Daikin EKHHP300AA2V3, EKHHP500AA2V3 Installation manuals
Installation and operating
instructions
Hot water heat pump
(indoor unit)
Installation and operating instructions
Hot water heat pump
(indoor unit)
English
EKHHP300AA2V3
EKHHP500AA2V3
List of contents
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
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
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
Installation and operating instructions
2
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423449_05 – 08/2016
1 x Particular instructions for safe operation
1 Particular instructions for safe operation
1.1 Particular safety instructions
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 understand 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 consideration 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 electrocution 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).
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 configured 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.
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
3
2 x Safety
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.
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.
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.
2.1.3 Handling instructions
● Instructions on actions are shown as a list.
Actions of which the sequential order must be
maintained are numbered.
Results of actions are identified with an
arrow.
2.2 Avoid danger
The DAIKIN EKHHP is state-of-the-art and is
built to meet all recognised technical requirements. However, improper use can lead to serious injuries or death, as well as causing material 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 symbol identifies user tips and particularly useful information, but not
warnings or hazards.
Special warning signs
Some types of danger are represented by
special symbols:
Electric power
Risk of burning or scalding
Risk of environmental damage
2.1.2 Validity
Some information in this manual has limited validity. The validity is highlighted by a symbol.
Exterior heat pump unit
This assumes knowledge and use of the contents of this manual, the relevant accident prevention regulations and the recognised safetyrelated 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:
External unit Internal unit
EKHHP300AA2V3
ERWQ02AAV3
EKHHP500AA2V3
Tab. 2-1 Permissible combinations of DAIKIN EKHHP internal units and
DAIKIN heat pump external units
Installation and operating instructions
4
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
2 x Safety
Any other use outside the intended use is considered 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 requirements 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 appropriate 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 incorporated 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 unintentional 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 greenhouse gas for its function.
For work on stationary refrigeration systems (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
● 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 atmosphere (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 refrigerant 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 described exactly in Section 4.3.
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
5
2 x Safety
Information on the installation site of other components can be found in the associated documentation 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 concerning safety equipment for the prevention
of domestic water contamination by backflow
– 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.
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.
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.
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 adhered to and inspection work must be carried
out.
● For this reason you should fit scalding
protection (e.g. VTA32 + Verschraubungsset
1") during installation.
The domestic water quality must comply
with the EU Guideline 98/83 EC and the
regionaly-applicable regulations.
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
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.
Installation and operating instructions
6
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
3 Product description
3 x Product description
17
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
15
Fig. 3-1 Structure of the DAIKIN EKHHP – legend see Tab. 3-1
Installation and operating instructions
7
3 x Product description
33 Display operating mode "Hot Water Heating" active
34 Display of sensor number (see Tab. 7.1)
43 Display operating mode "Start-up", "Defrost Mode" active
Brief push: Display last error code
Push for 5 sec: Enter parameter settings
47 Display of hot water temperature or oher temperature values (in combination with Items 44 / 46)
DHW
54 Key programming
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
Item Name (EKHHP) Item Name (Controller)
Installation and operating instructions
4 Flow Solar or for additional heat source (3/4" female thread + 1“ male thread) (only
8
EKHHP500AA2V3)
EKHHP500AA2V3)
5 Return Solar for additional heat source (3/4" female thread + 1“ male thread) (only
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
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
7a Recommended accessory:non-return valves(2 pcs.) 37 Display refrigerant compressor active
12 Heat exchanger (stainless steel) for domestic hot water heating 41 Display Booster-Heater (BSH) switched on
ator
(only EKHHP500AA2V3)
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-
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
20 Pressure-free storage tank water 48 Display "Function not available"
18 Integrated electrical Booster-Heater (BSH) 46 Display external temperature active
19 Sensor pocket for tank temperature sensor t
outer thread 55 Key "High Output" operating mode
internal thread 56 Key activation/deactivation of timer programme
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
outer
thread
inter-
nal
thread
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
DHW
t
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
4 Set-up and installation
4 x Set-up and installation
4.1 Tightening torque
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 impaired in their function.
Component Thread
size
Hydraulic line connections (water) 1" 25 to 30 Nm
Liquid line connections
(Coolant)
Gas line connections
(Coolant)
Booster-Heater 1.5" max. 10 Nm
Tab. 4-1 Tightening torque
1/4" 15 to 17 Nm
3/8" 33 to 40 Nm
Tightening
torque
(hand-tight)
4.2 Scope of delivery
– DAIKIN EKHHP
– Bag of accessories (see Fig. 4-1)
C (1x)
D (1x)
A (2x)
B (3x)
● 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.
A Handles (only required for
transport)
B Cover screen
Fig. 4-1 Contents of bag of accessories
C Hose connection piece for
D Spanner
safety overflow
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
9
4 x Set-up and installation
4.3 Set-up
CAUTION!
● Only erect the DAIKIN EKHHP when a sufficient 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.
● 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.
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 unpressurised 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
Fig. 4-2 Attach handles
● 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.
F Threaded piece
Installation and operating instructions
10
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
4 x Set-up and installation
4.4 Hydraulic connection
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 pressurised 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 connections can damage or destroy the DAIKIN
EKHHP.
● The feed flow temperature of the external
heater should be limited to max. 95 °C.
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.
● Remove the cover on the
DAIKIN EKHHP.
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
–
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.
WARNING!
There is a danger of scalding at hot water
temperatures over 60 °C. This is possible,
when solar energy is used, with a connected 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).
– 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 shortage protection is needed in the construction. Nevertheless, 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).
Fig. 4-3 Remove the protective
cover.
● 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.
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
11
4 x Set-up and installation
● 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.
Fig. 4-5 Hydraulic connection - legend see Tab. 4-2
(Example EKHHP500AA2V3 with Solar and optional external 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*
6 Circulation
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
WEXExternal heat generator*
Fig. 4-6 Installation of drain hose at safety overflow
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:
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.
via the integrated
* Optional
Tab. 4-2 Legend for Fig. 4-5
● Carefully insulate pipe lines against heat loss and so as to
avoid the formation of condensation (insulation thickness at
least 20 mm).
Installation and operating instructions
12
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
4 x Set-up and installation
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, H
– 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).
B
E
A
C
≥ 10 m).
O
4.6 Pressure test and filling the coolant circuit
RISK OF ENVIRONMENTAL
DAMAGE!
Important information regarding the coolant
used.
The complete heat pump system contains refrigerant 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.
Ho
H
D
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
No additional coolant is required for the basic filling.
This is independent of the line length between the internal unit and external unit.
● 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.
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
Installation and operating instructions
13
4 x Set-up and installation
4.7 Filling the system with water
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.
4.8 Electrical connection
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 unintentional 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.
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.
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.
CAUTION!
In the controller housing of the DAIKIN
EKHHP, in continuous running, elevated temperatures can be generated. This can result in
currently-carrying wires from reaching higher
temperatures during operation due to selfheating. 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)
– 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).
Installation and operating instructions
14
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016
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