W'eau WFI-028T User manual

Installation & Operation Manual
Swimming Pool Heat Pump
Model No.: WFI-028T/035T
ENGLISH/ DUTCH
Thank you very much for purchasing our product,please keep and read this manual carefully before
you install heat pump.

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Fluorinated greenhouse gas – (R32)
The device contains the fluorinated greenhouse gas (R32) which is required for the device to work.
Industrial designation HFC-32
Common designation R32
Global warming potential (GWP) 675
Further information can be found on the device itself or the Specifications.
WARNING!
Risk of fire and explosion through leaking finned heat exchanger!
The refrigerant circuit of the finned heat exchanger contains highly pressurised, easily flammable,
odourless gas. Risk of fire and explosion in the event of uncontrolled gas leakage.
- Action of filling gas must be conducted by professional with R32 operating license.
- Keep the heat pump away from heat sources and naked flames.
- Do not drill into or scorch the heat pump.
- Do not use any objects apart from those permitted by the manufacturer to speed up the defrosting
process.
- Immediately shut off the heat pump if you suspect a gas leakage.
- The refrigerant is odourless. Always keep ignition sources away from the installation site of the heat
pump.
- Contact an authorized expert if you suspect a gas leakage.
WARNING!
Risk of electric shock!
A faulty electrical installation or a mains voltage that is too high can lead to electric shock.
- Have the installation, initial start-up and maintenance of the heat pump carried out by authorized
technician only.
- Please always cut the power supply if you want to open the cabinet to reach inside the heat pump
as there is high voltage electricity inside.
- Only start work on the heat pump after checking all safety regulations.
- Only connect the heat pump if the mains voltage from the power socket matches the voltage
indicated on the rating plate.
- Do not operate the heat pump if there is visible damage or the mains cable or the mains plug is
defective.
- Do not open the housing. Leave repairs to qualified specialists. Liability and warranty claims are

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excluded in the event of repairs carried out on your own, improper operation.
- Ensure that children do not insert any objects into the fan blade and heat pump.
- Ensure that the electrical system to which the heat pump is connected has an earth conductor.
- If the unit would be installed where is vulnerable to lightning stroke, lightning protection
measurements must be carried out.
ATTENTION!
- The manufacturer declines any responsibility for the damage caused with the people,objects and of
the errors due to the installation that disobey the manual guideline. Any use that is without
conformity at the origin of its manufacturing will be regarded as dangerous.
- Please always keep the heat pump in the ventilation place and away from anything which could
cause fire.
- Don’t weld the pipe if there is refrigerant inside machine. Please keep the machine out of the
confined space when make gas filling by the authorized technician.
- Please always empty the water in heat pump during winter time or when the ambient temperature
drops below 0℃, or else the Titanium exchanger will be damaged because of being frozen, in such
case, it will be out of warranty for this machine.
* Content
1. Accessories description
2. Attention for safety
3. Installation of the unit
4. Specifications
5. Electrical Wiring
6. Instruction of operation
7. Adjusting and Initial operation
8. Operation and maintenance
9. Error codes & Solutions
10. WiFi-Function

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1. Accessories description
Each unit produced by our factory is with the following accessories:
For function you need to purchase at least the following parts for each unit:
NOTE
The types and quantity of the water pipes, valves, filter equipment, sterilizing equipment which used for
the swimming pool heating/circulation pipe system, depend on the project design.
We suggest not to install auxiliary electric heaters in the system. If must install auxiliary electric heaters,
it should be operated by the specialized persons, and our company has no responsibility for all the
problem cause by the auxiliary electric heater.
Illustrations of machine
No.
Name
Qty.
Use
1
Instruction Manual
1 PC
Guide users to install the system
2
Drain-pipe
1 PC
Used for draining the condensate water
3
Drain-pipe connector
1 PC
Connect the drain pipe to the heat pump unit
4
Rubber shock absorber
4 PCS
Reduce vibration and reduce noise
5
Heat pump unit
1 SET
For heating water
6
Water connection
2 SET
Connect the piping system
No.
Name
Qty.
use
1
Water pump
1
Cycle the heated water
2
Filter system
1
Protect the heat pump from pool water
3
Water pipes system
1
Connect the equipment and make circulation

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2. Attention for safety
Range of application:
1.Power supply: 380~415V/3N~50/60Hz.
2.Environment temperature: -15°C〜43°C
3.Water temperature range: 8°C~40°C in Heating function
8°C~28°C in Cooling function
●Confirm the ground connection, if the ground connection is not correctly done, it may cause
electric shock. And please cut off the power in the lightning storm weather.
●If install the heat pump in a small room, it must keep good ventilation.
●The main power switch should be out of the reach of Children.
●Don't put finger or stick into the air inlet or air outlet as the high-speed rotor may cause injury.
●When an exception happened (burning smell etc..), turn off the manual power switch immediately
and contact with after-sale service department.
●When the unit needs to be removed or re-installed or repaired, please entrust after-sale service
department and specialized personnel to do it. If the installation/ maintainence is not well done, it
may cause unit operation failure, electric shock, fire, hurt, leaking, etc.
●Must not be unauthorized reformed, otherwise it may cause electric shock or fire.
●Must not install the unit with combustible around.
●Confirm the installation base is strong enough to avoid falling of the heat pump.
●Confirm leakage protection switch is installed to avoid electric shock or other issues.
●When cleaning the unit, the operation should be stopped, and power switch should be turned off.

