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Thank you for choosing Air Conditioners, 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.
GMV5 HR Heat Recovery Cooling and
Heating Mode Exchanger
Owner's Manual
Air Conditioners
Models:
NCHS1B
NCHS4B
NCHS8B
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Table of Contents
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Summary of Contents for Gree NCHS1B
- Page 1 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 Preface For correct installation and operation, please read this manual carefully. Before reading the manual, please note that: (1) The design standard of multi VRF system comforms to related standard of sales countries. (2) To ensure safety when operating this system, please strictly follow the instructions in this manual.
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Page 3: Table Of Contents
Contents 1 Safety Precautions ..........................1 2 Product Introduction ..........................3 2.1 Names of Main Parts ........................3 3 Preparation before installation ......................5 3.1 Standard Accessory ........................5 3.2 Installation Site ..........................5 3.3 Selection Requirement for Communication Wire ..............6 3.4 Wiring Requirment.......................... -
Page 4: Safety Precautions
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger 1 Safety Precautions Never do this! This symbol indicates possibility of death or serious injury. Always do this! This symbol indicates possibility of personal injury or property damage. Installation should be Please install the unit performed by distributor or according to instructions in... - Page 5 Gree Electric Appliances, Inc. of Zhuhai will not assume responsibility for any personal injury or property loss caused by improper installation, improper test running, and unnecessary repair or not following the instructions of this manual.
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Page 6: Product Introduction
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger 2 Product Introduction 2.1 Names of Main Parts One-to-one Cooling and Heating Mode Exchanger One-to-more Cooling and Heating Mode Exchanger ① ② ③ Connection pipe of outdoor Name Drainage pipe Connection pipe of indoor unit unit... - Page 7 GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger 2.2 Parameter table： Model Unit NCHS1B NCHS4B NCHS8B Rated voltage 220V~240V 220V~240V 220V~240V Max. quantity of connecting indoor unit Max. branch quantity of connecting indoor unit Max. quantity of connecting indoor unit for each branch Max.
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Page 8: Preparation Before Installation
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger 3 Preparation before installation Caution！ The product photos are only for reference. The unit for size is mm, except otherwise stated. 3.1 Standard Accessory Please use below provided standard parts according to requirement. Name Photo Q’ty... -
Page 9: Selection Requirement For Communication Wire
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger Fig 3.1 Caution: ① The installation of the unit must compyu with national and local safety regulations. ② Users can’t install the unit by theirselves, because the intallation quality will affect the operation directionly. - Page 10 GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger Figure 3.2 Total length of communication wire between indoor unit Wire diameter Type of wire Material standard Remarks and another indoor/outdoor unit: L(m) 1.if the wire diameter is enlarged to 2×1mm ,the total communication length can reach 1500m.
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Page 11: Wiring Requirment
Min sectional Model Power air switch area for earthing area for power wire (mm cord(mm 220~ 240 V NCHS1B 50/60Hz 220~ 240 V NCHS4B 50/60Hz 220~ 240 V NCHS8B 50/60Hz Caution: ① Above circuit breaker and power cord specition are selected according to the max power (max currrect). -
Page 12: Installation Instruction
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger 4 Installation Instruction 4.1 Installation of Cooling and Heating Mode Exchanger 4.1.1 Dimension of Outdoor Unit and Mounting Hole Position After the unit is installed, a maintenance port should be reserved at the electric box side of unit for maintenance. - Page 13 GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger Fig 4.1.3 Due to the structure of installation space, the mode exchanger needs a maintenance port. Please reserve another maintenance port for mode exchanger. Fig 4.1.4...
- Page 14 GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger Unit outline dimension： NCHS1B outline and installation dimension Fig 4.1.5 NCHS4B outline and installation dimension Fig 4.1.6 NCHS8B outline and installation dimension...
