Daikin EKHHE200CV3 Operating instructions

EKHHE200CV3
EKHHE200PCV3
EKHHE260CV3
EKHHE260PCV3
User, Installations
and Maintenance Manual
Domestic Hot Water Heat Pump
Monobloc type

Page 2 User, Installations and Maintenance Manual
1. GENERAL SAFETY PRECAUTIONS ............................................................................................................3
2. INTRODUCTION ..............................................................................................................................................7
2.1 Products ............................................................................................................................................................................ 7
2.2 Disclaimer.......................................................................................................................................................................... 7
2.3 Copyright ........................................................................................................................................................................... 8
2.4 Available versions and congurations ............................................................................................................................... 8
3. HANDLING AND TRANSPORT .....................................................................................................................8
3.1 Receipt............................................................................................................................................................................... 8
4. CONSTRUCTION CHARACTERISTICS .....................................................................................................10
4.1 Dimensional data............................................................................................................................................................. 11
4.2 Technical characteristics.................................................................................................................................................. 12
5. IMPORTANT INFORMATION .......................................................................................................................13
5.1 Compliance with European regulations ........................................................................................................................... 13
5.2 Casing protection rating .................................................................................................................................................. 13
5.3 Operating limits................................................................................................................................................................ 13
5.4 Operating limits ............................................................................................................................................................... 13
5.5 Basic safety rules............................................................................................................................................................. 14
5.6 Information on the refrigerant used ................................................................................................................................. 14
6. INSTALLATION AND CONNECTIONS........................................................................................................14
6.1 Preparation of place of installation .................................................................................................................................. 14
6.2 Securing to the oor......................................................................................................................................................... 15
6.3 Aeraulic connections........................................................................................................................................................ 15
6.4 Securing and connections of this appliance .................................................................................................................... 17
6.5 Hydraulic connections ..................................................................................................................................................... 17
6.6 Integration with solar thermal system (only for models EKHHE200PCV3, EKHHE260PCV3) ..................................... 18
6.7 Electrical connections ..................................................................................................................................................... 19
6.8 Wiring diagram................................................................................................................................................................. 21
7. DESCRIPTION OF USER INTERFACE AND OPERATION OF EQUIPMENT.........................................22
7.1 Turning the water heater on and o󰀨 and unlocking the buttons....................................................................................... 23
7.2 Setting the clock .............................................................................................................................................................. 23
7.3 Setting time bands........................................................................................................................................................... 23
7.4 Setting the hot water set-point......................................................................................................................................... 23
7.5 Operating mode............................................................................................................................................................... 24
7.6 Additional functions.......................................................................................................................................................... 25
7.7 Faults/protection .............................................................................................................................................................. 26
8. COMMISSIONING..........................................................................................................................................27
8.1 Query, editing operating parameters ............................................................................................................................... 27
9. TROUBLESHOOTING...................................................................................................................................30
9.1 Power board fuse replacement........................................................................................................................................ 31
9.2 Heating element safety thermostat reset......................................................................................................................... 31
10. MAINTENANCE .............................................................................................................................................32
10.1 Sacricial anode check/replacement............................................................................................................................... 32
10.2 Boiler emptying ............................................................................................................................................................... 32
11. DISPOSAL......................................................................................................................................................33
12. PRODUCT SHEET.........................................................................................................................................33

