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Owner's Manual Original Instructions Commercial Air Conditioners Multi Variable Air Conditioners Ducted Type Indoor Unit Models: GMV-ND07PHS/B-T(U) GMV-ND09PHS/B-T(U) GMV-ND12PHS/B-T(U) GMV-ND15PHS/B-T(U) GMV-ND18PHS/B-T(U) GMV-ND22PHS/B-T(U) GMV-ND24PHS/B-T(U) GMV-ND30PHS/B-T(U) GMV-ND36PHS/B-T(U) GMV-ND42PHS/B-T(U) GMV-ND48PHS/B-T(U) GMV-ND54PHS/B-T(U) GMV-ND72PH/B-T(U) GMV-ND96PH/B-T(U)
Preface For correct installation and operation, please read all instructions carefully. Before reading the instructions, please be aware of the following items: This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of the user. This mark indicates procedures which, if improperly performed, might possibly result in personal harm to the user, or damage to property. NOTICE is used to address practices not related to personal injury. (1) Instructions for installation and use of this product are provided by the manufacturer. (2) Installation must be performed in accordance with the requirements of NEC and CEC by authorized personnel only. (3) For the safe operation of this unit, please read and follow the instructions carefully. (4) During operation, total capacity of indoor units should not exceed the total capacity of outdoor units. Otherwise, poor effect of cooling or heating may result. (5) Direct operators or maintainers should well keep this manual. (6) If this unit fails to operate normally, please contact our service center as soon as possible and provide the following information: 1) Content on the nameplate (model number, cooling capacity, production code, ex-factory date. 2) Malfunction details (before and after the malfunction occurs. (7) Each unit has been strictly tested and proved to be qualified before ex-factory. In order to prevent units from being damaged or operating normally because of improper disassembly, please do not disassemble the unit by yourself. If you need to disassemble and check units, please contact our service center. We will send specialists to guide the disassembly. (8) Installation must be performed in accordance with the requirements of NEC and CEC by authorized personnel only. User Notice ● This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.Children should be supervised to ensure that they do not play with the appliance. ● DISPOSAL: Do not dispose this product as unsorted municipal waste. Collection of such waste separately for special treatment is necessary.
Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons: (1) Damage the product due to improper use or misuse of the product; (2) Alter, change, maintain or use the product with other equipment without abiding by the instruction manual of manufacturer; (3) After verification, the defect of product is directly caused by corrosive gas; (4) After verification, defects are due to improper operation during transportation of product; (5) Operate, repair, maintain the unit without abiding by instruction manual or related regulations; (6) After verification, the problem or dispute is caused by the quality specification or performance of parts and components that produced by other manufacturers; (7) The damage is caused by natural calamities, bad using environment or force majeure. Exception Clauses
1 Safety Precautions ······································································· 1 2 Product Introduction ···································································· 2 2.1 Names of Key Components ························································· 2 2.2 Rated Working Condition ···························································· 2 3 Preparations for Installation ·························································· 2 3.1 Standard Fittings ······································································ 2 3.2 Location for Installation ······························································ 3 3.3 Requirements for Communication Line ·········································· 5 3.4 Wiring Requirements ································································· 6 4 Installation Instructions ································································ 7 4.1 Installation of Indoor Unit ··························································· 7 4.2 Refrigerant Pipe Connection ····················································· 10 4.3 Drainage Pipe Installation and Drainage System Testing ················· 11 4.4 Installation of Air Duct ····························································· 15 4.5 Installation of Wired Controller ·················································· 19 5 Wiring Work ·············································································· 19 5.1 Connection of Wire and Patch Board Terminal ······························· 19 5.2 Power Cord Connection ··························································· 20 5.3 Connection of Communication Wire between Indoor Unit and Outdoor Unit (or indoor unit) ······································································ 21 5.4 Connect Communication Wire of Wired Controller ·························· 21 5.5 Illuminate for Connection of Wired Controller and Indoor Units Network ······························································································· 22 6 Setting of External Static Pressure ··············································· 24 7 Routine Maintenance ·································································· 24 7.1 Cleaning of Filter ···································································· 24 7.2 Maintenance before the Seasonal Use ········································ 25 7.3 Maintenance after the Seasonal Use ··········································· 25 8 Table of Error Codes for Indoor Unit ············································· 25 9 Troubleshooting ········································································ 26 Contents
