Daikin EKHH2E-AV3 User manual

Service
Manual
Installation and user manual
Domestic Hot Water Heat Pump
Monobloc type
English
Language
Language
Language
Language
Language
Installation and user manual
Domestic Hot Water Heat Pump - Monobloc type
EKHH2E200AAV3
EKHH2E260AAV3
EKHH2E260PAAV3
EKHH2E200BAV33

Page 2
Installation and user manual
LIST OF CONTENTS
1General safety precautions ........................................... 3
1.1 About the documentation..................................................3
1.1.1 Meaning of warnings and symbols.............3
1.2 Fortheuser........................................................................3
1.3 Fortheinstaller...................................................................4
1.3.1 General......................................................4
1.3.2 Installation site ...........................................4
1.3.3 Refrigerant.................................................4
1.3.4 Water .........................................................5
1.3.5 Electrical ....................................................5
1.4 Glossary..............................................................................7
2Introduction .................................................................... 8
2.1 Products..............................................................................8
2.2 Disclaimer...........................................................................8
2.3 Copyright............................................................................8
2.4 Operatingprinciple.............................................................8
2.5 Availableversionsandconfigurations..............................9
3Handling and transport.................................................. 9
4Construction characteristics....................................... 11
4.1Technicalcharacteristics.................................................12
5Important information.................................................. 14
5.1 Conformity withEuropeanregulations...........................14
5.2 Degreesofprotectionprovidedbyenclosures..............14
5.3 Limitationsofuse.............................................................14
5.4 Operatinglimits................................................................14
5.5 Fundamentalsafetyrules................................................14
5.6 Informationoncoolantused............................................14
6Installation and connections....................................... 14
6.1 Preparationoftheinstallationsite...................................15
6.1.1 Securing to the floor.................................15
6.2 Ventilationconnection.....................................................15
6.2.1 Particular installation conditions............... 17
6.3 Devicemountingandconnection...................................18
6.4 Watersupplyconnections...............................................18
6.4.1 Condense drain connections ...................20
6.5 Solarpowersystemintegration......................................20
6.6 Electricalconnections......................................................21
6.6.1 Remote links ............................................21
6.7 Wiringdiagram.................................................................22
7Commissioning ............................................................ 23
8Operation and use........................................................ 23
8.1 TheUser Interface...........................................................23
8.1.1 Interface keys and display .......................23
8.1.2 Operating logic.........................................24
8.1.3 Basic management ..................................25
8.2 Particularoperations........................................................30
8.2.1 List of equipment parameters ..................31
9Maintenance and cleaning........................................... 35
9.1 Resettingofsafety equipment........................................35
9.2 Quarterlyinspections.......................................................35
9.3 Annualinspections...........................................................35
9.4 Cleaningoftheventilation filter.......................................36
9.5 Magnesiumanodes.........................................................36
9.6 Emptyingtheboiler..........................................................36
9.7 Inspectionoftheelectricalresistancecompartment.... 37
10 Troubleshooting........................................................... 38
11 Disposal ........................................................................ 38
12 Product fiche ................................................................ 39

Installation and user manual
Page 3
1 General safety
precautions
1.1 About the documentation
•The original documentation is written in English. All
other languages are translations.
•The precautions described in this document cover
very important topics, follow them carefully.
•The installation of the system, and all activities
described in the installation manual must be
performed by an authorized installer.
1.1.1 Meaning of warnings and
symbols
DANGER
Indicates a situation that results in death or
serious injury.
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in
electrocution.
DANGER: RISK OF BURNING
Indicates a situation that could result in burning
because of extreme hot or cold temperatures.
DANGER: RISK OF EXPLOSION
Indicates a situation that could result in
explosion.
WARNING
Indicates a situation that could result in death
or serious injury.
WARNING: FLAMMABLE MATERIAL
CAUTION
Indicates a situation that could result in minor
or moderate injury.
NOTICE
Indicates a situation that could result in
equipment or property damage.
INFORMATION
Indicates useful tips or additional information.
Symbol
Explanation
Before installation, read the installation
and operation manual, and the wiring
instruction sheet.
Before performing maintenance and
service tasks, read the service manual.
For more information, see the installer
and user reference guide.
1.2 For the user
•If you are not sure how to operate the unit, contact
yourinstaller.
•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.
WARNING
To prevent electric shocks or fire:
•Do NOT rinse the unit.
•Do NOT operate the unit with wet hands.
•Do NOT place any objects containing
water on the unit..
NOTICE
•Do NOT place any objects or equipment
on top of the unit.
•Do NOT sit, climb or stand on the unit.
•Units are marked with the following symbol:
This means that electrical and electronic products may
not be mixed with unsorted household waste. Do NOT
try to dismantle the system yourself: the dismantling of
the system, treatment of the refrigerant, of oil and of
other parts must be done by an authorized installer
and must comply with applicable legislation.
Units must be treated at a specialized treatment
facility for reuse, recycling and recovery. By ensuring
this product is disposed of correctly, you will help to
prevent potential negative consequences for the
environment and human health. For more
information, contact your installer or local authority.

