Daikin EKHHP300AA2V3 User manual

Installation and operating
instructions
EKHHP300AA2V3
EKHHP500AA2V3
Hot water heat pump
(indoor unit)
Installation and operating instructions
Hot water heat pump
(indoor unit)
English

List of contents
Installation and operating instructions
2
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423449_05 – 08/2016
1 Particular instructions for safe operation . 3
1.1 Particular safety instructions . . . . . . . . . . . . . . . 3
1.2 Observing instructions . . . . . . . . . . . . . . . . . . . . 3
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Warning signs and explanation of symbols . . . . 4
2.1.1 Meaning of the warnings . . . . . . . . . . . . . . . . . . . . .4
2.1.2 Validity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.1.3 Handling instructions. . . . . . . . . . . . . . . . . . . . . . . .4
2.2 Avoid danger . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Instructions for operating safety. . . . . . . . . . . . . 5
2.4.1 Before working on the hydraulic system . . . . . . . . .5
2.4.2 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . .5
2.4.3 Working on cooling systems (heat pump) . . . . . . . .5
2.4.4 Site of installation . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.4.5 Sanitary connection. . . . . . . . . . . . . . . . . . . . . . . . .6
2.4.6 Requirements for the depressurised storage tank
water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.4.7 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.4.8 Instructing the user/owner. . . . . . . . . . . . . . . . . . . .6
3 Product description. . . . . . . . . . . . . . . . . . . 7
4 Set-up and installation . . . . . . . . . . . . . . . . 9
4.1 Tightening torque . . . . . . . . . . . . . . . . . . . . . . . 9
4.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3 Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.4 Hydraulic connection . . . . . . . . . . . . . . . . . . . . 11
4.4.1 Optional: Connection of an external heat generator12
4.5 Laying coolant lines . . . . . . . . . . . . . . . . . . . . . 13
4.6 Pressure test and filling the coolant circuit. . . . 13
4.7 Filling the system with water . . . . . . . . . . . . . . 14
4.7.1 Filling the hot water heat exchanger . . . . . . . . . . .14
4.7.2 Filling the storage tank . . . . . . . . . . . . . . . . . . . . .14
4.8 Electrical connection . . . . . . . . . . . . . . . . . . . . 14
4.8.1 Connection EKHHP on heat pump external unit, mains
connection Booster-Heater (BSH). . . . . . . . . . . . .15
4.8.2 High/low tariff mains connection (HT/NT) . . . . . . .15
4.8.3 Connection EVU receiver (intelligent regulator
Smart Grid - SG) . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.8.4 Optional: Connection of an external heat generator16
5 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1.1 Requirements:. . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5.1.2 Start the system . . . . . . . . . . . . . . . . . . . . . . . . . .17
6 Decommissioning . . . . . . . . . . . . . . . . . . . 19
6.1 Temporary shutdown . . . . . . . . . . . . . . . . . . . . 19
6.1.1 Draining the storage tank . . . . . . . . . . . . . . . . . . .19
6.1.2 Draining the hot water circuit. . . . . . . . . . . . . . . . .20
6.2 Final shutdown. . . . . . . . . . . . . . . . . . . . . . . . . 20
7 Operation, Parameters . . . . . . . . . . . . . . . 22
7.1 Displays and function of the operating elements22
7.2 Basic functions. . . . . . . . . . . . . . . . . . . . . . . . . 23
7.2.1 Switching the system on and off . . . . . . . . . . . . . .23
7.2.2 Setting the clock . . . . . . . . . . . . . . . . . . . . . . . . . .23
7.2.3 Display of the current Temperature. . . . . . . . . . . .23
7.2.4 Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
7.3 Operating modes . . . . . . . . . . . . . . . . . . . . . . . 23
7.3.1 ECO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
7.3.2 AUTOMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
7.3.3 Low Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.3.4 High Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.4 Setting the timer programme. . . . . . . . . . . . . . 25
7.4.1 Display switching times . . . . . . . . . . . . . . . . . . . . 25
7.4.2 Programming switching times . . . . . . . . . . . . . . . 25
7.4.3 Delete switching time . . . . . . . . . . . . . . . . . . . . . 25
7.5 Parameter settings . . . . . . . . . . . . . . . . . . . . . 27
7.5.1 Setting parameters . . . . . . . . . . . . . . . . . . . . . . . 27
7.5.2 Parameter description . . . . . . . . . . . . . . . . . . . . . 27
7.5.3 Parameter factory settings. . . . . . . . . . . . . . . . . . 30
7.5.4 Individual parameter settings. . . . . . . . . . . . . . . . 31
7.5.5 Individual switching time settings . . . . . . . . . . . . 31
8 Malfunctions and fault codes . . . . . . . . . . 32
8.1 Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.2 Fault code . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9 Service and maintenance . . . . . . . . . . . . . 35
9.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.2 Periodic Checks . . . . . . . . . . . . . . . . . . . . . . . 35
9.2.1 Filling, topping up storage tank - without installed solar
system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.2.2 Filling, topping up storage tank - with optional
KFEKFE filling connection or with installed DrainBack
solar system DrainBack. . . . . . . . . . . . . . . . . . . . 36
10 Technical data . . . . . . . . . . . . . . . . . . . . . . 37
11 Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
12 List of keywords . . . . . . . . . . . . . . . . . . . . 42

