Daikin EKSOLHWAVJU User manual

INSTALLATION AND
OPERATION MANUAL
EKSOLHWAVJU
Solar kit for air to water heat pump system

4.4 inch
(112 mm)
1
EKHW*050+080*
6
6
6
6
7
7
7
7
5
5
8
11
11
10
2
4
3
12
0.75 inch
(19 mm)
A
A
1

EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Installation and operation manual
1
C
ONTENTS
Page
Introduction........................................................................................1
General information.....................................................................1
Scope of this manual...................................................................1
Model identification ..................................................................... 2
Safety considerations ........................................................................2
General system setup and operation................................................. 3
General system setup .................................................................3
Requirements and recommendations concerning field supplied
solar panels and solar pump station ...........................................3
Accessories .......................................................................................5
Accessories supplied with the solar kit........................................5
Overview of the solar kit ....................................................................5
Main components........................................................................ 5
Installation of the solar kit ..................................................................6
Selecting an installation location .................................................6
Dimensions and service space ...................................................6
Installation guidelines.................................................................. 6
Installing the solar kit...................................................................6
Field wiring .................................................................................. 8
Start up............................................................................................12
Operating instructions...................................................................... 12
Configuring your system ...........................................................12
Troubleshooting and servicing .........................................................14
General guidelines .................................................................... 14
General symptoms .................................................................... 14
Error codes................................................................................14
Disposal requirements.....................................................................14
Technical specifications ...................................................................15
Annexes...........................................................................................15
Decision flow of heating the domestic water by heat pump or by
solar kit...................................................................................... 15
Decision flow of heating the domestic water by booster heater..... 16
The English text is the original instruction. Other languages are
translations of the original instructions.
This appliance is not intended for use by persons, including children,
with reduced physical, sensory or mental capabilities, or lack of
experience and knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a person
responsible for their safety.
Children should be supervised to ensure that they do not play with
the appliance.
I
NTRODUCTION
General information
The solar kit must be installed by a licensed technician and in
compliance with the instructions in this manual.
The solar kit is to be connected to the EKHW* domestic hot water
tank.
The solar kit will enable you to heat up your domestic water by means
of the sun whenever the sun is available.
To get the most comfort and energy savings out of your system,
make sure to observe the section "Configuring your system" on
page 12 of this manual.
Scope of this manual
This installation manual describes the procedures for installing and
operating the EKSOLHWAVJU solar kit.
EKSOLHWAVJU
Solar kit for air to water heat pump system
Installation and
operation manual
READ THESE INSTRUCTIONS CAREFULLY BEFORE
INSTALLATION. KEEP THIS MANUAL IN A HANDY
PLACE FOR FUTURE REFERENCE.
IMPROPER INSTALLATION OR ATTACHMENT OF
EQUIPMENT OR ACCESSORIES COULD RESULT IN
ELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OR
OTHER DAMAGE TO THE EQUIPMENT. BE SURE ONLY
TO USE ACCESSORIES MADE BY DAIKIN WHICH ARE
SPECIFICALLY DESIGNED FOR USE WITH THE
EQUIPMENT AND HAVE THEM INSTALLED BY A
PROFESSIONAL.
ALL ACTIVITIES DESCRIBED IN THIS MANUAL SHALL
BE CARRIED OUT BY A LICENSED TECHNICIAN.
BE SURE TO WEAR ADEQUATE PERSONAL PROTEC-
TION EQUIPMENT (PROTECTION GLOVES, SAFETY
GLASSES, ...) WHEN PERFORMING INSTALLATION,
MAINTENANCE OR SERVICE TO THE UNIT.
IF UNSURE OF INSTALLATION PROCEDURES OR USE,
ALWAYS CONTACT YOUR DAIKIN DEALER FOR ADVICE
AND INFORMATION.
THE UNIT DESCRIBED IN THIS MANUAL IS DESIGNED
FOR INDOOR INSTALLATION ONLY AND FOR AMBIENT
TEMPERATURES RANGING 39°F~95°F (4°C~35°C).
Before operating the unit, make sure the installation has
been carried out correctly by a professional Daikin dealer.
If you feel unsure about operation, contact your Daikin
dealer for advice and information.