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Installation and user manual
1.3 For the installer
1.3.1 General
If you are not sure how to install or operate the unit,
contact your dealer.
NOTICE
Improper installation or attachment of
equipment or accessories could result in
electric shock, short-circuit, leaks, fire or other
damage to the equipment. Only use
accessories, optional equipment and spare
parts made or approved by Daikin.
WARNING
Make sure installation, testing and applied materials
comply with applicable legislation (on top of the
instructions described in the Daikin documentation).
CAUTION
Wear adequate personal protective equipment
(protective gloves, safety glasses,…) when
installing, maintaining or servicing the system.
DANGER: RISK OF BURNING
•Do NOT touch the refrigerant piping,
water piping or internal parts during and
immediately after operation. It could be
too hot or too cold. Give it time to return
to normal temperature. If you must touch
it, wear protectivegloves.
•Do NOT touch any accidental leaking
refrigerant.
WARNING
Provide adequate measures to prevent that the unit
can be used as a shelter by small animals. Small
animals that make contact with electrical parts can
cause malfunctions, smoke or fire.
CAUTION
Do NOT touch the air inlet or aluminium fins
of the unit.
NOTICE
•Do NOT place any objects or equipment
on top of the unit.
•Do NOT sit, climb or stand on the unit.
NOTICE
Works executed on the outdoor unit are best
done under dry weather conditions to avoid
water ingress.
In accordance with the applicable legislation, it might be
necessary to provide a logbook with the product
containing at least: information on maintenance, repair
work, results of tests, stand-by periods,…
Also, at least, following information must be provided at
an accessible place at the product:
•Instructions for shutting down the system in case
of an emergency
•Name and address of fire department, police and
hospital
•Name, address and day and night telephone
numbers for obtaining service
In Europe, EN378 provides the necessary guidance for
this logbook.
1.3.2 Installation site
•Provide sufficient space around the unit for
servicing and air circulation.
•Make sure the installation site withstands the unit's
weight and vibration.
•Make sure the area is well ventilated. Do NOT
block any ventilation openings.
•Make sure the unit is level.
Do NOT install the unit in the following places:
•In potentially explosive atmospheres.
•In places where there is machinery that emits
electromagnetic waves. Electromagnetic waves
may disturb the control system, and cause
malfunction of the equipment.
•In places where there is a risk of fire due to the
leakage of flammable gases (example: thinner or
gasoline), carbon fibre, ignitable dust.
•In places where corrosive gas (example:
sulphurous acid gas) is produced. Corrosion of
copper pipes or soldered parts may cause the
refrigerant to leak.
1.3.3 Refrigerant
If applicable. See the installation manual of your
application for more information.
WARNING
During tests, NEVER pressurize the product
with a pressure higher than the maximum
allowable pressure (as indicated on the
nameplate of the unit).
WARNING
Take sufficient precautions in case of
refrigerant leakage. If refrigerant gas leaks,
ventilate the area immediately. Possible risks:
• Excessive refrigerant concentrations in a
closed room can lead to oxygen deficiency.