1 Safety Precautions (1) This product can’t be installed at corrosive, inflammable or explosive environment or the place with special requirements, such as kitchen. Otherwise, it will affect the normal operation or shorten the service life of the unit, or even cause fire hazard or serious injury. As for above special places, please adopt special air conditioner with anti-corrosive or anti-explosion function. (2) Follow this instruction to complete the installation work. Please carefully read this manual before unit startup and service. (3) Wire size of power cord should be large enough. The damaged power cord and connection wire should be replaced by exclusive cable. (4) After connecting the power cord, please fix the electric box cover properly in order to avoid accident. (5) Never fail to comply with the nitrigen charge requirements. Charge nitrogen when welding pipes. (6) Never short-circiut or cancel the pressure switch to prevent unit damage. (7) Please firstly connect the wired controller before energization, otherwise wired controller cannot be used. (8) Before using the unit, please check if the piping and wiring are correct to avoid water leakage, refrigerant leakage, electric shock, or fire etc.. (9) Do not insert fingers or objects into air outlet/inlet grille. (10) Open the door and window and keep good ventilation in the room to avoid oxygen deficit when the gas/oil supplied heating equipment is used. (11) Never start up or shut off the air conditioner by means of directly plug or unplug the power cord. (12) Turn off the unit after it runs at least five minutes; otherwise it will influence oil return of the compressor. (13) Do not allow children operate this unit. (14) Do not operate this unit with wet hands. (15) Turn off the unit or cut off the power supply before cleaning the unit, otherwise electric shock or injury may happen. (16) Never spray or flush water towards unit, otherwise malfunction or electric shock may happen. (17) Do not expose the unit to the moist or corrosive circumstances. (18) Under cooling mode, please don't set the room temperature too low and keep the temperature difference between indoor and outdoor unit within 5ºC (41ºF). (19) User is not allowed to repair the unit. Fault service may cause electric shock or fire accidents. Please contact Gree appointed service center for help. (20) Before installation, please check if the power supply is in accordance with the requirements specified on the nameplate. And also take care of the power safety. (21) Installation should be conducted by dealer or qualified personnel. Please do not attempt to install the unit by yourself. Improper handling may result in water leakage, electric shock or fire disaster etc.. (22) Be sure to use the exclusive accessory and part to prevent the water leakage, electric shock and fire accidents. (23) Make sure the unit can be earthed properly and soundly after plugging into the socket so as to avoid electric shock. Please do not connect the ground wire to gas pipe, water pipe, lightning rod or telephone line. (24) Electrify the unit 8 hours before operation. Please switch on for 8 hours before operation. Do not cut off the power when 24 hours short-time halting (to protect the compressor). (25) If refrigerant leakage happens during installation, please ventilate immediately. Poisonous gas will emerge if the refrigerant gas meets fire. (26) Volatile liquid, such as diluent or gas will damage the unit appearance. Only use soft cloth with a little neutral detergent to clean the outer casing of unit. (27) If anything abnormal happens (such as burning smell), please power off the unit and cut off the main power supply, and then immediately contact Gree appointed service center. If abnormality keeps going, the unit might be damaged and lead to electric shock or fire. Any personal injury or property loss caused by improper installation, improper debug, unnecessary repair or not following the instructions of this manual should not be the responsibility of Gree Electric Appliances, Inc. of Zhuhai. Multi Variable Air Conditioners Ducted Type Indoor Unit 1
Multi Variable Air Conditioners Ducted Type Indoor Unit 2 Product Introduction 2.1 Names of Key Components Fig 2.1.1 NO. 1 2 3 4 5 6 7 8 Control Gas Air-return Air Name Drain Pipe box Pothook pipe Liquid pipe Outlet Filter pening 2.2 Rated Working Condition Indoor Side Condition Outdoor Side Condition Dry Bulb Temp ºC (ºF) Wet Bulb Temp ºC (ºF) Dry Bulb Temp ºC (ºF) Wet Bulb Temp ºC (ºF) Rated Cooling 26.7(80.0) 19.4(67.0) 35(95.0) 23.9(75.0) Rated Heating 21.1(70.0) 15.6(60.0) 8.3(47.0) 6.1(43.0) 3 Preparations for Installation NOTICE! Product graphics are only for reference. Please refer to actual products. Unspecified measure unit is mm (in.). 3.1 Standard Fittings Please use the supplied standard fittings listed below as instructed. No. Name Appearance Q'ty Usage 1 Wired Controller 1 To control the indoor unit 2 Drain Hose Assembly 1 To connect with the hard PVC drain pipe 2 GMV-ND07~15PHS/B-T(U) 3 Special Nut 1 GMV-ND18~54PHS/B-T(U) GMV-ND72~96PH/B-T(U) 2