1 xParticular instructions for safe operation
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
3
1 Particular instructions for safe operation
1.1 Particular safety instructions
1.2 Observing instructions
These instructions are a >> translation of the original
version << in your language.
This manual describes all the necessary activities for installation,
start-up and maintenance, as well as for operation and settings.
All parameters needed for trouble-free operation have been con-
figured at the factory. Please see the attached documents for a
detailed description of operation and control.
●Please read this manual carefully and thoroughly before
proceeding with the installation or modification of the heating
system, operation of the heating system and making settings.
●Make a note of the preset values before you make any
changes to the unit configuration.
●Comply strictly with warning instructions.
Relevant documents
– External unit for DAIKIN EKHHP: the associated installation
and operating instructions.
– When connecting to a DAIKIN solar system: the associated
installation and operating instructions.
The guides are included in the scope of supply for the individual
units.
WARNING!
Disregarding the following safety instructions may result in serious physical injury or death.
●This equipment must only be used by children aged 8 and above and by persons with restricted
physical, sensory or mental capabilities or with a lack of experience and knowledge, if they are
under supervision or if they have been instructed in the safe use of the equipment and under-
stand the dangers arising therefrom. Children must not play with the equipment. Cleaning and
user maintenance must not be carried out by children without supervision.
●Make up the power supply in accordance with IEC 60335-1, via a separator device which exhibits
contact separation in all poles with a contact opening distance that provide full disconnection in
accordance with overvoltage category III.
●All the electrical work must only be carried out by electrically qualified experts and with consider-
ation of the local and national regulations, and the instructions in this manual.
Check that a suitable electrical circuit is being used.
Inadequate capacity of the power circuit or improperly executed connections can cause electro-
cution or fire.
●The customer must install a pressure relief device with rated over-pressure less than 0.6 MPa
(6 bar). The connected drain line must have a continuous gradient and a free outlet in a frost-free
environment (see Section 2.4.1, 2.4.5 and 4.4 (Figure 4-5)).
●Water may drip out of the drain line of the pressure relief device. The drain opening must be left
free to atmosphere.
●The pressure relief device must be operated regularly in order to remove scale deposits and to
make sure it is not blocked.
●The storage tank and hot water circuit can be drained. The instructions in Sections 6.1.1 and
6.1.2 must be observed.
●All the work on the refrigerant circuit must only be carried out by refrigeration qualified experts
and with consideration of the local and national regulations, and the instructions in this manual.
●Improperly executed work on the refrigeration circuit of the heat pump can endanger life and
health of persons and can impair the function of the heat pump (see Section 6.2).

Installation and operating instructions
4
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
2 xSafety
2 Safety
2.1 Warning signs and explanation of
symbols
2.1.1 Meaning of the warnings
Warnings in this manual are classified according
into their severity and probability of occurrence.
Special warning signs
Some types of danger are represented by
special symbols:
2.1.2 Validity
Some information in this manual has limited va-
lidity. The validity is highlighted by a symbol.
2.1.3 Handling instructions
●Instructions on actions are shown as a list.
Actions of which the sequential order must be
maintained are numbered.
2.2 Avoid danger
The DAIKIN EKHHP is state-of-the-art and is
built to meet all recognised technical require-
ments. However, improper use can lead to se-
rious injuries or death, as well as causing ma-
terial damage.
To prevent such risks, install and operate
DAIKIN EKHHP only:
– as stipulated and in perfect condition,
– with an awareness of the safety and hazards
involved.
This assumes knowledge and use of the con-
tents of this manual, the relevant accident pre-
vention regulations and the recognised safety-
related and occupational medical rules.
2.3 Intended use
The DAIKIN EKHHP system may only be used
for the generation of hot water and only set up,
connected and operated in accordance with the
specifications in this manual.
Only use of a suitable external unit approved by
DAIKIN is permitted. The following combinations
are permissible in this respect:
Tab. 2-1 Permissible combinations of DAIKIN EKHHP internal units and
DAIKIN heat pump external units
DANGER!
Draws attention to imminent danger.
Disregarding this warning can lead to serious
injury or death.
WARNING!
Indicates a potentially dangerous situation.
Disregarding this warning may result in serious
physical injury or death.
CAUTION!
Indicates a situation which may cause possible
damage.
Disregarding this warning can lead to damage
to property and the environment.
This symbol identifies user tips and par-
ticularly useful information, but not
warnings or hazards.
Electric power
Risk of burning or scalding
Risk of environmental damage
Exterior heat pump unit
Heat pump indoor unit
Pay attention to the stipulated tightening
torque (see Section 4.1).
Applies only to the depressurised solar
system (DrainBack).
Applies only to the solar pressure system.
Results of actions are identified with an
arrow.
External unit Internal unit
ERWQ02AAV3 EKHHP300AA2V3
EKHHP500AA2V3

2 xSafety
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
5
Any other use outside the intended use is con-
sidered as improper. The operator alone shall
bear responsibility for any resulting damage.
Intended use also includes compliance with the
maintenance and service conditions. Spare
parts must at least satisfy the technical require-
ments defined by the manufacturer. This is the
case, for example, with original spare parts.
2.4 Instructions for operating safety
2.4.1 Before working on the hydraulic system
●Work on the DAIKIN EKHHP (such as setup,
servicing, connection and initial start-up) is
only to be carried out by persons who are
authorised and who have successfully
completed qualifying technical or vocational
training and who have taken part in advanced
training sessions recognised by the appro-
priate responsible authorities for the specific
activitiy. This, in particular, includes heating
specialists and climate control technicians
who have experience, as a result of their
technical training and their knowledge of the
subject, of proper and appropriate installation
and maintenance of heating, climate control
and cooling installations and heat pumps.
Switch off the external main switch before
starting any work on the DAIKIN EKHHP and
secure it against unintentional switch-on.
●Seals must not be damaged or removed.
●The domestic water connection must comply
with the requirements of EN 12897.
●Only original DAIKIN replacement parts may
be used.
2.4.2 Electrical installation
●Electrical installation must be carried out only
by qualified electrical experts and in
compliance with the valid electro-technical
guidelines as well as the regulations of the
relevant energy supply company (EVU).
●Make up the power supply in accordance with
IEC 60335-1, overvoltage category III. Means
with contact separation in all poles that
provide full disconnection must be incorpo-
rated in the fixed wiring in accordance with the
wiring rules.
●Compare the mains voltage (~230 V, 50 Hz)
indicated on the nameplate with the supply
voltage before connecting to the mains.
●Before beginning work on live parts,
disconnect all of the systems circuits from the
power supply (switch off main switch,
disconnect fuse) and secure against uninten-
tional restart.
●Equipment covers and service panels must be
replaced as soon as the work is completed.
2.4.3 Working on cooling systems (heat
pump)
The DAIKIN EKHHP requires fluorinated green-
house gas for its function.
●Always wear safety goggles and protective
gloves.
●When working on the refrigerant circuit,
ensure that the workplace is well ventilated.
●Never carry out work on the refrigerant circuit
in closed rooms or work pits.
●Do not let coolant come into contact with open
fire, embers or hot objects.
●Never allow coolant to escape into the atmos-
phere (high pressure at the point of the leak).
●When removing the service pipes from the
filling connections, never hold the connections
in the direction of your body. Residual refrig-
erant could escape.
●If you suspect leaks in the refrigerant circuit:
Never pump the refrigerant back into the heat
pump external unit with the internal
compressor - always extract with a suitable
recycling unit and recycle it.
●Components and spare parts must at least
satisfy the technical requirements defined by
the manufacturer.
2.4.4 Site of installation
For safe and fault-free operation, it is necessary
that the installation location of the DAIKIN
EKHHP fulfils the safety-relevant criteria de-
scribed exactly in Section 4.3.
For work on stationary refrigeration sys-
tems (heat pumps) and air conditioning
systems, proof of expertise is required in
the European Community according to
the F-Gases Directive (EC) No.
303/2008.
– up to 3 kg coolant fill quantity: Expert certifi-
cate category II
– 3 kg coolant fill quantity or over: Expert cer-
tificate category I