Installation and user manual
Page 5
•Toxic gas may be produced if refrigerant
gas comes into contact with fire.
DANGER: RISK OF EXPLOSION
Pump down –Refrigerant leakage. If you
want to pump down the system, and there is a
leakage in the refrigerant circuit:
•Do NOT use the unit's automatic pump
down function, with which you can collect
all refrigerant from the system into the
outdoor unit. Possible consequence:
Self-combustion and explosion of the
compressor because of air going into the
operating compressor.
•Use a separate recovery system so that
the unit's compressor does NOT have to
operate.
WARNING
Always recover the refrigerant. Do NOT
release them directly into the environment.
Use a vacuum pump to evacuate the
installation.
NOTICE
•To avoid compressor breakdown, do
NOT charge more than the specified
amount of refrigerant.
•When the refrigerant system is to be
opened, refrigerant must be treated
according to the applicable legislation.
WARNING
Make sure there is no oxygen in the system.
Refrigerant may only be charged after
performing the leak test and the vacuum drying.
•In case re-charge is required, refer to the
nameplate of the unit. It states the type of
refrigerant and necessary amount.
•The unit is factory charged with refrigerant and
depending on pipe sizes and pipe lengths some
systems require additional charging of refrigerant.
•Only use tools exclusively for the refrigerant type
used in the system, this to ensure pressure
resistance and prevent foreign materials from
entering into the system.
•Charge the liquid refrigerant as follows:
If
Then
A siphon tube is present
(i.e., the cylinder is marked
with "Liquid filling siphon
attached")
Charge with the cylinder
upright.
A siphon tube is NOT
present
Charge with the cylinder
upside down.
•Open refrigerant cylinders slowly.
•Charge the refrigerant in liquid form. Adding it in
gas form may prevent normal operation.
CAUTION
When the refrigerant charging procedure is
done or when pausing, close the valve of the
refrigerant tank immediately. If the valve is not
closed immediately, remaining pressure might
charge additional refrigerant. Possible
consequence: Incorrect refrigerant amount.
1.3.4 Water
If applicable. See the installation manual of your
application for more information.
NOTICE
Make sure water quality complies with EU
directive 98/83 EC.
1.3.5 Electrical
DANGER: RISK OF ELECTROCUTION
•Turn OFF all power supply before
removing the switch box cover,
connecting electrical wiring or touching
electrical parts.
•Disconnect the power supply for more
than 1 minute, and measure the voltage
at the terminals of main circuit capacitors
or electrical components before
servicing. The voltage MUST be less
than 50 V DC before you can touch
electrical components. For the location of
the terminals, see the wiring diagram.
•Do NOT touch electrical components
with wet hands.
•Do NOT leave the unit unattended when
the service cover is removed.

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Installation and user manual
WARNING
If NOT factory installed, a main switch or other
means for disconnection, having a contact
separation in all poles providing full
disconnection under overvoltage category III
condition, shall be installed in the fixed wiring.
WARNING
•ONLY use copper wires.
•Make sure the field wiring complies with
the applicable legislation.
•All field wiring must be performed in
accordance with the wiring diagram
supplied with the product.
•NEVER squeeze bundled cables and make
sure they do not come in contact with the
piping and sharp edges. Make sure no
external pressure is applied to the terminal
connections.
•Make sure to install earth wiring. Do NOT
earth the unit to a utility pipe, surge
absorber, or telephone earth. Incomplete
earth may cause electrical shock.
•Make sure to use a dedicated power
circuit. NEVER use a power supply shared
by another appliance.
•Make sure to install the required fuses or
circuit breakers;
•Make sure to install an earth leakage
protector. Failure to do so may cause
electric shock or fire.
•When installing the earth leakage
protector, make sure it is compatible with
the inverter (resistant to high frequency
electric noise) to avoid unnecessary
opening of the earth leakage protector.
NOTICE
Precautions when laying power wiring:
• Do not connect wiring of different thicknesses
to the power terminal block (slack in the power
wiring may cause abnormal heat).
•When connecting wiring which is the same
thickness, do as shown in the figure below.
•For wiring, use the designated power wire
and connect firmly, then secure to prevent
outside pressure being exerted on the
terminal board.
•Use an appropriate screwdriver for
tightening the terminal screws.
A screwdriver with a small head will
damage the head and make proper
tightening impossible.
•Over-tightening the terminal screws may
break them.
Install power cables at least 1 metre away from
televisions or radios to prevent interference. Depending
on the radio waves, a distance of 1 metre may not be
sufficient.
WARNING
•After finishing the electrical work, confirm
that each electrical component and
terminal inside the electrical components
box is connected securely.
•Make sure all covers are closed before
starting up the unit.

Installation and user manual
Page 7
1.4 Glossary
DealerSales distributor for the product.
Authorized installer
Technical skilled person who is qualified to
install the product.
User Person who is owner of the product and/or
operates the product.
Applicable legislation
All international, European, national and local
directives, laws, regulations and/or codes that
are relevant and applicable for a certain product
or domain.
Service company
Qualified company which can perform or
coordinate the required service to the product.
Installation manual
Instruction manual specified for a certain product
or application, explaining how to install,
configure and maintain it.
Operation manual
Instruction manual specified for a certain product
or application, explaining how to operate it.
Accessories
Labels, manuals, information sheets and
equipment that are delivered with the product
and that need to be installed according to the
instructions in the accompanying documentation.
Optional equipment
Equipment made or approved by Daikin that can
be combined with the product according to the
instructions in the accompanying documentation.
Field supply
Equipment not made by Daikin that can be
combined with the product according to the
instructions in the accompanying documentation.

