temp. of auxiliary E-heater...
7 OPERATIONS AND PERFORMANCES CAUTION Please cut off the manual switch power when unit fails. Do not restart until problems are solved. 1) Characteristics of water heating——3 minute protection R estart or open manual switch after the unit has been shut down within a short time. Unit will not start immediately until 3 minutes later, because of the self-protect function of the compressor. 2) During operation, if outdoor temperature is higher than normal, the fan motor will runs at low air volume or stop running. 3) About defrosting function perform at heating operation - I n case of frosting during heating operation, to prevent the heating efficiency from decreasing, defrosting operation will turn on automatically (Approx. 2~7 minutes). - In the process of defrosting operation, the unit fan motor will stop running. 4) About protection device - When protection device operate, though the unit stops, the operating indicator of wire control still will be blinking. - When protection device operates, nixie indicator will display malfunction code (unit). - Protection device will act when the following circumstances occur: a) Air inlet or outlet are blocked. b) Voltage is a little higher or lower compare to the voltage range (Exceeding the range of -10%~10% of 230V) 5) Start the unit after a long period out of service S tart-up the unit after out of service for a long period (includes drive up a unit at the first time), you would see rust mix up water in red, flow out from tap. Such that is a normal phenomenon, please be calmly and keep draining, after for a while rust will disappear. 6) About power failure - In case power failure during the unit working, please stop all operating actions. - A t the next startup after power failure, the RUN indicator of wire controller will blink slowly for several seconds for noting user. - Misoperation occur during unit working. 7) About RCCB O utdoor unit must use RCCB,pleases install an RCCB between in user power supply and the outdoor unit. In case the unit cannot act but not attribute to power failure, please check these RCCB switches at first. Before operate the RCCB, please ensure that the user installing switch is break off.
8 MAINTENANCE 8.1 Confirmation before running 1) Make sure whether ground wire is broken or fall off. 2) Power on the machine after all connections are qualified. 8.2 Troubleshooting when abnormal situation happens Before asking for serving or repairing, check the following points: • Non-mechanical malfunction 1) Water oozes from safety valve pressure relief opening - W hen water heating, cold water will expand when heated, water oozing is normal. Do not block it for safety consideration. - I f a large amount of water flows, it means safety valve is invalid.Stop using and replace safety valve. 2) Long period for heating a tank of water - I n winter, water heating efficiency will decrease because of low ambient temperature(about 0°C).It will take a longer time for water heating. - I f customer needs to use hot water, please start the unti in advance. • Need to check 1) Automatically start or stop - Whether we set timer wrongly. 2) When not working - Check whether powering on. - Whether manual switch is on. - Whether fuse blows. - Whether start the protection device (indicator lights). - Whether it is not the time of timer on. (Operation lamp lights.) 3) If heating effect is not good - Whether air outlet and inlet has been blocked. CAUTION • If the following situation happens, please stop running and cut off power supply manually and contact with the dealer or service center.
NOTE Frequency of Refrigerant Leak Checks: 1) For equipment that contains fluorinated greenhouse gases in quantities of 5 tonnes of CO2 equivalent or more,but of less than 50 tonnes of CO2 equipment,at least every 12 months, or where a leakage detection system is installed, at least every 24 months. 2) For equipment that contains fluorinated greenhouse gases in quantities of 50 tonnes of CO2 equivalent or more,but of less than 500 tonnes of CO2 equipment,at least every six months, or where a leakage detection system is installed, at least every 12 months. 3) For equipment that contains fluorinated greenhouse gases in quantities of 500 tonnes of CO2 equivalent or more,at least every three months, or where a leakage detection system is installed,at least every six months. 4) Non-hermetically sealed equipment charged with fluorinated greenhouse gases shall only be sold to the end user where evidence is provide that the installation is to be carried out by an undertaking certified person. 5) Only certificated person is allowed to do installation, operation and maintenance. 8.5 Water quality limitations NOTE If the water quality does not meet the requirements in the table below, please contact the supplier for advice. Table 8-2 Electrical PH Value Total Hardness Conductivity 6.5-8.0 50ppm <200μS/cm(25°C) Sulphate Ion Silicon Iron Content <50ppm...
9 ERROR CODE SHOOTING TABLE Table 9-1 Error Code Explanation Communication error Water tank temperature sensor error (T5L) ODU heat exchanger temperature sensor error (T3) ODU ambient temperature sensor error (T4) Suction temperature sensor error (Th) Discharge temperature sensor error (Tp) Clock chip error Smart Grid signal error E-heater error (Current is less than 2A when e-heater operating) High pressure protection Over load protection of fixed compressor High discharge temperature (Tp) protection Low water temperature protection The ambient temperature exceeds the declared range (not an error) Low super-heat of discharge protection Electic expansion valve joint fault Anti-freezing operating (not an error) for some unit...
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