No. Name Appearance Q'ty Usage 4 Corrugated pipe 1 GMV-ND18~54PHS/B-T(U) 5 M10X8 Nut with Washer 4 To be used together with the hanger bolt for 6 M10 Nut (M10X8.4 Nut) 4 To be used together with the hanger bolt for 7 M10 Washer (Spring Washer M10X2.6) 8 Insulation 1 To insulate the gas pipe 9 Insulation 1 To insulate the liquid pipe 10 Sponge 2 To insulate the drain pipe 11 Fastener 8 To fasten the sponge 3.2 Location for Installation (1) The appliance shall not be installed in the laundry. (2) The top holder must be strong enough to support unit’s weight. (3) Drain pipe can drain water out easily. (4) There is no obstacle at inlet or outlet. Please ensure good air circulation. (5) In order to make sure the space for maintenance, please install the indoor unit according to the dimension described below. (6) Keep the unit away from heating source, inflammable gas or smoke. (7) This is a concealed ceiling type unit. (8) Indoor unit, outdoor unit, power cord and electric wire should stay at least 1m (39-3/8 in.) from the TV set and radio. Otherwise, these electrical appliances may have image interference and noise (Even if the distance is 1m (39-3/8 in.), when there is strong electric wave, noise may still occur.) Multi Variable Air Conditioners Ducted Type Indoor Unit installing the unit installing the unit 4 To be used together with the hanger bolt for installing the unit 3
Multi Variable Air Conditioners Ducted Type Indoor Unit GMV-ND07~54PHS/B-T (U) GMV-ND72PH/B-T(U)、GMV-ND96PH/B-T(U) Unit: mm (in.) Fig 3.2.1 Fig 3.2.2 4
Multi Variable Air Conditioners Ducted Type Indoor Unit (1) Installation of the unit must be in accordance with National Electric Codes and local regulations. (2) Improper installation will affect unit’s performance, so do not install the unit by yourself. Please contact local dealer to arrange professional technicians for the installation. (3) Do not connect power until all installation work is finished. 3.3 Requirements for Communication Line NOTICE! If the unit is installed in the place with strong electromagnetic interference, shielded wire must be applied on the communication wire between indoor unit and wired controller. Twisted pair line with shielding function must be applied on the communication wire between indoor unit and indoor unit (outdoor unit). 3.3.1 Select communication line for indoor unit and wired controller Fig 3.3.1 Total length of communication Wire diameter Wire type wire between indoor unit and Remark (AWG) wired controller (m/ft.) 1. Total length of communication cable can't exceed 250m (850ft.). Light/Ordinary 2. The cord shall be Circular cord (the polyvinyl chloride cores shall be twisted together). sheathed cord. L≤250(850) 2×18～2×16 3. If unit is installed in places with (60227 IEC intense magnetic field or strong 52/60227 IEC 53) interference, it is necessary to use shielded wire. 3.3.2 Select communication line for indoor unit and outdoor unit Fig 3.3.2 5
Multi Variable Air Conditioners Ducted Type Indoor Unit Total length of communication Wire diameter Wire type wire between indoor unit and Remark (AWG) indoor unit (outdoor unit) (m/ft.) 1. If the wire diameter is enlarged to 18AWG, the total communication cable Light/Ordinary length can reach 1500m (4920 ft.). polyvinyl chloride 2. The cord shall be Circular cord (the sheathed cord. L≤1000(3280) ≥2×18 cores shall be twisted together). (60227 IEC 52 3. If unit is installed in places with intense /60227 IEC 53) magnetic field or strong interference, it is necessary to use shielded wire. 3.4 Wiring Requirements (1) Power Cord Size and Air Switch Capacity Maximum Fuse Minimum Circuit Model Power Supply Overcurrent Capacity(A) Ampacity(A) Protection(A) GMV-ND07PHS/B-T(U) 15 1 15 GMV-ND09PHS/B-T(U) 15 1 15 GMV-ND12PHS/B-T(U) 15 1 15 GMV-ND15PHS/B-T(U) 15 1 15 GMV-ND18PHS/B-T(U) 15 1.3 15 GMV-ND22PHS/B-T(U) 15 1.3 15 GMV-ND24PHS/B-T(U) 15 1.4 15 208/230V-1ph-60Hz GMV-ND30PHS/B-T(U) 15 1.7 15 GMV-ND36PHS/B-T(U) 15 1.7 15 GMV-ND42PHS/B-T(U) 15 2 15 GMV-ND48PHS/B-T(U) 15 2.4 15 GMV-ND54PHS/B-T(U) 15 2.7 15 GMV-ND72PH/B-T(U) 15 5.7 15 GMV-ND96PH/B-T(U) 15 6.8 15 (1) Use copper wire only as unit’s power cord. Operating temperature should be within its rated value. (2) If the power cord is more than 15m (49-1/4 ft.) long, please increase properly the sectional area of power cord to avoid overload, which may cause accident. (3) Above selection requirements: Power cord size is based on BV single-core wire (2~4pc) at 40 ºC (104 ºF) Cambient temperature when laying across plastic pipe. Air switch is D type and used at 40 ºC (104 ºF). If actual installation condition varies, please lower the capacity appropriately according to the specifications of power cord and air switch provided by manufacturer. (4) Install cut-off device near the unit. The minimum distance between each stage of cut-off device should be 3mm(1/8 in.) (The same for both indoor unit and outdoor unit). 6
Multi Variable Air Conditioners Ducted Type Indoor Unit
4 Installation Instructions
NOTICE!
These duct type indoor units are limited to be installed for one room.