Page 3User, Installations and Maintenance Manual
1. GENERAL SAFETY PRECAUTIONS
CAUTION:
• This manual is an integral part of the product. Keep it with care with the appliance,
and hand it on to the next user/owner in case of change of property.
• These instructions are also available from the manufacturer’s customer service and
its website.
• Read the instructions and warnings in this manual carefully, they contain important
information regarding safe installation, use and maintenance.
SAFETY WARNINGS
Do not use the appliance for any other than its specied use. The manufacturer is not liable for damage
resulting from improper or incorrect use or failure to observe the instructions given in this manual.
This appliance is not intended for use by persons (including children) whose physical, sensory or
mental capacities are reduced, or persons without experience or knowledge, unless they have been
given instructions and monitored previously when using the appliance by a person responsible for
their safety.
Children must be supervised to ensure they do not play with the appliance.
This appliance may be used by children 8 years of age or older, and those with reduced physical,
sensory or mental capacity or lack of experience or knowledge, if they are properly supervised or
if instructions for the safe use of the appliance have been given to them and the risks involved are
clear to them.
Children are not permitted to play with the appliance.
Water heated to over 50°C can cause immediate serious burns if delivered directly to the taps.
Children, disabled persons and the elderly are particularly at risk. It is recommended to install
a thermostatic mixer valve on the water delivery line.
This appliance must not be cleaned or maintained by children without supervision.
Do not touch the appliance when barefoot or if any part of your body is wet.
Do not leave ammable materials in contact with or in the vicinity of the appliance.
The appliance must be emptied when it is out of service in an area subject to subzero
temperatures. Drain as described in the appropriate chapter.
INSTALLATION CAUTION
The appliance must be installed and commissioned by a qualied technician in accordance with
local legislation and health and safety regulations. All power circuits must be shut o󰀨 before you
open the terminal block.

Page 4 User, Installations and Maintenance Manual
Incorrect installation can result in damage to property and injury to persons and animals; the
manufacturer is not liable for the consequences.
This product is heavy, handle with care and install the product in a frost-free room.
Ensure that the bulkhead can support the weight of the water lled appliance.
The destruction of the appliance by overpressure due to the blocking of the safety device
inactivates the warranty.
INSTALLATION WARNINGS
When installing this product in a bathroom do not use the “Prohibited space” and respect, at least,
the “Protected space” listed as shown below:
Prohibited space Protected space
This product must be placed in an accessible location.
The water heater must be xed to the ground using the xing bracket provided for this purpose and
adhesives are not considered to be a reliable xing means.
This product is designed to be used at a maximum altitude of 2000 m.
Refer to description and illustrations in paragraphs 6.1, 6.2 and 6.4.
AERAULIC CONNECTIONS WARNINGS
The simultaneous operation of an open-chamber hearth (e.g. open replace) and the heat pump
causes a dangerous negative pressure in the room. The negative pressure can cause the return of
exhaust gases into the room. Do not operate the heat pump together with an open-chamber hearth.
Only use sealed-chamber hearths (approved) with separate combustion air supply.
Seal the doors of boiler rooms that do not have the inow of combustion air in common with living
areas.
A suitable protection grille must be installed both at the air intake and outtake connections to
prevent any foreign bodies from going inside the equipment.
Refer to description and illustrations in the “Aeraulic connections.” paragraph 6.3.

Page 5User, Installations and Maintenance Manual
HYDRAULIC CONNECTIONS WARNINGS
It is mandatory to screw on to the appliance’s water intake pipe a suitable device against
overpressure (not supplied). In countries which acknowledge EN 1487, the appliance’s water intake
pipe must be equipped with a safety device compliant with previously mentioned standard.
It must be new, with 3/4” dimensions and calibrated to a maximum pressure of 0.7 MPa, including
at least a cock, check valve, safety valve and hydraulic load cut-out.
This safety device must not be tampered with and must be made to operate frequently in order to
check that it is not blocked and to remove any limescale.
The water may drip from the discharge pipe of the pressure-relief device and the pipe must be
left open to the atmosphere. The discharge pipe connected to the pressure-relief device is to be
installed in a continuously downward direction and in a frost-free environment.
A pressure reducer (not supplied) is required when the inlet water pressure is greater than 0.5 MPa
(5 bar), which must be attached to the water mains.
The minimum inlet water pressure for the correct operation of the appliance is 0.15 MPa (1.5 bar).
For models that incorporate a heat exchanger (solar coil), the circuit must not exceed 1.0 MPa (10
bar) and its temperature must not exceed 80°C.
Refer to description and illustrations in the “Hydraulic connections” paragraph 6.5 and “Integration
with solar thermal system” paragraph 6.6.
ELECTRICAL CONNECTIONS WARNINGS
The appliance shall be installed in accordance with national wiring regulations.
The electrical installation must include an all-pole disconnection device (circuit-breaker, fuse)
upstream of the appliance, complying with local installation rules in force (30 mA di󰀨erential circuit
breaker).
Earth connection is mandatory. The manufacturer of the appliance shall not be held liable for any
damage caused by failure to earth the system or due to anomalies in the electric power supply.
It is strictly forbidden to connect the appliance at the AC mains through extensions or by a power strip.
Before taking o󰀨 the cover, make sure that the power is turned o󰀨 to prevent injury or electric shock.
Refer to description and illustrations, respectively, in the “Electrical connections” paragraph 6.7 and
“Wiring diagram“ paragraph 6.8.

