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

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

To Users
Thank you for selecting Gree’s product. Please read this instruction manual carefully before installing and using
the product, so as to master and correctly use the product. In order to guide you to correctly install and use our
product and achieve expected operating e󰀨ect, we hereby instruct as below:
(1) This equipment should be installed, operated or maintained by the qualified servicemen who have had
specic training. During operation, all safety issues covered in the labels, User’s Manual and other literature
should be followed strictly. This equipment 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.
(2) This product has gone through strict inspection and operational test before leaving the factory. In order
to avoid damage due to improper disassembly and inspection, which may impact the normal operation of
unit, please do not disassemble the unit by yourself. You can contact our designated dealer or local service
center for professional support if necessary.
(3) When the product is faulted and cannot be operated, please contact our designated dealer or local service
center as soon as possible by providing the following information.
• Contents of nameplate of product (model, cooling/heating capacity, product No., ex-factory date).
• Malfunction status (specify the situations before and after the error occurs).
(4) All the illustrations and information in the instruction manual are only for reference. In order to make the
product better, we will continuously conduct improvement and innovation without further notice.

Contents
Safety Notices (Please be sure to abide ) ...................................................................1
1. Diagram of the Operating Principle .......................................................................10
2. Operating Principle of the Unit............................................................................... 11
3. Nomenclature...........................................................................................................12
4. Installation Example .............................................................................................14
5. Main Components ..................................................................................................16
6. Installation Guideline of Monobloc Unit................................................................16
6.1 Instruction to installation .................................................................................................16
6.2 Installation of monobloc unit ...........................................................................................17
7. Installation of Hydraulic Unit..................................................................................20
7.1 Available external static pressure of outlet......................................................................20
7.2 Ambient temperature and leaving water temperature upper limit ...................................21
7.3 Water volume and expansion vessel pressure ...............................................................22
7.4 The method of calculating the charging pressure of expansion vessel ..........................22
7.5 Selection of expansion vessel.........................................................................................23
8. Remote Air Temperature Sensor............................................................................ 24
9. Thermostat...............................................................................................................25
10. 2-Way Valve............................................................................................................26
11. 3-Way Valve ............................................................................................................26
12. Other Thermal ......................................................................................................27
13. Optional Electric Heater........................................................................................28
14. Gate-controller.......................................................................................................29
15. Charging and Discharging of Refrigerant...........................................................29
16. Installation of Insulated Water Tank ...................................................................31
16.1 Installation measure......................................................................................................31
16.2 Outline dimension and parameter of water tank ...........................................................32
16.3 Connection of waterway system ...................................................................................33
16.4 Requirements on water quality ....................................................................................35
16.5 Electric wiring work ......................................................................................................35
17. Wring Diagram.......................................................................................................37
17.1 Control board ................................................................................................................37
17.2 Electric wiring................................................................................................................43
18. Commissioning......................................................................................................48
18.1 Check before startup.....................................................................................................48

18.2 Test run .........................................................................................................................49
19. Daily Operation and Maintenance .......................................................................50
19.1 Recovery.......................................................................................................................51
19.2 Decommissioning..........................................................................................................51
19.3 Notice before seasonal use ..........................................................................................52
19.4 Safety considerations....................................................................................................52
19.5 Maintenance of the water tank......................................................................................53
19.6 Maintenance of the unit.................................................................................................54

Air-to-water Heat Pump
1
MONOBLOC
TYPE
Safety Notices (Please be sure to abide )
WARNING: If not abide strictly, it may cause severe damage to the unit or the
people.
NOTE: If not abide strictly, it may cause slight or medium damage to the unit or the
people.
This sign indicates that the operation must be prohibited. Improper operation may
cause severe damage or death to people
This sign indicates that the items must be observed. Improper operation may
cause damage to people or property.
NOTE
After receipt of the unit, check it for appearance, unit model compared with your desire
and attachments.
Design and installation work of the unit must be performed by authorized personnel
according to applicable laws and regulations and this Instruction.
After installation work, the unit cannot be energized unless there is not any problem in
check.
Ensure periodical clean and maintenance of the unit after normal operation of the unit
for longer life and reliable operation.
If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualied persons in order to avoid a hazard.
The appliance shall be installed in accordance with national wiring regulations.
This product is a kind of comfort air conditioning, and is not allowed to be installed
where there are corrosive, explosive and inammable substances or smog; otherwise
it would lead to operation failure, shortened service life, five hazard or even severe
injuries. Special air conditions are required for where mentioned above.
Correct Disposure
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 retuern 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.
R32:675