4.1 Installation of Indoor Unit
4.1.1 Outline Dimension and Installation Spots
Equip with a inspection hatch after lifting the unit. For the convenience of maintenance, the
service port should be on one side of the electric box and below unit’s lower level.
Fig 4.1.1
Below are dimensions of A, B, C, etc. for different models:
Unit: mm (in.)
Model
A
B
C
D
E
F
G
GMV-ND07PHS/B-T(U)
740
500
830
300
754
700
700
GMV-ND09PHS/B-T(U)
(29-1/8)
(19-11/16)
(32-11/16)
(11-13/16)
(29-11/16)
(27-9/16)
(27-9/16)
GMV-ND12PHS/B-T(U)
GMV-ND15PHS/B-T(U)
1040
500
1130
300
754
1000
700
GMV-ND18PHS/B-T(U)
(40-15/16)
(19-11/16)
(44-1/2)
(11-13/16)
(29-11/16)
(39-3/8)
(27-9/16)
GMV-ND22PHS/B-T(U)
GMV-ND24PHS/B-T(U)
GMV-ND30PHS/B-T(U)
1440
500
1530
300
754
1400
700
GMV-ND36PHS/B-T(U)
(56-11/16)
(19-11/16)
(60-1/4)
(11-13/16)
(29-11/16)
(55-1/8)
(27-9/16)
GMV-ND42PHS/B-T(U)
GMV-ND48PHS/B-T(U)
1440
500
1580
300
754
1400
700
GMV-ND54PHS/B-T(U)
(56-11/16)
(19-11/16)
(62-1/4)
(11-13/16)
(29-11/16)
(55-1/8)
(27-9/16)
7 Multi Variable Air Conditioners Ducted Type Indoor Unit Fig 4.1.2 Below are dimensions of A, B, C, etc. for different models: Unit: mm (in.) Model A B C D E F G GMV-ND72PH/B-T(U) 1240 1452 1280 940 1042 1071 470 GMV-ND96PH/B-T(U) (48-3/4) (57-1/8) (50-3/8) (38) (41) (42-1/8) (18-1/2) 4.1.2 Suspend the indoor unit (1) Drill bolt holes and install bolts. 1) Stick the reference cardboard on the installation position; drill 4 holes according to the hole site on the cardboard as shown in fig 4.1.3; diameter of drilling hole is according to the diameter of expansion bolt and the depth is 60-70mm(2-3/8~2-3/4 in.), as shown in fig 4.1.4. 8
Fig 4.1.3 Fig 4.1.4
2) Insert the M10 expansion bolt into the hole and then knock the nail into the bolt, as
shown in fig 4.1.5, and then remove the paper pattern.
NOTICE!
The length of bolt depends on the installation height of the unit, bolts are field supplied.
(2) Install the indoor unit temporarily.
Assemble suspension bolt on the expansion bolt, attach the hanger bracket to the suspension
bolt. Be sure to fix it securely by using a nut and washer from upper and lower sides of the hanger
bracket. The washer fixing plate will prevent the washer from falling.
NOTICE!
Before operation, please prepare all pipelines (connection pipe, drainage hose) and wires
(connection wire for wired controller, connection wire for indoor unit).
Multi Variable Air Conditioners Ducted Type Indoor Unit
Unit: mm (in.)
Fig 4.1.5
Fig 4.1.6
9 Multi Variable Air Conditioners Ducted Type Indoor Unit 1) When drilling holes on ceiling (air return outlet or air outlet), you can need to reinforce the ceiling to prevent vibration. For detailes, please consult user or builder. 2) If the strength of the ceiling is not good, please install a beam bracket, and then put the unit on the beam bracket. (3) Adjust the unit to the right position. (4) Check the level of the unit. After the indoor unit is installed, remember to check the horizontal status of the whole unit. It should be horizontal from front to back and slant 1% from left to right, following the drainage direction. (5) Remove the washer locating plate and then tighten the nut on it. 4.2 Refrigerant Pipe Connection (1) Aim the flaring port of copper pipe at the center of screwed joint and then tighten the flaring nut with hand as shown in fig 4.2.1. (2) Tighten the flaring nut with torque wrench. Fig 4.2.1 (3) Use pipe bend when bending the pipe and the bending angle should not be too small. (4) Wrap the connection pipe and joint with sponge and then tie them firmly with tape. Fig 4.1.7 Torque for tightening nut Pipe diameter mm(in.) Torque(N•m) Φ6.35(1/4) 15～30 Φ9.52(3/8) 35～40 Φ12.7(1/2) 45～50 Φ15.9(5/8) 60～65 Φ19.05(3/4) 70～75 10
