MegaLife ML-RS-2.4/D270ANbA-K Owner's Manual
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MegaLife ML-RS-2.4/D270ANbA-K Owner's Manual

Air source heat pump water heater
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Owner's Manual
Original Instructions
Air Source Heat Pump Water Heater
Models:
RS-2.4/D270ANbA-K

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Summary of Contents for MegaLife ML-RS-2.4/D270ANbA-K

  • Page 1 Owner's Manual Original Instructions Air Source Heat Pump Water Heater Models: RS-2.4/D270ANbA-K...
  • Page 3 To Users Thank you for selecting our product. Please read this instruction manual carefully before installing and using the product, so as to master and correctly use the product. In order to guide you to correctly install and use our product and achieve expected operating effect, we hereby instruct as below: (1) This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience...
  • Page 4 necessary revision to the product from time to time due to the reason of sales or production, and reserve the right to revise the contents without further notice. (7) The final right to interpret for this instruction manual belongs to Exception Clauses Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons:...

  • Page 5: Table Of Contents

    Contents 1 Safety Notices (Please be sure to abide) ......1 2 Technical description ............6 2.1 general description ............... 6 2.2 Main parts ..................7 2.3 Operating principle ............... 9 2.4 Technical specifications .............. 10 3 Installation ................11 3.1 Important hint ................11 3.2 Basic Requirement on Installaion Location ........

  • Page 6: Safety Notices (Please Be Sure To Abide)

    Air Source Heat Pump Water Heater 1 Safety Notices (Please be sure to abide) WARNING: If not abide strictly, it may cause severe damage to the unit or the people. NOTICE: If not abide strictly, it may cause slight or medium damage to the unit or the people.
  • Page 7 Air Source Heat Pump Water Heater Water tank must install TP valve as required, the TP valve provided by user; Try to use tap water, avoid not using well water or river water; To guarantee water quality, clean the water tank periodically as required; Water tank shall be installed in places without rainwater.
  • Page 8 Air Source Heat Pump Water Heater Safety Notices Graphic symbol ★ Before to clean, please cut off the power supply. Otherwise, an electric shock hazard may be caused. ★ The power supply must adopt special circuit with leakage switch and enough capacity. ★...
  • Page 9 Air Source Heat Pump Water Heater Safety Notices Graphic symbol ★ Keep the chemical spray, gas tank or others similar at least 1m away from the unit, otherwise it would lead to fire hazards or explosion. ★To improve durability of the water tank, a Magnesium rod is installed inside the water tank.
  • Page 10 Air Source Heat Pump Water Heater Safety Notices Graphic symbol ★ The pressure relief opening of the TP valve must be connected to one end of a securely fixed guide hose, and the other end is connected to the floor drain.

  • Page 11: Technical Description

    Air Source Heat Pump Water Heater 2 Technical Description 2.1 General Description (1) High Efficiency and Energy-saving This unit adopts the adaptive control of the electronic expansion valve, whose opening angle will be adjusted automatically according to the working condition of the unit.

  • Page 12: Main Parts

    Air Source Heat Pump Water Heater (6) Intelligent defrosting The unit is with freeze prevention and auto defrosting functions, which can solve the problem of icing and frost. (7) High water temperature The highest heating temperature for the heat pump can be up to 70℃, which can satisfy the requirement for different places and users.
  • Page 13 Air Source Heat Pump Water Heater 2.2.2 Main Parts 1 Compressor 2 Inspiration temperature sensor 3 Refrigerant-affusing nozzle 4 Wiring box 5 Controller 6 Faceplant nog 7 Wire hole 8 Water temperature sensor 9 Magnesium rod 10 Water temperature controller 11 Electric heating component 12 Water temperature sensor 13 Cold water inlet...

  • Page 14: Operating Principle

    Air Source Heat Pump Water Heater 2.3 Operating Principle Figure 2-3 Air source water heater operating principle The air source water heater is driving the compressor by some part of electricity by using the heat pump principle. Through the thermal circuit, absorb the heat from the low-grade energy (air) in the surrounding environment, transmit it to the heat exchanger of water tank and then release it to the water inside the water tank for heating water.