Air-to-water Heat Pump
2
MONOBLOC
TYPE
WARNING
Once abnormality
likeburning smell occurs,
please cut o󰀨 the power
supply immediately and
then contact with service
center.
If the abnormality still exists,
the unit may be damaged
and electric shock or re
may result.
Don't operate the unit with
wet hand.
Otherwise, it may cause
electric shock.
Before
installation,please see
if the voltage of local
place accords with
that on nameplate
of unit and capacity
of power supply,
power cord or socket
is suitable for input
power of this unit.
Special circuit must be
adopted for power supply
to prevent re.
Do not use octopus
multipurpose plug or mobile
terminal board for wire
connection.
Be sure to pull out the
power plug and drain the
indoor unit and water tank
when unit is not in use for a
long time.
Otherwise, the accumulated
dust may cause
overheating,re or freeze of
water tank or coaxial heater
exchanger in winter.
Never damage the
electric wire or use
the one which is not
specied.
Otherwise, it may
cause overheating or
re.

Air-to-water Heat Pump
3
MONOBLOC
TYPE
Before cleaning please cut
o󰀨 the power supply.
Otherwise, it may cause
electric shock or damage.
The power supply must
adopt special circuit with
leakage switch and enough
capacity.
User can not change
power cord socket
without prior consent.
Wiring working
must be done by
professionals. Ensure
good earthing and
don't change earthing
mode of unit.
Earthing: the unit must
be earthed reliably ! The
earthing wire should
connect with special device
of buildings.
If not, please ask the
qualied personnel to
install.
Furthermore, don't connect
earth wire to gas pipe,
water pipe, drainage pipe or
any other improper places
which professional does not
recognize.
Never insert any foreign
matter into outdoor unit to
avoid damage . And never
insert your hands into the
air outlet of outdoor unit.
Don't attempt to repair
the unit by yourself.
Improper repair may
cause electric shock
or re, so you should
contact the service
center to repair.

Air-to-water Heat Pump
4
MONOBLOC
TYPE
Don't step on the top of the
unit or place anything on it.
There is the danger of fall of
things or people.
Never block the air inlet and
outlet of unit.
It may reduce e󰀩ciency or
cause stop of the unit and
even re.
Keep pressurized
spray, gas holder and
so on away from the
unit above 1m .
It may cause re or
explosion.
Please note whether the
installation stand is rm
enough or not.
If damaged, it may cause
fall of the unit and injury of
people.
Unit should be installed
at the place with good
ventilation to save energy.
When there is not
water in water tank,
never power the unit
on to run.

Air-to-water Heat Pump
5
MONOBLOC
TYPE
WARNING
Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer. Should repair be necessary, contact your nearest
authorized service centre. Any repairs carried out by unqualified personnel may be
dangerous. The appliance shall be stored in a room without continuous operating ignition
sources. (for example: open ames, an operating gas appliance or an operating electric
heater.) Do not pierce or burn.
Appliance shall be installed, operated and stored in a room with a floor area larger
than Xm .(Please refer to table “a” in section of “Safety Operation of Inflammable
Refrigerant” for space X.)
Appliance filled with flammable gas R32. For repairs, strictly follow manufacturer’s
instructions only. Be aware that refrigrants not contain odour. Read specialist’s manual.
If a stationary appliance is not tted with a supply cord and a plug, or with other means
for disconnection from the supply mains having a contact separation in all poles that
provides full disconnection under overvoltage category III conditions, the instructions
shall state that means for disconnection must be incorporated in the fixed wiring in
accordance with the wiring rules.
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.
The appliance shall be stored in a well-ventilated area where the room size
corresponds to the room area as specied for operation.
The appliance shall be stored in a room without continuously operating open ames
(for example an operating gas appliance) and ignition sources (for example an operating
electric heater).
The appliance shall be stored so as to prevent mechanical damage from occurring.