Installation and operation manual
2
EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Model identification
S
AFETY CONSIDERATIONS
The precautions listed here are divided into the following four types.
They all cover very important topics, so be sure to follow them
carefully.
Danger
■ Before touching electric terminal parts, turn off power switch.
■ When service panels are removed, live parts can be easily
touched by accident.
Never leave the unit unattended during installation or servicing
when the service panel is removed.
■ Do not touch water pipes during and immediately after operation
as the pipes may be hot. Your hand may suffer burns. To avoid
injury, give the piping time to return to normal temperature or be
sure to wear proper gloves.
■ Do not touch any switch with wet fingers. Touching a switch with
wet fingers can cause electrical shock.
■ Before touching electrical parts, turn off all applicable power
supply.
Warning
■ Tear apart and throw away plastic packaging bags so that
children will not play with them.
Children playing with plastic bags face danger of death by
suffocation.
■ Safely dispose of packing materials. Packing materials, such as
nails and other metal or wooden parts, may cause stabs or other
injuries.
■ The piping between solar panels, solar pump station and solar
kit shall be copper piping and properly insulated. The piping can
reach the same temperature as the maximum allowable solar
panel temperature.
■ The piping between heating circuit and solar kit connection shall
be copper piping, at least 1.64 ft (0.5 m) long and properly
insulated.
Due to heat conduction, the piping can become very hot.
■ Do not touch the internal parts (pump, etc.) during and
immediately after operation.
Your hands may suffer burns if you touch the internal parts. To
avoid injury, give the internal parts time to return to normal
temperature or, if you must touch them, be sure to wear proper
gloves.
■ Make certain that all electrical work is carried out by qualified
personnel according to the local laws and regulations and this
installation manual, using a separate circuit.
Insufficient capacity of the power supply circuit or improper
electrical construction may lead to electric shocks or fire.
■ Make sure that all wiring is secure, using the specified wires and
ensuring that external forces do not act on the terminal
connections or wires.
Incomplete connection or fixing may cause a fire.
Caution
■ Ground the unit.
Grounding resistance should be according to local laws and
regulations.
Do not connect the ground wire to gas or water pipes,
lightning conductor or telephone ground wire.
Incomplete grounding may cause electric shocks.
■ Gas pipe.
Ignition or explosion may occur if the gas leaks.
■ Water pipe.
Hard vinyl tubes are not effective grounds.
■ Lightning conductor or telephone ground wire.
Electric potential may rise abnormally if struck by a lightning
bolt.
■ Install the power wire at least 3.28 ft (1 meter) away from
televisions or radios to prevent image interference or noise.
(Depending on the radio waves, a distance of 3.28 ft (1 meter)
may not be sufficient to eliminate the noise.)
■ Do not rinse the unit. This may cause electric shocks or fire.
■ Do not install the unit in places such as the following:
■ Where there is mist of mineral oil, oil spray or vapour.
Plastic parts may deteriorate, and cause them to fall out or
water to leak.
■ Where corrosive gas, such as sulphurous acid gas, is
produced.
Corrosion of copper pipes or soldered parts may cause water
to leak.
■ Where there is machinery which emits electromagnetic
waves.
Electromagnetic waves may disturb the control system, and
cause malfunction of the equipment.
■ Where flammable gases may leak, where carbon fibre or
ignitable dust is suspended in the air or where volatile
flammables, such as thinner or gasoline, are handled.
Such gases may cause a fire.
■ Where the air contains high levels of salt.
■ Where voltage fluctuates a lot, such as that in factories.
■ In vehicles or vessels.
■ Where acidic or alkaline vapour is present.
EK SOL HW AVJU
VJU = 2~, 208/230 V 60 Hz
Series
Domestic hot water
Solar kit
Kit
Meanings of DANGER , WARNING , CAUTION and NOTE symbols.
DANGER
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury. It may also
be used to alert against unsafe practices.
NOTE
Indicates situations that may result in equipment or
property-damage accidents only.

EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Installation and operation manual
3
G ENERAL SYSTEM SETUP AND OPERATION
General system setup
The solar kit is designed to transfer the heat from the solar panels to
the heat exchanger of the domestic hot water tank EKHW* and is to
be installed in the system as shown in the scheme below.
The solar panels (1) catch the heat of the sun. When the temperature
of the glycol solution in the solar panel has become higher than the
water temperature in the domestic hot water tank, the pump of the
solar pump station (2) and the pump of the solar kit (3) start to
operate as to transfer the heat to the heat exchanger of the domestic
hot water tank, unless priority is given to the heat pump. Refer to
"Operating instructions" on page 12 (subsection: Configuring your
system).
Requirements and recommendations concerning field
supplied solar panels and solar pump station
Solar panel
Appropriate selection is to be made by your solar panel
supplier, in accordance with local laws and regulations.
Solar pump station
The solar pump station must meet following requirements:
Electrical connection
The solar pump station will have an auxiliary contact that
closes when the contact for the pump of the solar pump
station is operated.
This contact will provide the input towards the indoor unit,
and prevent domestic water heating by the heat pump
and/or booster heater during solar heating.
For wiring examples, refer to the following drawings.
Example
Settings
■ Maximum solar panel temperature
If the temperature of the solar panel is above this value,
the solar pump station will stop or not resume pump
operation.
This setting will have a fixed value equal to or below
212°F (100°C) , or it will be possible to put this value
equal to or below 212°F (100°C).
1 Solar panels (field supply)
2 Solar pump station (field supply)
3 Solar kit
4 Domestic hot water temperature sensor of the solar pump station
(field supply)
5 Domestic hot water temperature sensor of the indoor unit
6 Solar panel temperature sensor (field supply)
7 Non-return valve (to be included in solar pump station or to be
installed in field piping)
8 The piping between heating circuit and solar kit connection shall
be copper piping and properly insulated to avoid possible injuries.
Heating system.
Refer to the indoor unit installation manual.
M
1
88
23
4
5
6
78
≥1.64 ft (0.5 m)
Cu
Cu
Cu
Cu
CAUTION
Field wiring
Solar pump station
Indoor: X7M
WARNING
■ The piping between solar panels, solar
pump station and solar kit shall be
copper piping and properly insulated.
The piping can reach the same
temperature as the maximum allowable
solar panel temperature.
■ The piping between heating circuit and
solar kit connection shall be copper
piping, at least 1.64 ft (0.5 m) long and
properly insulated.
Due to heat conduction, the piping can
become very hot.
■ As the piping can become warmer than
123°F (51°C), all piping shall be properly
insulated to avoid any possible (injury)
burn.
■ All used parts shall withstand the
minimum technical specifications
mentioned under "Technical
specifications" on page 15.
56
Indoor: X7M
R1 N
P
Solar pump station