  • Page 15: Technical Specifications

    Air Source Heat Pump Water Heater 2.4 Technical Specifications Model RS-2.4/D270ANbA-K Rated Heating Capacity 2400 Rated Input Power 3.50 Capacity Load Profile (**) 2.61 (**) Energy Efficiency Class (**) Water Heating Energy Efficiency 105% Annual electricity consumption 1594 (average climate conditions) Maximum Input Power 1300+1500W (Electric Heater) Outlet Water Temperature...

  • Page 16: Installation

    Air Source Heat Pump Water Heater (3) (***) Value obtained indoor placement, with 2m long suction and backflow conduits, as per EN 12102-2008, (EU) No 814-2013. (4) The installation of suction and backflow conduits on the heat pump lessens its performance. (5) Under RAPID function, electric heater helps to heating water.

  • Page 17: Basic Requirement On Installaion Location

    Air Source Heat Pump Water Heater 3.2 Basic Requirement on Installaion Location The unit will go into faults when installed in the locations listed below. If appointed service center for further service. inevitable, please contact the (1) Where there are intense heat sources, steam, inflammable or explosive gas or volatile substances.

  • Page 18: Installation Space Requirement And Installation Diagram

    Air Source Heat Pump Water Heater 3.4 Installation Space Requirement and Installation Diagram 3.4.1 Main Size Figure 3-1 Sketch map for main size D(mm) Model A(mm) B(mm) C(mm) RS-2.4/D270ANbA- K 1958 235.5 3.4.2 Installation Requirement (1) Do not point the air outlet of water heater at the upwind direction. (2) The water heater should be installed at the places where the ambient temperature is above 0℃;...

  • Page 19: Water Pipe Connection

    Air Source Heat Pump Water Heater (4) If install a rain shed for protecting the water heater, please make sure that it won’t affect the heat radiation and absorption for the heat exchanger. (5) The water heater should be installed at the solid place uprightly. Fix the water heater with ground bolt if necessary.

  • Page 20: Unit Installation Diagram

    Air Source Heat Pump Water Heater 3.6 Unit Installation Diagram 3.7 Installation Instruction of Wired Controller...
  • Page 21 Air Source Heat Pump Water Heater (1) Fig. A is the standard installation way of wired controller. The wired controller is installed on the unit before ex-factory; (2) Fig. B is the detached installation way of wired controller. Long communication wire shall be equipped to install the wired controller on the wall.
  • Page 22 Air Source Heat Pump Water Heater Figure 3-2 Sketch map for Installation Instruction of Wired Controller...

  • Page 23: Thermal Insulation For Air Outlet

    Air Source Heat Pump Water Heater 3.8 Thermal Insulation for Air Outlet (1) When installing the unit with air duct, please conduct thermal insulation for air outlet and air duct to prevent condensate water; (2) When installing the unit without air duct, please install the equipped thermal insulating foam at the air outlet to prevent condensate water at air outlet.

  • Page 24: Wired Controller Installation

    Air Source Heat Pump Water Heater 3.9 Wired Controller Installation 3.9.1 Requirements for Wired Controller Installation Locations (1) Do not install the wired controller in a wet place or a place exposed to direct sunlight. (2) Do not install the unit or wired controller of the air source water heater in a place susceptible to electromagnetic interference.
  • Page 25 Air Source Heat Pump Water Heater Figure 3-4 Installation Diagram of Wired Controller Figure 3-4 is the installation diagram of wired controller. Cut off power supply of heavy-current wire embedded in mounting hole in the wall before installation. The installation method is as below: Pry the removal port with straight screwdriver to separate the front panel and soleplate of wired controller;...
  • Page 26 Air Source Heat Pump Water Heater distance between them should be greater than 20 cm. Otherwise, the unit may not be able to communicate properly. (2) If the unit is installed in a place susceptible to electromagnetic interference, the communications line of the wired controller and the line of the temperature sensor must be used, shielded twisted pair.
  • Page 27 Air Source Heat Pump Water Heater Figure 3-5 Rainproof Box Accessories of Wired Controller Name Name Rubber cushion(rainproof Panel of wired controller box) Screw Rainproof box Bottom plate of wired Installation box inside the wall controller Figure 3-6 Disassembly Diagram of Wired Controller...