Page 6 User, Installations and Maintenance Manual
SERVICING - MAINTENANCE - TROUBLESHOOTING WARNINGS
Any repairs, maintenance, plumbing and electrical connections must be done by qualied
technicians using original spare parts only. Failure to observe the above instructions can
compromise the safety of the appliance and relieves the manufacturer of any liability for the
consequences.
To empty the appliance: turn o󰀨 the power supply and cold water, open the hot water taps and then
operate the drain valve of the safety device.
The pressure relief valve must be operated regularly to remove scale deposits and to ensure that
it is not blocked.
The appliance is equipped with a supply cord that if damaged, must be replaced by the
manufacturer, its service agent or similarly qualied persons in order to avoid a hazard.
The appliance incorporates a time-Iag miniature fuse-link that if broken, it must be replaced with
a fuse model “T5AL250V” in accordance with IEC 60127.
Refer to description and illustrations, respectively, in the “TROUBLESHOOTING” chapter 9 and
“MAINTENANCE” chapter 10.

Page 7User, Installations and Maintenance Manual
2. INTRODUCTION
This installation and maintenance manual is an integral part of
the heat pump (hereinafter equipment).
The manual must be kept for future reference until dismantling.
It is intended for the specialist installer (installers - maintenance
technicians) and the end user. The manual describes the instal-
lation procedures to be observed for correct and safe operation
of the equipment, and the methods of use and maintenance.
In case of sale or transfer to another user, the manual must stay
with the unit.
Before installing and/or using the equipment, read this instruc-
tion manual carefully and in particular chapter 5 on safety.
The manual must be kept with the unit and always be available
to qualified installation and maintenance personnel.
The following symbols are used in the manual to highlight the
most important information:
Caution
Procedures to be followed
Information / Suggestions
2.1 Products
Dear Customer,
Thank you for purchasing this product.
Our company, always attentive to environmental issues, uses
low environmental impact technologies and materials for its
products, in compliance with EU WEEE standards (2012/19/EU
– RoHS 2011/65/EU).
2.2 Disclaimer
The conformity of these operating instructions with the hard-
ware and the software has been carefully checked. Neverthe-
less there may be differences; and no responsibility is assumed
for total conformity.
In the interest of technical improvement, we reserve the right to
make construction or technical data changes at any time. Any
claim based on indications, figures, drawings or descriptions is
therefore excluded. They are subject to possible errors.
The supplier declines any liability for damage due to command
errors, improper or inappropriate use, or due to unauthorized
repairs or modifications.

Page 8 User, Installations and Maintenance Manual
2.3 Copyright
These operating instructions contain information protected by
copyright. No part of these operating instructions may be pho-
tocopied, duplicated, translated or recorded on storage media
without prior permission from the supplier. Any violations will be
subject to compensation for damage. All rights, including those
resulting from the granting of patents or registration of utility
models, are reserved.
2.4 Available versions and congurations
This appliance incorporates a 1.9 kW heat-pump unit and can
be set up in different configurations, according to possible inte-
gration with additional heating sources (e.g. solar heating) or
depending on boiler capacity.
Version Configuration description
EKHHE200CV3
EKHHE260CV3
Air heat pump for domestic hot water (DHW) pro-
duction
EKHHE200PCV3
EKHHE260PCV3
Air heat pump for DHW production prearranged
for the solar thermal system.
3. HANDLING AND TRANSPORT
The equipment comes in a cardboard box(*).
It is secured to a pallet by means of three screws.
For unloading operations use a forklift or an adequate pallet
truck.
The packed equipment can be placed horizontally and back
down to facilitate undoing the anchoring screws.
Unpacking must done carefully so as not to damage the equip-
ment casing if using knives or cutters to open the cardboard
packaging.
After removing the packaging, check the integrity of the unit. If
in doubt, do not use the unit; contact authorized technical per-
sonnel.
Before eliminating the packaging, according to the applicable
environmental protection regulations, make sure all the acces-
sories supplied have been removed.
(*) Note: The type of packaging may undergo variations at the
discretion of the manufacturer.
For the entire period the equipment remains idle, awaiting com-
missioning, it is advisable to put it in a place protected from
atmospheric agents
3.1 Receipt
In addition to the units, the packages contain accessories and
technical documentation for use and installation. Check that the
following are present:
• 1x user, installation and maintenance manual;
• 3x fastening brackets plus screws;
• 1x thermal cut-out (only for EKHHE200PCV3 and
EKHHE260PCV3).
For the entire period the equipment remains idle, awaiting com-
missioning, it is advisable to put it in a place protected from
atmospheric agents.