Installation and operation manual
4
EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Also refer to the eye-catcher caution label that was torn
up when unpacking the installation manual.
Limiting the maximum solar panel temperature to 212°F
(100°C) however, can affect efficiency of the solar
panel.
But on the other hand:
■ as it is important for reliability of the pump in the
solar pump station only that temperature of the
return water to that solar pump is lower than 212°F
(100°C);
■ and in case the 212°F (100°C) limit for the return
water temperature to the solar pump can be
guaranteed by other means than by limiting the
'Maximum solar panel temperature';
then the value of the 'Maximum solar panel
temperature' can be set to a higher temperature.
Please contact your local solar panel dealer.
■ ON/OFF/AUTO
If the solar pump station has an ON/OFF/AUTO
function, make sure to put it on the AUTO function. This
means that the pump will switch on automatically when
the solar panel temperature rises sufficiently above the
domestic hot water tank temperature and switch off
automatically when the difference between the solar
panel and the domestic hot water tank temperature
becomes too low.
■ Maximum tank temperature
When the maximum temperature of the domestic hot
water tank is reached, the solar pump station will stop
pump operation.
■ Minimum temperature difference between domestic hot
water tank and solar panel before starting pump
operation
This minimum temperature difference will be put equal
to or above 18°F (10°C).
■ Anti-freeze setting
Some solar pump stations have an anti-freeze function.
If the solar panel temperature becomes too low, such
solar pump stations will circulate the solar fluid as to
extract heat from the tank and to avoid freezing of the
solar fluid.
Make sure to disable this function.
Hydraulic connection
Make sure the solar pump station has non-return valves as
to avoid thermosiphon effect (migration of hot water to cold
places). If the solar pump station has no hydraulic
connections included, install them in the field piping as
shown in "General system setup" on page 3.
NOTE
Putting this value to a higher value can
break down the pump of the solar pump
station.
CAUTION
■ Do not put this value above 176°F (80°C)
to avoid overheating of the domestic hot
water tank and to avoid activation of the
booster heater thermal protector in the
domestic hot water tank.
■ Some solar pump stations provide the
possibility to still dump heat to the
domestic hot water tank, even when the
maximum domestic hot water tank
temperature is already reached. This to
reduce the solar panel temperature by
circulating the solar panel fluid and
transfer the heat to the domestic hot
water tank.
If this function is present, it should be put
to OFF as to avoid thermal cut out
operation of the tank.
You can also change the domestic hot water
temperature setpoint on the controller of the
indoor unit. Refer to the operation manual of the
indoor unit. This temperature is sensed by the
domestic hot water temperature sensor of the
indoor unit, located in the upper thermistor holder
of the domestic hot water tank. For reasons of
energy savings, it is advised to put this
temperature as low as possible without
compromising the required supply of hot water.
This setting preferably is lower than the maximum
tank temperature setting on the controller of the
solar pump station.
The maximum temperature that can be set in the
controller of the solar pump station is sensed by
the domestic hot water temperature sensor of the
solar pump station, located in the lower
thermistor holder of the domestic hot water tank.
Refer also to "Operating instructions" on page 12
(subsection: Configuring your system).
WARNING
If this water temperature (domestic hot water
tank) can be a potential risk for human injuries, a
mixing valve (field supply) shall be installed at the
hot water outlet connection of the domestic hot
water tank. This mixing valve shall secure that the
hot water temperature at the hot water tap never
rise above a set maximum value. This maximum
allowable hot water temperature shall be selected
according to local laws and regulations.
NOTE
Make sure the concentration of glycol in
the solar panel is big enough as to avoid
freezing of the glycol at all times.

EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Installation and operation manual
5
A CCESSORIES
Accessories supplied with the solar kit
O VERVIEW OF THE SOLAR KIT
Main components
Safety functions
Thermal cut out
The solar kit is electrically connected with the thermal cut out safety
of the domestic hot water tank. (refer to "Field wiring" on page 8).
When the thermal cut out safety of the domestic hot water trips, the
power supply to the pump of the solar kit is interrupted so that no
more solar heat can be transferred to the domestic hot water tank.
Quantity
Necessary accessory for
installation of the solar kit for each
type of domestic hot water tank
EKHWS
050
50 gallons
(200 l)
080
80 gallons
(300 l)
1 Thermistor socket 1/2"
Male BSP (internal
diameter 6.1)
11 1
2 Connection pipe 3/4" Male
BSP x 3/4" Male BSP 11 1
3 Sealing 7 7 7
4 Adaptor 3/4" Female
BSP x 3/4" Male BSP 11 1
5 Adaptor 3/4" Male
BSP x 3/4" Male BSP 55 5
6 Installation manual 1 1 1
7EKRP1HB Digital I/O PCB
kit 11 1
8Contactor fixing screw 2 2 2
1x 5x1x1x 7x 1x 1x 2x
13546 278
1Solar kit circulation pump
2Heat exchanger
3Inlet connection from solar pump station
4Return connection to solar pump station
5Inlet connection from the indoor unit
6Return connection to the indoor unit
7a Return connection to the 50 and 80 gallons (200 and 300 l)
domestic hot water tank heat exchanger
7b Not applicable
8Inlet connection from the domestic hot water tank heat exchanger
9EPP casing
10 Non-return valves
10
10
8
7a
6
4
5
3
1
2
7b9 9

