Kaysun COMPAK KHP 20/300 ACS2 Technical Manual
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Kaysun COMPAK KHP 20/300 ACS2 Technical Manual

Kaysun COMPAK KHP 20/300 ACS2 Technical Manual

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TECHNICAL MANUAL
Heat Pump Water Heater
COMPAK KHP 20/300 ACS2
Kaysun reserves the right to discontinue or change specification or designs at
any time without notices and without incurring obligations.

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Summary of Contents for Kaysun COMPAK KHP 20/300 ACS2

  • Page 1 TECHNICAL MANUAL Heat Pump Water Heater COMPAK KHP 20/300 ACS2 Kaysun reserves the right to discontinue or change specification or designs at any time without notices and without incurring obligations.
  • Page 2 KHP 20/300 ACS2 Manual...
  • Page 3 Content Part 1 General information ......2 Part 2 Performance ........4...

  • Page 4: Part 1 General Information

    KHP 20/300 ACS2 Manual Part 1 General information 1. Measurements ................ 3 2. External appearance ............... 3...

  • Page 5: External Appearance

    KHP 20/300 ACS2 Manual 1. Measurements Model Net/Gross weight (kg) Dimension (mm, D×H) Power Supply KHP 20/300 ACS2 145/175 Ф650×1,985 220-240V~, 50Hz, 1Ph 2. External appearance...

  • Page 6: Table Of Contents

    KHP 20/300 ACS2 Manual Part 2 Performance 1. Features ....................... 5 2. Refrigerant circuit .................... 6 3. Unit structure ..................... 7 4. Specifications ....................8 5. Dimension (Unit: mm) ................... 9 6. Performance diagram ................. 10 7. Wiring diagram ....................12 8.

  • Page 7: Features

    KHP 20/300 ACS2 Manual 1. Features Safety: ² 1. Complete isolation between water and electricity without electric shock problem, more safety. 2. No fuel tubes and storage, no potential danger from oil leakage, fire, explosion, and so on. 3. No cross contamination potential, the condenser coil is microchannel heat exchanger wrapped around the enameled inner tank.

  • Page 8: Refrigerant Circuit

    KHP 20/300 ACS2 Manual 2. Refrigerant circuit Water Water Outlet Tank Pipe Four-way Valve Water Inlet Pipe E-heater Motor Compressor Evaporator Compressor: RJSM160V11WFZA, R134a high efficiency compressor, supplied by GMCC. Evaporator: copper tube and aluminum fin type heat exchanger. EXV: electronic expansion valve, the opening is regulated according to the discharge air temperature of compressor.

  • Page 9: Unit Structure

    KHP 20/300 ACS2 Manual 3. Unit structure...

  • Page 10: Specifications

    KHP 20/300 ACS2 Manual 4. Specifications Model KHP 20/300 ACS2 Running mode Heat pump E-heater Running ambient temperature °C -7～43 -20～43 Output water temperature °C Default 60°C,38°C～70°C Power supply Ph, V, Hz 1, 220-240~, 50 Storage size Capacity kW/kW 4.20 Water heating Max.

  • Page 11: Dimension (Unit: Mm)

    KHP 20/300 ACS2 Manual Input 68/56/50 Speed r/min 620/530/465 Locked rotor Amp(LRA) 0.35 Capacitor 2.5μF/450V Water inlet pipe DN20 Water outlet pipe DN20 Water pipeline Drainage pipe DN20 PTR valve joint DN20 Max. operating pressure Heat exchanger Microchannel heat exchanger E-heater 3.15×1 Hot water yield...

  • Page 12: Performance Diagram

    KHP 20/300 ACS2 Manual 6. Performance diagram The unit has two modes: E-heater and Heat pump. Modes will be automatically selected by unit, and manually mode selection is unavailable. Operation range E-heater running ambient temperature range: -20~43 °C. Heat pump running ambient temperature range: -7~43 °C.
  • Page 13 KHP 20/300 ACS2 Manual The curve between capacity and ambient temperature 15-45 3723 3683 3729 1581 2027 2262 2492 2805 2874 3119 3184 3404 15-55 3682 3604 3637 1559 1933 2203 2413 2731 2776 3013 3089 3313 15-65 3658 3545 3584 1741 1866...

  • Page 14: Wiring Diagram

    KHP 20/300 ACS2 Manual 7. Wiring diagram...

