Kaisai KHY-12PY3 User manual

USER MANUAL
HEAT PUMP AIR-TO-WATER R290
EN
KHY-12PY3
KHY-15PY3

HEAT PUMPHEAT PUMP
AIR-TO-WATERAIR-TO-WATER
User Manual
Thank you for choosing our product.
To ensure proper operation, please read the manual and keep it for future reference.
PL
KLI MAT Y Z ATO R
ŚCIENNY TYPU SPLIT
Instrukcja obsługi
Dziękujemy za wybór naszego produktu.
Dla zapewnienia prawidłowej obsługi, zapoznaj się z instrukcją i przechowuj ją do wykorzystania w przyszłości.
W przypadku zagubienia instrukcji obsługi, skontaktuj się z lokalnym dystrybutorem lub odwiedź stronę www.kaisai.com lub
prześlij wiadomość email na adres: [email protected], w celu uzyskania wersji elektronicznej instrukcji.
KHY-12PY3
KHY-15PY3

Contents
1. Introduction .................................................................................................... 5
2. Safety instructions.......................................................................................... 6
3. Features of the device..................................................................................... 8
4. Functions......................................................................................................... 9
4.1. Advanced control....................................................................................................................................................9
4.2. Modern design.........................................................................................................................................................9
4.3. Easy installation.......................................................................................................................................................9
4.4. Quiet operation........................................................................................................................................................9
4.5. High heat exchange coecient...........................................................................................................................9
4.6. Wide operating range.............................................................................................................................................9
5. Maintenance ................................................................................................. 10
6. Inspection .....................................................................................................10
6.1. Preparation for Inspection and Maintenance ............................................................................................... 10
6.2. Product Cleaning.................................................................................................................................................. 11
7. Accessories ................................................................................................... 11
7.1. Accessories included with the unit .................................................................................................................. 11
8. Precautions ................................................................................................... 12
8.1. Before Installation ................................................................................................................................................ 12
8.2. Handling and Transportation............................................................................................................................ 12
9. Operation and Inspection............................................................................. 12
9.1. Display Interface Description............................................................................................................................ 12
10. The functions of the Domestic Hot Water (DHW).....................................19
11. 3-way cooling valve.....................................................................................21
12. SG Ready......................................................................................................21
12.1. Schematic of the mainboard .......................................................................................................................... 21
12.2. Smart Grid Ready=1.......................................................................................................................................... 21
12.3. Smart Grid Ready=2.......................................................................................................................................... 22
12.4. Parameters .......................................................................................................................................................... 26
13. Add multi-zone control function................................................................30
13.1. Application .......................................................................................................................................................... 30
13.2. Zone control........................................................................................................................................................ 32
13.3. Various Zone Options........................................................................................................................................ 36
13.4. Setting the Target Temperature for Zone 1 ................................................................................................. 38
13.5. Setting the Target Temperature for Zone 2.................................................................................................. 40
13.6. Setting temperature for zone control in cooling mode............................................................................. 42
13.7. Zone Control Function Parameters ............................................................................................................... 42
13.8. Parameters .......................................................................................................................................................... 43
14. Muting .........................................................................................................45
15. Curve ........................................................................................................... 45
16. Failure..........................................................................................................46

5
1. Introduction
To ensure high quality and reliability for our customers, this heat pump is manufactured accord-
ing to strict design and production standards. This manual contains all the necessary information
regarding maintenance. Please read this manual carefully before opening or performing mainte-
nance on the device.
The manufacturer of this product is not liable for any injuries or damages that may occur as a result
of improper installation, assembly, or maintenance that is not in accordance with this user manual.
The device must be installed by a qualied installer. The condition for granting warranty
for the device is installation in accordance with Technical and Operation Documentation
guidelines and commissioning of the device by an authorized service partner.
To maintain the warranty, it is essential to always adhere to the provisions of this manual and the
Technical documentation instructions.
– Only a qualied installer or an authorized dealer is permitted to open or repair the device.
– Maintenance and servicing should be carried out according to the recommended schedule and
frequency as provided in this instruction manual.
– Use only original, standard replacement parts.
Failure to comply with these recommendations will result in the warranty being voided.
The air-to-water inverter heat pump is a type of high-eciency, energy-saving, and environmen-
tally friendly device mainly used for heating homes. It can work in conjunction with various heat
emitters such as fan coils, radiators, or underoor heating systems, providing hot water for domes-
tic use as well. One external unit of the monoblock heat pump can also cooperate with multiple
indoor units simultaneously.
The heat pump is designed to provide heat for heating purposes and to produce domestic hot water

6
2. Safety instructions
To protect users and service personnel from injuries, prevent damage to the equipment or other
property, and ensure proper operation of the heat pump, it is essential to carefully read and thor-
oughly understand the information provided in this instruction manual. It is forbidden to use the
device incompatibly with its intended purpose.
Description of the Labeling
Description of Icons
Labeling Meaning
WARNING
Improper actions can lead to death or serious injuries.
CAUTION
Improper operation can lead to injury or health loss.
Icons Meaning
Forbidden. The icon indicates actions that are prohibited or not
allowed.
Mandatory actions. The icon indicates tasks or actions that must be
performed as described
Caution (including Warning). Please pay attention to what is indicated.
Fire Hazard / Flammable Materials.
No Open Flame Allowed.