4.3 Drainage Pipe Installation and Drainage System Testing 4.3.1 Notice for Installation of Drain Pipe (1) It is not allowed to connect the condensate drain pipe into waste pipe or other pipelines which are likely to produce corrosive or peculiar smell to prevent the smell from entering indoors or corrupt the unit. (2) It is not allowed to connect the condensate drain pipe into rain pipe to prevent rain water from pouring in and cause property loss or personal injury. (3) Condensate drain pipe should be connected into special drain system for air conditioner. (4) The drainage pipe should be short and the gradient downwards should be at least 1%～ 2% in order to drain condensation water smoothly. (5) The diameter of drainage hose should be bigger or equal to the diameter of drainage pipe joint. (6) Install drainage pipe according to the following fig and arrange insulation to the drainage pipe (Fig 4.3.1). Improper installation may lead to water leakage and damp the furniture and other things in the room. (7) You can buy normal hard PVC pipe used as the drainage pipe. During connection, insert the end of PVC pipe into the drainage hole and then tighten it with drainage hole and wire binder. Can’t connect the drainage hole and drainage hole with glue. (8) When the drainage pipelines are used for several units, the position of pipeline should be about 100mm (4in.) lower than the drainage port of each unit. In this case, thicker pipes should be applied. 4.3.2 Drainage pipe installation (1) Insert the drain hose into the drain hole and tighten it with tapes, as shown in Fig 4.3.2. (2) Tighten the pipe clamp, with the distance between screw nut and hose smaller than 4mm (1/8in.). ① metal clamp(accessory) ② drain hose(accessory) Multi Variable Air Conditioners Ducted Type Indoor Unit Fig 4.3.1 11
Multi Variable Air Conditioners Ducted Type Indoor Unit
(3) Use sealing plate to make the pipe clamp and hose insulated, as shown in Fig.4.3.3.
① metal clamp(accessory)
② thermal sponge(accessory)
Unit: mm (in.)
Fig 4.3.2 Fig 4.3.3
(4) When connecting several drain pipes, follow the instruction as indicated in Fig 4.3.4.
Choose the drain collecting pipe that matches with unit capacity.
Fig 4.3.4
(5) Install the trap as shown in following Fig 4.3.5.
(6) Install one trap for each unit.
(7) Convenience for cleaning trap in the future should be considered when installing it.
Fig 4.3.5
(8) The horizontal pipe can be connected to vertical pipe in the same level; please select the
connection way as shown in following fig.
NO.1: Connection of drainage pipe joints (Fig4.3.6).
NO.2: Connection of downspout elbow (Fig4.3.7).
NO.3: Inserting pipe connection (Fig4.3.8).
12
Unit: mm (in.) Multi Variable Air Conditioners Ducted Type Indoor Unit
Fig 4.3.6 Fig 4.3.7 Fig 4.3.8
(9) The installation height of raising pipe for drainage should be lower thanB. The gradient
from raising pipe towards drainage direction should be at least 1%～2%. If the raising pipe
is vertical with the unit, the raising height should be less than C.
Unit: mm (in.)
Fig 4.3.9
Model
A
B
C
GMV-ND07PHS/B-T(U)
GMV-ND09PHS/B-T(U)
GMV-ND12PHS/B-T(U)
GMV-ND15PHS/B-T(U)
GMV-ND18PHS/B-T(U)
GMV-ND22PHS/B-T(U)
150（5-7/8）
850（33-1/2）
800（31-1/2）
GMV-ND24PHS/B-T(U
GMV-ND30PHS/B-T(U)
GMV-ND36PHS/B-T(U)
GMV-ND42PHS/B-T(U)
GMV-ND48PHS/B-T(U)
GMV-ND54PHS/B-T(U)
GMV-ND72PH/B-T(U)
GMV-ND96PH/B-T(U)
/
/
/
(10) Drain pipes should have a downward slope of at least 1%～2%, in order to prevent pipes
from sagging, install hanger bracket at intervals of 1000～1500mm (39-3/8～59 in.).