Air-to-water Heat Pump
6
MONOBLOC
TYPE
NOTE
Appliance lled with ammable gas R32.
Before use the appliance, read the owner’s manual rst.
To realize the function of the air conditioner unit, a special refrigerant circulates in
the system. The used refrigerant is the fluoride R32, which is specially cleaned.The
refrigerant is flammable and inodorous. Furthermore, it can leads to explosion under
certain conditions. But the flammability of the refrigerant is very low. It can be ignited
only by re.
Compared to common refrigerants, R32 is a nonpolluting refrigerant with no harm to
the ozonosphere. The inuence upon the greenhouse e󰀨ect is also lower. R32 has got
very good thermodynamic features which lead to a really high energy efficiency. The
units therefore need a less lling.
Before installation, please check if the adopted power is accordance with that listed on
nameplate, and check the safety of power.
The unit shall contact with the supply mains by a full disconnection device under
overvoltage category Ⅲ.
Before using, please check and confirm if wires and water pipes are connected
correctly to avoid water leakage, electric shock or re etc.
Don’t operate the unit with wet hand, and don’t allow children to operate the unit.
The On/o󰀨 in the instruction is for the operation to on and o󰀨 button of PCB for users;
cut o󰀨 power means to stop supplying power to the unit.
Don’t directly expose the unit under the corrosive ambient with water or dampness.
Don’t operate the unit without water in water tank .The air outlet/inlet of unit cannot be
blocked by other objects.
The water in unit and pipeline should be discharged if the unit is not in use, to prevent
the water tank, pipe line and water pump from frost-cracking.
Never press the button with sharp objects to protect manual controller. Never use
other wires instead of special communication line of the unit to protect control elements.
Never clean the manual controller with benzene, thinner or chemical cloth to avoid
fading of surface and failure of elements. Clean the unit with the cloth soaked in neutral
eradicator. Slightly clean the display screen and connecting parts to avoid fading.
The power cord must be separated with the communication line.
Any person who is involved with working on or breaking into a refrigerant circuit should
hold a current valid certicate from an industry-accredited assessment authority, which
authorises their competence to handle refrigerants safely in accordance with an industry
recognised assessment specication.
Servicing shall only be performed as recommended by the equipment manufacturer.
Maintenance and repair requiring the assistance of other skilled personnel shall be
carried out under the supervision of the person competent in the use of flammable
refrigerants.

Air-to-water Heat Pump
7
MONOBLOC
TYPE
Maximum and minimum water operating temperatures
Item Minimum water operating
temperatures
Maximum
water operating
temperatures
Cooling 5°C 25°C
Heating 20°C 65°C
Water heating 40°C 80°C
Maximum and minimum water operating pressures
Item Minimum water operating
pressures
Maximum water
operating pressures
Cooling
0.05MPa 0.25MPaHeating
Water heating
maximum and minimum entering water pressures.
Item Minimum entering water
pressures
Maximum entering
water pressures
Cooling
0.05MPa 0.25MPaHeating
Water heating
The range of external static pressures at which the appliance was tested (add-on
heat pumps, and appliances with supplementary heaters, only); If the supply cord
is damaged, it must be replaced by the manufacturer, its service agent or similarly
qualied persons in order to avoid a hazard.
The appliance is intended to be permanently connected to the water mains and not
connected by a hose-set.
If there is any question, please contact with local dealer, authorized service center,
agencies or our company directly.