7
Warning
Operation Meaning
Prohibition
Do not insert ngers or other objects into the fan and evaporator of the
device; otherwise, damage may occur.
Power o
In case of unusual operation or odors, disconnect the power to stop
the device. Continuing operation may result in electrical short-circuits
or re.
Move and Repair Meaning
Suggested
In case of the need for reinstallation or restarting the heat pump, it is
recommended to have it done by qualied personnel. Improper instal-
lation may lead to water leaks, electric shock, injuries, or re.
Suggested
Self-repair of the device is prohibited; otherwise, it may result in
electric shock or re.
Prohibition
When the heat pump requires repair, it must be performed by qualied
personnel. Improper handling or repair of the device may result in
water leakage, electric shock, injuries, or re.
Do not use any defrosting or cleaning agents other than those recom-
mended by the manufacturer.
The device should be stored in a room and installed in an environment
without a constant or potential source of ignition (e.g., open ame,
operating gas appliance, operating electric heater, electrical sparks,
or hot objects).

8
Caution
Installation Meaning
Installation Location
The device must not be installed near ammable gas. In case of a gas
leak, it may cause a re.
Repair of the device
Ensure that the heat pump substructure is strong enough to prevent
tipping or device falling.
You need a switch
Ensure that the device is equipped with an automatic power switch;
the absence of the switch may lead to electric shock or re.
Icons Meaning
Check the foundation
structure.
We kindly request regular inspection of the installation substructure
(once a month) to avoid tipping or damaging the substructure, which
may cause harm to people or the equipment.
Power o
Turn o the power during cleaning or maintenance.
Prohibition
Using copper or steel inserts as fuse is prohibited. A proper fuse must
be installed by authorized electricians.
Prohibition
Spraying ammable gas on the heat pump is prohibited, as it may
cause a re.
3. Features of the device
• Plate heat exchanger: An ecient SWEP heat exchanger with small dimensions and high
eciency is used.
• The device is delivered ready for operation and is lled with the refrigerant R290.

9
4. Functions
This series of heat pumps has the following features:
4.1. Advanced control
The microcomputer-based controller allows users to view and adjust the heat pump’s operating
parameters. Possibility to control the cascade system through an external additional controller.
4.2. Modern design
The heat pump has been meticulously designed with attention to aesthetic appearance, ergonom-
ics, and user-friendly operation.
4.3. Easy installation.
The unit features an ergonomic design with compact casing and is easy to install outdoors.
4.4. Quiet operation
The heat pump unit utilizes a specially designed fan to minimize noise emissions.
4.5. High heat exchange coecient.
The heat pump unit utilizes a specially designed heat exchanger to enhance overall eciency.
4.6. Wide operating range.
This series of heat pumps is designed to operate in various temperature conditions.
• A new generation of environmentally friendly refrigerant R290 has been used, which is
harmless to the ozone layer.
• Heating in low outdoor temperatures: With a well-optimized installation, the device is
designed to perform optimal heating even in low temperatures.
• To ensure full heat demand coverage and ensure energy security for the building in
case of device failure, the installation of a backup heat source in the form of an electric
heater with power specied in Installation manual is required. This is a necessary
condition to maintain the warranty.
• The KHY series heat pumps come equipped with a factory-installed communication module
(DTU). The module is used to read device operating parameters, enabling the manufacturer
to improve their product, enhance customer satisfaction, and achieve maximum device
eciency in specic climates. The module does not record any sensitive data, such as
detailed locations. The data collected by the module is stored by an external entity.
Klima-Therm does not gather data obtained by the DTU module. Additionally, Klima-Therm
does not provide any application for remote control of the device using the DTU module, and
thus, it assumes no responsibility for customers creating accounts in applications provided by
external entities, their operations, or data collection.
The use of applications that support the DTU module is at the user’s own risk, and
Klima-Therm disclaims any responsibility for such actions.
• Klima-Therm does not provide any technical support for applications from external providers
that support the DTU module.
The refrigerant R290 is ammable and explosive. It is prohibited to install it in
environment where there are operating or potential sources of ignition

