SPRSUN CGK025V3L-B User manual

DC INVERTER Heat Pump
Installation Manual
Air to Water Heat
Pump
Heating+Cooling+DHW
Thank you for choosing our product, we shall be more than glad to service you. For you to better operate this
product and to prevent accidents due to misoperation, please read carefully this user manual before carrying
out any installation or operation, also please pay special attention to the warning, prohibition and attention
instructions. We are continuously supplementing and upgrading this user manual to better service for you!
Attention

2
1. Attentions
Be sure to read this manual before use. The installation, dismantle
mentand maintenance of the unit must be performed by qualified
personnel. It is forbidden to do any changes to the structure of the
unit. Otherwise injury of personor unit damage might happen.
The power supply to the unit must be grounded.
Make sure the power supply to the heat pump unit is off
Before any operations are done on the unit.
When the power cord gets looser or is damaged, always get
a qualified person to fix it.
Keep the unit away from the combustible or corrosive
environment.
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 super vised
to ensure that they do not play with the appliance.
Be sure to read this manual before use.

3
Use a dedicated socket for this unit, otherwise malfunction may
occur.
Do not touch the air outlet grill when fan motor is running.
Water or any kind of liquid is strictly forbidden to be poured into
the product, or may case creepage or breakdown of the product.
When running the unit, never cover clothes, plastic cloth or any
other material that block ventilation on the product which will
lead to low efficiency or even non-operation of this unit.
When the power cord gets loose or is damaged, always get a
qualified person to fix it.
It is mandatory to use a suitable circuit breaker for the heat pump
and make sure the power supply to the heater corresponds to the
specifications. Otherwise the unit might be damaged.

Safety precaution
4
2. Installation instructions
1. Installation should comply with local regulations and requirements.
2. Choose a suitable space for use (please refer to indoor/outdoor unit location selection). The
cooling capacity/heating capacity of the heat pump should be compatible with the size, height,
and heat insulation effect of the room.
3. Before installation, be sure to confirm the neutral line, L, N, A phase, B phase, C phase,
ground line of the user power supply and the neutral line of the heat pump, L, N, A phase, B
phase, C phase, ground One correspondence.
4. This heat pump complies with the safety and operation standards issued by the country.
5. When the heat pump needs to be installed or moved. It must be operated by professional
refrigeration installation and maintenance personnel. Heat pumps installed by non-professionals
are prone to quality or safety problems.
6. The user should provide a power supply that satisfies the installation and use. The allowable
range of voltage that can be used by this product is ±10% of the rated value. If this range is
exceeded, it will affect the normal operation of the heat pump. If necessary, use a voltage
stabilizer to avoid property damage.
7. The heat pump must have an independent circuit. The independent circuit needs to install a
leakage protector and an automatic circuit breaker. Need to be purchased by the user.
8. The heat pump should be installed in accordance with the national wiring regulations.
9. The heat pump must be grounded correctly and reliably, otherwise it may cause electric
shock or fire
10. Please do not turn on the power of the heat pump until the piping and wires are connected
and carefully checked.

Safety precaution
5
3.R32 refrigerant introduction
The heat pump uses environmentally friendly R32 refrigerant. This is a slightly flammable
refrigerant. Although it can burn and explode under certain conditions, as long as it is installed in a
room of the correct area and used correctly, there will be no danger of combustion and explosion.
Compared with ordinary refrigerants, R32 is an environmentally friendly refrigerant that does not
destroy the ozone layer, and its greenhouse effect value is also very low.
R32 heat pump room area requirements
The area of the heat pump installation, operation and storage room should be larger than 4
square meters.
Warning
1. Please read this manual before installation, operate and maintenance.
2. Except as specifically recommended by the manufacturer, pls do not use any method to speed
up the defrosting process or clean the frosted part.
3. Pls do not puncture or ignite the heat pump.
4. The heat pump should be stored in a room without a continuous fire source (such as gas
appliances ignited by an open flame, electric heaters, etc.).
5. When repairs are required, please contact the nearest after-sales service center. When
repairing, you must strictly abide by the operation manual provided by the manufacturer,
and it is forbidden to repair by non-professionals.
6. Pls comply with the relevant national gas laws and regulations.
7. The refrigerant in the system needs to be recovered and removed during maintenance or
disposal.