Air-to-water Heat Pump
8
MONOBLOC
TYPE
NOTEte
If any hot work is to be conducted on the refrigeration equipment or any associated
parts,appropriate re extinguishing equipment shall be available to hand. Have a dry
powder or CO2 re extinguisher adjacent to the charging area.
Where electrical components are being changed, they shall be t for the purpose
and to the correct specification. At all times the manufacturer’s maintenance and
service guidelines shall be followed. If in doubt consult the manufacturer’s technical
department for assistance.
The following checks shall be applied to installations using ammable refrigerants:
– the charge size is in accordance with the room size within which the refrigerant
containing parts are installed;
– the ventilation machinery and outlets are operating adequately and are not
obstructed;
– if an indirect refrigerating circuit is being used, the secondary circuit shall be
checked for the presence of refrigerant;
– marking to the equipment continues to be visible and legible. Markings and signs
that are illegible shall be corrected;
– refrigeration pipe or components are installed in a position where they are
unlikely to be exposed to any substance which may corrode refrigerant containing
components, unless the components are constructed of materials which are inherently
resistant to being corroded or are suitably protected against being so corroded.
Repair and maintenance to electrical components shall include initial safety checks
and component inspection procedures. If a fault exists that could compromise safety,
then no electrical supply shall be connected to the circuit until it is satisfactorily dealt
with. If the fault cannot be corrected immediately but it is necessary to continue
operation, an adequate temporary solution shall be used. This shall be reported to the
owner of the equipment so all parties are advised.
Initial safety checks shall include: that capacitors are discharged: this shall be done
in a safe manner to avoid possibility of sparking; that no live electrical components
and wiring are exposed whiule charging, recovering or purging the system; that there
is continuity of earth bonding.

Air-to-water Heat Pump
9
MONOBLOC
TYPE
During repairs to sealed components, all electrical supplies shall be disconnected
from the equipment being worked upon prior to any removal of sealed covers, etc. If
it is absolutely necessary to have an electrical supply to equipment during servicing,
then a permanently operating form of leak detection shall be located at the most
critical point to warn of a potentially hazardous situation.
Particular attention shall be paid to the following to ensure that by working on
electrical components, the casing is not altered in such a way that the level of
protection is affected. This shall include damage to cables, excessive number of
connections, terminals not made to original specication, damage to seals, incorrect
tting of glands, etc.
Ensure that apparatus is mounted securely.
Ensure that seals or sealing materials have not degraded such that they no longer
serve the purpose of preventing the ingress of ammable atmospheres. Replacement
parts shall be in accordance with the manufacturer’s specications.
NOTE The use of silicon sealant may inhibit the e󰀨ectiveness of some types of leak
detection equipment.
Intrinsically safe components do not have to be isolated prior to working on them.
Do not apply any permanent inductive or capacitance loads to the circuit without
ensuring that this will not exceed the permissible voltage and current permitted for the
equipment in use.
Intrinsically safe components are the only types that can be worked on while live in
the presence of a ammable atmosphere. The test apparatus shall be at the correct
rating.
Replace components only with parts specified by the manufacturer. Other parts
may result in the ignition of refrigerant in the atmosphere from a leak.
Check that cabling will not be subject to wear, corrosion, excessive pressure,
vibration, sharp edges or any other adverse environmental e󰀨ects. The check shall
also take into account the e󰀨ects of ageing or continual vibration from sources such
as compressors or fans.
Under no circumstances shall potential sources of ignition be used in the searching
for or detection of refrigerant leaks. A halide torch (or any other detector using a naked
ame) shall not be used.
Equipment shall be labelled stating that it has been de-commissioned and emptied
of refrigerant. The label shall be dated and signed. Ensure that there are labels on the
equipment stating the equipment contains ammable refrigerant

Air-to-water Heat Pump
10
MONOBLOC
TYPE
1. Diagram of the Operating Principle
Flow switch
Expansion Vessel Automatic
exhaust valve
Tank temp sensor
Water tank
Electric heater
Safety
Note: the swimming pool, solar kit and water mixing accessory are optional parts. When they are required,
please contact the manufacturer.