Installation and operation manual
6
EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
INSTALLATION OF THE SOLAR KIT
Selecting an installation location
■The solar kit is to be installed in a frost free indoor space,
directly connected to the domestic hot water tank.
■Make sure the service space is available as indicated in below
drawing.
■The space around the unit has to allow sufficient air circulation.
■It shall be made sure that in the case of a leak, leaking water will
not cause any damage or unsafe situations.
■Do not install or operate the unit in rooms mentioned below:
- Where corrosive gas like sulphurous gas exists: copper
tubing and brazed spots may corrode.
-Where volatile flammable gas like thinner or gasoline is used.
- Where machines generating electromagnetic waves exist:
the control system may malfunction.
-Where the air contains high levels of salt such as air near the
ocean and where voltage fluctuates a lot (e.g. in factories).
This applies also to vehicles or vessels.
Dimensions and service space
Service space dimensions below relate to requirements for
installation of the solar kit only.
For service space dimensions of the domestic hot water tank, refer to
the domestic hot water tank installation manual.
Installation guidelines
Installing the solar kit
■At delivery, the unit should be checked and any damage should
be reported immediately to the carrier claims agent.
■Check if all unit's accessories are enclosed. Refer to
"Accessories supplied with the solar kit" on page 5.
■Bring the unit as close as possible to its final installation position
in its original package in order to prevent damage during
transport.
A B
EKHWS050
(50 gallons)(200 l) 38.58 inch (980 mm) 15.75 inch (400 mm)
EKHWS080
(80 gallons)(300 l)
BA
38.23 inch
(971 mm)
1
5
°
WARNING
Make sure that all the piping to the solar kit is insulated.
CAUTION
■Make sure that all the piping to the solar kit is
sufficiently supported so that it will not cause any stress
on the solar kit.
■Make sure the piping is protected against dirt during
installation. Dirt in the piping might clog the heat
exchanger of the solar panel and reduce its
performance.
NOTE
Make sure that the piping coming from outdoors to the solar
kit is put through the wall under an angle and the wall hole is
sufficiently sealed afterwards, so no water can enter the
space.
1
2
3
1Wall
2Sealing material
3Piping under an angle

EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Installation and operation manual
7
Procedure
Refer to figure 1. The numbers on the figure refer to the steps
described below.
1Locate the domestic hot water tank in a suitable position to
facilitate the installation of the solar kit. It is therefore
recommended to first read the entire installation procedure.
Refer to the installation guidelines in the installation manual of
the domestic hot water tank.
2Fitting the thermistor sockets
Fit the thermistor socket in the thermistor hole for the domestic
hot water temperature sensor of the solar pump station. (Refer
to "Accessories supplied with the solar kit" on page 5, part 1).
3Refer to the corresponding sub-step.
3.1 Fit the adaptor 3/4" Female BSP x 3/4" Male BSP in the
flow inlet connection of the domestic hot water tank. Refer
to "Accessories supplied with the solar kit" on page 5, part
4.
3.2 Fit the connection pipe 3/4" Male BSP x 3/4" Male BSP and
sealing in the flow inlet connection of the domestic hot
water tank. Refer to "Accessories supplied with the solar
kit" on page 5, part 2 and 3.
4Fit the adaptor 3/4" Male BSP x 3/4" Male BSP in the heat
exchanger outlet connection of the domestic hot water tank.
Refer to "Accessories supplied with the solar kit" on page 5,
part 5.
5Fit the solar kit and sealings (x2) on the heat exchanger inlet
connection and heat exchanger outlet connection of the
domestic hot water tank. Torque 3.69 lb•ft (5 N•m). Refer to
"Accessories supplied with the solar kit" on page 5, part 3.
6Fit the adaptors 3/4" Male BSP x 3/4" Male BSP (x4) to the field
piping:
■Inlet connection from indoor unit.
■Return connection to indoor unit.
■Inlet connection from solar pump station.
■Return connection to solar pump station.
Refer to "Accessories supplied with the solar kit" on page 5,
part 5.
7Fit the solar kit and sealings (x4) to the field piping. Torque
3.69 lb•ft (5 N•m). Refer to "Accessories supplied with the solar
kit" on page 5, part 3.
8Mount the left side of the EPP casing onto the solar kit.
9Mount the EPP lid onto the right side of the EPP casing.
10 Mount the right side of the EPP casing onto the solar kit.
Take care, that the pump cable is routed via the holes in the
bottom of the EPP casing.
WARNING
■The piping between solar panels, solar pump
station and solar kit shall be copper piping and
properly insulated. The piping can reach the
same temperature as the maximum allowable
solar panel temperature.
■The piping between heating circuit and solar kit
connection shall be copper piping, at least 1.64 ft
(0.5 m) long and properly insulated.
Due to heat conduction, the piping can become
very hot.
■As the piping can become warmer than 123°F
(51°C), all piping shall be properly insulated to
avoid any possible (injury) burn.
■All used parts shall withstand the minimum
technical specifications mentioned under
"Technical specifications" on page 15.
CAUTION
Ensure that the pump cable cannot come into contact
with piping below the pump when cable is routed out.