Safety precaution
6
Repair of sealing elements
1.When repairing closed components, disconnect the power supply to the equipment before
opening the sealed cover. If power supply is necessary during the maintenance process,
continuous leak detection should be performed on the most dangerous parts to prevent
potentially dangerous situations from happening.
2.In the following maintenance of electrical components, special care should be taken not to
affect the protection level of the enclosure. Improper maintenance methods may cause: damage
to cables, excessive connections, terminals not installed according to the original regulations,
damage to the seal, incorrect installation of the sealing cover and other dangers. Ensure that the
installation of the equipment is safe and reliable. Ensure that the sealing or sealing material will
not lose its function of preventing the entry of flammable gas due to aging. Replacement parts
should meet the manufacturer's specifications.
Note: The use of silicon-containing sealants may reduce the detection capabilities of leak
detection equipment. Intrinsically safe components do not need to be isolated before operation.
Maintenance of intrinsically safe components
If it is not possible to ensure that the heat pump does not exceed the allowable voltage and
current limits during use, do not use any permanent inductive or capacitive load in the circuit.
Intrinsically safe components are the only components that can continue to work in flammable
gases. The test instrument should be set in the correct gear.
The replacement components can be only used the parts specified by the manufacturer, other
parts may cause the refrigerant leaking in the air to catch fire.
Cable
Check whether the cable will be affected by wear, corrosion, overpressure, vibration, sharp
edges or other adverse environments. The inspection should also consider the influence of aging
or continuous vibration of the compressor and fan on the cable.
Leak inspection of R32 refrigerant
Check for refrigerant leakage should be done in an environment where there is no potential
ignition source. Halogen probes (or any other detectors that use open flames) should not be
used for detection

Safety precaution
7
Leak detection method
For systems containing R32 refrigerant, an electronic leak detector can be used for testing. The
test should be calibrated in a refrigerant-free environment to ensure that the leak detector does
not become a potential source of ignition and is suitable for the refrigerant being tested. The leak
detector should be set to the lowest flammable concentration of the refrigerant (expressed as a
percentage), calibrated with the refrigerant used and adjusted to the appropriate gas
concentration test range (up to 25%).
The fluid used to detect leaks is suitable for most refrigerants, but do not use chlorine-containing
solvents to prevent chlorine and refrigerants from reacting and corroding copper pipes.
If a leak is suspected, all open flames should be removed from the scene or the fire should be
extinguished.
If welding is required at the location where the leakage occurs, all refrigerants should be
recovered, or all refrigerants should be isolated away from the leakage point (use shut-off valves).
Oxygen-free nitrogen (OFN) is used to purify the entire system before and during welding.
Remove and vacuum
Maintenance or other operations on the refrigeration circuit should be performed in accordance
with normal procedures. However, the safety should also be considered, and the following
procedures should be followed:
1. Remove refrigerant;
2. Purify the pipeline with inert gas;
3. Vacuum;
4. Purify the pipeline with inert gas again;
5. Cut the pipe or weld it.
The refrigerant should be recycled into a suitable storage tank. The system should be purged
with oxygen-free nitrogen . This process may need to be repeated several times. Do not use
compressed air or oxygen for this operation.
In the purging process, the system is filled with oxygen-free nitrogen to reach the working
pressure under the vacuum state of the system, and then the oxygen-free nitrogen is discharged
into the atmosphere, and finally the system is evacuated. Repeat this process until all refrigerant
in the system is removed. After filling the oxygen-free nitrogen for the last time, exhaust the gas
to atmospheric pressure, and then the system can be welded. The above operations are
necessary for pipeline welding operations.
Ensure that there is no ignition source near the outlet of the vacuum pump and good ventilation.