  • Page 15: Location Of Installation

    KHP 20/300 ACS2 Manual 8. Installation Transport ² The unit is so heavy that it should be carried by two or more persons. Otherwise, it might cause injury and damage. Location of installation ² Enough space for installation and maintenance shall be preserved. The air inlet and outlet should be free from obstacles and strong wind.
  • Page 16 KHP 20/300 ACS2 Manual Water system piping ² In case of installing the unit at a place where outside temperature below freezing point, insulation must be provided for all hydraulic components. The handle of PTR valve should be pulled out once per half a year to make sure that there ²...

  • Page 17: Air Duct Connection

    KHP 20/300 ACS2 Manual RC3/4”. It is used to prevent water from flowing backwards. ² After water system piping connection, turn on the inlet and outlet valve to effuse the tank. When water flow smoothly out from outlet pipe, the tank is full, turn off all valves to check the pipeline leakage.
  • Page 18 KHP 20/300 ACS2 Manual Duct description Round duct Rectangle duct Dimension (mm) Ф190 190×190 Straight-line pressure drop ≤2 ≤2 (Pa/m) Straight-line length (m) ≤10 ≤10 Bent pressure drop (Pa) ≤2 ≤ 2 Bent’s quantity ≤3 ≤3 The duct’s resistance will decrease air-flow-rate, and capacity of unit will be decreased. ²...
  • Page 19 KHP 20/300 ACS2 Manual ² To smoothly drain condensate from unit, please install the unit at a horizontal floor. Otherwise, please ensuring the drain vent is at the lowest place. Recommending the inclination angle of unit to the ground should be no more than 2°. Fixing method Water heater fixing steps are as follows: ²...
  • Page 20 KHP 20/300 ACS2 Manual Electric connection ² The power supply should be an independent circuit with rated voltage. ² Power supply circuit should be earthed effectively. ² The wiring must be performed by professional technicians in accordance with national wiring regulations and this circuit diagram.
  • Page 21 KHP 20/300 ACS2 Manual Specifications of power supply Model name KHP 20/300 ACS2 Power supply 220-240V~, 50Hz, 1Ph Min. diameter of power supply cord (mm Earth cord (mm Manual switch capacity (A)/Fuse (A) 40/30 Creepage breaker 30mA, ≤0.1sec ² Please choosing the power cord according to above table, and it should comply with local electric standard.
  • Page 22 KHP 20/300 ACS2 Manual PCB I/O Ports description Name Meaning Name Meaning POWER Power supply DISPLAY CN27 DISPLAY TRANS IN Transformer Input Electronic Expansion Valve CN21 Upper Tank Water Temp Sensor 4-Way 4-Way Valve CN20 Middle Tank Water Temp Sensor FAN-H The outer Fan CN35...

  • Page 23: Water Affusion And Effusion

    KHP 20/300 ACS2 Manual 9. Water affusion and effusion Water affusion: If the unit is used for the first time or used again after emptying the tank, please make sure that the tank is full of water before turning on the power. ²...

  • Page 24: Trial Run

    KHP 20/300 ACS2 Manual 10. Trial run Checking list before trial- running: ² Correct installation of the system. ² Correct connection of water piping and wiring. ² Correct connection of air inlet and outlet. ² Condensate draining smoothly well. All the insulation work for all hydraulic part. ²...

  • Page 25: Maintenance

    KHP 20/300 ACS2 Manual 11. Maintenance Recommended regular maintenance table Checking Checking Checking content Action item frequency Air filter (inlet/outlet) Every month Clean the filter. Anode rod Every half year Replaced if it has been used out. Inner tank Every half year Clean the tank.

