KONNEN RF8I/bd User manual

Installation manual
DC INVERTER AIR TO WATER
HEAT PUMP
MONOBLOCK TYPE
Please read this manual carefully before using this product and keep it for
your reference.

1
DC INVERTER AIR TO WATER
HEAT PUMP
Product parameters & installation instructions
RF8I/bd
RF12I/bd
RF16I/bd

2
Table of Contents
Description.................................................................................. ............................................1
Basic information ....................................................................................................................1
Items in the product packaging box .........................................................................................1
Tools required to install the unit............................................................................................ .3
Safety instructions.................................................................................................................. 3
Caveat.....................................................................................................................................4
Note........................................................................................................................................5
Materials needed....................................................................................................................6
Equipment installation diagram...............................................................................................7
Equipment Overview....................................................................... ...................................... 8
RF8I/bd overall size.......................................................................................... ......................8
RF8I/bd machine internal dimensions.....................................................................................8
RF12I/bd /RF16I/bd external unit dimensions.........................................................................9
RF12I/bd /RF16I/bd external machine internal dimensions.....................................................9
Overall machine electrical wiring diagram..............................................................................12
RF8I/bd wiring diagram..........................................................................................................11
RF12I/bd wiring diagram....................................................................... ................................12
RF16I/bd wiring diagram........................................................................................................13
Field wiring............................................................................................................................14
Plumbing Engineering ............................................................................................................15
Overall machine installation instructions............................................................................... 16
Precautions for selecting the installation location...................................................................16
Installation space ...................................................................................................................17
Install the whole machine.......................................................................................................17
Injecting refrigerant ...............................................................................................................17
Pre-operation check .............................................................................................................. 18
Check before opening.............................................................................................................18
Display interface operation instructions..................................................................................19
Appendix.................................................................................................................................23
Failure and protection.............................................................................................................23
Operating parameter list ........................................................................................................26
Warranty Card........................................................................................................................28

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Please read the instructions carefully before installation, please do not discard.Please
save the manual for future reference.
Make sure it is installed by a professional before running the unit. If in doubt, please
contact your dealer for advice and information.
If the unit is not used for a long time, it is recommended not to turn off the power; if the
power is turned off, the product protection device (such as the pump anti-lock function
and antifreeze device) will not be available.
Basic information
The air source heat pump main unit is recommended to be installed in a well ventilated
area. The unit can be connected to the fan coil, underground heating equipment, low
temperature radiator and other end connections.
A backup heater is built into the system to assist in heating at low temperatures. The
backup heater can also be used as a backup heating when the external unit fails.
Items in the product packaging box
Before installation, please make sure that all items are in the carton.
Carton of Monoblock heat pump
Items
Picture
Qty.
Instruction manual
1
HEAT PUMP
RF8I/bd
1

4
HEAT PUMP
RF12I/bd
RF16I/bd
1

5
Tools required to install the unit
1. Impact drill
2. Level
3. Water pipe bending equipment
4. Tape measure
5. Torque wrench
6. Pipe cutting machine
7. Sleeve group
8. Screwdriver
9. Wire stripper
10. Bow saw
11. Corresponding rule hole opener
12. Adjustable wrench
13. Protective equipment such as gloves and glasses
Safety instructions
To prevent injury to users and others, or property damage, be sure to follow the
instructions below. Incorrect operation may result in injury or damage.
Please install the unit in compliance with local laws, regulations and standards; check
the voltage and frequency; the unit is only used for grounding sockets, and the unit must
have independent switches.
The following security defenses need to be considered:
- Please read the following warnings before installation.
- Be sure to check the details that need attention, including security issues.
- After reading the installation instructions, be sure to save them for future reference.

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Caveat
Ensure that the unit is installed safely and reliably.
If the unit is not secure or not installed, it will cause damage. The minimum required
support weight is 20g/mm2. When installing the machine in a closed area or limited space,
please consider the size of the room and the ventilation to prevent suffocation caused by
refrigerant leakage.
Use a specific wire and secure it to the terminal block (this connection prevents the
wire from being applied to the part).
Wiring errors can cause fire.
Please connect the power cord in strict accordance with the wiring diagram on the
manual to avoid causing burnout of the equipment or fire.
When installing, be sure to use the correct or specific materials.
Failure to use parts or materials may result in fire, electric shock, or falling of the
machine, resulting in injury.
Safety grounding installation, please read the installation instructions.
Improper installation may result in fire, electric shock, falling of the machine, or water
leaking, resulting in injury.
Electrical work according to the installation manual, be sure to use professional
tools.
If the power supply capacity is insufficient or the circuit is incomplete, it may cause
fire or electric shock.
The unit must have a grounding device.
If the power supply does not have a grounding device, be sure not to connect the
machine.
Non-professional installers, please do not attempt to move or repair the machine.
Unreasonable movement or maintenance of the unit may cause water leakage,
electric shock, or fire, resulting in injury. Need to repair or maintain the machine, please find
a professional technician.
Do not unplug or plug in the power during operation.
It may cause fire or electric shock.
Do not touch or operate the machine when the hands are wet.
It may cause fire or electric shock.
Do not place heaters or other electrical appliances near the power cord.
It may cause fire or electric shock.
Please note that water cannot be poured directly from the machine. Do not allow
water to enter the electrical components.
It may cause fire or electric shock.