Safety precaution
8
Procedure of refrigerant filling
As a supplement for the conventional procedures, the following requirements have been added:
1. Ensure that when using equipment of refrigerant filling, there will not be the mutual
contamination between different refrigerants. The pipeline of refrigerant filling should be as
short as possible to reduce the residual amount of refrigerant;
2. When filling refrigerant, there should be without the fire source near the unit;
3. Make sure that the refrigerant system has taken grounding measures before charging the
refrigerant;
4. After filling refrigerant (or not finished), stick the label on the system;
5. Must be careful not excessive filling;
Perform a pressure test with oxygen-free nitrogen before refilling refrigerant into the system.
After filling, a leak test must be carried out before the trial operation. The leak test must be
carried out again when leaving the area.
Scrapping
Before proceeding with this procedure, the technician should be fully familiar with the
equipment and all of its characteristics. It is recommended to recover safe refrigerant. If it is
necessary to re-use the recovered refrigerant, samples of refrigerant and oil should be analyzed
before operation. Before testing, please ensure that you have got the required power source.
Being familiar with the equipment and its operation;
2. Disconnecting the power supply;
3. Before proceeding with this procedure making sure that:
If necessary, the equipment of mechanical operation should be convenient to operate the
refrigerant storage tank;
All personal protective equipment are effective and can be used correctly;
The entire recycling process should be carried out under the guidance of qualified persons;
Recycling equipment and refrigerant storage tanks should meet the corresponding standards.
Maintenance safety matters
Warning
1. For repairs or scrapping, please contact the nearest or authorized service center.
2. Repairs performed by unqualified personnel may be dangerous.
3. When charging the heat pump with R32 refrigerant and maintaining it, please strictly observe
the manufacturer's requirements. This chapter mainly focuses on the special maintenance
requirements of R32 refrigeration appliances. Please refer to the after-sales service manual for

Safety precaution
9
detailed maintenance operations.
Qualification requirements for maintenance personnel
1. All operating personnel or refrigeration circuit maintenance personnel should obtain a valid
certificate issued by an industry-recognized evaluation agency to determine that they have the
qualifications for safe handling of refrigerants as required by the industry-recognized evaluation
specifications.
2. The maintenance and repair of the equipment can only be carried out in accordance with the
method recommended by the equipment manufacturer. If other professionals are required to
assist in maintaining and repairing the equipment, it should be carried out under the supervision
of personnel qualified to use flammable refrigerants.
Site inspection
Before repairing heat pumps using R32 refrigerant, safety inspections must be carried out to
ensure that the risk of fire is minimized. When servicing the refrigeration system, the following
precautions should be observed before handling the system.
Operational procedure
Operations should be carried out under a controlled procedure to ensure that the risk from
combustible gases or vapors is minimal during operations.
General operating area
All maintenance people and other people in the operation area should be aware of the
character of the operation being performed. Avoid working in confined Spaces.Work areas
should be properly isolated to ensure safe working conditions within the work area by
controlling combustible materials.
Check whether the refrigerant is present
Refrigerant monitors are necessary to be used in the area before and during operations to
ensure that technicians are aware of the presence of potentially combustible gases.Ensure that
the leak detection equipment used is suitable for R32 refrigerants, such as sparkless, fully sealed,
or intrinsically safe.
Placement of fire extinguishers
The applicable fire extinguisher should be located close to the cooling system or related
components during hot working operations.The refrigerant injection area should be equipped
with dry powder or carbon dioxide fire extinguisher.
No fire
Any fire sources should not be used when performing work related to exposed pipes that hold or
have held R32 refrigerant which may cause a fire or explosion hazard. All sources of fire,