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Page 15: Hole-Drilling For Bolt And Bolt Instalaltion
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger Fig 4.1.7 4.1.2 Hole-drilling for Bolt and Bolt Instalaltion （1）Stick the installation template at the installation position flatly, drill 4 holes at the installation postion basing on the installation template. As shown in fig 4.1.8. Please refer to the diameter of expansion bolt for the diameter of hole with depth of 60-70mm. -
Page 16: Hang Unit
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger 4.1.3 Hang unit Hang the unit at the bolt on the ceiling of room. Please use special nut for securing the unit. Fig 4.1.11 Caution: ① Before operation, please prepare all pipelines (connection pipe, drainage hose) and wires (connection wire for wired controller, connection wire for indoor unit). -
Page 17: Pipe Connection
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger schematics below): ME UNIT Plan view Branch pipe Wrong connection ME UNIT Branch pipe Plan view Branch pipe ME UNIT Top view Right connection Fig 4.1.13 4.2 Pipe Connection 4.2.1 Precautions for the Installation of Connection Pipe （1）Please comply with the following rules during pipe connection: Connection pipe should be as short as possible, so is the height difference between indoor and outdoor units. -
Page 18: Selection Of Y-Type Branch
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger 4）Support the connection pipe with bracket. 5）The degree of curvature of pipeing can’t be too small, otherwise, the pipe may be broken. Installer should use pipe bender to bend the pipe. 6）When connecting indoor unit and connection pipe, do not pull the big joint and small joint of indoor unit forcibly. -
Page 19: Thermal Insulation For Pipeline
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger （4） Branch shall be insulated by insulating material that can bear 120° or even higher temperature. The attached foam of branch cannot be taken as insulating material. 4.2.3 Thermal insulation for pipeline （1）For multi VRF system, every copper pipe should be labeled so as to avoid misconnection. - Page 20 GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger Schematic diagram of piping connection： 4.2.5 Connection of indoor unit 4.2.5.1 Connection for single indoor unit with capacity of less than 14kw Each branch is to connect to a set of indoor units with the same mode. For the branch does not connect to indoor unit, make sure that the welding is reliable without leaking of refrigerant.
- Page 21 GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger 4.2.5.2 Connecting method for indoor unit with capacity of over 14kw When connecting to the indoor unit with capacity of over 14kw, it is not allowed to connect with only one branch; it must use two branches controlled by the same mainboard for parallel connection. Parallel connection can be conducted as below: branch 1 and branch 2 are connected in parallel, branch 3 and branch 4 are connected in parallel, branch 5 and branch 6 are connected in parallel, branch 7 and branch 8 are connected in parallel;...
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Page 22: Installation And Test For Drainage Hose
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger 4.3 Installation and Test for Drainage Hose 4.3.1 Precaustions for the Installation of Drainage Hose ⑪ As for the drainage hose, the shorter the better. The drainage hose should be kept 1%～2% at least gradient for draining out the condensate water . - Page 23 GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger ② insulating sponge (accessory) ⑭ When multiple drainage pipe sare connected together, connection pipes as shown in fig 4.3.4. Fig 4.3.4 ⑮ For the indoor unit with big pressure at the outlet of drainage pipe, water trap must be installed. Fig 4.3.5 ⑯...
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Page 24: Drainage System Test
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger ⑳ The installation height for the lifting pipe of draiange should be less than 850mm. The drainage direction of lifting pipe are suggested to set 1°～2° gradient. If lifting pipe of drainage and the unit composed a right angle, the lifting height must be less than 800mm. -
Page 25: Cable Connection
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger there’s water leakage. ⑬ When drainage system test is finished, please perform thermal insulation for drainage hose and pipe clamp. ♦ Model with water pump ⑪ Fill the water tray of indoor unit with some water and the method is as below: 1）... -
Page 26: Connection Of Cable And Terminal Of Wiring Board
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger breaker. ⑦All wiring must use pressure terminal or single wire. If connect the stranded wire to the wiring board directly, it may cause fire. ⑧ Do not let cable connect refrigerant pipe and compressor or fan. ⑨... -
Page 27: Connect Power Cord
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger 5.2 Connect Power Cord Caution: The mode exchanger in the same system must be supplied power uniformly. Fig 5.2 Remark: The maximum quantity “n” of indoor unit is decided by the capacity of indoor unit, please refer to capacity of unit. -
Page 28: Conenct Communication Wire Of Indoor Unit And Outdoor Unit
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger ⑪ Use single-phase power air conditioner 1）Remove electric box cover of indoor unit. 2）Pass the power cord through rubber ring. 3）Connect power cord to “L，N” terminal and earthing screw. 4）Fix the power cord with wire-fixing clamp. ⑫... -
Page 29: Routine Maintenance
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger Fig 5.3.3 6 Routine Maintenance Caution: ① Only clean the air conditioner after turning off the unit and cutting off the power. Otherwise, it may cause electric shock or injury. ② When cleaning the air conditioner, please stand on the solid platform. ③... -
Page 30: Maintenance After Seasonal Use
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger ⑫ Check whether ground connection is reliable or not; ⑬ Check whether the wires are connected well; ⑭ After getting through power, check whether there’re characters on the screen of wire controller. 6.2 Maintenance after Seasonal Use ⑪... - Page 31 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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