GREE NCHS8B Owner's manual

Category
Split-system air conditioners
Type
Owner's manual

This manual is also suitable for

Owner's Manual
Air Conditioners
Models:
NCHS1B
NCHS4B
NCHS8B
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 globa[email protected]m.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
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.
(3) The total capacity of running indoor units must not exceed that of the outdoor units.
Otherwise, the cooling (heating) effect of each IDU would be poor.
(4) Make sure that this manual is kept by direct operators and maintainers.
(5) In case of malfunction, please examine the following items and contact our authorized
service centers as soon as possible.
1) Air conditioner’s nameplate (model, cooling capacity, product code, ex-factory date);
2) Malfunction status (detail description of conditions before and after malfunction occurs)
(6) All units have been strictly tested and proved to be qualified before ex-factory. To avoid
damage or operation failure which may be caused by improper disassembly, please do not
disassemble units by yourself. If disassembly is needed, please contact our authorized service
centers.
(7) All graphics and information in this manual are only for reference. Manufacturer reserves
the right for changes in terms of sales or production at any time and without prior notice.
(8) Under the standby status, the unit will consume a little power for ensuring reliability of the
complete unit, maintaining normal communication and preheating refrigerant. When the unit won’t
be used for a long time, please cut off the power of the complete unit. However, please preheat it
when operating the unit next time.
This appliance can be used by children aged from 8 years and above and persons with
reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have
been given supervision or instruction concerning use of the appliance in a safe way and understand
the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance
shall not be made by children without supervision.
Correct Disposal of this product: This marking indicates that this product should not be
disposed with other household wastes throughout the EU. To prevent possible harm to the
environment or human health from uncontrolled waste disposal, recycle it responsibly to promote
the sustainable reuse of material resources. To return your used device, please use the return and
collection systems or contact the retailer where the product was purchased. They can take this
product for environmental safe recycling.
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.......................................................................................................................... 8
4 Installation Instruction ......................................................................................................................... 9
4.1 Installation of Cooling and Heating Mode Exchanger ............................................................... 9
4.1.1 Dimension of Outdoor Unit and Mounting Hole Position ............................................... 9
4.1.2 Hole-drilling for Bolt and Bolt Instalaltion .......................................................................12
4.1.3 Hang unit ............................................................................................................................13
4.1.4 Horizontal alignment .........................................................................................................13
4.2 Pipe Connection ...........................................................................................................................14
4.2.1 Precautions for the Installation of Connection Pipe .....................................................14
4.2.2 Selection of Y-type branch ...............................................................................................15
4.2.3 Thermal insulation for pipeline ........................................................................................16
4.2.4 Support and protection of pipeline ..................................................................................16
4.3 Installation and Test for Drainage Hose ....................................................................................19
4.3.1 Precaustions for the Installation of Drainage Hose ......................................................19
4.3.2 Installation of Drainage Hose ..........................................................................................19
4.3.3 Drainage System Test ......................................................................................................21
5 Cable Connection ................................................................................................................................ 22
5.1 Connection of Cable and Terminal of Wiring Board ................................................................23
5.2 Connect Power Cord ....................................................................................................................24
5.3 Conenct Communication Wire of Indoor Unit and Outdoor Unit ........................................... 25
6 Routine Maintenance ......................................................................................................................... 26
6.1 Notice before Seasonal Use ....................................................................................................... 26
6.2 Maintenance after Seasonal Use ............................................................................................... 27
7 Troubleshooting ................................................................................................................................. 27
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
1
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.
Please install the unit
according to instructions in
this manual. Read this
manual carefully before
starting up or checking the
machine.
Installation should be
performed by distributor or
qualified personnel. Do not
install the product by
yourself. Improper
installation will result in
water leakage, electric
shock or fire hazard.
Before installation, please
check the power cord if it
complies with the power
supply requirement on the
nameplate. Make sure the
power supply is safe.
This air conditioner must be
properly grounded through
the receptacle to avoid
electric shock. The ground
wire shouldn’t be connected
with gas pipe, water pipe,
lightning arrester or
telephone line.
When installing, specialized
parts and accessories must
be used. Otherwise, it may
result in water leakage,
electric shock or fire hazard.
R410A refrigerant can
produce poisonous gas
once it meets fire, so please
ventilate the room
immediately if refrigerant
leaks out during installation.