Page 9User, Installations and Maintenance Manual
Positions allowed for transport and handling
fig. 1
ATTENTION! During the product handling and
installation phases the upper part must not be
stressed in any way, as it is not structural.
ATTENTION! Horizontal transport is allowed only
for the last km according to that indicated (see
"Positions not allowed for transport and han-
dling"), making sure supports are positioned in
such a way at the bottom of the boiler so as not
to stress the upper part, as it is not structural.
During horizontal transport the display must
face upwards.
Position allowed only for the last km
Positions not allowed for transport and handling
fig. 2

Page 10 User, Installations and Maintenance Manual
4. CONSTRUCTION CHARACTERISTICS






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
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
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
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







fig. 3


1 Heat pump
2 User interface
3 Steel casing
4 Heating element
5 Magnesium anode
6 Ventilation air inlet (Ø 160 mm)
7 Ventilation air outlet (Ø 160 mm)
8 Cold water inlet connection
9 Hot water outlet connection
10 Prearrangement for recirculation
11 Condensate drain
12 Prearrangement for solar coil Inlet
Only for models EKHHE200PCV3
EKHHE260PCV3
13 Prearrangement for solar coil outlet
Only for models EKHHE200PCV3
EKHHE260PCV3
14 Steel tank with vitreous enamel coating according to DIN 4753-3
15 Condenser
16 Rotary compressor
17 Finned pack evaporator
18 Electronic fan
19 Boiler probes
20 Probe holder pocket for solar - Only for models
EKHHE200PCV3
EKHHE260PCV3
21 Polyurethane insulation
22 Carrying handles
23 Tube for safety thermostat bulb
24 Power board
26 Compartment for accessing heating element and safety
thermostat bulb

Page 11User, Installations and Maintenance Manual
4.1 Dimensional data

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


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

fig. 4
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




fig. 5
380
Ø 160
Ø 160
Ø 620
628
fig. 6
MODEL Ø EKHHE200PCV3 EKHHE260PCV3 EKHHE200CV3 EKHHE260CV3 UM
A1”G 250 250 250 250 mm
B- 490 493 / / mm
C1/2”G 600 600 600 600 mm
D- 705 785 705 785 mm
E1”G 876.5 1162 876.5 1162 mm
G- 1142 1427 1142 1427 mm
H- 1607 1892 1607 1892 mm
I3/4”G 250 250 / / mm
L3/4”G 599 600 / / mm
M3/4”G 705 735 705 735 mm
N3/4”G 877 1162 877 1162 mm
O* 1/2”G 976 1261 976 1261 mm
P- 1073 1358 1073 1358 mm
*O - Outlet connection in plastic material