  • Page 26: Trouble Shooting

    KHP 20/300 ACS2 Manual Restart after a long term stop When the unit is restarted after a long term stop (trail running included), it is normal that outlet water is unclean. Keep the tap on and the water will be clean soon. 12.
  • Page 27 KHP 20/300 ACS2 Manual Malfunction and protection codes code Content Error of sensor T5U (Upper water temperature sensor). Error of sensor T5L. (Lower water temperature sensor). Tank and wired controller communication error. Evaporator temperature sensor T3 error. Ambient temperature sensor T4 error. Compressor discharge temperature sensor TP error.
  • Page 28 KHP 20/300 ACS2 Manual E4, E5, E6, E9 Notes: T3 is the evaporator temperature sensor. T4 is the ambient temperature sensor. TP is the compressor discharge temperature sensor. TH is the compressor suction temperature sensor. Notes: If the PCB current-induction-circuit check the current difference between L, N >14mA, system consider it as ‘electric leakage error’.
  • Page 29 KHP 20/300 ACS2 Manual Notes: E-heater open-circuit error means that IEH (Current difference E-heater on and off) <2A.
  • Page 30 KHP 20/300 ACS2 Manual High pressure protection Check whether the T5U (T5L) port on Fasten the port or replace PCB is loose or defective the sensor Fasten the port or replace Check whether the high pressure switch on the pressure switch PCB is loose or switch defective Replace the EXV or The EXV is defective or the EXV coil is loosen...
  • Page 31 KHP 20/300 ACS2 Manual High discharge temperature protection Check whether the sensor port on PCB is loose or Fasten the port or sensor defective (T5U, T5L, Tp, Th, T3) replace the sensor Full fill the tank Check whether the water tank is lack of water Check the fan over and Check whether the fan is running abnormally eliminate the obstacles...
  • Page 32 KHP 20/300 ACS2 Manual Compressor abnormally stopped protection Check whether the sensor port on PCB is loose or Fasten the port or sensor defective (Tp & T3) replace the sensor Replace the wire Check whether the power line of compressor is broken Check whether the capacitance of the Replace the capacitance compressor is ineffective...
  • Page 33 KHP 20/300 ACS2 Manual Compressor overloaded protection Fasten the port or Check whether the sensor port on PCB is loose or replace the sensor sensor defective (T5U, T5L, Tp, Th, T3) Restart the unit until Check whether power voltage exceeds 220-240V voltage recover Full fill the tank Check whether the water tank is lack of water...

  • Page 34: Vacation Function

    KHP 20/300 ACS2 Manual 13. Function Weekly Disinfect Under disinfection mode, the unit will immediately start to heat water up to 70 to kill the potential °C legionella bacteria inside water tank. ‘ ’ icon will light on the display screen during disinfection. Unit will quit disinfection mode if water temperature is higher than 70 °C and extinguish ‘...
  • Page 35 KHP 20/300 ACS2 Manual Electronic expansion Electronic expansion valve 1/8 valve Warm Warm water valve1/32 water valve Frequency Compressor frequency Version Host software version Version Display board software version Last error code Previous 1st error or protection code Previous 2nd error or protection code Model code: 01 Europe 190...
  • Page 36 KHP 20/300 ACS2 Manual C04: On/off electrical heater function Press to choose the “C04”, and press to enter the Electrical heater function, then press to choose ON/Off, display “Off” means close the sterilization function and press to confirm. After 15 seconds of no operation, the latest settings are valid. Press the during the setting process, the new setting is not saved (keep the original setting) and return to the interface C04.

  • Page 37: Auto Restart Function

    KHP 20/300 ACS2 Manual Main components’ movement when defrosting Max defrosting time 10min Compressor 4-way Valve 1-way Valve Auto adjust Auto adjust Auto adjust E-Heater 480P Auto adjust 4min Previous opening degree Keep pre-defrosting opening +16P for 4 minutes When T4≥5℃, conditions to inactivate defrosting cycle: 1.

  • Page 38: Operation

    KHP 20/300 ACS2 Manual code and alarm light. Press any button will unlock the screen (lighten). 14. Operation...