10
6. Inspection
6.1. Preparation for Inspection and Maintenance
• Perform tasks only when you are competent and have knowledge of the special properties and
hazards associated with refrigerant R290.
• The product contains ammable refrigerant R290. In the event of a leak, the released refriger
ant may mix with air, creating a ammable atmosphere.
• There is a risk of re and explosion.
• Ensure that the space around the device is adequately ventilated
• Before engaging in inspection, maintenance, or replacement of parts, adhere to safety principles
• Disconnect the device from power and ensure that the product is correctly grounded.
5. Maintenance
Periodic maintenance (every 12 months).
To ensure proper operation of the device and maintain the warranty, arrange inspection by an
authorized Service Partner before 12 months of commissioning.
Before the initial device startup or after a prolonged pause, the following preparations should
be performed
1. Thoroughly inspect and clean the device
2. Clean the water system – mesh lter.
3. Check the water pump, regulating valve, and other water system components
4. Tighten all pipe connections
Do not change system parameters before consulting with engineer
Ensure that the water supply and drainage device is functioning correctly; otherwise, the
eciency and reliability of the device may be compromised.
Ensure that water installations are clean and avoid dirt and blockages.
Check the current, water, and replace faulty parts at appropriate intervals.
Please use parts supplied or recommended by the manufacturer; do not use non-original parts.
If you need to replenish refrigerant due to a leak, contact the service or the sellers.
Zagrożenie!
Risk of death due to re or explosion in case of refrigerant leakage!

11
7. Accessories.
7.1. Accessories included with the unit.
6.2. Product Cleaning
• Do not clean the product with a high-pressure washer or direct water stream
• Clean the product with water and a cleaning agent
• Do not use abrasive cleaning agents. Do not use solvents. Do not use cleaning agents
containing chlorine or ammonia.
• Check for dirt between the ns of the heat exchanger or if settlements cling to lamellae
• Clean the lamellae using a soft brush, avoiding bending the exchanger ns
• Check if dirt has accumulated in the condensate drip tray or in the drain pipe
• Check if water is not pooling in the tray and can ow freely
Components
Names of Elements Symbol Quantity
User Manual 1
Vibration dampers 4
Screws 4
Signal cable 1
Wired control panel 1
Temperature sensor 1
Condensate drain 1
Energy labeling 1

12
8. Precautions
8.1. Before Installation
Check the model name and serial number of the unit. It is required to read the installation manual
and technical documentation.
8.2. Handling and Transportation
Due to the relatively large dimensions and weight of the unit, it can only be moved using lifting
equipment with slings. The slings can be mounted on sleeves on the base frame arms specically
designed for handling.
9. Operation and Inspection
9.1. Display Interface Description
9.1.1. Mode Selection Interface
Caution
To avoid damage, do not touch the air inlet or the aluminum exchanger ns of the unit
Do not use clamps on the ventilation grilles to avoid damaging the units
The unit is heavy! Prevent the device from falling due to improper tilting during transportation

13
Marking Key Functions
Power On/O Button: When the button is displayed in blue, it indicates
the power-on state. Upon touching, it will change color to white and
switch to the power-o state
Screen Lock Button: You can perform various operations on the display
when the lock is open, but you cannot operate the display when the lock
is closed. After locking the screen, press the screen lock button and
enter the password ‘22’ to unlock the screen
It displays the current date, time, and day of the week
Ambient Temperature: Display the current ambient temperature
Timer On/O Function Icon:
This icon will be displayed when the timer on/o function is activated
Timer Mute Function Icon:
This icon will be displayed when the timer mute function is activated
Enter Defrost Icon:
This icon will be displayed when the unit enters the defrosting function
Fault Icon: This icon will be displayed in case of a device malfunction
Operating Mode Icon indicates that the device is currently operating
in the heating + hot water mode. There are ve available modes: heat-
ing, cooling, hot water, hot water + cooling, hot water + heating
Operating Mode Icon indicating that the device is currently operating
in the heating mode

14
Marking Key Functions
Operating Mode Icon indicating that the device is currently operating
in the cooling mode.
Operating Mode Icon indicating that the device is currently operating
in the cooling + hot water mode.
Operating Mode Icon indicating that the device is currently operating
in the hot water mode.
Mode Mode Selection Button: Upon touching the button, the device will
enter the mode selection interface, allowing you to set the mode.
45.5°C The target temperature refers to the desired temperature value
corresponding to the current mode.
Target
Target Temperature Setting Button: Upon touching the button, the
device will enter the target temperature setting interface, allowing you
to set the target temperature for the current mode.
24.5°C The outlet water temperature, which refers to the current temperature
of the water exiting the device.
DHW 35.7°C The tank temperature, which refers to the current temperature of the
water in the hot water tank
The main interface icon, indicating that the current page is the main
interface. Swipe left to enter the ‘Function Settings Interface’; Swipe
right to enter the ‘Main Status Interface’.