Installation and operating instructions
6
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
2 xSafety
Information on the installation site of other com-
ponents can be found in the associated docu-
mentation supplied with them.
2.4.5 Sanitary connection
●You must comply with:
– EN 1717 - Protection of domestic water
from contamination in domestic water
installations and general requirements con-
cerning safety equipment for the prevention
of domestic water contamination by back-
flow
– EN 806 - Technical regulations for domes-
tic water installations (TRWI)
– and, as a supplement, the country-specific
legal requirements.
A safety valve must be fitted in the domestic
water feed to the DAIKIN EKHHP. There should
be no isolating fitting between the safety valve
and the DAIKIN EKHHP.
Any steam or heating water which may escape
must be diverted by a suitable blow-off line with
constant gradient in a frost-protected, safe and
observable manner.
The storage tank temperature can exceed 60 °C
if you connect a solar system.
●For this reason you should fit scalding
protection (e.g. VTA32 + Verschraubungsset
1") during installation.
2.4.6 Requirements for the depressurised
storage tank water
Observe the current technological regulations to
prevent corrosion products and deposits.
Minimum requirements regarding the quality
of filling and supplementary water:
– Water hardness (calcium and magnesium,
calculated as calcium carbonate):
≤3 mmol/l
– Conductivity: ≤1500 (ideal: ≤100) μS/cm
– Chloride: ≤250 mg/l
– Sulphate: ≤250 mg/l
– pH value: 6,5 - 8,5
Using filling water and top-up water which does
not meet the stated quality requirements can
cause a considerably reduced service life of the
equipment. The responsibility for this lies solely
with the operator.
2.4.7 Operation
The DAIKIN EKHHP
●Do not operate until all installation and
connection work is completed.
●Only operate with a completely full storage
tank (level indicator).
●Only connect with a pressure reducer on the
external water supply (supply line).
●Only operate the with the specified quantity of
coolant and the type of coolant specified.
●only operate if the protective cover is installed.
The specified servicing intervals should be ad-
hered to and inspection work must be carried
out.
2.4.8 Instructing the user/owner
●Before you hand over the DAIKIN EKHHP,
explain to the user/owner how to operate and
check the system.
●Provide the operator with the technical
documentation (this documentation and all its
references) and indicate that these
documents must be available in the
immediate vicinity of the unit at all times.
●Document the hand-over.
The domestic water quality must comply
with the EU Guideline 98/83 EC and the
regionaly-applicable regulations.
If an optional external heat generator is
connected via the corrugated pipe heat
exchanger of the EKHHP500AA2V3,
these minimum requirements also apply for the
filling and topping-up water of this heating
circuit.

3 xProduct description
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
7
3 Product description
15
17
Fig. 3-1 Structure of the DAIKIN EKHHP – legend see Tab. 3-1

Installation and operating instructions
8
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
3 xProduct description
Item Name (EKHHP) Item Name (Controller)
1 Flow Solar or flow for additional heat source (1" female thread) 30 Key "On / Off" 2 Cold water connection (1“ male thread) 31 Operating Display LED 3 Hot water (1“ male thread)* 32 Display operating mode "Low Noise Mode" active 4 Flow Solar or for additional heat source (3/4" female thread + 1“ male thread) (only
EKHHP500AA2V3)
33 Display operating mode "Hot Water Heating" active
5 Return Solar for additional heat source (3/4" female thread + 1“ male thread) (only
EKHHP500AA2V3)
34 Display of sensor number (see Tab. 7.1)
6 Connection refrigerant gas line Cu Ø 3/8" (9.5 mm) 35 Display time 7 Connection refrigerant liquid line Cu Ø 1/4" (6.4 mm) 36 Display weekday
7a Recommended accessory:non-return valves(2 pcs.) 37 Display refrigerant compressor active
9 Storage tank ( polypropylene double walled jacket with PUR hard foam heat insulation) 38 Display switching timer programme switched on
10 Filling and draining connection or return Solar or return for additional heat source 39 Display active switching times 11 Mount for solar controller or handle 40 Display off status in timer programme 12 Heat exchanger (stainless steel) for domestic hot water heating 41 Display Booster-Heater (BSH) switched on 13 Heat exchanger (stainless steel) for storage tank charging by hot water heat pump (liquifier) 42 Display external signal (HT/NT / Smart Grid) 14 Heat exchanger (stainless steel) for storage tank charging by pressurised solar or alternative heat gener-
ator (only EKHHP500AA2V3)
43 Display operating mode "Start-up", "Defrost Mode" active
15 Connection for integrated electrical Booster-Heater BSH (R 1½" female thread) 44 Display external temperature or temperature in hot water storage tank 17 Fill level indicator (tank water) 45 Display operating mode "Automatic" active 18 Integrated electrical Booster-Heater (BSH) 46 Display external temperature active 19 Sensor pocket for tank temperature sensor tDHW 47 Display of hot water temperature or oher temperature values (in combination with Items 44 / 46)
20 Pressure-free storage tank water 48 Display "Function not available" 23 Connection safety overflow 49 Display parameter setting mode active 24 Mount for handle 50 Display service technician required 25 Silencer hood 51 Display Parameter code or Fault code 26 Type plate 52 Keys setting hot water temperature 27 Regulator hot water heat pump 53 Key "Automatic" operating mode
54 Key programming
outer
thread
outer thread 55 Key "High Output" operating mode
inter-
nal
thread
internal thread 56 Key activation/deactivation of timer programme
tDHW Storage tank temperature sensor 57 Key "Low Noise" operating mode
Safety devices 58 Keys Time setting Observe tightening torque! 59 Key error code / parameter setting
Brief push: Display last error code Push for 5 sec: Enter parameter settings