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Installation and user manual
2 Introduction
This installation and maintenance manual is to be
considered an integral part of the present heat pump
(hereafter referred to as equipment).
The manual must be kept for future reference until the
heat pump itself has been dismantled. This manual is
intended for both the specialised installer (installers –
maintenance technicians) as well as the end user.
The installation modes to be complied with in order to
achieve a correct and safe operation of the equipment
as well as methods of use and maintenance are
described in this manual.
In case of the sale of the equipment or the change of
owner, the manual must accompany the equipment to
its new destination.
Before installing and/or using the equipment, read this
instruction manual carefully and, in particular, chapter 5
relating to safety.
The manual must be kept together with the equipment
and, in any case, it must always be at the disposal of
the qualified personnel in charge of installation and
maintenance.
The following symbols are used inside the manual in
order to rapidly find the most important information:
Information on safety
Procedures to follow
Information/ Suggestions
2.1 Products
Dear Customer,
Thank you for having purchased this product.
Our company has always paid a great deal of attention
to environmental problems, therefore, it has used
technologies and materials with a low environmental
impact to manufacture its products in conformity with
RAEE 2012/19/UE and RoHS 2011/65/UE community
standards.
2.2 Disclaimer
The conformity of the content of these user instructions
with hardware and software has been submitted to
thorough verification. Regardless of this, it is still
possible for some non-compliances to occur; therefore,
no liability will be assumed for complete conformity.
In the interest of achieving technical perfection, we
reserve the right to carry out modifications to the
equipment construction or to data at any time
whatsoever. Therefore we do not accept any liability
claims whatsoever attributable to instructions, figures,
drawings or descriptions, without prejudice to errors of
any kind.
The Supplier shall not be held responsible for damages
attributable to misuse, improper use, or as a
consequence of unauthorised repairs or modifications.
WARNING!
The equipment can be used by children of at
least 8 years of age as well as by people with
reduced physical, sensory or mental abilities
or by those who lack the necessary
experience or knowledge, as long as they are
supervised or after they have received
instructions relating to the safe use of the
equipment as well as explanations relating to
the use of such equipment.
Children must not play with the equipment.
Cleaning and maintenance intended to be
carried out by the user must not be performed
by unsupervised children.
2.3 Copyright
These user instructions contain information protected
by copyright. It is forbidden to photocopy, duplicate,
translate or record these user instructions on memory
equipment, either in whole or in part without prior
authorisation of Daikin. Any breaches shall be subject
to the payment of compensation for any damage
caused. All rights are reserved, including those deriving
from the issuing of patents or the registration of utility
models.
2.4 Operating principle
The equipment belonging to the 1.9 kW and 2.9 kW
series is capable of producing domestic hot water
mainly by using heat pump technology. A heat pump is
capable of transferring thermal energy from a low
temperature source to another with a higher
temperature and vice versa (heat exchangers).
The equipment uses a water circuit consisting of a
compressor, an evaporator, a condenser and a
lamination valve; a liquid/gas coolant flows inside this
circuit (see paragraph 4.6).
The compressor creates a difference in pressure inside
the circuit that allows a thermodynamic cycle to be
obtained: this sucks the coolant fluid in through an
evaporator, where the fluid itself evaporates at a low
pressure by absorbing heat, it is compressed and
driven towards the condenser where the fluid
condenses at a high pressure releasing the absorbed
heat. After the condenser, the fluid passes through the
so-called “lamination valve”and by losing pressure and
the temperature starts to vaporise, it re-enters the
evaporator and the cycle starts all over again.