Diameter of power cord
must be large enough.
Damaged power cord or
connecting wire must be
replaced by specialized
electric cable.
After the power cord is
connected, please install
the cover of electric box to
avoid danger.
Nitrogen must be charged
according to technical
requirements.
Short circuit is forbidden. Do
not cancel the pressure
switch, otherwise unit may
be damaged.
For units with wired
controllers, do not connect
power supply until the wired
controller is well installed.
Otherwise, the wired
controller cannot be used.
When installation is
finished, please check and
make sure the drain pipe,
pipeline and electric wire
are all well connected to
avoid water leakage,
refrigerant leakage, electric
shock and fire hazard.
Do not extend fingers or
objects into air outlet or the
return air grille.
If gas heater or petroleum
heater is used in the same
room, please open the door
or window to maintain good
air circulation, otherwise an
oxygen shortage may occur,
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
2
Do not operate or stop the
unit by inserting or pulling
out the power plug.
Do not turn off the unit until
it runs for at least 5 minutes.
Otherwise, oil return of the
compressor will be affected.
Children are not allowed to
operate the air conditioner.
Do not operate the air
conditioner with wet hands.
Please turn off and unplug
your air conditioner before
cleaning. Otherwise, electric
shock or personal injury
may occur.
Do not spray water on the
air conditioner or clean it
with water, otherwise
malfunction or electric
shock may occur.
Do not expose the air
conditioner directly under
damp or corrosive
surroundings.
Connect power 8 hours
before operation. Do not
disconnect power when you
want to stop the unit in a
short period of time, e.g. in
one night. (This is for
protecting the compressor.)
Volatile liquid like thinner or
gasoline will damage the
appearance of air
conditioner. (Please use
soft dry cloth and wet cloth
with mild detergent to clean
unit’s outer case.)
Under cool mode, do not set
the indoor temperature too
low. Keep the difference
between indoor temp and
outdoor temp within 5.
If abnormal condition occurs
(e.g. unpleasant smell),
please turn off the unit at
once and disconnect power
supply. Then contact Gree
authorized service center. If
the air conditioner continues
to operate despite of
abnormal condition, it may
be damaged and cause
electric shock or fire
hazard.)
Do not repair the air
conditioner by yourself.
Improper repair will cause
electric shock or fire hazard.
Please contact Gree
authorized service center
and ask professional
personnel to repair it.
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.
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
3
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
No.
Name
Connection pipe of outdoor
unit
Drainage pipe
Connection pipe of indoor unit
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
4
2.2 Parameter table
Model
NCHS1B
NCHS4B
NCHS8B
Rated voltage
220V~240V
220V~240V
220V~240V
Max. quantity of connecting indoor unit
8
32
64
Max. branch quantity of connecting
indoor unit
1
4
8
Max. quantity of connecting indoor unit
for each branch
8
8
8
Max. total capacity of connecting
indoor unit for each branch
14
14
14
Total capacity of connecting indoor
unit for mode convertor
14
45
68
Size of high pressure gas pipe (mode
convertor connects outdoor unit)
16
22
22
Size of low pressure gas pipe (mode
convertor connects outdoor unit)
22
28
28
Size of liquid pipe (mode convertor
connects outdoor unit)
9.52
12
16
Size of liquid pipe (mode convertor
connects indoor unit)
16
16
16
Size of gas pipe (mode convertor
connects indoor unit)
9.52
9.52
9.52
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
5
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.
No.
Name
Photo
Qty
Purpose
1
M10X8
Nut with washer M10X8
4
Used for hanging indoor unit
2
Nut M10
(hesagon nut M10X8.4)
4
Used for hanging indoor unit
3
Washer 10
(spring washer M10X2.6)
4
Used for hanging indoor unit
4
High-tenperature tieline
8
Wrap sponges at the
connection position
5
Installation template
/
1
Use for drilling holes at the
ceiling
The packed attachments should be subject to actual objects. If there are any alterations, there will
be no further notice.
3.2 Installation Site
1Make sure the hanging parts can hold the weight of unit.
2Water can be drained out from the drainage hose conveniently.
3No obstacles at outlet and inlets. Keep the air ventilation in good condition.
4for indoor unit (as shown in below fig) and the space used for maintenance should be ensured.