4 xSet-up and installation
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
9
4 Set-up and installation
4.1 Tightening torque
4.2 Scope of delivery
– DAIKIN EKHHP
– Bag of accessories (see Fig. 4-1)
WARNING!
If you operate the DAIKIN EKHHP when the
storage tank is not completely full, damage to
the equipment may occur.
●Fill the DAIKIN EKHHP only after all the
hydraulic installation work has been
completed.
●Observe the sequence during the filling
process.
Commissioning only after all the installation
work has been completed and only after filling
the storage tank completely.
WARNING!
Cooling systems (heating pumps), climate
control systems and heating devices that have
been set up and installed incorrectly can both
endanger life and health of people and be im-
paired in their function.
●Work on the DAIKIN EKHHP (such as setup,
servicing, connection and initial start-up) is
only to be carried out by persons who are
authorised and who have successfully
completed qualifying technical or
vocational training and who have taken part
in advanced training sessions recognised by
the relevant responsible authorities for the
specific activity. These include in particular
certified heating engineers, qualified
electricians and HVAC specialists, who
because of their professional training and
expert knowledge, have experience in the
professional installation and maintenance of
heating, cooling and air conditioning systems
and heat pumps.
Component Thread
size
Tightening
torque
Hydraulic line connections (water) 1" 25 to 30 Nm
Liquid line connections
(Coolant)
1/4" 15 to 17 Nm
Gas line connections
(Coolant)
3/8" 33 to 40 Nm
Booster-Heater 1.5" max. 10 Nm
(hand-tight)
Tab. 4-1 Tightening torque
A Handles (only required for
transport)
B Cover screen
C Hose connection piece for
safety overflow
D Spanner
Fig. 4-1 Contents of bag of accessories
A(2x)
B(3x)
C(1x)
D(1x)

Installation and operating instructions
10
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
4 xSet-up and installation
4.3 Set-up ●Remove packing and dispose of it in an environment-friendly
manner.
●Remove the cover plates on the storage tank (Fig. 4-2,
Item B) and unscrew the threaded pieces (Fig. 4-2, Item F)
from the apertures on which the handles are to be mounted.
●Screw handles (Fig. 4-2, Item A) into the threaded holes that
are now free.
●Install the DAIKIN EKHHP at the installation site.
– Recommended distances:
To the wall (rear): ≥200 mm.
To the ceiling: ≥200 mm.
– Observe the tilt dimension (see Section 10).
– Carefully transport the DAIKIN EKHHP, use the handles.
– When setting up the unit in a cabinet, behind panels or in
other restricted conditions, sufficient ventilation (e.g.,
using ventilation gratings) must be ensured.
– To avoid a circulation line, install DAIKIN EKHHP close to
the draw-off location.
CAUTION!
●Only erect the DAIKIN EKHHP when a suffi-
cient ground load-bearing capacity, of
1050 kg/m² plus safety margin, has been
assured. The ground must be flat and level.
●Outdoor installation is not permitted.
●Erection in explosion-risk environments is
not permitted.
●The DAIKIN EKHHP must only be set up in
non-hermetically closed rooms.
●The electronic control system must not be
subjected to atmospheric factors under any
circumstances.
●The storage tank must not be exposed to
continuous direct sunlight, as the UV
radiation and the effects of the weather will
damage the plastic.
●The DAIKIN EKHHP must be installed in a
manner protected from frost.
●Make sure that the supply company does
not provide corrosive domestic water.
– Suitable water treatment may be
required.
WARNING!
The plastic wall of the storage tank of the
DAIKIN EKHHP can melt under the effects of
external heat 80 °C) and, in the extreme case,
can catch fire.
●Erect the DAIKIN EKHHP only at a minimum
distance of 1 m to other heat sources
(>80 °C) (e.g. electric heater, gas heater,
chimney) and flammable materials.
CAUTION!
If the DAIKIN EKHHP is not erected ade-
quately lower the flat solar panels (the top
edge of the of the storage tank is higher than the
bottom edge of the solar panels), the unpres-
surised solar system in the outdoor area will be
unable to drain completely.
●Erect the DAIKIN EKHHP with a DrainBack
solar connection at a sufficient depth to the
flat solar panels (observe the minimum
gradient in the solar connecting lines).
A Handle
B Cover screen
F Threaded piece
Fig. 4-2 Attach handles