Safety precaution
10
including smoking, should be kept away from the area of installation, repair, removal and
disposal of combustible refrigerants that may release into the surrounding environment.Before
starting operations, check the environment around the equipment to ensure that there is no
danger of flammability or fire.There should be a "no smoking" sign.
Ventilated area
Ensure that the work area is open or fully ventilated before opening the system or performing
thermal processing operations. Keep ventilation during operation. Ventilation will safely dilute the
leaked refrigerant and quickly discharge it into the atmosphere.
Inspection of refrigeration equipment
If the electrical components are replaced, these electrical components should be installed in
accordance with the purpose of use and correct operation regulations. At all times, you should
follow the manufacturer's maintenance and repair guidelines. If you have any questions, please
consult the manufacturer's technical department. For installations using R32 refrigerant heat
pumps, the following inspection items apply:
1. The filling amount should be determined according to the marked amount on the heat pump’s
rating plate.
2.The ventilation equipment should operate normally, and the vents should be unobstructed.
3.If an indirect refrigeration cycle is used, please check whether there is refrigerant in the
secondary circuit.
4. The logo or marking on the heat pump should be clearly visible, and the ambiguous signs and
symbols should be corrected;
5. Refrigeration piping or electrical components should not be installed in an environment that
contains components that may be corrosive to contact the refrigerant, unless the electrical
components themselves are made of anti-corrosion materials or take appropriate anti-corrosion
measures.
a. Toavoid electrical shock, make sure to disconnect power supply 1minute or more
before operating the electrical part. Even after 1minute, always measure the
voltage at the terminals of main circuit capacitors or electrical parts and, before
touching, make sure that those voltages are lower than the safety voltage.
b. Power supply wire line size must be selected according to this manual. And
must be grounded.
c. Don’t put in hands or stick to air outlet grill when fan motor are working.

Safety precaution
11
d. Don’t use wet hand touch wire lines, and don’t pull any wire lines of the unit.
e. Water or any other kind liquid is forbidden to poured into the unit.
f. Select correct air breaker and leakage protection switch.
g. Don’t touch the fin of source side heat exchanger, it may hurt your finger.
h. If any wire line is loose or damaged, suggest let qualified person to fix i

Important parts in heat pump
4.Heat pump installation and wiring
5
6
7
8
9
10
12
11
13 14 15 16
18
20
21
22
271
26
24
23
228
19
3
4
25
17
CGK025V3L-B、CGK-025V3L-B、CGK030V3L-B、CGK-030V3L-B、CGK040V3L-B、CGK-040V3L-B
No.
Component
No.
Component
1
Chassis
15
Variable frequency drive
2
Compressor
16
Back net
3
Economizer
17
Cover
4
Electric box
18
Reservoir
5
Front service panel
19
Electronic expansion valve
6
Front wire mesh
20
Rear service panel
7
Front air outlet frame
21
Condenser
8
Side net
22
outlet
9
Column
23
Variable frequency drive cover plate
10
Evaporator
24
Right side panel
11
Wind leaf
25
Four way valve
12
Motor support
26
Water flow switch
13
Motor
27
Inlet
14
Middle diaphragm
28
Pressure gauge

Important parts in heat pump
13
1
23
4
5
6
7
8
9
10 11 12 13 14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
CGK050V3L-B、CGK-050V3L-B、CGK060V3L-B、CGK-060V3L-B
No.
Component
No.
Component
1
Chassis
15
Variable frequency drive
2
Compressor
16
Back net
3
Economizer
17
Cover
4
Electric box
18
Reservoir
5
Front service panel
19
Electronic expansion valve
6
Front wire mesh
20
Rear service panel
7
Front air outlet frame
21
Condenser
8
Side net
22
outlet
9
Column
23
Variable frequency drive cover plate
10
Evaporator
24
Right side panel
11
Wind leaf
25
Four way valve
12
Motor support
26
Water flow switch
13
Motor
27
Inlet
14
Middle diaphragm
28
Pressure gauge

Heat pump size
14
1103
475
420
453 808
91 479
200
730
CGK025V3L-B、CGK-025V3L、GK030V3L-B、CGK-030V3L-B
960
1105
420 453 475
730
91 479
175
CGK040V3L-B、CGK-040V3L、