Page 12 User, Installations and Maintenance Manual
4.2 Technical characteristics
Model EKHHE200PCV3 EKHHE260PCV3 EKHHE200CV3 EKHHE260CV3 U.M.
Heat pump
Power supply 230-1-50 V-PH-Hz
Thermal power (ISO) 1820 1820 1820 1820 W
Total absorbed power in heating (ISO) 430 430 430 430 W
COP (ISO) 4.23 4.23 4.23 4.23 W/W
Rated current in heating (ISO) 2.00 2.00 2.00 2.00 A
Max. total absorbed power in heating 530 530 530 530 W
Max. current in heating 2.43 2.43 2.43 2.43 A
Heating time (EN) (1) 8:17 10:14 8:17 10:14 h:min
Heating energy (EN) (1) 3.25 3.99 3.25 3.99 kWh
Standby consumption (EN) (1) 29 29 29 29 W
Class of use (EN) (1) L XL L XL Type
Power consumption during operating
cycle WEL-TC (EN) (1) 3.62 5.64 3.62 5.64 kWh
COPDHW (EN) (1) 3.23 3.38 3.23 3.38 W/W
COPDHW (EN) (4) 3,49 3,59 3,49 3,59 W/W
Water reference temperature (EN) (1) 53.7 52.7 53.7 52.7 °C
Max. usable amount of water( EN) (2) 0.270 0.330 0.273 0.338 m
3
Heating efficiency ref. standard (EU) 135 139 135 139 %
Efficiency class ref. standard (EU) A+ A+ A+ A+ -
Yearly power consumption (EU) 798 1203 798 1203 kWh/year
Electrical heating element Power 1500 1500 1500 1500 W
Current 6.5 6.5 6.5 6.5 A
Heat pump + heating element
Total absorbed power 1960 1960 1960 1960 W
Rated current 8.5 8.5 8.5 8.5 A
Total max. absorbed power 2030 2030 2030 2030 W
Max. current 8.93 8.93 8.93 8.93 A
Heating time (1) BOOST MODE 3:58 5:06 3:58 5:06 h:min
Storage
Storage capacity 187 247 192 250 l
Max. pressure 0.7 0.7 0.7 0.7 MPa
Material Enameled steel type
Cathodic protection Mg rod anode type
Insulation type\thickness polyurethane/50 type/mm
Air circuit
Fan type Centrifugal type
Air flow rate 350-500 350-500 350-500 350-500 m³/h
Duct diameter 160 160 160 160 mm
Max. available head 200 200 200 200 Pa
Refrigeration circuit
Compressor Rotary type
Refrigerant R134a type
Evaporator Copper-aluminum finned coil type
Condenser Aluminum tube wound outside tank type
Solar coil
Only for models:
EKHHE200PCV3 - EKHHE260PCV3
Material Enameled steel / / type
Total area 0.72 0.72 / / m²
Max. pressure 1.0 1.0 / / MPa
Internal sound power levels (3) 50 50 50 50 dB(A)
External sound power levels (3) 49 49 49 49 dB(A)
Empty weight Net 96 106 85 97 kg
NOTES
• (ISO): data according to standard ISO 255-3
• (EN): data according to standard EN 16147:2017
• (EU): data according to regulation 2017/1369/EU
• (1): Heating cycle Air inlet temp = 7°C DB/6°C WB Initial water temperature 10°C
• (2): Operating temperature limit 40°C - Water inlet temperature 10°C
• (3): data according to standard EN 12102-1:2018 ECO MODE A 7°C DB/6°C WB
• (4): Heating cycle Air inlet temp = 14°C DB/13°C WB Initial water temperature 10°C

Page 13User, Installations and Maintenance Manual
5. IMPORTANT INFORMATION
5.1 Compliance with European regulations
This heat pump is a product intended for domestic use in com-
pliance with the following European directives:
• Directive 2012/19/EU (WEEE)
• Directive 2011/65/EU on the restriction of the use of certain
hazardous substances in electrical and electronic equipment
(RoHS)
• Directive 2014/30/EU electromagnetic compatibility (EMC)
• Directive 2014/35/EU low voltage (LVD)
• Directive 2009/125/EC eco-friendly design
• Regulation 2017/1369/EU energy labeling
5.2 Casing protection rating
The equipment protection rating is: IP24.
5.3 Operating limits
PROHIBITION! This product is not designed or
intended for use in hazardous environments
(due to the presence of potentially explosive
atmospheres - ATEX or with required IP level
higher than that of the unit) or in applications
requiring safety features (fault-tolerant, fail-safe)
which may be systems and/or technologies to
support life or any other context in which the
malfunction of an application can lead to death
or injury to people or animals, or serious dam-
age to property or the environment.
NB!: If the possibility of a product fault or failure can
cause damage (to people, animals and property) it is nec-
essary to provide for a separate functional surveillance
system equipped with alarm functions in order to exclude
such damage. It is also necessary to arrange the replace-
ment operation!
Appliance is not designed for installation outdoors but in
a "closed" place not exposed to the elements.
5.4 Operating limits
The product in question is designed exclusively for heating hot
water for sanitary uses within the limits described below. For
this purpose, it must be connected to the domestic water sup-
ply and the power supply (see chapter “6. INSTALLATION AND
CONNECTIONS”).
5.4.1 Temperature range
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fig. 7- Chart
A = Inlet air temperature (°C)
B = Hot water temperature (°C)
= Operating range for heat pump (HP)
= Integration with heating element only
5.4.2 Water hardness
The unit must not operate with water of hardness under 12°F;
however, with particularly hard water (above 25°F), it is advis-
able to use a properly calibrated and monitored water softener,
in this case the residual hardness must not fall below 15°F.
NB!: In the design and construction phase of the plants,
the applicable local regulations and provisions must be
respected.