Installation and operation manual
8
EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
11 Use the screws and washers (x2) to fix the EPP casing. Screw
until tight position.
Refer to the chapter "Typical application examples" described in the
installation manual delivered with the indoor unit for details on
connecting the water circuits and the motorised 3-way valve.
Charging water
Charge the water on the indoor unit and the tank (refer to the
installation manuals of the indoor unit and the domestic hot water
tank).
Charge the solar panel circuit with a glycol solution.
Caution: "Use of glycol"
Field wiring
Overview
The illustration below gives an overview of the required field wiring
between several parts of the installation. Refer also the wiring
diagram, the installation manual of the indoor unit and the domestic
hot water tank.
NOTE
Do not switch inlet and outlet connections.
CAUTION
■To install adequate connections between the indoor
unit and the solar kit, it is important that the 3-way
valve is fitted correctly.
■Ensure that the water piping connected to the solar kit
coming from the solar panel and the indoor unit are
sufficiently supported and do not cause any stress on
the solar kit.
Observe the instructions as given by your solar panel
supplier. Make sure to use non-toxic glycol.
WARNING
ETHYLENE GLYCOL IS TOXIC
Caution: Use of glycol
■Use only propylene glycol having a toxicity rating or
class of 1, as listed in "Clinical Toxicology of
Commercial Products, 5th edition" may be used.
■In case of over-pressure, be sure to connect the
safety valve to a drain in order to recover the glycol.
Corrosion of the system due to presence of glycol
Uninhibited glycol will turn acidic under the influence of
oxygen. This process is accelerated by presence of copper
and at higher temperatures. The acidic uninhibited glycol
attacks metal surfaces and forms galvanic corrosion cells
that cause severe damage to the system.
It is therefore of extreme importance:
■that the water treatment is correctly executed by a
qualified water specialist;
■that a glycol with corrosion inhibitors is selected to
counteract acids formed by the oxidation of glycols;
■only the use of propylene glycol is allowed.
■that no automotive glycol is used because their
corrosion inhibitors have a limited lifetime and contain
silicates which can foul or plug the system;
■that galvanized piping is not used in glycol systems
since its presence may lead to the precipitation of
certain components in the glycol's corrosion inhibitor;
■that it has to be made sure the glycol is compatible
with the used materials in the system.
NOTE Be aware of the hygroscopic property of glycol: it
absorbs moisture from its environment.
Leaving the cap off the glycol container causes the
concentration of water to increase. The glycol
concentration is then lower than assumed. And in
consequence, freezing can happen after all.
Preventive actions must be taken to ensure minimal
exposure of the glycol to air.
WARNING
■Switch off the power supply (outdoor unit power
supply, backup heater, and booster heater power
supply) before making any connections.
■All field wiring and components must be installed by a
licensed electrician and must comply with local laws
and regulations.
■The field wiring must be carried out in accordance
with the wiring diagram and the instructions given
below.
■Use only copper wires.
■Never squeeze bundled cables and make sure that it
does not come in contact with the piping and sharp
edges.
Make sure no external pressure is applied to the
terminal connections.
■Be sure to install the required fuses or circuit
breakers.
■After finishing the electrical work, confirm that each
electric part and terminal inside the electric part box is
connected securely.
CAUTION
Select all cables and wire sizes in accordance with relevant
local laws and regulations.
A...I Refer to the indoor unit installation manual
JSolar panel
KSolar pump station
LSolar kit
Item Description Required number of
conductors
Maximum
running
current
1 ... 9 Refer to the installation manual of the indoor unit
10 Solar panel sensor cable
(Field supply with solar
pump station)
2—
11 Domestic hot water
temperature sensor of the
solar pump station
(Field supply)
2—
T
M
M
2B
13
4
C5
6
7
8
D
A9
E
H
I
G
F
10
12
K
13
L
14
11
J

EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Installation and operation manual
9
Installing the EKRP1HB in the indoor unit
Install the PCB delivered with the solar kit in the indoor unit.
Refer to "Accessories supplied with the solar kit" on page 5, part 7.
1Open the EKRP1HB box.
2Take out the PCB and unwrap it.
3Open the accessories bag and take the connector labelled X1A.
4Place this connector on the EKRP1HB PCB (on the connector
X1A/CN1).
5Mount the plastic raisers from the accessories bag on the indoor
EKHB switch box backplate.
6Mount the EKRP1HB PCB on the plastic raisers.
Mount the control cable (from the accessories bag) between
A1P: X33A (the main PCB) and A4P: X2A/CN2 (the EKRP1HB
PCB).
■For EXHBH/X units only
■For EDH, EBH, EDL, EBL units only
12 Operating signal cable
from solar pump station to
indoor unit
(Field supply)
21A
13 Power supply cable from
indoor unit to tank
(Field supply)
EKHWS 2(a) 1 A
14 Power supply cable from
solar kit to tank
2 + GND 1 A
(a) Minimum cable section: AWG18 (0.75 mm2)
1Wrapped PCB (digital I/O PCB)
2Installation manual
3Accessory bag (connectors)
4Accessory bag (terminal - relays)
5EKRP1HB box
Item Description Required number of
conductors
Maximum
running
current
2 1
5
4
3
X2A/CN2
X1A/CN1
YC Y1 Y2 Y3 Y4
TR1
TR2
X8M
K1M K2M K5M
K3M K6M
F2B F3B F1B
X1M X3M
X2M X4M
X7M
A1P
X13A
X9A
A4P
X2A/CN2
X2M
19 20 21
X14A
A11P
A4P
X7M

Installation and operation manual
10
EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Connecting the temperature sensors
1Mount the solar panel sensor of the solar pump station in the
solar panel according to the instructions of the solar pump
station and solar panel supplier.
2Mounting the domestic hot water temperature sensor of the
solar pump station
Mount the domestic hot water temperature sensor of the solar
pump station in the lower sensor holder of the domestic hot
water tank.
Insert the sensor as deep as possible in the holder and use
thermal paste.
Connecting the solar pump station to the indoor unit
Connect the indoor unit terminals as shown on the following figures
to the (auxiliary) contact from the solar pump station.
Example
Connecting the power supply cable from the indoor unit
to the domestic hot water tank
Connect the indoor unit terminals to the domestic hot water tank.
Make sure to fix the cables with the cable tie mountings to ensure
strain relief.
NOTE ■The domestic hot water temperature sensor
of the indoor unit is mounted in the upper
sensor holder of the domestic hot water tank.
■The distance between the thermistor cables
and power supply cable must always be at
least 1.97 inch (5 cm) to prevent
electromagnetic interference on the
thermistor cables.
Field wiring
Solar pump station
Indoor: X7M
CAUTION
Make sure that:
■the (auxiliary) contact closes when the pump of the
solar pump station operates;
■the (auxiliary) contact opens when the pump of the
solar pump station stops;
■the contacts provides the input signal to the indoor
unit connection when it is closed;
56
Indoor: X7M
R1 N
P
Solar pump station

EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Installation and operation manual
11
Connecting the power supply cable from the solar kit
to the tank
Refer also to the wiring diagram sticker in the domestic hot water
tank switch box.
Locate terminal block X8M in the domestic hot water tank switch box
and make the required connections:
■from X2M and A4P (option EKRP1HB) in the indoor unit to
terminal block X8M;
■from the pump of the solar pump station to terminal block X8M.
EK
SO
LHWAV
JU
EKHBH/X or ED/BL
Q
EKHW
S
B
*
VJU
1
1
2
E4H
1
3
1
Q
3L
2
1
X6M
X8M
X4M
1
M
BLU
BRN
Y
LW
/G
R
N
4
Q
3L 1
3
3
°
C
91
°
C
Q
2T
1
E4H
RESE
T
2
1
1
3
2
4
1
3
2
4
Q
2L
Q
3T
BRN
BRN
BRN
BRN
BRN
BLK
YLW
/G
R
N
BLK
YLW
/G
R
N
A4P
X2M
X4
2
8
X2M
1
3a
X3
4
WARNING
Make sure to connect the earth conductor.
Make sure to ensure strain relief of the cables by correct
use of the PG nipples and PG nuts (field supply) (to be
mounted on the domestic hot water tank).
Positions where PG nipples and PG nuts need to be
screwed in the domestic hot water tank are indicated on
figure 1 as actions 14.
2x
2x 12
EKHWS