15
Marking Key functions
DHW+Heang
Mode selection element, which will be highlighted after se-
lection, indicating that the currently set mode is domestic hot
water (DHW)+heating.
Heang Mode selection position, which will be highlighted after selec-
tion, indicating that the currently set mode is heating
Cooling Mode selection position, which will be highlighted after selec-
tion, indicating that the currently set mode is cooling
DHW+Cooling Mode selection position, which will be highlighted after selec-
tion, indicating that the currently set mode is DHW+cooling.
DHW Mode selection position, which will be highlighted after selec-
tion, indicating that the currently set mode is hot water.
Conrmation button, which can be pressed to save the select-
ed content.
Back button, which can be pressed to return to the main inter-
face without saving the selected content
9.1.2. Mode Selection Interface

16
Mode selection operation:
Click the “Mode selection button” on the main interface to enter the “Mode selection interface,”
and then slide the “Mode selection element” to highlight the selected mode. Press the “Conrm”
button to save and conrm, thus completing the mode selection operation. If you press the “Back”
button, the system will return to the main interface without saving the settings.
9.1.3. Function settings interface
In the main interface, swipe left to access the “Function settings interface.”
Marking Key functions
Time function button: Tap to access the “Time function settings
interface,” where you can set the system time, congure the timer on/
o, and enable the timer mute function (H22=1).
Function settings button: You must enter a password to access the
relevant function settings interface.
Curve function button: Allows recording temperature changes from
the last hours of operation.

17
Marking Key functions
System brightness button: Allows adjusting the display brightness.
Error display function button: Enables displaying information about
faults or errors.
Quick heating function button: This button allows for rapid heating
with a single touch. The icon is displayed only when R35≠0.
Programmer for mode, temperature, and Smart Grid power: This fea-
ture allows you to set schedules for dierent modes, desired tempera-
tures, and power levels based on the Smart Grid signal.
9.1.4. Interface for customer function
In the “Function Settings Interface,” tap the “Parameter” The “Password Input Interface” will ap-
pear. Enter the password “22” and press the “Conrmation Button” to access the “Factory Setting
Interface”.

18
Marking Key functions
Customer Parameter Button: Tap to enter the “Customer Parameter
Interface,” which displays the parameters that can be congured.
Manual Defrost Button: Tap to enter the manual defrost function.
Ambient Temperature Compensation Curve Setting Button: Tap to
enter the ambient temperature compensation curve setting interface.
Unit Status Button: Tap to enter the “Device Status Interface,” where
the operational states (on/o) of individual installation components
are visible.
Unit Information Button: Tap to enter the “About Interface,” where you
can view essential information about the device and software.
Return Button: Tap to go back to the “Function Settings Interface.”
9.1.5. Time Function Settings Interface
In the “Function Settings Interface,” touch the “Time Function Button” to enter the “Time Function
Settings Interface.” Here, you can set the system time, congure the timer switch, and enable the
timer mute function and congure hot water circulation pump, if it has been connected.

19
Marking Key functions
System Time Setting Button: Allows you to set the system time.
Mute Timer Button: When the device has a mute function, this button
allows you to enable time-based control for that function.
Power On/O Timer Button: This button enables time-based control
for turning the device’s power on/o.
Warm Water Cir. Control. This function allows you to con-
gure the operation of the circulation pump (if connected)
10. The functions of the Domestic Hot Water (DHW)
Depending on the connections made to the following pins on the main board, it is possible to
control additional components such as the circulation pump for hot water. In the system parame-
ters, parameter H40 should be congured according to the following assumptions.
0 – hot water pump
1 – the circulation pump for hot water.
2 – O signal during defrosting.

20
0 – Charging pump for domestic hot water tank. Pump used in the case of an additional heat ex-
changer between the unit and the DHW tank, separating the circuits.
1– Circulation pump for domestic hot water - After turning on the tap with hot water in the bath-
room or kitchen sink, the user expects immediate delivery of hot water. The circulation pump main-
tains the ow of hot water throughout the water installation, making it instantly available at all taps.
If the user requires continuous access to hot water, option 1 can be selected and this pump can be
connected to the heat pump.
There are a total of 3 available time settings, and the operational logic and interface are identical
to the on/o timer.
ON:
After setting the desired time, the signal from the hot water circulation pump port will be transmit-
ted to the hot water circulation pump.
Screenshot
2– O signal during defrosting - in winter, some users wish to turn o the water pump from the
buer tank so that only the heat from the buer tank is used for defrosting.