Kaysun KHPA2 300S Operating instructions

Thank you very much for purchasing our product.
Before using your unit, please read this manual carefully and keep it for future reference.
INSTALLATION, TECHNICAL &
OWNER'S MANUAL
Domestic Hot Water Heat Pumps
COMPAK
KHPA2 190S KHPA2 300S

1Safety considerations 4
2Introduction 12
3Before installation 20
4Handling 21
5Selecting the installation site 23
6Water connections 26
7Aeraulic connections 32
8Electrical connections 37
9Start-up 41
10 Control 47
11 Maintenance 60
12 Residual risks / Decommissioning 65
13 Technical data 69
14 Elfocontrol3 EVO 78
15 Modbus Protocol 79
INSTALLER use
Pay particular attention to:
USER use

The precautions in this manual are divided as
indicated on the side.
They are important, so make sure you follow
them closely.
Please read these instructions carefully before
installing.
Keep this manual handy for future reference.
This unit contains fluorinated gases. For specific
information on gas types and quantities, please
refer to the plate found on the unit.
Please contact your dealer for future assistance.
User
CAUTION
⇒ 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.
 Before cleaning, be sure to stop the operation
and turn the breaker off or pull out the power
plug.
 Otherwise, an electric shock and injury may be
caused.
DANGER
⇒ Do not insert fingers, rods or other objects
into the air inlet or outlet.
⇒ When the fan is rotating at high speed, it will
cause injury.
⇒ Do not touch the inner parts of the controller.
⇒ Do not remove the front panel. Some parts
inside are dangerous to touch, otherwise a
machine malfunction may be caused.
Meaning of the symbols DANGER,
WARNING, CAUTION and NOTE
DANGER
 It indicates a situation of imminent
danger that, if not avoided, will
cause serious lesions.
WARNING
 It indicates a potentially dangerous
situation that, if not avoided, may
cause serious lesions.
CAUTION
 It indicates a potentially dangerous
situation that, if not avoided, may
cause slight or moderate injury.
Also used to warn against unsafe
practices.
NOTE
 It indicates situation that may
cause accidental damage to the
equipment or property.
1SAFETY CONSIDERATIONS

 Never use a flammable spray such as hair
spray, lacquer paint near the unit, it may
cause a fire.
 Do not remove, cover or deface any
permanent instructions, lables, or the data
label from either the outside of the unit or
inside of unit panels.
 It is forbidden the use of the device to
children and unassisted disables .
 It is forbidden to touch the device if you are
barefoot and with wet body parts .
 It is forbidden any cleaning, before having
disconnected the device positioning the system
main switch on “off”.
 It is forbidden to pull, remove, twist the
electric cables that come out from the device
even if it is disconnected from the mains
supply.
 It is forbidden to trample on the device and/
or to put on it any type of object.
 It is forbidden to throw or spray water directly
on the device.
 It is forbidden to insert sharpened objects by
the air return and supply grilles.
 It is vorbidden to open the lids of access to
the internal device parts, without having before
positioned the main switch of the system on
“off”.
⇒ Do not turn off the power supply.
WARNING
⇒ If the supply cord is damaged, it must be
replaced by the manufacturer or its service
agent or a similarly qualified person.
⇒ The wiring must be performed by professional
technicians in accordance with national wiring
regulations.
 A disconnect device for all poles having a
separation distance of at least 3 mm across
all poles and that a residual current device
(RCD) with a power greater than 10mA is
incorporated into fixed wiring.
1SAFETY CONSIDERATIONS

 System will stop or restart heating
automatically. A continuous power supply for
water heating is necessary, except service and
maintenance.
 Keep this manual with the wiring diagram in an
accessible place for the operator.
 Children should be supervised to ensure that
they do not play with the unit.
 Note the unit lable data so you can provide
them at the assistance centre in case of
intervention (see "Unit identification" section)
 Provide a unit notebook that allows any
interventions carried out on the unit to be
noted and tracked making it easier to suitably
note the various interventions and aids the
search for any breakdowns.
Water temperature over 50°C can cause severe
burns instantly.
Children, disabled and elderly are at highest
risk of being scalded.
Feel water before bathing or showering.
Water temperature limiting valves are
recommended.
Ask qualified person for relocating, repairing
and maintaining the unit instead of doing by
yourself.
In case of breakdown or malfunction:
immediately deactivate the unit
contact a constructor certified assistance service.
use original spares parts only.
Ask the installer to be trained on:
start-up / shutdown
set points change
standby mode
maintenance
what to do / what not to do in case of breakdown
1SAFETY CONSIDERATIONS