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Note
Do not install the unit in a location where there may be flammable gas leaks.
If there is a flammable gas leak and gathers around the unit, it will cause an
explosion.
Drainage systems and piping work are carried out according to the instructions.
If the drainage system or piping is defective, water leakage will occur and should
be disposed of immediately to avoid other household products getting wet and
damaged.
Do not clean the unit when the power is on.
When cleaning the machine, turn off the power. Failure to do so may result in
injury from a high speed fan or electric shock.
Do not continue to run the unit when there is a problem with the unit or if there is a
smell. Please turn off the power and stop running the unit. Doing so may cause
electric shock or fire.
Please be careful when the product is not packed or when it is installed.
Sharp edges can cut people, paying special attention to the edges and fins of the
heat exchanger.
After installation or after repair, please check if the refrigerant or refrigerant will
leak.
If the refrigerant is not enough, the unit will not work properly.
The installation of the external unit must be flat and firm
Avoid abnormal vibration and noise
Do not put your fingers into the fan and evaporator. High-speed fan can cause
serious injury
This device is not designed for people who are physically or mentally weak
(including children) and who do not have experience and who do not understand the
heating system. Unless it is used under the direction and supervision of the
responsible person, or has received training on the use of this equipment. Children
should be used under the supervision of an adult to ensure that they use the device
safely.
If the power cord is damaged, it must be replaced by the manufacturer or its
service agent, or the same professional, to avoid danger.

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Materials needed
Monoblock type heat pump power line: three-core insulated wire; 9KW with ≥6mm2 three-
core insulated wire; 15KW and 18KW with ≥10mm2 three-core insulated wire
When wiring it requires isolation device
Low voltage cable: 0.75mm shielded twisted pair
Note: All control wires must be installed 300mm away from the main wire.
Inlet and outlet pipe requirements (internal thread)
RF8I/bd 3/4”
RF12I/bd 1”
RF16I/bd 1”
Heating operation range
Working Condition
Outdoor temp.
Water temp.
Dry bulb ℃
Wet bulb ℃
Water
inlet ℃
Heating
Max.
43
/
55
Min.
-30
/
10

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Equipment installation diagram
Note
1. In the winter heating season, the unit is strictly forbidden to power off to
ensure the normal operation of the unit's antifreeze function.
2. When the unit is not in use for a long time, please drain the water from the
system.
3. If the unit is not used after being used for a long time, please disassemble the
special exhaust port of the pump first, and use a screwdriver to check whether the
pump rotor can run normally. If it cannot be rotated normally or the rotation is
blocked and the rotation is not smooth, you can use a screwdriver. Rotate a few more
turns until the rotor is running freely. If you have any questions, please call the after-
sales service.

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Equipment Overview
RF8I/bd Dimension:
RF8I/bd Internal structure

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RF12I/bd
Dimension:
RF12I/bd Internal structure

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RF16I/bd Dimension:
RF16I/bd Internal structure

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RF8I/bd Wiring diagram
RF12I/bd wiring diagram

14

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RF16I/bd Wiring
diagram

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Heat pump external wiring:
Note: For specific wiring, please refer to the wiring diagram.
Grounding of the power supply should select the grounding point connection that
meets the requirements;
Maximum input current of the whole machine (for reference only, subject to the
machine nameplate).
Model
Rated input power /
current
E-heater input
power / current
Total max.
input power /
current
RF8I/bd
4400W /20A
1500W/ 6.8 A **
20+6.8A**
RF12I/bd
5200W /24A
3000W/13.6 A **
24+13.6A**
RF16I/bd
6600W /30A
3000W/13.6 A **
30+13.6A**
“**”Auxiliary heater
Field wiring
Caveat
When wiring, please turn off the power;

