GREE DC Inverter Heat Pump Condensing Unit Technical Sales Guide

1 MODELS LIST

1.1 Outdoor Unit

1.2 Indoor Unit

2 NOMENCLATURE

The model nomenclature follows a specific structure to denote unit features. For example, GU D 24 W 2 Nh G D (U) represents: 1. Product code (Gree U-Match), 2. Motor type (Omit=AC, D=DC), 3. Cooling capacity code (Nominal capacity inkBtu/h), 4. Unit type (W=Outdoor, AH=Air handler), 5. Communication protocol (Omit=485, 1=L1-L2, 2=24V, 3=Other), 6. Refrigerant type (R32-Nh), 7. Design number (A, B, C, etc.), 8. Power supply (D=208/230V ~60Hz), 9. Exporting country (U=North America).

Note: 1 Ton = 12000Btu/h = 3.517kW

3 FUNCTION

3.1 Description

This product is a non-communicating variable residential air conditioner designed for the North American market, featuring a low-temperature heating function. It incorporates multiple technologies, including two-stage EVI and DC inverter control, offering characteristics such as efficient low-temperature heating, energy savings, and strong engineering adaptability. It is suitable for use in homes, villas, and other residential spaces.

3.2 Features - Outdoor Units

• Two-stage EVI technology provides effective low-temperature heating.
• Communication-free control technology with self-learning and adjustment capabilities based on the environment.
• Strong engineering adaptability and 24V communication-free control.
• Wide operating range suitable for high and low-temperature environments.
• Dual electric heating belts preheat the compressor at low temperatures, preventing liquid slugging and ensuring reliable starts. Electric heating belts also defrost the chassis to prevent fan issues from ice buildup.
• Outdoor unit condensers feature gold corrosion-resistant fins and a side discharge design for a smaller footprint. The compressor is housed in an independent sealed chamber for sound insulation.

3.3 Indoor Units

Airflow Patterns for Extra Comfort: Units can connect to multiple supply-air outlets via ducting to ensure even room temperature and humidity distribution. All units include easily accessible filters from the rear.

Flexible Installation: Supports air-supply or air-return configurations, with flexible options for condensation water exit direction.

Easy Maintenance: Evaporator coils are constructed with quality inner groove copper tubes and hydrophilic aluminum sheets, featuring an easy and reliable configuration design for convenient maintenance.

Versatile Functions:

• Time display function
• Timer function
• Memory function
• °F/°C switch function
• Temperature display function
• E-heater function
• 4-way valve energizing function

Includes an image of a thermostat displaying temperature and humidity.

4 PRODUCT DATA

4.1 Product Data at Rated Condition (Air Handler)

This section provides detailed performance data for the air handler units at rated conditions.

Indoor Unit Details

Outdoor Unit Details

Notes: a. The design of this unit conforms to the requirements of AHRI 210/240-2023 standard. b. The air volume is measured at the relevant standard external static pressure. c. Cooling (heating) capacity stated above is measured under nominal working conditions corresponding to standard external static pressure. Parameters are subject to change with product improvements; values on the nameplate shall prevail.

Operating Conditions

Piping Length: 24k~60k units: 7.5m (24.6ft)

4.2 Operation Range

4.3 Cooling Performance

Notes: ESP: External Static Pressure, DB: Dry Bulb Temperature, WB: Wet Bulb Temperature, TC: Total Capacity, SHC: Sensible Heat Capacity.

Air Handler FXE24HP230V1R32AH Cooling Performance Table:

Air Handler FXE30HP230V1R32AH Cooling Performance Table:

Air Handler FXE36HP230V1R32AH Cooling Performance Table:

Air Handler FXE48HP230V1R32AH Cooling Performance Table:

Air Handler FXE60HP230V1R32AH Cooling Performance Table:

5 FAN CHARACTERISTICS

Fan performance curves are provided for various indoor unit models (FXE24HP230V1R32AH, FXE30HP230V1R32AH, FXE36HP230V1R32AH, FXE48HP230V1R32AH, FXE60HP230V1R32AH). These graphs illustrate the relationship between Airflow (CFM) and Static Pressure (Inches W.C.) for different fan speeds (Speed 1 through Speed 8).

Graphs showing Airflow (CFM) vs. Static Pressure (Inches W.C.) for FXE24HP230V1R32AH, FXE30HP230V1R32AH, FXE36HP230V1R32AH, FXE48HP230V1R32AH, FXE60HP230V1R32AH.

6 DIMENSION

6.1 Indoor Units

Air Handler Dimensions:

Diagram showing the dimensions (W, D, H, A, B) of the indoor air handler units.

Note: Minimize refrigerant tubing length during installation. Do not install the air handler above or below the condenser in a way that violates condenser instructions. Ensure a minimum of 24" service clearance in front of the unit.

6.2 Outdoor Units

Outdoor Unit Dimensions:

Diagram showing the dimensions (A, B, C, D, E, F, G) of the outdoor units.

Installation Location Requirements:

1) When one outdoor unit is to be installed:

Diagram illustrating installation clearances (a, b, c, d, e, H, Hb, Hd) for a single outdoor unit.

2) When two or more outdoor units are to be installed side by side:

Diagram illustrating installation clearances (a, b, c, d, e, H, Hb, Hd) for multiple outdoor units installed side-by-side.

3) When outdoor units are installed in rows:

Diagram showing installation clearances for outdoor units installed in rows.

4) When outdoor units are installed one above another:

Diagram showing installation clearances for outdoor units installed one above another.

6.3 Dimension – Controller

Thermostat (Optional) Dimensions:

Diagram showing the dimensions of the optional thermostat controller.

Dimensions: 132mm (Width) x 105.5mm (Height). Depth varies from 20mm to 33mm. Back panel dimensions: 83mm x 83mm.

7 WIRING DIAGRAM

7.1 Field Wiring Diagrams

Outdoor Units:

Electrical wiring of outdoor units: This diagram shows the connection from the breaker to the outdoor unit (L1, L2, G) and from the outdoor unit to the indoor unit (R, C, Y, B, D, L, H1, H2).

24V mode wiring: Similar to electrical wiring, showing connections for 24V mode.

RS485 mode wiring: Indicates connections for RS485 communication.

Air Handler Wiring:

This diagram illustrates the wiring for an air handler, including connections from the breaker to the indoor unit (D, B, W2/AUX, R, C, G, DH, L, Y, Y1, H1, H2) and to the outdoor unit (R, C, Y, B, D, L, H1, H2), as well as connections to a temperature controller.

Wiring for Heating Mode: A separate diagram shows wiring for units with heating capabilities, including connections to breakers and the indoor/outdoor units, with notes on specific terminals (Y, B, D, R, C, G, DH, L, Y1, H1, H2).

Notes on wiring: Y=Compressor control signal, B=4-way valve control signal, D=Defrosting signal, R=24V AC power supply, C=24V common, G=Indoor unit fan signal, W2/AUX=Heater control signal, L=Refrigerant leakage protection signal, DH=Initial signal, Y1=Thermostat and compressor output signals, H1/H2=RS485 communication. For cooling-only units, B and D terminals are not needed. D signal is sent during outdoor defrost to prevent cold winds. L must be connected. Breakers must be incorporated in fixed wiring per rules. M6 screws required for grounding when installing electric heating.

7.2 Specification of Power Supply Wire and Air Switch

7.2.1 Outdoor Units

7.2.2 Indoor Units (Air Handler)