4 xSet-up and installation
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
11
4.4 Hydraulic connection
Requirement: Optional accessories (e.g. Solar) mounted on the
DAIKIN EKHHP according to the specifications in the instructions
included with the delivery.
●Check the cold water connection pressure (maximum 6 bar).
– At higher pressure in the drinking water line, a pressure
reducer must be installed.
●When using circulation brakes, fit them into the pipe
connections on the DAIKIN EKHHP.
●Create hydraulic connections on the DAIKIN EKHHP (see
Fig. 4-5).
– Fig. 3-1 and Tab. 3-1 give the position and dimensions of
the connections.
–Pay attention to the stipulated tightening torque (see
Section 4.1).
– Design the lines as such that the sound attenuation cowl
can be applied without any problem following assembly.
–Water shortage protection: The temperature monitoring
of the controller safely switches off the DAIKIN EKHHP in
the event of a water shortage. No additional water short-
age protection is needed in the construction. Neverthe-
less, regular checking of the fill level is necessary in order
to ensure function as intended.
–Avoid damages caused by deposits and corrosion:
Observe the requirements for storage tank water (see
Section 2.4.6).
CAUTION!
If the DAIKIN EKHHP is connected to a cold
water line, where steel pipes are used, chips
can enter the special steel corrugated pipe heat
exchanger and remain there. This can lead to
contact corrosion damage and subsequently
to leakage.
●Flush the feed pipes before filling the heat
exchanger.
●Install contamination filter in the cold water
feed (see Section 2.4.5).
ONLY DAIKIN EKHHP500AA2V3
CAUTION!
If the heat exchanger for charging the pres-
surised solar system (see overview image on
Fig. 3-1, Items 4+5) has an external heating
unit (e.g. wood-burning boiler) connected to it,
an excessive flow temperature at these connec-
tions can damage or destroy the DAIKIN
EKHHP.
●The feed flow temperature of the external
heater should be limited to max. 95 °C.
●Remove the cover on the
DAIKIN EKHHP.
Fig. 4-3 Remove the protective
cover.
If the installation conditions require the hydraulic
connection to be directly upwards, the cover
hood can be cut out along the broken line.
Fig. 4-4 Creating the hood cut-out
WARNING!
There is a danger of scalding at hot water
temperatures over 60 °C. This is possible,
when solar energy is used, with a con-
nected external heating device, when the
Legionella protection is activated or when
the domestic hot water target temperature
is set higher than 60 °C.
●Install scald protection (hot water mixer
(e.g. VTA32).

Installation and operating instructions
12
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
4 xSet-up and installation
●Carefully insulate pipe lines against heat loss and so as to
avoid the formation of condensation (insulation thickness at
least 20 mm).
●Connect the drain hose to the connector for the safety
overflow (Fig. 4-6 to Fig. 3-1, Item 23).
– Use transparent drain hose (draining water must be visi-
ble).
– Connect the drain hose to an adequately dimensioned
waste water installation.
– Drain should not be lockable.
4.4.1 Optional: Connection of an external heat
generator
For support or as an alternative for heating by the heat pump you
can connect external heat generators (e.g. Solar, gas or oil boiler)
to the DAIKIN EKHHP.
The heat supplied by the external heat generator must be added
to the unpressurised storage tank water in the DAIKIN EKHHP
hot water storage tank.
●Carry out hydraulic connection in accordance with one of the
two following possibilities:
a) EKHHP(3/5)00AA2V3: unpressurised via
connections (solar infeed and solar return) of the hot
water tank
or
b) Only EKHHP500AA2V3: via the integrated
pressurised solar heat exchanger.
– Fig. 3-1 and Tab. 3-1 give the position and dimensions of
the connections.
– CArry out hydraulic system incorporation in accordance
with Fig. 4-5.
–Pay attention to the stipulated tightening torque (see
Section 4.1).
– Design the lines as such that the sound attenuation cowl
can be applied without any problem following assembly.
Fig. 4-5 Hydraulic connection - legend see Tab. 4-2
(Example EKHHP500AA2V3 with Solar and optional ex-
ternal heat generator)
1 Cold water connection
2 Hot water distribution network
3 Feed Solar or for other heat source*
4 Return Solar or for other heat source*
6Circulation
7 Customer's side: Check valve, return valve
7a Circulation brakes (2 in number) Recommended accessory
8a Feed Solar or for other heat source*
8b Return Solar or for other heat source*
9 Gas line (refrigerant)
10 Liquid line (refrigerant)
CW cold water
DHW
hot water
EKHHP
DAIKIN heat pump internal unit
EKSRPS4A
DAIKIN solar regulation and pump unit*
FLG FlowGuard - solar regulating valve with flow indicator*
ERWQ
DAIKIN Heat pump external unit
FLS FlowSensor - solar flow and feed temperature measurement
PKBoiler circulation pump*
PZCirculation pump*
SK Solar panel field*
SV Customer's side: Safety over-pressure valve
WEX External heat generator*
* Optional
Tab. 4-2 Legend for Fig. 4-5
Fig. 4-6 Installation of drain hose at safety overflow

