Gree GRS-2.4/D270ANbA-K Installation And Service Manual
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Gree GRS-2.4/D270ANbA-K Installation And Service Manual

Air source heat pump water heater
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 Thank you for choosing Air Source Heat Pump Water Heater, please read this owner's manual carefully
before operation and retain it for future reference. If you have lost the Owner's Manual, please contact
the local agent or visit www.gree.com or send email to global@gree.com.cn or electronic version.
 GREE reserves the right to interpret this manual which will be subject to any change due to product
improvement without further notice.
 GREE Electric Appliances, Inc. of Zhuhai reserves the final right to interpret this manual.
Air Source Heat Pump Water
Heater
Installation and service manual
Models:
GRS-2.4/D270ANbA-K

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Summary of Contents for Gree GRS-2.4/D270ANbA-K

  • Page 1 If you have lost the Owner’s Manual, please contact the local agent or visit www.gree.com or send email to global@gree.com.cn or electronic version.  GREE reserves the right to interpret this manual which will be subject to any change due to product improvement without further notice.
  • Page 2 The interpretation for this manual is owned by the Gree Electric Appliances Inc. of Zhuhai, which is subject to change without prior notice.

  • Page 3: Table Of Contents

    Contents 1 Safety instructions and recommendations ........1 1.1 Symbols used ..................1 1.2 Safety instructions and recommendations ........2 2 Technical description ................ 5 2.1 general description ................5 2.2 Main parts ....................6 2.3 Operating principle ................8 2.4 Technical specifications ...............

  • Page 4: Safety Instructions And Recommendations

    Air Source Heat Pump Water Heater 1 Safety instructions and recommendations 1.1 Symbols used indicates the prohibited operations. indicates instructions that must be followed. indicates instructions to which special attentions must be paid. Notice: The special attentions must be paid. Caution: Risk of material damage.

  • Page 5: Safety Instructions And Recommendations

    Gree authorized maintenance voltage on nameplate of the center. unit, and capacity of the power supply, power cord or socket is suitable for input power of this unit.
  • Page 6 Improper repair may cause an electric shock hazard or a fire. For repair services, contact the Gree appointed service center. If the unit is not grounded, contact qualified personnel for installation. Do not connect the ground cable to the gas pipe,...
  • Page 7 Air Source Heat Pump Water Heater  Open the TP valve handle on a  It is normal that the TP valve  The pressure relief opening regular (about one month) basis drips. of the TP valve must be to check whether it is blocked. connected to one end of a Perform sewage disposal by securely fixed guide hose, and...

  • Page 8: Technical Description

    Air Source Heat Pump Water Heater 2 Technical description 2.1 general description  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 9: Main Parts

    Air Source Heat Pump Water Heater  Intelligent defrosting The unit is with freeze prevention and auto defrosting functions, which can solve the problem of icing and frost.  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 10 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 11: Operating Principle

    Air Source Heat Pump Water Heater 2.3 Operating principle Fig. 2-3 Working principle diagram for the air source water heater 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 12: Technical Specifications

    Air Source Heat Pump Water Heater 2.4 Technical specifications Model GRS-2.4/D270ANbA-K Rated Heating Capacity 2400 Rated Input Power Capacity Load Profile 2.58 Energy Efficiency Class Water Heating Energy Efficiency 105% Annual electricity consumption 1594 (average climate conditions) Maximum Input Power...

  • Page 13: Installation

    (3) If the users use the own prepared installation materials to install the air source water heater, Gree won't take any responsibilities for all the loss due to leakage of pipeline, drop of unit and poor installation.

  • Page 14: Basic Requirement For The Installation Position

    3.2 Basic requirement for the installation position If the product is installed at below places, it may cause malfunction for the air source water heater. If it’s unavoidable, please contact local Gree appointed maintenance center to purchase special models. (1) There are thermal sources, steam, flammable gas and explosive or volatile substances.

  • Page 15: Installation Space Requirement And Installation Drawing

    Air Source Heat Pump Water Heater 3.4 Installation space requirement and installation drawing 3.4.1 Main size Model GRS-2.4/D270ANbA-K A (mm) 1958 B (mm) C (mm) 235.5 D (mm) Fig. 3-1 Sketch map for main size 3.4.2 Installation requirement (1) Do not point the air outlet of water heater at the upwind direction.

  • Page 16: Water Pipe Connection

    Air Source Heat Pump Water Heater (3) The distance between water heater and surrounding wall or other shelter objects can’t be too small. The installation space should satisfy the drawing requirement. (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.