5Please keep the unit away from those positions where theres thermal sournce, inflammable
gas and smog.
6The unit is the cassette type (concealed type).
7Indoor unit, outdoor unit, power cord and connection cord should be kept 1m above away from
TV and radio for preventing graphic interference and noise. Even the distance is 1m, if theres strong
electric wave, theres still noise.
Unitmm
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
6
Fig 3.1
Caution:
The installation of the unit must compyu with national and local safety regulations.
Users cant install the unit by theirselves, because the intallation quality will affect the
operation directionly. After purchasing the unit, please contact with dealer. The unit must be
installed and debugged by professional installer.
The unit can be put through power only after all installation work is finished.
3.3 Selection Requirement for Communication Wire
Caution:
If the unit is installed at the place where theres strong electromagnetic interference, the
communication wire between indoor unit and wired controller must adopt shield wire, and the
communication wire between indoor unit and indoor unit (outdoor unit) must adopt twisted wire with
shielding function.
Comunicaton Wire between mode exchanger and indoor unit, outdoor unit:
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
7
Figure 3.2
Type of wire
Total length of
communication wire
between indoor unit
and another
indoor/outdoor unit:
L(m)
Wire diameter
(mm2)
Material standard
Remarks
Light/Ordinary polyvinyl
chloride sheathed cord
(60227 IEC 52/60227 IEC
53)
L≤1000
≥2×0.75
IEC 60227-5:2007
1.if the wire diameter is enlarged
to 2×1mm2,the total
communication length can reach
1500m.
2.The cord shall be circular
cord(the cores shall be twisted
together).
Communication wire can be
longer if wire diameter is 2×1mm2.
But the total length cannot exceed
1500m.
3. If unit is installed in places with
intense magnetic field or strong
interference, it’s necessary to use
shielded wire.
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
8
3.4 Wiring Requirment
Power cord size and capacity of air switch
Model
Power
Capacity of
air switch
(A)
Min sectional
area for earthing
wire (mm2)
Min sectional
area for power
cord(mm2)
NCHS1B
220~ 240 V
50/60Hz
6
1.0
1.0
NCHS4B
220~ 240 V
50/60Hz
6
1.0
1.0
NCHS8B
220~ 240 V
50/60Hz
6
1.0
1.0
Caution:
Above circuit breaker and power cord specition are selected according to the max power
(max currrect).
Specification of power cord is based on the working condition where ambient temperature is
40 and multi-core copper cable (working temperature is 90, e.g. power cable with YJV
cross-linked copper, insulated PE and PVC sheath) is lying on the surface of slot. If working condition
changes, please adjust the specification according to national standard.
Specification of circuit breaker is based on the working condition where ambient temperature
of circuit breaker is 40. If working condition changes, please adjust the specification according to
national standard.
When installating the cut-off device next to the unit, the min space between every two levels
of cut-off device should be 3mm (for indoor unit and outdoor unit).
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
9
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. The position of maintenance port should be lower than the lower size of unit.
The mode exchanger shall be installed near the maintenance port or air return of indoor unit. (Note:
if it is installed near the air return, please make sure not to affect air return and maintenance).
The following pictures detailedly describe the installation of maintenance port and mode exchanger:
Fig 4.1.1
Fig 4.1.2
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
10
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
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
11
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
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
12
Fig 4.1.7
4.1.2 Hole-drilling for Bolt and Bolt Instalaltion
1Stick 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. As shown in fig 4.1.9.
Fig 4.1.8 Fig 4.1.9
(2) Insert M10 expansion bolt into hole, and then set the iron nail into bolt. As shown in fig 4.1.10.
Caution:
The length of bolt should be selection according to the height of room. Bolt should be purchased by
the user.
Fig 4.1.10
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
13
4.1.3 Hang unit
Hang the unit at the bolt on the ceiling of room. Please use special nut for securing the unit.
I
I
2:1
48
Fig 4.1.11
Caution:
Before operation, please prepare all pipelines (connection pipe, drainage hose) and wires
(connection wire for wired controller, connection wire for indoor unit).
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.
If the strength of the ceiling is not good, please install a beam bracket, and then put the unit on
the beam bracket.
4.1.4 Horizontal alignment
When indoor unit is intalled, please perform horizontal inspection for the complete unit. The front
side and back side of the unit must be places horozntally. The left side and right side of the unit
should along water drainage direction with 1% gradient. See fig 4.1.12.