Installation and user manual
Page 9
Fig. 1 –Operating principle
The operating principle of the equipment is as follows
(Fig. 1):
I-II: The coolant fluid sucked in by the compressor flows
inside the evaporator and while it evaporates, it absorbs
the “ecological” heat given by the air.
At the same time, the ambient air is sucked in by the
equipment by a fan; the air loses it heat by passing over
the finned-tube battery of the evaporator;
II-III: The coolant gas passes inside the compressor
and it under goes an increase in pressure that causes a
rise in temperature; transforming this into superheated
steam;
III-IV: Inside the condenser, the coolant gas releases its
heat to the water inside the tank (boiler). This exchange
process makes it possible for the coolant to pass from
superheated steam to a liquid state by condensing at a
constant pressure and undergoing a reduction in
temperature;
IV-I: The liquid coolant passes through the lamination
valve, it undergoes a sudden drop in both pressure and
temperature and it partially vaporises bringing pressure
and temperature back to the initial conditions. The
thermodynamic cycle can begin.
2.5 Available versions and
configurations
The heat pump is available, in relation to the thermal
power (1.9 kW version), which can be set up in different
configurations, depending on the possible integrations
with other heating sources (e.g. solar thermal, biomass
power, etc.).
Version
Configuration description
EKHH2E200AAV3
EKHH2E200BAV33
EKHH2E260AAV3
Air source heat pump for
the production of domestic
hot water
EKHH2E260PAAV3
Air source heat pump for
the production of domestic
hot water suitable for use
with the solar power
system.
3 Handling and transport
The equipment is supplied in a cardboard box (*). It is
fastened to a pallet with three screws.
Use a fork-lift truck or a pallet truck in order to unload
the equipment: it is opportune for these to have a load
capacity of at least 250 kg.
In order to make it
easier to loosen the
fixing screws the
packaged equipment
may be put in a
horizontal position on its
back side.
The unpacking
operations must be
carried out carefully so
as not to damage the
equipment enclosure if
this is carried out with
knives or cutters to
open the cardboard
packaging.
After having removed
the packaging, make sure that the unit is intact. If in
doubt, do not use the equipment and seek help from
authorised technical staff.
In conformity with environmental protection regulations,
make sure that all the accessories supplied have been
removed before discarding the packaging.
WARNING!
Packaging items (staples, cardboard boxed,
etc.) must not be left within the reach of
children as they are dangerous.
(*) Note: at Daikin’s discretion, the type of packaging
may be subject to change.
For the entire period in which the equipment remains
idle, waiting to be used, it is opportune to protect it from
atmospheric agents.
Ecological heat
Condenser
Air
Evaporator
Compressor
Lamination
valve
Tank
Cold water
Hot water
Electric heat

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Installation and user manual
Positions permitted for transporting and handling:
WARNING!
During the product handling and installation
stages, it is forbidden to put the upper part of the
device under any kind of stress whatsoever due
to the fact that it is not of a structural nature.
WARNING!
The equipment can be transported horizontally
only during the last km according to what
indicated above (see “Positions permitted for
transporting and handling”) and taking care of
positioning some supports on the lower side of
the boiler in order not to lean against the upper
part, which is not of a structural nature. When
the equipment is transported horizontally, the
display must be oriented toward the upper side.
Positions that are not permitted for transporting and
handling purposes:
√
√

Installation and user manual
Page 11
4 Construction characteristics
1
Heat pump.
2
Control panel.
3
Enclosure in embossed ABS.
4
Steel tank (boiler) enamelled according to UNI
standards (capacity: 200; 260 litres).
5
Upper boiler probe.
6
Lower boiler probe.
7
Coolant recharge.
8
Ambient air recirculation fan.
9
Lamination valve.
10
High-efficiency finned evaporator. The quantity
of fluid put into this is regulated by an
appropriate thermostatic valve.
11
Air inlet (160 mm).
12
Air outlet (160 mm).
13
Hermetically-sealed rotary compressor.
14
Replaceable magnesium anode.
15
(1.5 kW –230 W) Electric heating element
16
Condenser pump discharge line.
17
Condenser return.
18
Replaceable magnesium anode.
19
Hot water outlet connection joint (G 1”).
20
Recirculation fitting (G ¾”).
21
Inlet, coil fitting for solar thermal power system
(G 1”1/4; 1 m2 exchange surface).
22
Condensate drain (G 1/2”).
23
Outlet, coil fitting for solar thermal power
system (G 1”1/4; 1 m2 surface).
24
Cold water inlet connection joint (G 1”).
25
50 mm polyurethane insulation.
26
Automatic resetting safety pressure switch.
29
Air inlet filter.
30
½”G fitting for probe immersion sleeve
1
4
6
11
10
9
2
8
18
25
24
16
14
5
4
15
12
22
19
23
20
21
17
3
29
7
13
26
30

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Installation and user manual
4.1 Technical characteristics
1.9 kW
Descriptions
u.m.
EKHH2E200AAV3
EKHH2E260AAV3
EKHH2E260PAAV3
EKHH2E200BAV33
HP thermal power yield
kW
1.82
Total thermal power
kW
3.4
Heating time (1)
h:min
8:17
10:14
10:14
7:05
Heating time in BOOST mode (1)
h:min
3:58
5:06
5:06
3:02
Thermal losses (2)
W
60
70
71
53
Electrical data
Power supply
V
1/N/230
Frequency
Hz
50
Degree of protection
IPX4
HP maximum absorption
kW
0.53
Average absorption
kW
0.43
Heating element + HP maximum
absorption
kW
2.03
Electric heating element power
kW
1.5
Maximum current in HP
A
2.4
Required overload protections
A
16A T fuse/ 16A automatic switch, characteristic C (to be expected
during installation on power supply systems)
Internal protection
Single safety thermostat with manual reset on a resistive element
Operating conditions
Min.÷ max temperature heat pump
air intake (90% R.H.)
°C
-7÷38
Min. ÷ max temperature installation
site
°C
5÷38
Working temperature
HP Maximum settable temperature -
ECO cycle
°C
56
Maximum settable temperature in an
AUTOMATIC cycle
°C
70
Compressor
Rotary
Compressor protection
Thermal circuit breaker with automatic reset
thermodynamic circuit protection
type
Safety pressure switch with automatic reset
Fan
Centrifugal
Ejection outlet diameter
mm
160
Revolutions per minute
rpm
1650÷2100