Air-to-water Heat Pump
11
MONOBLOC
TYPE
2. Operating Principle of the Unit
DC Inverter Air to Water Heat Pump is composed of outdoor unit, indoor unit and internal-fan coil water tank.
Operation functions:
(1) Cooling;
(2) Heating;
(3) Water heating;
(4) Cooling +water heating;
(5) Heating+ water heating;
(6) Emergency mode;
(7) Fast hot water;
(8) Holiday mode;
(9) Forced operation mode;
(10) Quiet mode;
(11) Disinfection mode;
(12) Weather-dependent operation;
(13) Floor debugging;
(14) Air removal of the water system;
(15) Other thermal
Cooling: in cooling mode, the refrigerant is condensed in the outdoor unit and evaporated in the indoor unit. Via
the heat exchange with water in the indoor unit, the temperature of water decreases and it releases heat while the
refrigerant absorbs heat and evaporates. With the help of wired controller, the outow temperature can meet the
user’s requirement. Through the control of valve, the low-temperature water in the system is connected with indoor
fan coil and underground pipe, and exchanges heat with the indoor air so that the indoor temperature decreases to
the required range.
Heating: in heating mode, the refrigerant evaporates in the outdoor unit and is condensed in the indoor unit. Via
the heat exchange with water in the indoor unit, the water absorbs heat and its temperature increases while the
refrigerant releases heat and is condensed. With the help of wired controller, the outow temperature can meet the
user’s requirement. Through the control of valve, the high-temperature water in the system is connected with indoor
fan coil and underground pipe, and exchanges heat with the indoor air so that the indoor temperature increases to
the required range.
Water heating: in water heating mode: the refrigerant evaporates in the outdoor unit and is condensed in
the indoor unit. Via the heat exchange with water in the indoor unit, the water absorbs heat and its temperature
increase while the refrigerant releases heat and is condensed. With the help of wired controller, the outflow
temperature can meet the user’s requirement. Through the control of valve, the high-temperature water in the
system is connected with the coil pipe of bearing water tank, and exchanges heat with the water in the water tank
so that the temperature of water tank increases to the required range.
Cooling + water heating: when cooling mode exists together with the water heating mode, the user can set the
priority of these two modes based on the needs. The default priority is heat pump. That is under the default setting,
if cooling mode exists together with the water heating mode, the heat pump gives priority to cooling. In that case,
water heating can only realized with e-heater of the water tank. Inversely, the heat pump gives priority to water
heating and switches to cooling after nishing water heating.
Heating+ water heating: when heating mode exists together with the water heating mode, the user can set the
priority of these two modes based on the needs. The default priority is heat pump. That is under the default setting,
if heating mode exists together with the water heating mode, the heat pump gives priority to heating. In that case,
water heating can only realized with e-heater of the water tank. Inversely, the heat pump gives priority to water
heating and switches to heating after nishing water heating.

Air-to-water Heat Pump
12
MONOBLOC
TYPE
Emergency mode: this mode is only available for heating and water heating. When the outdoor unit stops due
to malfunction, enter the corresponding emergency mode; as to heating mode, after entering the emergency mode,
heating can only be realized through e-heater of the indoor unit. When the setting outow temperature or indoor
temperature is reached, the e-heater of indoor unit will stop running; as to water heating mode, the e-heater of
indoor unit stops while the e-heater of water tank runs. When the setting temperature or water tank is reached, the
e-heater will stop running.
Fast hot water: at the fast hot water mode, the unit runs according to the water heating control of heat pump
and the e-heater of water tank runs at the same time.
Forced operation mode: this mode is only used for refrigerant recovery and debugging for the unit.
Holiday mode: this mode is only available for heating mode. This mode is set to keep indoor temperature or
leaving water temperature in a certain range, so as to prevent water system of the unit from freezing or protect
certain indoor articles from freezing damage. When the outdoor unit stops due to malfunction, the two e-heaters of
the unit will run.
Disinfection mode: in this mode, the water heating system can be disinfected. When starting up the disinfection
function and setting corresponding time to meet the requirement of disinfection mode, the function will start. After
the setting temperature is reached, this mode will terminate.
Weather-dependent operation: this mode is only available for space heating or space cooling. In Weather-
dependent mode, the setting value (remote room air temperature or leaving water temperature) is detected and
controlled automatically when the outdoor air temperature is changed.
Quiet mode: Quiet mode is available in cooling, heating and water heating mode. At the quiet mode, the
outdoor unit will reduce the running noise via automatic control.
Floor commissioning: this function is intended to preheat the oor periodically for the initial use.
Air removal of the water system: this function is intended to replenish water and remove air in the water
system to make the equipment run at the stabilized water pressure.
Solar water heater: when the condition for starting the solar water heater is satised, the solar heater will start
to heat the circulation water. Then the heated water will go to the water tank and exchange heat with water in it. At
any condition, the solar water heater will be given priority for startup so as for energy conservation.
Other thermal: when the outdoor temperature is lower than the set point for starting other thermal and the unit
is under the error condition and the compressor has stopped for three minutes, the other thermal will start to supply
heat or hot water to the room.
3. Nomenclature
G RS - C Q 16 Pd / Nh G - M
1 2 3 4 5 6 7 8 9
NO. Description Options
1 GREE G-GREE Air to water heat pump
2 Heat Pump Water Heater RS
3 Heating Mode S= Static; C=Circulating
4 Function Q=Multi-function; Omit=Single-function
5 Nominal Heating Capacity 4.0=4.0kW; 6.0=6.0kW; 8.0=8.0kW; 10=10kW; 12=12kW; 14=14kW; 16=16kW
6 Compressor Style Pd=DC Inverter; Omit=On/O󰀨
7 Refrigerant Na=R410A; Nh=R32
8Design Serial Number G3,G4, G4 series is the same with G3 series but without the electric heater.
9 Power Supply E=230V,~,50Hz;M=400V,3N~,50Hz