  • Page 39: Display Explanation

    KHP 20/300 ACS2 Manual Display explanation...
  • Page 40 KHP 20/300 ACS2 Manual Operation panel explanation Notes: Any press of button is effective only under button and display unlocked state. ① Mode ² Mode Selection Select the operation mode by pressing the mode button. The operation modes are: Hybrid Mode, E-heater Mode, Economy Mode and Vacation Mode.
  • Page 41 KHP 20/300 ACS2 Manual ②&⑧ INCREASE/UP & DECREASE/DOWN If screen is unlocked, corresponding value will increase by pushing ‘INCREASE’ or ‘DECREASE’. When setting temperature, by pressing ‘INCREASE’ (‘DECREASE’) more than 1 second, ² temperature value will be increase (decrease) continuously. ²...
  • Page 42 KHP 20/300 ACS2 Manual ⑤ CLOCK ² Set Clock...
  • Page 43 KHP 20/300 ACS2 Manual ⑥ TIMER ON &TIMER OFF NOTE： 1. During the setting process, press the time / ON/OFF key to enter the next ON/OFF setting 2. In the process of setting, press time / ON/OFF to enter the next part of this segment 3.
  • Page 44 KHP 20/300 ACS2 Manual ⑦ ENTER (Include CONFIRM/UNLOCK) ² If screen and buttons are unlocked, press it to upload setting parameters after setting any parameter: If press it beyond 10sec, please resetting all parameters. ² If screen and buttons are locked, press it for 3s to unlock them. ⑨ON/OFF (With LED indicator) ²...
  • Page 45 KHP 20/300 ACS2 Manual Use Your Appliance with the Comfort Home App Before you start, make sure that: 1.Confirm that the product has WiFi function. 2.Your smartphone is connected to home wifi network, and you know the network password. 3.Make sure you are next to home appliances. 4.The 2.4GHz (preferable) band wireless signal is enabled on your wireless router.
  • Page 46 KHP 20/300 ACS2 Manual ③ Add your appliance Tap the "+"icon to add home appliance to your Comfort Home account. ④ Choose Air Source Heat Pump Water Heater...
  • Page 47 KHP 20/300 ACS2 Manual ⑤ Choose Europe ⑥ Connected to the network Follow the instructions in the app to set up the WiFi connection. If the network connection fails, please refer to the App tips for operation.

  • Page 48: Accessories

    KHP 20/300 ACS2 Manual 15. Accessories Name Qty. Sharp Purpose Owner’s and Installation Installation and use instruction. Manual One way valve Prevent water from flowing backwards Adaptor Drain condensate water Fixed strip Preventing the unit from tipping over Weak electrical Modbus and Extension cable for connection cable set remote control switch...

  • Page 49: Resistance Characteristic Of Temperature Sensor

    KHP 20/300 ACS2 Manual 16. Resistance characteristic of temperature sensor Ø Resistance characteristic of ambient Temp., pipe Temp. and suction Temp. sensor. Temp. Resistance Temp. Resistance Temp. Resistance Temp. Resistance (°C) value (kΩ) (°C) value (kΩ) (°C) value (kΩ) (°C) value (kΩ) 115.266 12.6431...
  • Page 50 KHP 20/300 ACS2 Manual Ø Resistance characteristic of discharge temperature sensor Temp. Resistance Temp. Resistance Temp. Resistance Temp. Resistance (°C) value (kΩ) (°C) value (kΩ) (°C) value (kΩ) (°C) value (kΩ) 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 62.73 12.65 3.492 455.9...
  • Page 51 KHP 20/300 ACS2 Manual Ø Resistance characteristic of water tank temperature sensor Temp. Max. Resistance Normal Resistance value Min. Resistance Temp. Tol. (°C) value (kΩ) (kΩ) value (kΩ) (°C) 965.72 867.29 778.18 -1.78 1.73 907.28 815.80 732.88 -1.78 1.72 852.73 767.68 690.49 -1.77...
  • Page 52 KHP 20/300 ACS2 Manual Temp. Max. Resistance Normal Resistance value Min. Resistance Temp. Tol. (°C) value (kΩ) (kΩ) value (kΩ) (°C) 104.71 98.227 92.060 -1.34 1.34 99.722 93.634 87.839 -1.33 1.33 94.992 89.278 83.832 -1.31 1.32 90.510 85.146 80.028 -1.30 1.31 86.261 81.225...
  • Page 53 KHP 20/300 ACS2 Manual Temp. Max. Resistance Normal Resistance value Min. Resistance Temp. Tol. (°C) value (kΩ) (kΩ) value (kΩ) (°C) 18.128 17.600 17.072 -0.77 0.80 17.465 16.943 16.423 -0.79 0.83 16.830 16.315 15.801 -0.82 0.85 16.221 15.713 15.207 -0.84 0.88 15.637 15.136...
  • Page 54 KHP 20/300 ACS2 Manual Temp. Max. Resistance Normal Resistance value Min. Resistance Temp. Tol. (°C) value (kΩ) (kΩ) value (kΩ) (°C) 4.6990 4.4381 4.1880 -1.85 1.84 4.5579 4.3022 4.0572 -1.88 1.87 4.4218 4.1711 3.9312 -1.91 1.90 4.2903 4.0446 3.8096 -1.94 1.92 4.1633 3.9225...

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