Fig 4.1.12
Cautions for Installation
(1). The mode exchanger must be installed by using hanger rod. During installation, the components
must be kept vertically upright according to the indicated direction;
(2). During installation, enough space shall be considered for removal of the components. The pipe
shall not be jammed between the components.
(3). The distance of the component to the indoor unit along the pipe shall not be higher than
5000mm;
(4). The component shall be installed in a straight line to the inlet pipe and branch pipe (See
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
14
schematics below):
Branch pipe
Branch pipe
Branch pipe
Plan view
Plan view
Top view
Right connection
Wrong connection
ME UNIT
ME UNIT
ME UNIT
Fig 4.1.13
4.2 Pipe Connection
4.2.1 Precautions for the Installation of Connection Pipe
1Please 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. Keep the pipe
bends as less as possible and the bend radius as large as possible.
2Install the connection pipes by welding. Please strictly follow the requirements for welding
process. Rosin joints, weak joints or pin holes are not allowed.
3
When laying the pipe, be careful not to distort it. Radius of bending parts must be over 200mm.
Please do not bend or stretch the pipes frequently, otherwise the pipes will become hard. A
pipe shall not be bent or stretched for more than 3 times at the same position.
4Please use moment wrench to connection the union nut of indoor unit. See below fig.
Fig 4.2.1
1Aim the flared outlet of copper pipe at the center of screwed center, and then rotate the flared
nut with hand.
2Use moment wrench to rotate the flared nut until you has head a sound of “KATA”.
3Wrap the connection pipe (not insulated) and joint with sponge and then use plastic adhesive
tape to bundle it.
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
15
4Support the connection pipe with bracket.
5The 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.
6When connecting indoor unit and connection pipe, do not pull the big joint and small joint of
indoor unit forcibly. Otherwise, capillary or other pipes of indoor unit may be broken, which will
lead to leakage.
4.2.2 Selection of Y-type branch
If connect outdoor unit to multiple mode exchanger, the Y-type branch should be adopted.
1Y-type branch
Fig 4.2.2
2Y-type branch has several pipe sections with different size, which facilitates to match with
various copper pipes. Use pipe cutter to cut in the middle of the pipe section that is of proper
size and remove burrs as well. See the following figure.
3Y-type branch must be installed vertically or horizontally.
Fig 4.2.3
Y-type branch
Total capacity of downstream indoor
unit(s) (X)
Model
X200
FQ01A/A
200X300
FQ01B/A
300X700
FQ02/A
700X1350
FQ03/A
1350X
FQ04/A
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
16
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
1For multi VRF system, every copper pipe should be labeled so as to avoid misconnection.
2
At the branch inlet, leave at least 500mm straight pipe section. For FQ04 branch, leave at least
800mm straight pipe section.
3Thermal insulation for pipeline
1To avoid condensate or water leak on the connection pipe, the gas pipe and liquid pipe must
be wrapped with thermal insulating material and tied by adhesive tape.
2Thermal insulating material shall be able to bear the pipe temperature: For heat pump unit,
liquid pipe should bear 70 or above and gas pipe should bear 120 or above. For cooling
only unit, both liquid pipe and gas pipe should bear 70 or above. Example: Polyethylene
foam (bear 120 or above); foaming polyethylene (bear 100 or above)
3Joints of indoor and outdoor unit should be wrapped with insulating material and leave no gap
to surfaces of indoor unit and outdoor unit. See Fig.4.2.4.
Fig 4.2.4
4Thermal insulating material of branches should be the same as that of the pipeline. The
attached foam of branches cannot be taken as insulating material.
5When wrapping the tape, the later circle should cover half of the former one. Don’t wrap the
tape too tight, otherwise the insulation effect will be weakened.
6After wrapping the pipe, apply sealing material to completely seal the hole on the wall.
4.2.4 Support and protection of pipeline
1Support should be made for hanging connection pipe. Distance between each support cannot
be over 1m.
2
Protection against accidental damage should be made for outdoor pipeline. If pipeline exceeds
1m, a pinch plate should be added for protection.
GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
17
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.
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GREE NCHS8B Owner's manual

Category
Split-system air conditioners
Type
Owner's manual
This manual is also suitable for

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