Heat pump size
15
420 453
475
730
1350
459 479
131
CGK050V3L-B、CGK-050V3L-B、CGK060V3L-B、CGK-060V3L-B

Installation diagram
16
Primary circulation system
Heat pump
Controlling center
Room thermostat 3
Room thermostat 4
Floor heating 1
Floor heating 2
Room thermostat 2
Room thermostat 1
P2
OFF
C
OFF
C
OFF
C
OFF
C
fan coil 1 fan coil 2
SPRSUN DC inverter air source heat pump
water tank
Heat pump controller
Symbol Name
3-way valve
2-way valve
Ball valve
Non-return valve
Filter
Water pump
Temp sensor
Release valve
Expansion tank
Notice:
1. Pls select the right modes according to your demand then install it according to the
installation diagram. If only hot water function required, pls select heating+hot water mode
, and then put the hot water sensor into the hot water tank.
Fan coil can be controlled by linkage with the secondary circulation pump . Meanwhile,
a passive linkage thermostat shall be installed.
3.This is rimary circulation system
,
If you not need to control the temperature by different
zone
，
you can use this system
.

Installation diagram
17
Secondary circulation system
Heat pump
Controlling center
Room thermostat 3
Room thermostat 4
Floor heating 1
Floor heating 2
Room thermostat 2
Room thermostat 1
P2
OFF
C
OFF
C
OFF
C
OFF
C
fan coil 1 fan coil 2
SPRSUN DC inverter air source heat pump
BV
0.1-0.6Bar
water tank
Heat pump controller
Symbol Name
3-way valve
2-way valve
Ball valve
Non-return valve
Filter
Water pump
Temp sensor
Release valve
Expansion tank
Notice:
1. Pls select the right modes according to your demand then install it according to the
installation diagram. If only hot water function required, pls select heating+hot water mode
, and then put the hot water sensor into the hot water tank.
2. Two-way valve and BV valve are optional for installation. Only If you need to control the
temperature by different zone, then pls install both.
3. Fan coil can be controlled by linkage with the secondary circulation pump . Meanwhile,
a passive linkage thermostat shall be installed.

Heat pump installation notes
18
1) The heat pump must be installed in open space. Normally is installedon the
roof of house.
2) The unit should be placed in dry and well-ventilated environment. If the
environment is humid, electronic components may get corroded orshort
circuit.
3) Heat pump mustn’t be installed in the environment wherecorrosive,
volatile, or flammable liquid or gas exists.
4) Because of the noise is a little loud, please don’t install the heatpump near
bedroom or living room or meeting room.
5) The bottom of the heat pump should be at least 200mm higher than ground,
because rain water, snow may enter inside if the installation is on ground. Heat
pump can be installed on concrete basic or steel support.
6) Please install a shed for the heat pump, otherwise, rain water can reduce the
lifetime of the shell, and snow may cover the air outlet.
7) Water drainage ditch should be set around the heat pump, whenheat
pump is working, there is condensing water flow down, or when defrosting,
there are plenty of water flow down too.
8) Heat pump should far away from kitchen exhaust, because thefinned tube
is not easy to clean if there is oil on it.

19
Distances to barrier and ground
≥
500
≥
500
≥
200
≥
500
Ground
≥
500mm
≥
2000mm
Back
Front
≥0.5

20
Basic of installation
1) Heat pump must be installed on flat concrete blocks or a raisedconcrete
platform, or steel bracket.
2) Between heat pump and basic or bracket, at leas 4pcs anti-shockpads should
be placed
Anti-shock pad
Concrete basic Steel bracket
Expansion bolt
3) Before make basic or bracket, please check heat pump dimension
4) Before fix heat pump on basic, please confirm heat pump direction accordingto
project design.
5) Normally use expansion bolt to fix heat pump on concrete basic.
6) Make sure circulating water pipe must be ≥DN25 (or PPR32), and pipes mustbe
insulated.
7) When install water temp sensor on pipe or in water tank, make sure tempsensor will
not touch water directly, best through a sensor tube. Like below picture.