Installation and user manual
Page 13
Nominal air capacity
m3/h
350÷500
Max. pressure head available
Pa
120
Motor protection
Internal thermal circuit breaker with automatic reset
Condenser
Wrapped externally, not in contact with water
Coolant
R134a
Load
g
900
900
900
1300
Water storage
Water storage nominal capacity
l
196
252
242
196
Max. quantity of hot water that can
be used Vmax (3)
l
275
342
342
266
Coil for connection to solar thermal
power system
m2
N/A
N/A
1.0 m2
N/A
Cathodic protection
Mg AnodeØ26x400 mm
1 x Mg anodeØ26x250
mm
+
1 x Mg anodeØ26x250
mm
Mg anode Ø26x400 mm
Insulation
50 mm high-density polyurethane foam
Defrosting
Active with Hot Gas valve
Dimensions
mm
H1707xD600x
Dmax650
H2000xD600x
Dmax650
H2000xD600x
Dmax650
H1744xD600x
Dmax650
Transport weight
kg
103
115
132
105
Sound power indoors Lw(A) (4)
dB(A)
53
Automatic anti-Legionnella
disinfection cycle (5)
YES
Maximum working pressure
Bar
7
(1) temperature of incoming air supply 7°C (6°C), temperature of boiler storage environment 20°C, water
heated from 10°C to 55°C, (according to UNI EN 16147-2011 and 2017)
(2) measurements carried out according to UNI EN 12897-2006
(3) measurements carried out according to UNI EN 16147-2011 and 2017
(4) measurements carried out according to EN 12102-2013
(5) automatic activation every 30 days of operation

Page 14
Installation and user manual
5 Important information
5.1 Conformity with European
regulations
The present heat pump is a device intended for
domestic use in conformity with the following European
directives:
•2011/65/UE Directive on the restrictions of use of
certain hazardous substances in electric and
electronic equipment (RoHS);
•Directive 2014/30/UE - Electromagnetic
compatibility (EMC);
•Directive 2014/35/UE –Low Voltage Directive
(LVD)
•Directive 2009/125/CE Ecodesign Requirements.
5.2 Degrees of protection
provided by enclosures
The degree of protection of the equipment is equal to:
IPX4.
5.3 Limitations of use
WARNING!
This device has not been designed, nor is
it intended for use within hazardous
environments (due to the presence
of potentially explosive atmospheres –
according to ATEX standards or with
a requested IP level exceeding that of the
equipment) or in applications that require
(fault-tolerant, fail-safe) safety
characteristics such as in circuit-breaking
systems and/or technologies or in any other
context in which the malfunctioning of an
application could cause death or injury to
people or animals or serious damage could
be caused to objects or the environment.
N.B.
In the event of a product breakdown or fault,
this could cause damage (to people, animals
and goods). It is necessary to arrange for
a separate functional monitoring system
with alarm functions in order to avoid such
damage being caused. Moreover, it is
necessary to arrange for a back-up service in
case of failure!
5.4 Operating limits
The above mentioned device is intended to be used
exclusively for the heating of domestic hot water within
the foreseen limitations of use.
The equipment can only be installed and started up for
the intended use within closed heating systems in
conformity with the EN 12828 standard.
N.B.
Daikin shall not be held responsible under any
circumstances in the event that the equipment
is used for other purposes than for which it has
been designed and as regards any installation
errors or equipment misuse.
WARNING!
It is forbidden to use the device for purposes
other than those intended. Any other use is to
be considered improper and therefore not
allowed.
N.B.
During the design and construction stage of the
systems, current local rules and provisions are
complied with.
5.5 Fundamental safety rules
•The device must be used by adults;
•Do not open or disassemble the device when this
is connected to the power supply;
•Do not touch the device with wet or humid body
parts when barefoot;
•Do not pour or spray the device with water;
•Do not stand, sit and/or rest anything on the
device.
5.6 Information on coolant used
This device contains fluorinated greenhouse gas
included in the Kyoto protocol. Do not discard such gas
into the environment.
Coolant type: HFC-R134a.
N.B.
Maintenance and disposal operations must be
carried out only by qualified personnel.
6 Installation and
connections
WARNING!
Installation, commissioning and maintenance of
the device must be performed by qualified and
authorised personnel. Do not attempt to install
the device yourself.

