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Gree GRS-CQ4.0Pd/NhG3-E User Manual

Gree GRS-CQ4.0Pd/NhG3-E
81 pages
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Change for life
Air-to-water Heat Pump
GRS-CQ4.0Pd/NhG3-E
GRS-CQ6.0Pd/NhG3-E
GRS-CQ8.0Pd/NhG3-E
GRS-CQ10Pd/NhG3-E
GRS-CQ8.0Pd/NhG3-M
GRS-CQ10Pd/NhG3-M
GRS-CQ12Pd/NhG3-E
GRS-CQ14Pd/NhG3-E
GRS-CQ16Pd/NhG3-E
GRS-CQ12Pd/NhG3-M
GRS-CQ14Pd/NhG3-M
GRS-CQ16Pd/NhG3-M
GRS-CQ4.0Pd/NhG4-E
GRS-CQ6.0Pd/NhG4-E
GRS-CQ8.0Pd/NhG4-E
GRS-CQ10Pd/NhG4-E
GRS-CQ8.0Pd/NhG4-M
GRS-CQ10Pd/NhG4-M
GRS-CQ12Pd/NhG4-E
GRS-CQ14Pd/NhG4-E
GRS-CQ16Pd/NhG4-E
GRS-CQ12Pd/NhG4-M
GRS-CQ14Pd/NhG4-M
GRS-CQ16Pd/NhG4-M
Owner's Manual
Original Instructions
Air Conditioners
MONOBLOC
TYPE
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Gree GRS-CQ4.0Pd/NhG3-E Specifications

General IconGeneral
Cooling Capacity4.0 kW
Cooling Capacity (BTU)13648 BTU
Energy Efficiency Ratio (EER)3.21
Energy Efficiency Ratio (Heating)3.61
RefrigerantR32
Power Supply220-240V, 50Hz
Noise Level (Indoor)42 dB(A)
Noise Level (Outdoor)52 dB(A)
TypeSplit

Summary

Safety Notices

Notes

General notes and warnings for user safety and product care.

Correct Disposure

Guidelines for responsible disposal of the product according to EU regulations.

Diagram of the Operating Principle

Operating Principle of the Unit

Nomenclature

Installation Example

CASE 2: Connecting Sanitary Water Tank and Under-floor Coil

Details on connecting the unit to both a sanitary water tank and an under-floor heating system.

CASE 3: Connecting Sanitary Water Tank, Under-floor Coil and FCU

Shows how to connect the unit to a water tank, under-floor coil, and Fan Coil Unit (FCU).

Main Components

Installation Guideline of Monobloc Unit

Instruction to installation

General instructions and codes to follow during the unit's installation process.

Installation of monobloc unit

Guidelines for selecting the installation location and performing the monobloc unit setup.

Installation of Hydraulic Unit

Available external static pressure of outlet

Curves showing the relationship between external static pressure and flow rate for different models.

Ambient temperature and leaving water temperature upper limit

Graph indicating the operational limits for ambient and water temperatures.

Water volume and expansion vessel pressure

Details on water volume requirements and the corresponding expansion vessel pressure.

The method of calculating the charging pressure of expansion vessel

Formula and method for calculating and adjusting the expansion vessel's charging pressure.

Selection of expansion vessel

Formula for selecting the correct expansion vessel based on system parameters.

Remote Air Temperature Sensor

Thermostat

How to Wire Thermostat

Step-by-step guide for wiring the thermostat to the unit's control system.

2-Way Valve

How to Wire 2-Way Valve

Instructions for connecting the 2-way valve, including wiring diagrams and terminal assignments.

3-Way Valve

General Information (about 3-way valve)

Describes the role and specifications of the 3-way valve in the system.

Other Thermal

Optional Electric Heater

Optional electric heater installation

Procedures for installing the optional electric heater and its associated water temperature sensor.

Gate-controller

Charging and Discharging of Refrigerant

Leak Detection Methods

Recommended methods for detecting refrigerant leaks in the system.

Installation of Insulated Water Tank

Installation measure

Guidelines for the physical placement and mounting of the insulated water tank.

Notes (for installation measure)

Additional important notes regarding water tank installation clearance and connections.

Outline dimension and parameter of water tank

Technical specifications and dimensions for different models of the water tank.

Connection of waterway system

Detailed instructions for connecting the water pipes for the unit and water tank.

Requirements on water quality

Specifies the acceptable water quality parameters for optimal unit performance.

Electric wiring work

Instructions and principles for performing electrical wiring for the water tank system.

Wiring Diagram

Control board

Identification and function of terminals and connectors on the main control board.

Electric wiring

Details on the unit's electrical wiring, including principles and terminal board layouts.

Commissioning

Check before startup

A checklist of essential items to verify before the initial startup and debugging of the unit.

General Evaluation: Debugging

Criteria and process for evaluating the unit's performance after installation and during debugging.

Test run

Procedures for performing a test run to ensure the unit operates correctly and to identify issues.

Daily Operation and Maintenance

Recovery

Recommended practices for safely recovering refrigerant from the system during servicing or decommissioning.

Decommissioning

Steps and precautions for safely taking the unit out of service and preparing it for disposal or storage.

Notice before seasonal use

Checks and preparations needed before operating the unit after a period of inactivity or for seasonal use.

Safety considerations

Important safety considerations related to the unit's operation and maintenance.

Maintenance of the water tank

Procedures for maintaining the insulated water tank, including water handling and cleaning.

Maintenance of the unit

Guidance on unit maintenance, including error codes, troubleshooting, and disassembly.

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