Page 14 User, Installations and Maintenance Manual
5.5 Basic safety rules
• The product must be used by adults;
• Do not open or disassemble the product when it is electrically
powered;
• Do not touch the product if barefoot or with wet or damp parts
of the body;
• Do not pour or spray water on the product;
• Do not climb, sit and/or place any type of object on the
product.
5.6 Information on the refrigerant used
This product contains fluorinated greenhouse gases included in
the Kyoto protocol. Do not release these gases into the atmo-
sphere.
Type of refrigerant: HFC-R134a.
NB!: Maintenance and disposal operations must only be
carried out by qualified personnel.
6. INSTALLATION AND CONNECTIONS
6.1 Preparation of place of installation
The product must be installed in a suitable place, i.e. to allow
normal use and adjustment operations as well as routine and
extraordinary maintenance.
The necessary operating space must therefore be prepared by
referring to the dimensions given in fig. 8 and fig. 9.

fig. 8- Minimum spaces



fig. 9- Minimum spaces
The room must also be:
• Equipped with adequate water and electricity supply lines;
• Prearranged for the condensation water discharge connec-
tion;
• Prearranged with adequate water drains in case of boiler
damage or safety valve intervention or the breakage of pipes/
connections;
• Equipped with possible containment systems in case of seri-
ous water leakage;
• Sufficiently illuminated (where required);
• Not less than 20 m3 in volume;
• Protected against frost and be dry.
ATTENTION! To avoid the propagation of me-
chanical vibrations, do not install the equipment
on oors with wooden beams (e.g. in the attic).

Page 15User, Installations and Maintenance Manual
6.2 Securing to the oor
To secure the product to the floor, fasten the supplied brackets
as shown in fig. 10.
fig. 10- Fastening brackets
Then secure the unit to the floor with the aid of suitable plugs,
not supplied, as shown in fig. 11.
fig. 11- Securing to the floor
6.3 Aeraulic connections
In addition to the spaces indicated in 6.1, the heat pump.re-
quires adequate air ventilation.
Create a dedicated air channel as indicated in fig. 12.
Internal
compartment
Exterior
fig. 12- Example of air outlet connection
It is also important to ensure adequate ventilation of the room
containing the unit. An alternative solution is shown in the figure
below (fig. 13): it provides for a second ducting that takes air
from the outside instead of directly from the inside room.
Internal
compartment
Exterior
fig. 13– Example of air outlet connection