Installation and operation manual
12
EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
START UP
Commissioning the system before initial start up
Checklist for proper functioning
Following items should be checked to assure proper functioning:
■When the temperature of the solar panel becomes 18°F (10°C)
higher than the domestic hot water tank temperature, the pump
of the solar pump station and the pump of the solar kit will start
operation.(1)
■When the temperature of the solar panel becomes lower than
the domestic hot water tank temperature, the pump of the solar
pump station and the pump of the solar kit will stop operation.
Final check
Before switching on the unit, read following recommendations:
■When the complete installation and all necessary settings have
been carried out, close all front panels of the unit and refit the
indoor unit cover.
■The service panel of the switch box may only be opened by a
licensed electrician for maintenance purposes.
OPERATING INSTRUCTIONS
Configuring your system
In order to guarantee maximum energy savings combined with
maximum comfort, it is important to configure your system in a proper
way.
For this reason, it is strongly recommended to do the following:
Use of schedule timers
■Check the orientation of your solar panel, and find out during
what time of the day the intensity of the sun on it is expected to
be strong and weak. For example, a solar panel oriented to the
east will receive strong intensity during the morning, weak
intensity during the afternoon.
■Check your usual pattern of peak domestic hot water
consumption. E.g. showering during the morning from 7 to 9
a.m. and again in the evening from 5 p.m. onwards.
■Set the schedule timer for 'domestic water heating' and 'booster
heating' as to disable heating of the domestic water tank by the
indoor unit before solar radiation on the solar panel can become
intensive.
On the other hand, enable 'domestic water heating' and/or
'booster heating' about 1 hour before you usually expect
domestic hot water consumption or during night time. In this way,
the indoor unit and/or booster heater will heat up the domestic
water tank and guarantee domestic hot water in the event there
has been no sun.
CAUTION
Besides the checks before initial start up of the indoor unit
(refer to the installation manual of the indoor unit) you must
check the following items on the solar kit installation before
switching on the circuit breaker:
■The domestic hot water tank is filled with water. Refer
to the installation manual of the domestic hot water
tank.
■The circuit, connected to the solar kit is filled with
water. Refer to the installation manual of the indoor
unit.
■The solar collector circuit is filled with glycol. Refer to
the installation manual of the solar circuit.
■Make sure the solar kit is properly fixed to the
domestic hot water tank and that there are no leaks.
■Ensure the power supply cable from the indoor unit is
connected to the domestic hot water tank.
■Mounting of sensors
Make sure the solar panel temperature sensor and
the domestic hot water temperature sensor of the
solar pump station are properly mounted.
■Ensure that the auxiliary contact of the solar pump
station is connected to the indoor unit and will give to
the input of the indoor unit when the pump of the solar
pump station operates.
WARNING
Field wiring and earthing
Make sure the pump of the solar kit is connected to the
domestic hot water tank as shown in the wiring diagram
and the pump earth wires have been connected properly.
The earth terminals should be tightened.
CAUTION
Verify that following settings are made on the solar pump
station:
■Maximum solar panel temperature: ≤212°F (100°C)
■Maximum tank temperature: 176°F (80°C)
■Minimum temperature difference between domestic
hot water tank and solar panel before starting pump
operation: ≥18°F (≥10°C)
NOTE Make sure a non-return valve is included in the solar
pump station or is installed in the connection line from
the solar pump station to the solar kit. Refer also to the
general system set-up (on page 3).
Absence of this valve will cause thermal losses and
could cause freezing of the plate heat exchanger.
(1) Unless the domestic water heating mode is enabled, the solar priority parameter
= 1 and the heat pump is heating the domestic water tank at that moment.
Refer to "Configuring your system" on page 12 for more information.

EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Installation and operation manual
13
Example
Your domestic hot water consumption pattern is from 7 a.m. to 9 a.m. in the morning and from 5 p.m. till 11 p.m. in the evening.
Since the solar panel is oriented towards the south-east, the radiation can be intensive on the solar panel from 8 a.m to 6 p.m.
If the domestic hot water tank has not been heated enough by the
sun during the day, or a lot of warm water was consumed the evening
before, the domestic hot water tank must be heated up during the
night time by the indoor unit, so that in the morning domestic hot
water is available for consumption. For this reason, in the example
above, domestic water heating is enabled during the night, until
consumption of warm water is expected to start.
In the morning, the domestic water heating/booster heating is
disabled. In this way, the domestic hot water tank is not reheated
after or during consumption of warm water and the sun will get the
chance to reheat the water as much as possible.
Since domestic hot water consumption is expected again from 5 p.m.
onwards, the domestic water heating and/or booster heating is
enabled again 1 hour before, from 4 p.m. onwards. This will
guarantee, in the case of absence of sun during the day, maximum
warm water capacity by 5 p.m.
Setting of domestic hot water tank temperature
The domestic hot water tank has 2 temperature sensors.
The upper temperature sensor is the thermostat sensor of your
indoor unit. This temperature can be set on your indoor unit (refer to
the operation manual of the indoor unit). It is advised to set this
temperature as low as possible. Start with a low temperature, e.g.
113°F (45°C). If with this temperature you face shortage of warm
water during normal tapping patterns, increase gradually until you
find the temperature of warm water that covers your daily demand.
The lower temperature sensor is the thermostat sensor of the solar
pump station. This temperature can be set on the solar pump station.
Put this temperature as high as possible but not higher than 176°F
(80°C), as otherwise the thermal protection in the tank might trip.
With above settings, the heating of the water by heat pump/booster
heater will be limited to the minimum required, and solar heat will be
stocked in the domestic hot water tank to the maximum.
Setting of the solar priority parameter
Simultaneous water heating by the sun and water heating by the heat
pump is not possible.
By default, heating of the tank by the heat pump has priority over
heating by the sun.
This means that, whenever there is a request of the domestic hot
water thermostat and domestic water heating is enabled (by the
schedule timer or domestic water heating ON/OFF button, refer to the
operation manual of the indoor unit), heating will be done by the heat
pump. In case solar heating is busy, solar heating will be stopped.
This is to avoid shortage of domestic hot water in case the solar
radiation is very weak, or solar radiation only became high shortly
before domestic hot water demand is expected (e.g. on a cloudy
day).
This default setting can be changed, so that at all times, when solar
heat becomes available, domestic water heating by the heat pump
will be (if busy) interrupted and taken over by the sun.
In order to change this, put the field parameter [C-00] to 0. Refer to
the installation manual of the indoor unit, paragraph "Field settings"
to find out how to access and change field parameters. [C-00] put to
0 means solar priority, [C-01] put to 1 means heat pump priority.
Domestic hot water
consumption pattern Expected
Not expected
Solar radiation on the
solar panel Strong
Weak
Recommended setting of schedule timers
Domestic water
heating/booster heating Enable
Disable
Hour 0123456789101112131415161718192021222324
To set schedule timers, refer to the operation manual of the
indoor unit.
WARNING
If this water temperature (domestic hot water tank) can be
a potential risk for human injuries, a mixing valve (field
supply) shall be installed at the hot water outlet connection
of the domestic hot water tank. This mixing valve shall
secure that the hot water temperature at the hot water tap
never rise above a set maximum value. This maximum
allowable hot water temperature shall be selected
according to local laws and regulations.
Refer to the operation manual of the indoor unit to change
the domestic hot water temperature setting.
For optimal solar efficiency and system operation it is
advised that domestic hot water temperature setting on the
indoor unit controller is lower than the temperature setting
on the solar pump station controller.
Be aware that setting this parameter to 0 might cause
insufficient warm water at the time of domestic hot water
demand during days with weak solar intensity.
If you are not sure about the availability of hot water, check
the domestic hot water temperature on the controller (see
operation manual of the indoor unit) and if too low, push
the 'booster domestic hot water' button. This will trigger
domestic water heating by the heat pump immediately.