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All wiring and component installation work should be performed by a licensed
electrician and comply with the laws and regulations of the country in which it is
located;
Wiring work should be carried out in strict accordance with the circuit diagram and
instructions of the machine;
Use a dedicated power supply, do not use the power of other devices;
Be sure to install the ground wire. Do not connect the ground wire of the machine
to a public pipe, lightning arrester, or mainframe mount as a grounding point.
Unreliable ground or grounding points can easily cause electric shock accidents;
Install the leakage protector, otherwise it may cause electric shock.
Water pipe engineering
Check the water cycle
Note: Y-type filter must be installed at the water inlet.
Before proceeding with the installation, please check the following points:
*The maximum water pressure does not exceed 10 bar.
* This system does not have a shut-off valve. For the convenience of service and
maintenance, please install one at each inlet and outlet. Pay attention to the installation
position of the closing valve. Note that the direction of the opening/closing valve is
important for maintenance service.
* A drain valve should be installed on all the bottoms of the system to allow the water to
drain completely during maintenance.
* There must be a vent on the top of the system. The location of the vents is chosen for
easy maintenance.
* Pay attention to the components in the piping to be able to withstand the water
pressure.
Do not use parts that have not been sprayed. These parts are severely corroded
because copper pipes are used in the water circulation inside the machine.
When using a three-way valve or a two-way valve in a water circuit cycle, the
maximum switching time of the valve must be less than 60 seconds.
Water injection
1. Connect the water supply system to the drain and water inlet
2. Make sure the automatic vent valve is open (at least two turns).
3. Fill the water until the water column pressure gauge shows that the pressure is close to 2
bar
Use the exhaust valve to drain the air from the water as much as possible. In order to avoid
air in the waterway, the equipment may malfunction.
4. Spare heater:
Check that the container of the backup heater is filled with water because the pressure relief
valve is open. Water must be removed from the valve.
Note
When water is injected, the air in the system may not be completely discharged. The
remaining air is automatically expelled by the exhaust valve after the machine has been
running for one hour. May be you need to inject with water later again.
The water pressure displayed by the water column pressure gauge depends largely on the
water temperature (the higher the water temperature, the greater the water pressure)

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However, the water pressure should be kept above 0.3 bar at any time to prevent air from
entering the water cycle.
The machine may discharge excess water through the pressure relief valve
The quality of the water must comply with relevant standards or according to European
Standard 98/83EC
Rated water flow
RF8I/bd
1.2 m³ /h
RF12I/bd
1.98 m³ /h
RF16I/bd
2.06m³ /h
Machine installation
Installation guide
Select the installation location considerations
Caveat
Please take appropriate measures to prevent the outside machine from being used as a
habitat by some small animals.
Small animal contact with electrical parts may cause the unit to malfunction, smoke or
catch fire. Please keep the environment around the unit clean.
1. Choose a location that is strong enough to support the weight and vibration of the unit
so that the noise from the unit's operation is not amplified.
2. Choose a place where the unit can discharge hot air, or where the noise of the unit
does not cause problems for neighbors or users.
3. Avoid installing near the bedroom, and the noise of the unit operation will cause
trouble.
4. Space should be sufficient to move the unit.
5. There must be sufficient ventilation space, and there should be no obstacles in the air
inlet and outlet.
6. There should be no flammable gas leakage near the installation point.
7. Install the unit, power cord and wires, and keep at least three meters away from the
TV and other radios to avoid image quality and sound quality interference.
8. Due to radio waves, even if the distance is more than three meters, there will still be
electromagnetic interference.
9. At the seaside or in high air salinity, the life of the machine may be shortened due to
corrosion.
10. When the external machine is defrosting, the water will flow out from the outside
machine. Please do not place anything that must be kept dry under the unit.

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Installation space
Installer
Installation of the whole machine
When installing the unit, please refer to the installation guide and select a suitable
installation location.
1. Check the strength and level of the installation position. The unit will not cause vibration or
noise after installation.
2. Prepare four sets of basic M8 bolts, nuts and washers. (on request)
3. According to the basic diagram, fix the unit with the basic bolts. It is best to screw it into
the foundation bolt, leaving 20mm on the base surface
Wall brackets are not available in the outside unit unless there is a specific
installation guide in the wall bracket.
Injecting refrigerant
The refrigerant of the whole machine is injected by the manufacturer.
Important information about refrigerant
The product contains fluorinated greenhouse gases mentioned in the Kyoto Protocol.
Do not discharge the gas into the atmosphere.
Refrigerant type: R410A
Global warming potential: 1975
Note: The State may require the machine to have a text in its official language when
fulfilling EU regulations on specific fluorinated greenhouse gases. Therefore, the
machine comes with a multi-language version of the label on fluorinated greenhouse
gases. Paste the indication on the back of the label.