Air-to-water Heat Pump
13
MONOBLOC
TYPE
Model Line-Up
Model Heating1, kW Power Input, kW COP, W/W Power supply
GRS-CQ4.0Pd/NhG3-E 5.00 0.926 5.40
230VAC,1Ph,50Hz
GRS-CQ6.0Pd/NhG3-E 6.00 1.111 5.40
GRS-CQ8.0Pd/NhG3-E 8.20 1.54 5.32
GRS-CQ10Pd/NhG3-E 10.20 2.02 5.05
GRS-CQ12Pd/NhG3-E 12.0 2.43 4.93
GRS-CQ14Pd/NhG3-E 14.2 2.99 4.75
GRS-CQ16Pd/NhG3-E 15.7 3.45 4.55
GRS-CQ8.0Pd/NhG3-M 8.20 1.62 5.06
400VAC,3Ph,50Hz
GRS-CQ10Pd/NhG3-M 10.20 2.06 4.95
GRS-CQ12Pd/NhG3-M 12.0 2.49 4.81
GRS-CQ14Pd/NhG3-M 14.2 3.09 4.60
GRS-CQ16Pd/NhG3-M 15.7 3.57 4.40
GRS-CQ4.0Pd/NhG4-E 5.00 0.926 5.40
230VAC,1Ph,50Hz
GRS-CQ6.0Pd/NhG4-E 6.00 1.111 5.40
GRS-CQ8.0Pd/NhG4-E 8.20 1.54 5.32
GRS-CQ10Pd/NhG4-E 10.20 2.02 5.05
GRS-CQ12Pd/NhG4-E 12.0 2.43 4.93
GRS-CQ14Pd/NhG4-E 14.2 2.99 4.75
GRS-CQ16Pd/NhG4-E 15.7 3.45 4.55
GRS-CQ8.0Pd/NhG4-M 8.20 1.62 5.06
400VAC,3Ph,50Hz
GRS-CQ10Pd/NhG4-M 10.20 2.06 4.95
GRS-CQ12Pd/NhG4-M 12.0 2.49 4.81
GRS-CQ14Pd/NhG4-M 14.2 3.09 4.60
GRS-CQ16Pd/NhG4-M 15.7 3.57 4.40
Model Cooling1 ,kW Power Input, kW EER, W/W Power supply
GRS-CQ4.0Pd/NhG3-E 5.00 0.962 5.20
230VAC,1Ph,50Hz
GRS-CQ6.0Pd/NhG3-E 6.50 1.275 5.10
GRS-CQ8.0Pd/NhG3-E 8.30 1.56 5.32
GRS-CQ10Pd/NhG3-E 10.2 2.00 5.10
GRS-CQ12Pd/NhG3-E 12.0 2.45 4.90
GRS-CQ14Pd/NhG3-E 13.7 3.00 4.57
GRS-CQ16Pd/NhG3-E 15.5 3.60 4.30
GRS-CQ8.0Pd/NhG3-M 8.30 1.64 5.06
400VAC,3Ph,50Hz
GRS-CQ10Pd/NhG3-M 10.20 2.13 4.79
GRS-CQ12Pd/NhG3-M 12.0 2.61 4.60
GRS-CQ14Pd/NhG3-M 13.9 3.32 4.19
GRS-CQ16Pd/NhG3-M 15.4 4.05 3.80
GRS-CQ4.0Pd/NhG4-E 5.00 0.962 5.20
230VAC,1Ph,50Hz
GRS-CQ6.0Pd/NhG4-E 6.50 1.275 5.10
GRS-CQ8.0Pd/NhG4-E 8.30 1.56 5.32
GRS-CQ10Pd/NhG4-E 10.2 2.00 5.10
GRS-CQ12Pd/NhG4-E 12.0 2.45 4.90
GRS-CQ14Pd/NhG4-E 13.7 3.00 4.57
GRS-CQ16Pd/NhG4-E 15.5 3.60 4.30