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3. Installation of the unit
3.1 Installation Illustration
Above illustration is just for the reference, please take the advice of authorized installers.
3.2 Advised installation space
Keep the following indicated space for operation and maintenance when make the installation.

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3.3 Additional By-pass kits
The additional By-pass kits is suggested to be put into the piping system to get the better adjustment
of water flow.
3.4 Heat pump unit size (mm)
A
B
C
D
E
F
G
H
I
J
WFI-028T/035T
738
1084
1056
710
445
421
440
102
27
17

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3.5 Heat pump Exploded View
No.
Parts
No.
Parts
1
Fan protective gill
15
Water flow switch
2
Front panel
16
Titanium heat exchanger
3
Fan blade
17
Right structure
4
Fan motor
18
Manometer
5
Left panel
19
Right panel
6
Left structure
20
Control panel
7
Evaporator
21
Electrical terminal cover
8
Fan motor mount
22
Electrical terminal block
9
Upper structure
23
Electrical cable support
10
Electric box cover
24
Electronic expansion valve
11
Electrical box
25
Reactive resistance
12
Top cover
26
Bottom panel
13
Plastic net
27
Four-way valve
14
Middle panel
28
Compressor

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3.6 Electrical connection
*Suggested power cable specification
Model
Power Cable Specification
WFI-028T/035T
5*2.5mm²
Terminal
Terminal cable max. 4 mm²
*Electrical connection
Position A,B,C,N and is for the power connection of our heat pump.
Position P1 and P2 is for the Single phase water pump.
3.7 Condensation drainage
When machine running, there will be some condensation water on the base tray, which is the normal
situation. Please you can use the drainage jet and hose at the bottom of machine to drain the
condensation water. See below.

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4. Specifications
4.1 Specifications
Model No.
WFI-028T
WFI-035T
* Heating Capacity at Air 26℃, Humidity 80%, Water 26℃
Heating Capacity (kW)
28~6.8
35~8.8
Power Input (kW)
3.97~0.43
5.15~0.56
COP
15.8~6.8
15.8~6.8
* Heating Capacity at Air 15℃, Humidity 70%, Water 26℃
Heating Capacity (kW)
23~5.5
25.5~6.4
Power Input (kW)
4.7~0.72
5.2~0.84
COP
7.6~4.9
7.6~4.9
* Cooling Capacity at Air 35℃, Water 29℃in, 27℃out
Cooling Capacity (kW)
14.9~3.8
19.3~4.9
Power Input (kW)
3.92~0.57
5.08~0.73
EER
6.7~3.8
6.7~3.8
* General data
Power supply
380~415V/3N~50/60Hz
Max Power Input (kW)
6.43
6.93
Max Current (A)
7.9
11.3
Water Flow Volume (m3/h)
9
12
Advised pool size m3
(With pool cover)
70~160
85~190
Refrigerant
R32
Heat Exchanger
Screwed titanium tube
Water connection (mm)
50
Air Flow Direction
Horizontal
Kind of defrost
by 4 way valve
Water temp. in heating (℃)
8~40
Water temp. in cooling (℃)
8~28
Working temp. range (℃)
-15~43
Casing Material
ABS
Water Proof Level
IPX4
Noise level dB(A) 10m
27~38
29~39
Noise level dB(A) 1m
47~58
49~59
Net Weight (kg)
88
90
Gross Weight (kg)
99
102
Net Dimensions (mm)
1085*420*740
Package Dimensions (mm)
1150*460*865
* Above data are subjects to modification without notice.

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5. Electrical wiring
5.1 Electric wiring diagram
WFI-028T/35T

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6.Instruction of operation
6.1 Wire controller (Buttons and Icons)
6.2 Start up & Locking
Attention:Before you start the machine, please make sure the filtration pump is
running and there is water flow goes through the heat pump.
Hold the button for 3 seconds to switch the heat pump ON or OFF.
On the main interface, hold and for 3 seconds to lock or unlock the controller.
When the controller is locked, the icon appears.

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6.3 Mode Selected
Hold the button for 3 seconds to change the below three operating functions each time:
Heating function Cooling function Auto function
Under Auto function, if the real situation is in Heating, it will show and , if the real situation is
in Cooling, it will show and .
Under Heating function, press button to change the below two running modes each time:
ECO mode: Choose this mode that the heat pump operates silently.
BOOST mode: Choose this mode that the heat pump operates powerfully.