4 xSet-up and installation
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
13
4.5 Laying coolant lines
●Check whether oil trap arc necessary.
– Required if DAIKIN EKHHP is not installed at ground level
with the heat pump exterior unit (Fig. 4-7, HO≥10 m).
– At least one oil trap arc must be installed every 10 m dif-
ference in height (Fig. 4-7, H = clearance from oil trap arc
to oil trap arc).
– Oil trap arc only required in gas line.
●Install lines with bending unit and an adequate clearance to
electrical lines.
●Only solder with light nitrogen flow (hard soldering only).
●Do not apply heat insulation to joins until after start-up (for
purposes of leakage search).
●Establish flange connections and connect to the units. (
Pay attention to the tightening torque, see Section 4.1).
4.6 Pressure test and filling the coolant circuit
●Perform pressure test with nitrogen.
– Use nitrogen 4.0 or higher.
– Maximum 40 bar.
●After leak search is complete, completely drain.
●Evacuate the lines (see installation instructions of the heat
pump external unit).
●Open stop valve on exterior unit completely until the stop.
Tighten loosely.
●Reassemble valve caps.
A DAIKIN EWQ
B DAIKINEKHHP
C Gas line
D Liquid line
E Oil trap arc
H height to 1st oil trap (max. 10 m)
HOHeight difference between heat pump exterior unit and heat pump
interior unit.
Fig. 4-7 Oil trap arc coolant line
H
E
B
C
D
Ho
A
RISK OF ENVIRONMENTAL
DAMAGE!
Important information regarding the coolant
used.
The complete heat pump system contains re-
frigerant with fluorinated greenhouse gases
which damage the environment if released.
Coolant type: R410A
GWP* value: 2087,5
* GWP = Global Warming Potential
●Work on fixed cooling systems (heat pumps)
and air-conditioning systems can only be
performed by persons who hold a certificate
of competence for the European Region, in
accordance with the F-Gas Regulation (Ec)
No. 303/2008.
●Fill in the total coolant filling quantity on the
supplied lable on the heat pump exterior unit
(for information consult the installation
instructions for the heat pump exterior unit).
●Never allow coolant to be released into the
atmosphere - always suction it off and recycle
using a suitable recycling device.
No additional coolant is required for the basic filling.
This is independent of the line length between the in-
ternal unit and external unit.

Installation and operating instructions
14
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
4 xSet-up and installation
4.7 Filling the system with water
Observe the information on the water connection and water
quality in accordance with Chap. 2.4.5 and 4.4.
4.7.1 Filling the hot water heat exchanger
1. Open the shutoff valve for the cold water supply pipe.
2. Open the hot water tap connections so that the draw-off
volume can be set as high as possible.
3. Once water has been discharged from the tap connections,
do not interrupt the cold water flow; this will ensure that the
heat exchanger will be fully vented and that any impurities or
residue will be discharged.
4.7.2 Filling the storage tank
See Section 9.2.
4.8 Electrical connection
– Network connections need to be executed as independent
power circuits.
– Ensure power cables, sensor cables and data bus cables are
laid separately from each other.
– Use only cable trunking with separate trays or cable trunking
with separators that ensure at least 2 cm spacing.
– Cable cross-overs are not permissible.
– For all the cables connected to the DAIKIN EKHHP effective
tension relief must be ensured in the controller housing using
cable ties (see Figures 4-8 to 4-10).
WARNING!
If you operate the DAIKIN EKHHP when the
storage tank is not completely full, damage to
the equipment may occur.
●Fill the DAIKIN EKHHP only after all the
hydraulic installation work has been
completed.
●Observe the sequence during the filling
process.
●Commissioning only after all the installation
work has been completed and only after
filling the storage tank completely.
The corrugated pipe heat exchangers must be filled
before the storage tank.
The heat exchanger for connecting an optional heat
generator (Fig. 3-1, Item 14, only EKHHP500AA2V3) also
needs to be filled if no optional heat generator is connected to it.
This heat exchanger, and the heating circuit of the external heat
generator connected to it, should be filled first.
UK only! CAUTION!
If filling or topping up the storage tank is done by
means of the boiler filling and drain valve, a
temporary filling loop must be used with the
appropriate backflow prevention device in
accordance with clause G24.2, Guidance to the
Water Supply (Water Fittings) Regulations
1999.
WARNING!
Touching live parts can result in an electric
shock and lead to potentially fatal injuries and
burns.
●Before beginning work on live parts,
disconnect all of the systems circuits from
the power supply (switch off main switch,
disconnect fuse) and secure against uninten-
tional restart.
●The electrical connection and working on the
electrical components should only be
performed by qualified electrical engineers
in compliance with valid standards and
guidelines as well as the specifications of the
energy supply company and the instructions
given in this manual.
●Never carry out any structural changes to
plug sockets or other electrical equipment
components.
●The equipment covers and maintenance
opening covers must be re-fitted immedi-
ately after completion of the work.
CAUTION!
In the controller housing of the DAIKIN
EKHHP, in continuous running, elevated tem-
peratures can be generated. This can result in
currently-carrying wires from reaching higher
temperatures during operation due to self-
heating. For this reason, these lines need to
have a continuous use temperature of 90 °C.
●For the following connections, use only
cables with a long-term use temperature
≥90 °C:
– Exterior heat pump unit
– Voltage supplyBooster-Heater
– Contacts (connection HT/NT/Smart Grid)

4 xSet-up and installation
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
15
4.8.1 Connection EKHHP on heat pump external unit,
mains connection Booster-Heater (BSH)
●Check the supply voltage (~230 V, 50 Hz).
●Disconnect the junction box of the domestic installation.
●Install the heat pump external unit.
●Lay the mains and communication cable (4 core, 0.75 mm²)
between heat pump external unit and DAIKIN EKHHP.
●Connect mains and communication cable to heat pump
external unit (see relevant installation instructions).
●Connect DAIKIN EKHHP to the heat pump external unit (see
Fig. 4-11).
●Lay the cable (3 core, >1.5 mm²) for the power supply to the
Booster Heater between distributor box of the house instal-
lation and the DAIKIN EKHHP.
●Connect the cable for power supply on the Booster Heaters to
the DAIKIN EKHHP (see Fig. 4-11).
●Connect the cable for power supply to the Booster Heater on
the distributor box of the house installation (see Fig. 4-11).
4.8.2 High/low tariff mains connection (HT/NT)
if the external unit is connected to a high/low tariff mains con-
nection, the potential-free switch contact HT/NT of the receiver
that evaluates the signal emitted by the electrical supply
company (EVU) (i.e. the HT/NT signal) must be connected to the
connections GND/IN1 of the DAIKIN EKHHP (see Fig. 4-12).
When the parameter [7-00] > 0 is set, certain system compo-
nents are switched off in high tariff times (see Section 7.5).
The potential-free switching contact GND/IN1 can be designed
as a normally-closed or a normally-open switching contact.
a) If it is configured as a normally-open switching contact,
then the parameter [7-00] = 1 must be set.
When the EVU sends out the HT/NT signal, the switching
contact HT/NT is closed. The installation switches to
"Reduced Mode". If the signal is sent again, the potential-free
switching contact HT/NT opens and the system resumes
operation.
b) If it is configured as a normally-closed switching contact,
then the parameter [7-00] = 2 must be set.
When the EVU sends out the HT/NT signal, the switching
contact HT/NT is opened. The installation switches to
"Reduced Mode". If the signal is sent again, the potential-free
switching contact HT/NT closes and the system resumes
operation.
Fig. 4-8 Tension relief using cable ties
Fig. 4-9 Click the holding clip in place and retain the cables with the ca-
ble ties
Fig. 4-10 Check the holding force of the tension relief
ERWQ02AAV3 Exterior heat pump unit
X1M Terminal rail on EKHHP
Fig. 4-11 Mains connectionDAIKINEKHHP
When switching off the heat pump external unit using a
switching system prescribed by the energy supply com-
pany (EVU), the DAIKIN EKHHP is switched off as well.
This complete switch-off of the heat pump external unit is an op-
tional installation and must only be carried out by experts.