  • Page 17: Installation Sketch Map

    Air Source Heat Pump Water Heater pipeline and floor drain should be lower than the bottom part of water tank; otherwise, the water can’t drained completely. A cut-off valve must be installed at the drainage pipeline, and the cut-off valve must be installed at the position where is convenient for the operation.
  • Page 18 Air Source Heat Pump Water Heater 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. If this kind of installation way is adopted, please contact the after-sales installation personnel to select the communication cable with proper length;...
  • Page 19 Air Source Heat Pump Water Heater Fig. 3-2 Sketch map for Installation Instruction of Wired Controller...

  • Page 20: Wired Controller Installation

    Air Source Heat Pump Water Heater 3.8 Wired Controller Installation 3.8.1 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 21 Air Source Heat Pump Water Heater Fig. 3-4 Installation Diagram of Wired Controller Fig. 3-3 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 22 Air Source Heat Pump Water Heater temperature sensor should be separated from the power cable, and the 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.

  • Page 23: Electric Wire Connection

    Air Source Heat Pump Water Heater Name Name Rubber cushion(rainproof Panel of wired controller box) Screw Rainproof box Bottom plate of wired Installation box inside the wall controller Fig. 3-5 Rainproof Box Assy of Wired Controller Fig. 3-6 Disassembly Diagram of Rainproof Box of Wired Controller 4 Electric wire connection 4.1 Collocation of electric wire (1) Air source water heater is the type Ⅰ...
  • Page 24 (9) If the power cord is damaged, it must be replaced by manufacturer, service department or similar professional person to avoid hazard. Table 4-1 Power configuration table The minimum sectional Capacity area for power cord (mm Power Model of air type Live Neutral Earthing switch (A) wire wire wire 220V-240V GRS-2.4/D270ANbA-K ～50Hz...

  • Page 25: Electric Wiring, Connection

    Air Source Heat Pump Water Heater 4.2 Electric wiring, connection (1) Principle diagram for electric wiring (2) If the unit is equipped with earth wire, please connect one end of earth wire to earthing screw of water tank, and the other end to the earthing screw of the wiring box for the right side plate of main unit.

  • Page 26: 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, it may Check items cause below circumstances...

  • Page 27: Method For Adding Or Discharging Refrigerant

    Air Source Heat Pump Water Heater water before turning on the unit. (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.

  • Page 28: Unit Specification

    Please refer to the below curve for reference. Fig. 7-1 Correction diagram of water generation capacity for GRS-2.4/D270ANbA-K If pressing “RAPID” button on wired controller, the 1500W accessorial electric heating will be also started up; Compared with heating only with heat pump, water generation capacity will be increased 32L/h after starting up the accessorial electric heating.
  • Page 29 Air Source Heat Pump Water Heater turn on the unit for the first time), there may be turbid liquid flowing out of the faucet, which is the normal phenomenon. That phenomenon will disappear after for a while. (3) Power failure ①...

  • Page 30: Notices For The Operation In Winter

    Air Source Heat Pump Water Heater 8 Notices for the operation in winter (1) If the temperature is low in winter and the unit hasn't been started up for a long time, energize the unit for at least 8h before turning on the unit. (2) If the outdoor temperature is low in winter, do not cut off the power if the unit stops operation for a short time.

  • Page 31: Maintenance

    Air Source Heat Pump Water Heater 9 Maintenance 9.1 Water replenishing and water drainage for water tank (1) Water replenishing for water tank ① Cut off the power for the unit, open the cut-off valve on hot water exit pipe and the valve at the water using point; ②...

  • Page 32: Replacement Of Magnesium Rod

    Fig. 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 Gree appointed local dealer or appointed service center.

  • Page 33: Maintenance For The Unit

    7L/min. (2) User should have regular check and maintenance for heat pump water heater, if there is abnormal condition, please immediately contact Gree after-sales service for help so as to guarantee normal, safe and reliable unit operation. (3) Regular check and replace the magnesium bar is necessary. Customer can contact Gree serviceman for replacement.

  • Page 34: Malfunction Analysis

    If the water temperature is higher than 95℃, the thermostat will be activated to cut off the electric heating power. However, if the electric heating is abnormal, it needs to contact Gree service man to maintain or replace it. 11 Malfunction analysis Warning Please do not maintain the air source water heater by yourselves;...
  • Page 35 Table 11-3 If there’s below circumstances, please contact Gree appointed maintenance center. Malfunction phenomenon Malfunction analysis The water heater stops operation and...
  • Page 36 Abnormal operation for the unit temperature is high （＞10℃） After-sales service If there’s quality or other problems for the Gree products, please contact with Gree local appointed maintenance center. If this manual is lost, please contact with Gree local appointed dealer.
  • Page 37 GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China, 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 E-mail: gree@gree.com.cn www.gree.com...

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