Page 16 User, Installations and Maintenance Manual
Install each air channel, making sure:
• It does not weigh down on the equipment.
• It allows maintenance operations.
• It is adequately protected to prevent the accidental intrusion
of materials inside the equipment.
• The connection to the outside must be done with suitable,
non-flammable piping.
• The total equivalent length of the extraction pipes plus the
delivery, including grilles, must not exceed 12 m.
The table gives the characteristic data of commercial ducting
components with reference to nominal air flows and diameters
160 mm.
Data Smooth
straight pipe
Smooth 90 °
curve Grille UM
Type
Effective
length 1 \ \ m
Equivalent
length 1 2 2 m
During operation, the heat pump tends to lower the room tem-
perature if the air ducting is not to the outside.
A suitable protection grille must be installed at the air extrac-
tion pipe to the outside to prevent any foreign bodies from
entering inside the equipment. To ensure maximum product
performance, the grille must be selected from those with low
pressure loss.
To avoid the formation of condensation water: insulate the air
extraction pipes and the ducted air cover connections with a
steam-tight thermal covering of adequate thickness.
Install silencers if deemed necessary to prevent noise due to
the flow. Equip the pipes, wall outlets and connections to the
heat pump with vibration-damping systems.
6.3.1 Special installation
One of the peculiarities of the heat pump heating systems is
that these units considerably lower the air temperature, gener-
ally expelled to the outside of the house. As well as being colder
than the ambient air, the expelled air is also completely dehu-
midified, therefore the air flow can be returned inside for the
summer cooling of specific rooms or areas.
Installation provides for splitting of the extraction pipe, which is
fitted with two dampers ("A" and "B") for directing the air flow to
the outside (fig. 15) or the inside of the house (fig. 14).
Internal
compartment
Damper "A"
closed
Damper "B"
open
Internal compartment
Exterior
fig. 14- Example of installation in the summer period

Page 17User, Installations and Maintenance Manual
Internal
compartment
Damper "A"
open
Damper "B"
closed
Internal compartment
Exterior
fig. 15- Example of installation in the winter period
6.4 Securing and connections of this appliance
The product must be installed on a stable, flat floor that is not
subject to vibrations.
6.5 Hydraulic connections
Connect the cold water supply line and the outlet line to the ap-
propriate connection points (fig. 16).
The table below gives the characteristics of the connection
points.
Ref. Function Model 200 l / 260 l
1Cold water inlet 1”G
2Solar coil outlet 3/4”G
3Solar coil inlet 3/4”G
4Recirculation 3/4”G
5Hot water outlet 1”G
6Condensate drain 1/2”G
APit for solar probe and ther-
mal cut-out bulb 1/2”G







fig. 16
The following figure (fig. 17) illustrates an example of plumbing
connection.
IN
OUT
fig. 17- Example of water system
Legend ( fig. 17 )
1Water inlet pipe
4Recirculation water inlet
5 Hot water outlet pipe
9Inspectionable end of dis-
charge pipe
10 Pressure gauge
11 Shut-off valve
12 Pressure regulator
13 Safety valve
14 Expansion vessel
15 Drain tap
16 Recirculation pump
17 Spring check valve
18 Automatic thermostat mix-
ing equipment

Page 18 User, Installations and Maintenance Manual
6.5.1 Condensate drain connection
The condensate forming during heat pump operation flows
through a special drain pipe (1/2"G) that passes inside the insu-
lating casing and comes out at the side of the equipment.
It must be connected, via a trap, to a duct so that the conden-
sate can flow regularly (fig. 18).

fig. 18- Examples of condensate drain connection via a trap
6.6 Integration with solar thermal system (only for models
EKHHE200PCV3, EKHHE260PCV3)
The following figure (fig. 19) shows how to connect the equip-
ment to a solar thermal system controlled by a dedicated elec-
tronic controller (not supplied) that has a "voltage-free contact"
type output to be connected to the DIG.1 input of the equipment
(see “6.7.1 Remote connections”).
To use the equipment in this configuration it is necessary to set
the parameter P16 = 1 (see par. 8.1).






 













fig. 19
The following figures (fig. 20 and fig. 21) show how to connect
the equipment to a solar thermal system controlled directly by
the latter, without the aid of a dedicated electronic controller.
In the configuration of fig. 20, in case of solar collector overtem-
perature a drain valve (not supplied) is activated to discharge in
a DHW storage tank (puffer) hot water contained in the equip-
ment.
In the configuration of fig. 21, however, in this condition the solar
collector shutter is closed.
In both cases this occurs in order to allow the collector to cool
down.