Installation and user manual
Page 15
6.1 Preparation of the
installation site
The installation of the device must be carried out in a
suitable place in order to allow the normal use and
adjustment operations, together with ordinary and
extraordinary maintenance to be performed.
Therefore it is important to allow for the necessary
working space by referring to the dimensions shown in
Fig. 2.
Fig. 2 –Minimum spaces
Model
X1
X2
X3
Y1
mm
Mm
mm
mm
EKHH2E200AAV3
EKHH2E200BAV33
EKHH2E260AAV3
EKHH2E260PAAV3
650
650
200
300
Moreover, the premises must:
•Have adequate water and power supply lines;
•Be available and ready for connection to the
condense drain;
•Be available and ready with adequate discharge
pipes in case of damage caused to the boiler or
actuation of the safety valve or breakage of
pipes/connections;
•Have containment systems in case of serious
water leaks;
•Be sufficiently lit (where appropriate);
•Not measure less than 20 m3;
•Be frost-proof and dry.
WARNING!
In order to avoid the propagation of mechanical
vibrations, do not install the equipment on floor
slabs with wooden beams (e.g. in lofts).
6.1.1 Securing to the floor
To secure the product to the floor, fasten the supplied
brackets as shown in fig. 3.
Fig.3 - Fastening brackets
Then secure the unit to the floor with the aid of suitable
plugs not supplied, as shown in fig. 3a.
Fig.3a - Securing to the floor
6.2 Ventilation connection
Apart from the space indicated in paragraph 6.1, the
heat pump requires adequate ventilation.
It is necessary to create a dedicated air duct as
indicated in the following illustration (Fig. 4a and 4b).
X3
Y1
X2X1

≥500 kg

Page 16
Installation and user manual
Fig. 4a –Example of an air outlet duct
Moreover, it is important to ensure an adequate
ventilation of the premises where the equipment is to be
installed.
An alternative solution is indicated in the following
illustration (Fig. 4 and 4b): this consists of a second
duct that draws air in from outside instead of directly
from inside the premises.
Fig. 3b –Example of dual duct connection
Carry out the installation of each air duct taking care
that:
•The weight of such does not adversely affect the
equipment itself;
•Maintenance operations can be carried out;
•This is adequately protected so as to avoid the
accidental intrusion of material inside the
equipment itself;
•It doesn’t exceed the maximum suggested length
of 6 meters (with 2 elbow junctions 90°).
•The maximum total allowable pressure drop for all
components, including through holes for mounting
on external wall, within the pipe system does not
exceed 120 Pa.
During operation, the heat pump tends to lower
the ambient temperature if the external air duct
is not carried out.
An appropriate protection grid must be installed
in line with the discharge pipe conveying air to
the outside with the aim of avoiding foreign
bodies from entering the equipment. In order to
guarantee maximum device performance, the
grid chosen must ensure low pressure loss.
In order to avoid the formation of condensate:
insulate the air discharge pipes and the air duct
cover connections with steam-tight thermal
cladding of an adequate thickness.
If it is considered necessary in order to prevent
flow noise, sound mufflers can be mounted.
Fig. 4 –Example of dual duct connection on back
side (optional)
Example A
Example B
Outside
Outside

Installation and user manual
Page 17
Fit the pipes, the wall through holes and the
connections to the heat pump with vibration
damping systems.
WARNING!
The simultaneous operation of an open-flue
firebox (e.g. an open-flue fireplace) together
with the heat pump causes a dangerous
environmental pressure drop. This could cause
the backflow of exhaust gas into the
environment itself.
Do not operate the heat pump together with
an open-flue firebox.
Use only sealed-chamber fireboxes (approved)
with a separate duct for combustion air.
Keep the doors to the boiler room closed and
hermetically sealed if it does not have a
combustion air supply in common with
inhabited areas.
6.2.1 Particular installation
conditions
One of the peculiarities of the heat pump heating
system is represented by the fact that these units cause
a considerable reduction of the air temperature that is
generally ejected from inside the home. Apart from
being colder than the ambient air, the exhaust air is also
completely dehumidified; for this reason, it is possible to
allow the air to flow back into the home in order to cool
specific environments or rooms during the summer.
Installation consists of the splitting of the discharge pipe
to which two shutters are applied (“A” and ”B”) with the
aim of directing the air flow either towards the inside
(Fig. 5a) or the outside of the home (Fig. 5b).
Fig. 4a –Example of installation in summer
Fig. 5b –Example of installation in winter
Outside area
Indoor area
Outside area
Indoor area
Shutter “A”
closed
Shutter “B”
open
Shutter “A”
open
Shutter “B”
closed