13
Unit: mm (in.) Multi Variable Air Conditioners Ducted Type Indoor Unit 4.3.3 Test of Drainage System Models with water pump (1) Please test drainage system after electric work is finished. Inject approximately 1L purified water to drain pan from air vent, ensure that not to splash the water over the electrical components (e.g. water pump. etc.). 1) Spray 1L water on evaporator with sprayer. 2) In case of commissioning finished, please energize the IDUs and switch to cooling or dry mode, meanwhile, the water pump operates, you can check the draining through the transparent part of drain socket. 3) If communication wire is not connected, communication malfunction “C0” will occur after 60s of energizing. In this case, the water pump operates automatically. Check if the water pump drains normally drains normally through drainage port. The water pump will stop automatically after running for 10min. (2) During the test, please carefully check the drainage joint, make sure no any leakage occur. (3) It is strongly recommend to do the drain test before ceiling decoration. Models without water pump (1) Inject some water to the water tray of indoor unit as following: 1) Connect the drain hose to the other drain connection pipe of water tray and inject approximately 1L water. (Remove the drain hose after finishing testing and then put on the plug of water tray.) 2) Spray 1L water on evaporator with sprayer. Fig 4.3.10 Fig 4.3.11 14
Multi Variable Air Conditioners Ducted Type Indoor Unit (2) Check if the water drains smoothly from the drain pipe and check if there is water leakage on the connection pipe. (3) Arrange insulation of drain hose and pipe clamp after checking the drain system. 4.4 Installation of Air Duct NOTICE! ① There should be insulating layer on air-out duct, air-return duct and fresh air duct to avoid heat loss and moisture. Adhere a nail on the air duct and then add thermal sponge with a layer of tin. Fasten it with a nail cover and then seal the junction with tin tapes. You can also use other materials that have good insulation quality. ② Each air-out duct and air-return duct should be fixed on a pre-made board with iron frame. The junction of air duct should be well-sealed in order to prevent air leakage. ③ The design and construction of air duct should comply with national requirements. ④ The edge of air-return duct is suggested to be more than 150mm (5-7/8 in.) away from the wall. Add a filter to the air-return opening. ⑤ Please consider noise-damping and vibration damping for the design and construction of air duct. Besides, noise source must be away from people. For instance, do not have the air-return opening installed on top of the user (Offices, rest area, etc.). 4.4.1 Shape and Size of Air Outlet and Air-return Opening Fig 4.4.1 Air Outlet 15 Unit: mm (in.)
Multi Variable Air Conditioners Ducted Type Indoor Unit Fig 4.4.2 Air-return Opening Size of Air Outlet Size of Air-return Opening Model A B C D E F GMV-ND07PHS/B-T(U) 195 451 25 264 660 29 GMV-ND09PHS/B-T(U) (7-5/8) (17-3/4) (1) (10-3/8) (26) (1-1/8) GMV-ND12PHS/B-T(U) GMV-ND15PHS/B-T(U) 195 751 25 264 960 29 GMV-ND18PHS/B-T(U) (7-5/8) (29-9/16) (1) (10-3/8) (37-3/4) (1-1/8) GMV-ND22PHS/B-T(U) GMV-ND24PHS/B-T(U) GMV-ND30PHS/B-T(U) GMV-ND36PHS/B-T(U) 195 1151 25 264 1360 29 GMV-ND42PHS/B-T(U) (7-5/8) (45-5/16) (1) (10-3/8) (53-1/2) (1-1/8) GMV-ND48PHS/B-T(U) GMV-ND54PHS/B-T(U) Fig 4.4.3 Air Outlet 16
Multi Variable Air Conditioners Ducted Type Indoor Unit Fig 4.4.4 Air-return Opening Model A B C D GMV-ND72PH/B-T(U) 1023(40-1/4) 422(16-5/8) 872(34-3/8) 164 (6-1/2) GMV-ND96PH/B-T(U) 4.4.2 Installation of Air-out Duct Fig 4.4.5 No. Name No. Name 1 Hanger Rod 5 Static Pressure Box 2 Return Air Duct 6 Filter 3 Canvas Duct 7 Main Supply Air Duct 4 Return Air Inlet 8 Supply Air Outlet 4.4.3 Installation of the Return Air Duct (1) The default installation location of the rectangular flange is at the back and the return air cover plate is at the bottom, as shown in Fig 4.4.6. Fig 4.4.6 17
Multi Variable Air Conditioners Ducted Type Indoor Unit
(2) If the bottom return air is desired, just change the place of the rectangular flange and the
return air cover plate.
(3) Connect one end of the return air duct to the return air outlet of the unit by rivets and the
other to the return air louver. For the sake of the convenience to freely adjust the height, a
cutting of canvas duct will be helpful, which can be reinforced and folded by 8# iron wire.
(4) More noise is likely to be produced in the bottom return air mode than the rear return air
mode, so it is suggestive to install a silencer and a static pressure box to minimize the
noise.
(5) The installation method can be choosen with considering the conditions of the building
and maintenance etc., as shown in Fig 4.4.7.
No.
Name
No.
Name
1
Return Air Inlet (with filter)
4
Indoor unit
2
Canvas Duct
5
Supply Air Duct
3
Return Air Duct
6
Grille
4.4.4 Installation of the Fresh Air Pipe
(1) When the fresh air pipe is needed to be connected, cut the fresh air baffle as Fig 4.4.8.
Plug up the gap of the fresh air baffle by sponge if the fresh air duct is not be used.
(2) Install the round flange so that the fresh air duct can be connected as Fig 4.4.9.
(3) Sealing and heat preservation should be done for both the air pipe and round flange pipe.
(4) Fresh air should be treated via the air filter.