  • Page 28: Electrical Installation

    Air Source Heat Pump Water Heater 4 Electrical Installation 4.1 Precautions on Safety (1) This air source water heater is class Ⅰ appliance. Ensure that wire layout is performed by professional personnel according to national wiring rules. (2) Ensure that a switch for all-pole disconnection is available for the fixed lines and is directly connected to wiring terminals of the power supply.

  • Page 29: Connection Of Electric Wire

    Air Source Heat Pump Water Heater (9) If the power flexible wire is damaged, it must be replaced by professional personnel of the vendor, maintenance center of the vendor, or relevant other department to avoid dangers. Table 4-1 Power configuration table The minimum sectional Capacity area for power cord (mm...

  • Page 30: Debugging For The Complete Unit

    Air Source Heat Pump Water Heater 5 Debugging for the Complete Unit When the waterway system and the electric wires for air source water heater are installed well, please check the unit according to below table. Table 5-1 Check table for the unit If the unit is not installed properly, Check items it may cause below circumstances...

  • Page 31: Method To Supplement Or Discharge Refrigerant

    Air Source Heat Pump Water Heater (2) Energize the complete unit After be energized, the wired controller will give out a sound. Observe whether the display on the wired controller is normal. The wire controller is with memory function. For the first time be energized, wire controller may display OFF or standby. (3) Engineering parameters setting on wire controller System clock time setting, disinfection function setting, etc.

  • Page 32: Unit Performance

    Air Source Heat Pump Water Heater 7 Unit Performance 7.1 Water Heating Capacity During heating, the unit absorbs heating capacity in the air from outdoor, then release it to the water to heat up water on the water tank. Once outdoor temperature decreases, heating capacity might have certain decay.

  • Page 33: Operation Notices In Winter

    Air Source Heat Pump Water Heater and will disappear a while later. (3) Power failure 1) When power failure occurs during operation, the unit will stop. 2) The displayer has memory function. 3) Please switch off the power switch when the unit malfunctions occur because of the thunder and automobile radio.

  • Page 34: Maintenance

    Air Source Heat Pump Water Heater (3) When the unit is not to be used for a long period, drain the water tank and pipe according to discharge operation, otherwise, water system will be damaged. After draining water and to reuse the unit again, pours water to the water tank fully before starting up.

  • Page 35: Periodic Cleaning For Water Tank

    Air Source Heat Pump Water Heater 9.2 Periodic Cleaning for Water Tank Please clean the water tank periodically to get good-quality water according to the following steps: (1) Cut off the power supply. (2) Close the cut-off valve at the water inlet of the water tank. (3) Open the cut-off valve at the hot water drain outlet and valve in user water use site.

  • Page 36: Maintenance Of The Unit

    Air Source Heat Pump Water Heater Figure 9-1 Sketch map for the replacement operation for the magnesium rod NOTICE! The replacement for the magnesium rod must be conducted by the professional person. Do not replace it by yourself. Please contact appointed local dealer or appointed service center.
  • Page 37 Air Source Heat Pump Water Heater (4) Cut off the power supply prior to any maintenance or services. A unprofessional personnel is not allowed to adjust or service the heat pump water heater. (5) Improper operation might cause scald due to hot water. Water heating without enough water might produce high-temperature steam or hot water, which might cause serious scald.

  • Page 38: Malfunction Analysis

    Air Source Heat Pump Water Heater 11 Malfunction Analysis WARNING! Do not repair the unit by yourself, otherwise it would lead to electric shocks or fire hazards. Instead, please contact the appointed service center and it is better to check the items listed in the table below at first. Table 11-1 Malfunction phenomena Troubleshooting...
  • Page 39 Air Source Heat Pump Water Heater Table 11-2 When the following situations occur, please contact with authorized maintenance center Error phenomenon Error analysis The unit is shut down and E1 is System high pressure protection displayed on the controller The unit is shut down and E4 is Discharge protection displayed on the controller The unit is shut down and E6 is...

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