Installation and operating instructions
16
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
4 xSet-up and installation
4.8.3 Connection EVU receiver (intelligent regulator
Smart Grid - SG)
Once the function is activated by the parameter [7-00] = 3 (see
Section 7.5.2), the heat pump is changed to Stand-By, Normal or
an operating mode with higher temperatures, depending on the
signal from the energy supply company.
To do this, the potential-free switchinf contacts HT/NT + SG of
the EVU receiver need to be connected to the terminal rail con-
nections (GND+IN1) / (GND+IN2) of the DAIKIN EKHHP (see
Fig. 4-12).
As soon as the function Smart Grid is active, the HT/NT function
is deactivated automatically. Depending on the value of the pa-
rameter [7-00], the heat pump is operated differently (see
Tab. 7-3).
4.8.4 Optional: Connection of an external heat
generator
When using an external heat generator, this can be connected
using a potential-free switching contact (HT/NT) on the DAIKIN
EKHHP.
If the potential-free switching contact is closed by an external
heat generator, the DAIKIN EKHHP reduces its own heat gener-
ation in order to favour the external heat generator (settings see
Section 7.5.2).
HT/NT High/low tariff mains connection (EVU receiver)
SG Smart Grid connection (EVU receiver)
GND+IN1 connection HT/NT switching contact on EKHHP
GND+IN2 connection Smart Grid switching contact on EKHHP
X2M Terminal rail on EKHHP
Fig. 4-12 Electrical connection HT/NT - and Smart Grid switching con-
tact
GND + IN1 connection potential-free switching contact on EKHHP
WEX External heat generator
X2M Terminal rail on EKHHP
Fig. 4-13 External heat generator electrical connection

5 xStart-up
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
17
5 Start-up
5.1 Start-up
5.1.1 Requirements:
– The DAIKIN EKHHP system is set up and completely con-
nected.
– The coolant system is dehumidified and filled with the speci-
fied amount of coolant.
– The hot water distribution network is bled and has the correct
pressure applied (see Section 4.7).
– The storage tank is filled up to the overflow (see Section 9.2).
– Optional accessories have been mounted on and connected
up.
After the DAIKIN EKHHP was installed and connected com-
pletely, it will need to be undergo a one-time adaptation to the in-
stallation environment to be carried out by technical personnel
(configuration of optional accessories, setting the parameters).
After this configuration is complete, the installation is ready for
operation and the operator can make additional custom configu-
rations on it.
The heating expert must instruct the user, generate the commis-
sioning report and fill it in.
5.1.2 Start the system
●Check all the points on the enclosed checklist. Document the
test result.
●Switch on the power supply at the distributor box of the house
installation for the DAIKIN hot water heat pump.
●Switching DAIKIN EKHHP on.
●Perform a test run:
– Allow the temperatures to be displayed (see
Section 7.2.3).
– Test the hot water generation function. Select a higher set
hot water temperature so that the heating function is acti-
vated (see Section 7.3.1).
●Sign the check list, together with the operator.
Only if it is possible to answer all items on the check list by Yes,
is it allowed to commission and hand over the DAIKIN hot water
heat pump to the operator.
WARNING!
A DAIKIN EKHHP that is installed or started in-
correctly may not operate properly and is dan-
gerous for the health and safety of individuals.
The DAIKIN hot water heat pump may only be
started up by authorised and trained heating ex-
perts.
CAUTION!
A DAIKIN EKHHP not put into operation
properly can lead to damage to property and the
environment.
●Observe the relevant regulations of
technology to prevent creation of corrosion
products and deposits. Minimum require-
ments regarding the quality of filling and
supplementary water:
– Water hardness (calcium and magnesium,
calculated as calcium carbonate):
≤3 mmol/l
– Conductivity: ≤1500 (ideal: ≤100) μS/cm
– Chloride: ≤250 mg/l
– Sulphate: ≤250 mg/l
– pH value: 6.5 - 8.5.
●If the above-mentioned minimum water
quality requirements set by the local water
supply company cannot be guaranteed,
suitable water treatment measures must be
taken.
●The domestic water quality must comply with
the EU Guideline 98/83 EC and the
regionaly-applicable regulations.
CAUTION!
If the DAIKIN EKHHP is started when the
storage tank is not completely full a reduction
in output may arise when heating, or to
destruction of the integrated Booster Heater
(BSH) and may cause an electrical fault.
●DAIKIN EKHHP only to be operated with full
storage tank.