Fig 4.4.8 Fig 4.4.9
Fig 4.4.7
Table 5 Installation of the return air duct
18 4.5 Installation of Wired Controller Please refer to User Manual of Wired Controller for the installation details. NOTICE! When installation is finished, the unit must be tested and debugged before operation. Please refer to Instruction Manual of ODU for auto addressing and debugging details. 5 Wiring Work Before obtaining access to terminals, all supply circuits must be disconnected. (1) Units must be earthed securely, or it may cause electric shock. (2) Please carefully read the wiring diagram before carry out the wiring work, incorrect wiring could cause malfunction or even damage the unit. (3) The unit should be powered by independent circuit and specific socket. (4) The wiring should be in accordance with related regulations in order to ensure the units reliable running. (5) Install circuit breaker for branch circuit according to related regulations and electrical standards. (6) Keep cable away from refrigerant pipings, compressor and fan motor. (7) The communication wires should be separated from power cord and connection wire between indoor unit (8) Adjust the static pressure via wired controller according to site circumstance. 5.1 Connection of Wire and Patch Board Terminal (1) The connection of wire (as shown in fig 5.1.1) 1) Strip about 25mm (1 in.) insulation of the wire end by stripping and cutting tool. 2) Remove the wiring screws on the terminal board. 3) Shape the tail of wire into ring by needle nose plier, and keep the gauge of ring in accordance with screw. 4) Use the screwdriver for tightening the terminal. (2) The connection of stranded wire (as shown in fig 5.1.2) 1) Strip about 10mm (3/8 in.) insulation of the end of stranded wire by stripping and cutting tool. 2) Loosen the wiring screws on terminal board. 3) Insert the wire into the ring tongue terminal and tighten by crimping tool. 4) Use the screwdriver for tightening the terminal. Multi Variable Air Conditioners Ducted Type Indoor Unit 19
Multi Variable Air Conditioners Ducted Type Indoor Unit Fig 5.1.1 Fig 5.1.2 5.2 Power Cord Connection NOTICE! ① Every unit should be equipped with a circuit breaker for short-circuit and overload protection. ② During operation, all indoor units connected to the same outdoor unit system must be kept energized status. Otherwise, the unit can’t operate normally. Fig 5.2.1 NOTICE! Indoor unit quantity n is according to the outdoor unit capacity. For units with single-phase power supply. (1) Detach the electric box lid. (2) Let the power cord pass through the wiring through-holes. (3) Connect the power cord to terminal "L1, L2, " . (4) Fix the power card with wiring clamp. (5) The wire diameter of power cord can’t be less than 18AWG. 20 Unit: mm (in.)
5.3 Connection of Communication Wire between Indoor Unit and Outdoor
Unit (or indoor unit)
(1) Detach the electric box lid.
(2) Let the Communication cable pass through the wiring through-holes.
(3) Connect the communication wire to terminal D1 and D2 of indoor 4-bit wiring board, as
shown in fig5.3.1.
Fig 5.3.1 Fig 5.3.2
(4) Fix the communication cable with clamp of electric box.
(5) For more reliable communication, make sure connect the terminal resistor to the most
downstream IDU of the communication bus (terminal D1 and D2), as shown in fig 5.3.2,
terminal resistor is provided with each ODU.
5.4 Connect Communication Wire of Wired Controller
(1) Open electric box cover of indoor unit.
(2) Let the communication wire go through the rubber ring.
(3) Connect the communication wire to terminal H1 and H2 of indoor 4-bit wiring board.
(4) Fix the communication wire with wire clip on the electric box.
(5) Wiring instructions of remote receiving light board and wired controller:
1) Fig 5.4.1 shows the installation of wired controller.
Fig 5.4.1 Fig 5.4.2
2) Fig 5.4.2 shows the installation of remote controller.