Page 18
Installation and user manual
6.3 Device mounting and
connection
The device must be installed on a stable, flat floor
surface that is not subject to vibration.
Fig. 5 –Overall dimensions
(260l versions)
A
B
C
D
E
F
G
mm
mm
mm
mm
mm
mm
mm
650
2000
600
160
1391
1190
1085
H
I
J
K
L
M
N
mm
mm
mm
mm
mm
mm
mm
980
860
275
70
150
380
195
O
P
Q
R
mm
mm
mm
mm
337,5
10
850
(200l versions)
A
B
C
D
E
F
G
mm
mm
mm
mm
mm
mm
mm
650
1504
1714
600
160
891
1101
670
795
H
I
J
K
L
M
N
mm
mm
mm
mm
mm
mm
mm
/
590
275
70
150
380
195
O
P
Q
R
mm
mm
mm
mm
337,5
10
535
560
6.4 Water supply connections
Connect the cold water inlet and the outlet pipes to the
appropriate connection points (Fig.7).
The table below shows the characteristics of the
connection points.
Pos.
Description
Connection/hole

Cold water inlet pipe
G 1”

Hot water outlet pipe
G 1”

Condensate drain
G ½”

Recirculation pipe
G ¾”

Coil for solar thermal
power
G 1”1/4

Probe immersion sleeve
(only in models provided
with it)
½”G
Fig. 7 –Water supply connections
A
ØD
C
N
ØP
B
L
O
M
K
J
I
H
E
G
F
Air outlet
Air inlet






D
P

Installation and user manual
Page 19
The following illustration (Fig. 8) shows an example of a
water supply connection.
Fig. 8 –Example of the water supply system
Fig. 8a –Example of heavy series safety valve
N.B.
It is compulsory to install a dirt filter on the cold
water inlet pipe. The equipment should not work
with water hardness lower than 12°F; on the
contrary, when the water hardness is particularly
high (higher than 25°F), it is recommended to use
a water softener, properly calibrated and
monitored; in this case the residual hardness
should not fall below 15°F.
PLEASE NOTE!
It is advisable for the system installer to install
a 7-bar safety valve on the cold water intake
pipe (Fig. 8a).
N.B.
The safety equipment for protection against
over pressure must be operated regularly in
order to remove limescale deposits and to
check that it is not blocked (Fig. 8a)
N.B.
For a proper installation of the equipment, a
hydraulic safety group in accordance to UNI
EN 1487:2002 standard should be provided. It
should include at least: a shut-off valve, a
check valve, a control device of the check
valve, a safety valve, a device to interrupt the
water load (Fig. 8a)
N.B.
The drain hose connected to the equipment
for overpressure protection must be installed
with a continuous downward slope (slope> 3
°) and in an area protected against the
formation of ice (Fig. 8)
WARNING!
In case an expansion vessel is not being
installed, make sure that in the cold water
intake there is not any non-return valve
installed.
WARNING!
The heat pump for the production of domestic
hot water is capable of heating water up to
more than 60°C. For this reason, as a
protection against burns, it is necessary to
install an automatic thermostat mixing
equipment to the hot water pipe (Fig. 8).
Water inlet pipe;
Shut-off valve;
Automatic thermostat mixing equipment
Heat pump
Ricirculation pump
Spring check valve
Hot water outlet pipe
Safety valve
Inspectionable end of discharge pipe
Drain tap
Expansion vessel
LPressure regulator
MPressure gauge
Cold water inlet
Boiler connection
Drain tap connection

Page 20
Installation and user manual
6.4.1 Condense drain connections
Condensate that forms during the operation of the heat
pump flows through an appropriate discharge pipe
(G 1/2”) that passes inside cladding and it comes out on
the side of the equipment.
This must be connected to a duct via a siphon so that
the condensate can flow freely (Fig. 9a or Fig. 9b).
Fig. 9a –Examples of condensate drain connection
via siphon
Fig. 9b –Example of condensate drain connection
using siphon with water interceptor
6.5 Solar power system
integration
The following illustration (Fig. 10) shows an example of
solar power system integration.
Cold water intake pipe
Solar power system pump and accessories
Solar collectors
Heat pump
Recirculation pump
Spring check valve
Drain tap
Solar thermal power coil
Hot water outlet pipe
Fig. 10 –Example of solar power system integration
≥ 60
≥ 60
Ø20
G ½”


alv
ola