Installation and operating instructions
18
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
5 xStart-up
Check list for start-up
1st. DAIKIN EKHHP erected in accordance with the requirements and instructions in Section 4 and shows no
damage?
Yes
2. Minimum distance between the DAIKIN EKHHP and other sources of heat (>80 °C) of 1 m? Yes
3. Booster-Heater:
– Does the mains connection comply with the regulations and is the mains voltage 230 volts at 50 Hz?
– Has the residual current device been fitted in accordance with the individual country-specific regulations?
Yes
Yes
4. Is the heat exchanger for domestic hot water heating in the DAIKIN EKHHP full and has it been bled? Yes
4.1 Only EKHHP500AA2V3: Is the heat exchanger filled for the connection of an optional heat generator? Yes
5. Is the storage tank full with water to the overflow point? Yes
6. Is the safety overflow connection connected to an open drain? Yes
7. Is the water pressure on the sanitary side < 6 bar? Yes
8. Are all hydraulic connections tight (no leaks)? Yes
9. Have the parameters been set on the controller in accordance with the structural conditions, possibly connected
accessories and the user stipulations?
Yes
10. Is the parameter [7-02] set to the value 0? Yes
11. Does the installation operate without faults? Yes
12. Has the operating manual been handed over, and has the owner been instructed? Yes
Location and
Date:
Signature of installer:
Signature of operator:

6 xDecommissioning
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
19
6 Decommissioning
6.1 Temporary shutdown
If the DAIKIN EKHHP is not needed for a long time, it can be tem-
porarily decommissioned.
However, DAIKIN recommends not disconnecting the system
from the power supply, but just switching it off (actuate button
).
The system is then protected from frost.
If it is not possible to guarantee the power supply when there is
danger of frost,
– the DAIKIN EKHHP must be fully drained of water.
6.1.1 Draining the storage tank
●DAIKIN Disconnect the EKHHP from the power supply.
●Remove connection piece (Fig. 6-1, Item C) from safety
overflow (Fig. 6-1, Item B).
●Connect the drain hose to the hose connection piece (Item C)
and to a waste water drainage point which is at least at
ground level.
●Place a suitable collection trough beneath the filling and
emptying fitting.
●Unscrew the threaded piece (Fig. 6-3, Item E) at the filling
and draining connection, and remove the plug (Fig. 6-3, Item
F) and immediately screw in the pre-assembled hose
connector (Fig. 6-1, Item C) into the filling and draining
connection (Fig. 6-3) again.
WARNING!
Danger of scalding and flooding when
opening the solar return flow coupling or hot
water connections due to escaping hot water.
●Draining the storage tank only
– after it has cooled down for a longe nough
period,
– with a suitable device for the safe draining
or catching of escaping water,
– wearing appropriate protective clothing.
CAUTION!
A shutdown hot water heat pump can freeze in
the event of frost and may suffer damage as a
result.
●Drain the water out of the shutdown hot water
heat pump if there is a risk of frost.
●If the hot water heat pump is not drained and
there is a risk of frost, the power supply must
be ensured and the external main switch
must remain switched on.
If there is a danger of frost and the power supply cannot
be guaranteed for just a few days, the unit's excellent
heat insulation means that the DAIKIN EKHHP does
not have to be drained, provided that the storage tank
temperature is monitored regularly and does not fall
below +3 °C.
However, this does not provide frost protection for the con-
nected heat distribution system.
Alternatively, you can use the optional KFE filling
connection (KFE BA).
B Safety overflow C Hose connection piece for
safety overflow
E Threaded piece
Fig. 6-1 Connecting the drain-
age hose
Optional: Removing the connec-
tion piece from the safety overflow
●Remove the cover plate
from the filling and
emptying fitting.
Fig. 6-2 Unscrew threaded piece
CAUTION!
Storage water will gush out as soon as the
sealing plug is removed.
There is no valve and no non-return flap on the
filling and draining connection.
E

Installation and operating instructions
20
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
6 xDecommissioning
6.1.2 Draining the hot water circuit
●Close the cold water supply to the DAIKIN EKHHP.
●Separate the cold water supply pipe to the DAIKIN EKHHP
and allow the hot water distribution network to empty out.
●Isolate the cold water supply and hot water outlet from the
DAIKIN EKHHP.
●Connect the drain hoses to cold water supply and hot water
outlet so that the end of the hose is located just above ground
level.
●Allow heat exchanger to drain according to the siphon
principle.
6.2 Final shutdown
A final shutdown may be necessary if
– the system is defective and is being dismantled and disposed
of.
– components of the system are defective, are being disman-
tled and replaced.
– the system or parts of the system are being dismantled and
reassembled in another location.
The DAIKIN EKHHP is designed to be environmentally friendly
and easy to install: the jobs described above can therefore be
carried out in an efficient and environmentally-friendly manner.
When changing location or replacing parts on the coolant system
pipework:
●Pump the coolant back into the external heat pump unit (see
installation and operating guide for the particular external
heat pump unit).
When disposing of the machine or replacing parts in the coolant
system:
●Suction the coolant from the machine and recycle (see instal-
lation and operating guide for the particular external heat
pump unit).
Fig. 6-3 Screwing pre-assembles connector into the filling and drain-
ing connection
WARNING!
Cooling systems (heat pumps), climate control
systems and heating devices that are incorrectly
dismantled can both endanger the life and
health of people and exhibit impaired function
during start-up.
At normal atmospheric pressure and ambient
temperatures, liquid coolant vapourises so
suddenly that on contact with skin or eyes it
can cause the tissue to freeze (danger of going
blind).
●Work on the DAIKIN EKHHP (such as
dismantling components, temporary or final
shutdown of system) is only to be carried out
by persons who are authorised and who have
successfully completed qualifying technical
or vocational training for the specific
activity and who have taken part in advanced
training sessions recognised by the relevant
responsible authorities. These include, in
particular, certified heating engineers,
qualified electricians and HVAC
specialists, who on account of their profes-
sional training and expert knowledge,
have experience in the professional instal-
lation and maintenance of heating, cooling
and air conditioning systems and heat
pumps.
●You must observe the warning and safety
instructions in the installation manual on
working in the coolant system.