Air-to-water Heat Pump
14
MONOBLOC
TYPE
Model Cooling1 ,kW Power Input, kW EER, W/W Power supply
GRS-CQ8.0Pd/NhG4-M 8.30 1.64 5.06
400VAC,3Ph,50Hz
GRS-CQ10Pd/NhG4-M 10.20 2.13 4.79
GRS-CQ12Pd/NhG4-M 12.0 2.61 4.60
GRS-CQ14Pd/NhG4-M 13.9 3.32 4.19
GRS-CQ16Pd/NhG4-M 15.4 4.05 3.80
Notes
(a) 1Capacities and power inputs are based on the following conditions:
Indoor Water Temperature 30°C/35°C, Outdoor Air Temperature 7°C DB/6°C WB;
(b) 2Capacities and power inputs are based on the following conditions:
Indoor Water Temperature 23°C/18°C, Outdoor Air Temperature 35°C DB/24°C WB.
Mode Heat Source Side Temperature (°C) User Side Temperature (°C)
Heating -25~35 20~65
Cooling -15~48 5~25
Water Heating -25~45 40~80
4. Installation Example
CASE 1: Connecting Under-oor Coil for Heating and Cooling
Notes
(a) Type of thermostat and specication should be complied with installation of this manual;
(b) By pass valve must be installed to secure enough water ow rate, and by pass valve should be installed at
the collector.

Air-to-water Heat Pump
15
MONOBLOC
TYPE
CASE 2: Connecting Sanitary Water Tank and Under-oor Coil
T
B
Under-floor coil
Sanitary water tank
Booster heater
Notes
(a) In this case, three-way valve should be installed and should be complied with installation of this manual;
(b) Sanitary should be equipped with internal electric heater to to secure enough heat energy in the very cold
days.
CASE 3 : Connecting Sanitary Water Tank, Under-oor Coil and FCU
Note
Two-way valve is very important to prevent dew condensation on the oor and Radiator while cooling mode.

Air-to-water Heat Pump
16
MONOBLOC
TYPE
5. Main Components
(1) For models below
GRS-CQ4.0Pd/NhG3-E GRS-CQ6.0Pd/NhG3-E GRS-CQ4.0Pd/NhG4-E GRS-CQ6.0Pd/NhG4-E
GRS-CQ8.0Pd/NhG3-E GRS-CQ10Pd/NhG3-E GRS-CQ12Pd/NhG3-E GRS-CQ14Pd/NhG3-E
GRS-CQ16Pd/NhG3-E, GRS-CQ8.0Pd/NhG3-M GRS-CQ10Pd/NhG3-M GRS-CQ12Pd/NhG3-M
GRS-CQ14Pd/NhG3-M GRS-CQ16Pd/NhG3-M GRS-CQ8.0Pd/NhG4-E GRS-CQ10Pd/NhG4-E
GRS-CQ12Pd/NhG4-E GRS-CQ14Pd/NhG4-E GRS-CQ16Pd/NhG4-E GRS-CQ8.0Pd/NhG4-M
GRS-CQ10Pd/NhG4-M GRS-CQ12Pd/NhG4-M GRS-CQ14Pd/NhG4-M GRS-CQ16Pd/NhG4-M
6. Installation Guideline of Monobloc Unit
6.1 Instruction to installation
(1) Installation of the unit must be in accordance with national and local safety codes.
(2) Installation quality will directly a󰀨ect the normal use of the air conditioner unit. The user is prohibited from
installation. Please contact your dealer after buying this machine. Professional installation workers will
provide installation and test services according to installation manual.
(3) Do not connect to power until all installation work is completed.