Multi Variable Air Conditioners Ducted Type Indoor Unit
21 Multi Variable Air Conditioners Ducted Type Indoor Unit 3) Wired controller and receiving light board can be installed at the same time. When operating through a remote controller, both wired controller and the receiving light board can receive the signals, as shown in Fig 5.4.3. 5.5 Illuminate for Connection of Wired Controller and Indoor Units Network (1) Communication wire of indoor unit and outdoor unit (or indoor unit) is connected to D1, D2. (2) Wired controller is connected to H1, H2. (3) One indoor unit can connect two wired controllers that must be set as master one and slave one. (4) One wired controller can control 16 indoor unitS in maximum at the same time. (as shown in fig5.5.1) (1) The type of indoor units must be the same if they are controlled by the same wired controller. (2) When the indoor unit is controlled by two wired controllers, the addresses of the two wired controllers should be different through address setting. Address 1 is for main controller; Address 2 is for slave controller. Detailed setting please refer to the instruction manual of wired controller. Fig 5.4.3 22
Multi Variable Air Conditioners Ducted Type Indoor Unit Fig 5.5.1 23
Multi Variable Air Conditioners Ducted Type Indoor Unit 6 Setting of External Static Pressure Working range for external static pressure of this series of duct type unit is 0 Pa~275 Pa. For corresponding external static pressure to the respective static pressure notch please see as below. The setting of static pressure for indoor fan can be done via wired controller and Gree debugging software. For specific setting method please see the Wired Controller Instruction Manual or Gree Debugging Software Instruction Manual. Static pressure notch for indoor fan 2 3 4 5 6 7 8 9 External static pressure (Pa) 0 20 40 60 80 100 120 150 Static pressure notch for indoor fan 2 3 4 5 6 7 8 9 External static pressure (Pa) 0 30 60 90 120 150 180 200 Static pressure notch for indoor fan 1 2 3 4 5 6 7 8 9 External static pressure (Pa) 50 70 90 110 130 150 180 215 245 Static pressure notch for indoor fan 1 2 3 4 5 6 7 8 9 External static pressure (Pa) 50 75 100 125 150 180 210 245 275 7 Routine Maintenance (1) Do turn off the unit and cut off the main power supply when cleaning the air conditioner to avoid electric shock or injury. (2) Stand at solid table when cleaning the unit. (3) Do not clean the unit with hot water whose temperature is higher than 45°C to prevent fade or deformation. (4) Do not dry the filters by fire, or it may catch fire or become deformed. (5) Clean the filter with a wet cloth dipped in neutral detergent. (6) Please contact after-sales service staff if there is abnormal situation. 7.1 Cleaning of Filter (1) Remove the filters from inlet of IDU. Use a vacuum cleaner to remove dust. If the filters are dirty, wash them with warm water and mild detergent, and dry the filters in the shade. (2) If the unit used in the environment with much dust, please clean it regularly. (Usually once every two weeks). Applicable to: GMV-ND07～18PHS/B-T(U) Applicable to: GMV-ND22～54PHS/B-T(U) Applicable to: GMV-ND72PH/B-T(U) Applicable to: GMV-ND96PH/B-T(U) 24
7.2 Maintenance before the Seasonal Use (1) Check if the air inlet and air outlet of indoor and outdoor unit are blocked. (2) Check if securely grounded. (3) Check if all the power cord and communication cable are securely connected. (4) Check if any error code displayed after energized. 7.3 Maintenance after the Seasonal Use (1) Set the unit in fan mode for half a day in a sunny day to dry the inner part of unit. (2) When the unit won’t be used for a long time, please cut off power supply for energy saving; the characters on the wired controller screen will disappear after cutting off the power supply. 8 Table of Error Codes for Indoor Unit Code Content Error Error L0 Indoor Unit Error LA Indoor Units L1 Indoor Fan Protection LH Low Air Quality Warning dA L2 E-heater Protection LC ODU-IDU Incompatibility L3 Water Full Protection d1 Indoor Unit PCB Error dC Capacity DIP Switch Wired Controller Power L4 Supply Error d3 L5 Freeze protection d4 Inlet Pipe Temperature L7 No Master Indoor Unit Error Power Insufficiency L8 Protection d7 Humidity Sensor Error C0 Communication Error Quantity Of Group L9 Control Indoor Units Setting Error db Special Code: Field Debugging Code Multi Variable Air Conditioners Ducted Type Indoor Unit Code Content Error Code Content d9 Jumper Cap Error Incompatibility Error Indoor Unit Network Address Error dH Wired Controller PCB Error Error Setting Error. Ambient Temperature Outlet Air Temperature Sensor Error dL Sensor Error dE Indoor Unit CO2 Sensor Sensor Error Error d6 Outlet Pipe Temperature dy Water Temperature Sensor Error Sensor Error d8 Water Temperature Error AJ Filter Cleaning Reminder 25
Multi Variable Air Conditioners Ducted Type Indoor Unit 9 Troubleshooting The air conditioner is not expected to be serviced by users. Incorrect repair may cause electric shock or fire, so please contact an authorized service center for professional service. The following checks prior to contact may save your time and money. Phenomenon Troubleshooting The unit can’t start The unit stops after running for a while. ① The inlet or outlet of ODU or IDU are blocked by obstacle. Poor cooling effect Poor heating effect Indoor fan doesn’t start up during heating NOTICE! If air conditioner still fails to work normally after checking and handling as described above, please stop using it immediately and contact local service center for assistance. ① Power supply is not connected. ② Circuit breaker tripping caused by leakage of electricity. ③ Input voltage is too low. ④ Defect of main PC-board. ① The filter is dirty. ② Too heavy heat load of room (e.g. too many people). ③ Door or windows is open. ④ Inlet and outlet of IDU are blocked. ⑤ Setting temperature is too high. ⑥ Refrigerant is insufficient (e.g. refrigerant leakage). ① The filter is dirty. ② Door or window is open. ③ Setting temperature is too low. ④ Refrigerant is insufficient (e.g. refrigerant leakage). ① At starting, the IDU fan could not operate till the heat exchange become hot, for preventing delivering the cool air. ② At defrosting, the IDU fan stopped due to system switch to cooling mode. for preventing delivering the cool air, and resume operating after defrosting. 26
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 600005000172