Page 19User, Installations and Maintenance Manual
To use the equipment in both these configurations it is neces-
sary to set the parameter P12 = 2 and P16 = 2 (see par.8.1).
















fig. 20
















fig. 21
Legend (fig. 19, fig. 20 and fig. 21)
1 Cold water inlet
2 Solar coil outlet
3 Solar coil inlet
4 Recirculation
5Hot water outlet
8 Solar thermal coil
10 Drain valve
16 Recirculating pump
(ON/OFF type)
17 Check valve
18 Automatic thermostatic
mixing device
19 Solar collector
20 Solar collector probe
(PT1000 not supplied*)
21 Solar collector shutter
22 DHW puffer
23 Solar coil probe
(not supplied)
24 Heat pump
25 Solar pump (ON/OFF
type)
26 Thermal cut-out (supplied)
for solar pump
A Pit for solar probe and
thermal cut-out
* We advise to use solar collector probe PT1000 (available
on manufacturer’s accessories list)
6.7 Electrical connections
Before connecting the appliance to AC mains, a check must be
carried out on the electrical system to verify conformity to the
regulations in force and that the electrical system can suitably
withstand the water heater’s maximum power consumption val-
ues (refer paragraph 4.2 for technical characteristics), in terms
of the size of the cables and their conformity to the regulations
in force.
The appliance is supplied with a power cord with a Schuko plug
(fig. 23) and for the connection with AC mains is required:
• a Schuko wall socket with ground and separate protection is
required (fig. 22);
• an omnipolar 16 A circuit breaker with a contact opening of
at least 3 mm;
• a 30 mA differential circuit breaker.
It is forbidden to use multiple outlet sockets, extension cables
or adaptors.
It is forbidden to use piping from the water, heating and gas
systems for earthing the appliance.
Prior to operating the machine, make sure that the electricity
mains voltage conforms to the value indicated on the appli-
ance’s data plate.
The manufacturer of the appliance shall not be held liable for
any damage caused by failure to earth the system or due to
anomalies in the electric power supply.
fig. 22 - Schuko socket fig. 23 - Unit plug

Page 20 User, Installations and Maintenance Manual
6.7.1 Remote connections
The equipment is designed to be connected to other remote
energy systems or energy meters (solar thermal, photovoltaic,
Off-Peak)
INPUTS
• Digital 1 (DIG1). Digital input for solar thermal (only for mod-
els PCV3). In case of a solar thermal system with dedicated
control unit, the latter can be connected to the equipment to
deactivate the heat pump when there is energy production
from solar source. Having a voltage-free contact that closes
when the solar system is active, it can be connected to the
two white and brown wires of the 6-core cable supplied with
the equipment.
Set the parameter P16 = 1 to activate the supplement with
solar thermal.
• Digital 2 (DIG2). Digital input for photovoltaic. In case of a
photovoltaic system connected to the plant, it can be used
to subtract energy in the form of hot water in times of over-
production. If there is a voltage-free contact, e.g. from the in-
verter, which closes when there is overproduction of energy,
it can be connected to the two green and yellow wires of the
6-core cable supplied with the.equipment.
Set the parameter P23 = 1 to activate the supplement with
photovoltaic.
• Digital 3 (DIG3). Input for Off-Peak. This function, available
only in some countries, allows the equipment to be activated
only when there is a signal coming from outside with prefer-
ential tariff. If the electric contactor has a voltage-free contact
which closes when the preferential tariff is available, it can be
connected to the two gray and pink wires of the 6-core cable
supplied with the equipment.
Set the parameter P24 = 1 to activate Off-peak in ECO mode
or P24 = 2 for Off-peak in AUTO mode.
• Digital input (LPSW) for the flow switch of the solar thermal/
DHW circulating pump (not supplied)
• Analog input (PT1000) for solar collector probe.
OUTPUTS
230 Vac - 16 A relay output with N.O. contact. for solar thermal /
DHW recirculation circulating pump (ON/OFF type).
230 Vac - 5 A relay output with contact N.O. for solar collector
shutter / drain valve.
Only for models PCV3
Note: For more information on remote connections and the
configuration of the equipment with these systems, see the
par. “7.5 Operating mode” and “8.1.1 List of equipment
parameters”.
6.7.1.1 Remote connection
For the connection to the digital inputs the equipment is sup-
plied with an additional 6-core cable already connected to the
PCBA of the user interface (located inside the device). The re-
mote connections to possible energy systems are the responsi-
bility of the qualified installer (connection boxes, terminals and
connection cables).
The following figures give an example of remote connection (fig.
24 and fig. 25) which must not be longer than 3 m.
fig. 24- Example of remote connection



  
  
fig. 25