General instructions
Preliminaries
Read carefully the IOM and use the unit strictly
according to the instructions in order to avoid
personal injuries, damages to the unit, damages
to property and litigations.
Our company does not assume any legal liability
for any damage caused by improper use of the
unit.
The positioning, hydraulic system, refrigerating,
electrics and the air duct must be determined by
the system designer or by experts and must take
into consideration both the decidedly technical
requirements as well as any local regulations in
act regarding specific authorisations.
Only qualified personnel can operate on the unit,
as required by the regulation in force.
Using the unit in case of breakdown or
malfunction :
voids the warranty
may compromise the safety of the unit
may increase time and repair costs.
Follow local safety regulations.
Keep packing material out of children’s reach it
may be dangerous.
Recycle and dispose of packing material in
conformity with local regulations.
Risk situations
The unit has been designed and created to
prevent injures to people. During designing it is
not possible to plane and operate on all risk
situation. Read carefully "Residual risk" section
where all situation which may cause damages to
things and injuries to people are reported.
Installation, starting, maintenance and repair
required specific knowledge; if they are carried
out by inexperienced personnel, they may cause
damages to things and injuries people.
Intended use
Use the unit only: domestic hot water heating,
within limits defined in the technical bulletin and
on this manual.
1SAFETY CONSIDERATIONS

Any use other than intended does not involve
the manufacturer in any commitment or
obligation.
Hydraulic system
Components
Selection and installation of system components
must be carry out by installer.
Water quality
The water quality is determined by the following
factors, avoid therefore:
Inorganic salts
pH
Biological load (seaweeds etc)
Suspended solids
Dissolved oxygen
Water with inadequate characteristics can cause:
pressure drop increase
energy efficiency decrease
corrosive symptom increase
Risk of freeze
If the unit or the relative water connections can
be subject to temperatures close to 0°C adopt
measures for prevent risk of freeze.
The appliance is intended to be permanently
connected to the water mains and not connected
by a hose-set .
The water may drip from the discharge pipe of
the pressure-relief device and that this pipe must
be left open to the atmosphere.
The pressure-relief device is to be operated
regularly to remove lime deposits and to verify
that is not blocked.
A discharge pipe connected to the pressure-relief
device is to be installed in a continuously
downward direction and in a frost-free
environment.
1SAFETY CONSIDERATIONS

Electric system
The characteristics of the electrical lines must be
determined by specialized personnel able to
design electrical installations; moreover, the lines
must be in conformity with regulations in force.
Operate in compliance with safety regulations in
force .
This unit is required reliable earthing before
usage, otherwise might cause injury.
If you can't make sure that your house power
supply is earthed well, please don't install the
unit if it does not in conformity with regulations
in force.
The power supply should be an independent
circuit with rated voltage.
Power supply circuit should be earthed effectively.
Do not use water pipes to earthing connection of
the unit
Use single protection devices : gloves, glasses
ecc.
The power cables and the protection cable
section must be defined in accordance with the
characteristics of the protections adopted. The
serial number label reports the unit specific
electrical data, included any electrical
accessories.
Connection
All electrical operations should be performed by
trained personnel having the necessary
requirements by the regulations in force and
being informed about the risks relevant to these
activities. Refer to the unit electrical diagram (the
number of the diagram is shown on the serial
number label). Verify that the network has
characteristics conforming to the data shown on
the serial number label .
Make sure that the unit supply line is selected at
start.
Shelter the cables using adequate measure
fairleads.
This unit is required reliable earthing
before usage, otherwise might
cause injury.
1SAFETY CONSIDERATIONS

Before starting work, verify that the sectioning
device at the start of the unit power line is
open, blocked and equipped with sign warning.
First create the earthing connection.
After wire connection, check it again and make
sure the correctness before power on.
Prior to powering the unit ensure that all the
protections that were removed during the
electrical connection work have been restored.
Signal lines/data-lay
Do not overpass the maximum power allowed,
which varies, according to the type of signal.
Lay the cables far from power cables or cables
having a different voltage and that are able to
emit electromagnetic disturbances. Do not lay the
cable near devices which can generate
electromagnetic interferences.
Do not lay the cables parallel to other cables;
cable crossings are possible, only if laid at 90°.
Connect the screen to the ground, only if there
aren’t disturbances .
Guarantee the continuity of the screen for the
entire extension of the cable.
Respect impendency, capacity and attenuation
indications.
Modification
All unit modifications will end the warranty
coverage and the manufacturer responsibility.
Breakdown/Malfuction
Disable the unit immediately in case of
breakdown or malfunction.
Contact a constructor certified assistance service.
Use original spares parts only.
User training
The installer has to train the user on :
ON / OFF
set points change;
1SAFETY CONSIDERATIONS