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6.4 Set the required temp.
On the main interface, press or to adjust the required water temp. Of your pool, then
press to save the setting.
Or you can adjust the Parameters P01/P02 to set the required water temp.
6.5 Clock setting
Hold and for 3 seconds to enter Clock setting interface.
Clock display on left bottom flashes. Change the Hours using or , press to save the
Hours, the Minute flashes, press or to adjust the Minute. Press to save the data.
6.6 Timer setting

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Hold the button for 3 seconds to enter the setting of Timer ON & Timer Off groups.
Then use the same method to make the setting of Hour and Minute like Clock setting.
Pay attention: There are 3 groups Timer for your every day setting.
See above photo, the icon ‘ON’will flash when setting the Timer ON. The icon ‘OFF’will flash when
setting the Timer OFF.
The last data is the Order No. of your current setting for Timer group. It will flash under Timer
setting.
Press to save the Timer setting and back to the main interface, it will show Numbers of Timer
groups you have set on the main interface.
Cancellation of Timer: When the Timer On is same to Timer Off, the current Timer group has been
canceled.
6.7 Definition of other icons
: Defrosting when it flashes
: WiFi connected. It will flash under WiFi connecting.

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: It will flash when there is Error code or system protection or water flow protection.
6.8 Manual defrosting
Hold and for 5 seconds, and when the Piping temp. is below than Exit defrosting temp.,
the system can enter into Manual defrosting.
6.9 Factory setting recovery
When machine has been connected power cable and under standby situation, hold + +
+ for 3 seconds to recover factory setting.
6.10 Parameters Setting
On the main interface, hold for 3 seconds to enter Parameter setting. Press and
to check the parameter from P01~P05, press to select the parameter, then press
and to adjust the data, then press again to save the data. Press to go back the
main interface.

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Code
Description
Range
Default
P01
Desired water temp. in Heating mode
8℃~40℃
27℃
P02
Desired water temp. in Cooling mode
8℃~28℃
27℃
P03
Desired water temp. in Auto mode
8℃~40℃
27℃
P04
Adjustment of water temp. difference before restart
1℃~18℃
1℃
P05
Stop once the temperature is reached
0=Non stop, 1=Stop
1
6.11 Running Parameter checking
On the main interface, hold for 3 seconds to enter Parameter checking. Press and
to check the parameter from A01~A14. Press to go back the main interface.

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Code
Description
Unit
A01
Inlet water temp.
℃
A02
Outlet water temp.
℃
A03
Ambient temp.
℃
A04
Exhaust temp.
℃
A05
Gas return temp.
℃
A06
Outer piping temp.
℃
A07
Inner piping temp.
℃
A08
EEV aperture
A09
Compressor current
A
A10
Radiator temp.
A11
Voltage value
V
A12
Frequency
Hz
A13
Fan motor speed
r/min
A14
Fan motor speed
r/min
7.Adjusting and Initial operation
7.1 Attention
● Open the valve of water system, inject water into the system, and exhaust air inside.
● Do adjustment after electrical safety inspection.
● After the power is switched on, start the test running of heat pump, to check if it can function well.
● To avoid dangerous accident, the forced operation is forbidden.
7.2 Preparation Before Adjustment
● The system is installed correctly.
● Tubes and lines are putted in the right place.
● Accessories are installed.
● Ensure the smooth drainage.
● Ensure the perfect insulation.
● Correct connection of ground lead.
● The supply voltage can meet the requirement of rated voltage.
● Air inlet and outlet function can work well.
● Electrical leakage protector can work well.
7.3 Adjustment Process
● Check if the switch of the controller can work well.

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● Check if the function keys of the controller can work well.
● Check if the drainage system can work well.
● Check if the system can work well after starting up.
● Check if the water outlet temperature is in correct situation.
● Check if there is vibration or abnormal sound when the system is functioning.
● Check if the wind, noise and condensate water produced by the system affect the environment
around.
● Check if there is refrigerant leakage.
● If any Error codes occur, please check the instructions for the detailed info.
8. Operation and maintenance
8.1 To ensure the well functioning, the system should be checked and maintained after a
period of time. During the maintenance, please pay attention to some points below:
● When you need open the cabinet and make inside inspection, please do cut off the electricity
power in advance.
● To ensure the stable running, please do not adjust any setting.
● Pay close attention to whether all the operation parameters is normal during system working.
● Examine regularly whether the electrical connection is loose, if yes, fasten it on time.
● Examine regularly the reliability of the electrical components, change all the failed or unreliable
components on time.
● The dirt retention on the surface of evaporator fin should be cleaned every 6 months.
● After long downtime, if we restart the equipment, we should make following preparations: examine
and clean the equipment carefully, clean the water pipeline system, examine the water pump, and
fasten all the wire connections.
● Replacement parts must use the original accessories, can not be replaced by other similar
accessories.
8.2 Refrigerant filling
Examine the refrigerant filling condition through reading the data of gauge, also the air suction and
exhaust pressure. If there is leakage or changing components of the refrigeration circulation system,
please ask for the assistant of professional technicians.
8.3 Leak detection
During leak detection and air tightness experiment, never let the refrigeration system filling oxygen,
ethane or other flammable harmful gas, we can only adopt compressed air, fluoride or refrigerant for