Installation and operation manual
14
EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
TROUBLESHOOTING AND SERVICING
This section provides useful information for diagnosing and
correcting certain troubles which may occur with the unit.
This troubleshooting and corrective actions may only be carried out
by your local Daikin technician.
General guidelines
Before starting the troubleshooting procedure, carry out a thorough
visual inspection of the unit and look for obvious defects such as
loose connections or defective wiring.
When a safety device was activated, stop the unit and find out why
the safety device was activated before resetting it. Under no
circumstances safety devices may be bridged or changed to a value
other than the factory setting. If the cause of the problem cannot be
found, call your local dealer.
General symptoms
Symptom 1: The pump of the solar pump station starts
operation, but the pump of the solar kit is not working.
Symptom 2: There is a lot of sun intensity but the solar pump
station and solar kit pumps do not start.
Error codes
When a safety device is activated, the user interface LED will be
flashing, and an error code will be displayed.
Following error codes might be related to a malfunction of your solar
system. First, check also the corrective actions as mentioned in the
installation manual.
Reset the safety by turning the unit OFF and back ON.
In case this procedure for resetting the safety is not successful,
contact your local dealer.
DISPOSAL REQUIREMENTS
Dismantling of the unit, treatment of the refrigerant, of oil and of other
parts must be done in accordance with relevant local and national
legislation.
Do not try to dismantle the system yourself: the dismantling of the
system, treatment of the refrigerant, of oil and other parts must be
done by a qualified installer in accordance with relevant local and
national legislation.
Units must be treated at a specialized treatment facility for re-use,
recycling and recovery. By ensuring this product is disposed off
correctly, you will help to prevent potential negative consequences for
the environment and human health. Please contact the installer or
local authority for more information.
The booster heater in the domestic hot water tank can
work independent from the solar heating or domestic water
heating by the heat pump.
For a detailed decision flow on domestic water heating by
solar kit or by heat pump, and/or booster heater, refer to
the annexes "Decision flow of heating the domestic water
by heat pump or by solar kit" on page 15 and "Decision
flow of heating the domestic water by booster heater" on
page 16.
WARNING
When carrying out an inspection on the switch box of the
unit, always make sure the main switch of the unit is
switched off.
DANGER
Do not touch water pipes during and immediately after
operation as the pipes may be hot. Your hand may suffer
burns. To avoid injury, give the piping time to return to
normal temperature or be sure to wear proper gloves.
WARNING
Do not touch the internal parts (pump, etc.) during and
immediately after operation.
Your hands may suffer burns if you touch the internal parts.
To avoid injury, give the internal parts time to return to
normal temperature or, if you must touch them, be sure to
wear proper gloves.
POSSIBLE CAUSES CORRECTIVE ACTION
The tank has reached its maximum
allowed temperature (see the
temperature reading on the indoor
unit display)
Refer to "Maximum tank
temperature" on page 4.
The auxiliary contact from the solar
pump station to the indoor unit is not
properly wired
Check the wiring. Make sure that
when the solar pump station pump is
operating, the indoor connection
receives the input signal.
The pump of the solar kit is not
properly wired to the indoor unit
through the tank
Check the wiring.
The priority for domestic water
heating is given to the heat pump
Refer to "Setting of the solar priority
parameter" on page 13.
The thermal cut out of the tank has
operated
Refer to error code AA in "Error
codes" on page 14.
POSSIBLE CAUSES CORRECTIVE ACTION
The maximum temperature of the
domestic hot water tank is reached
Check the domestic hot water
temperature on the controller of the
indoor unit (refer to the operation
manual of the indoor unit) and check
the maximum temperature setting on
your solar pump station.
The outdoor unit is heating up the
domestic water tank, since the
priority for domestic water heating is
given to the heat pump
Refer to "Setting of the solar priority
parameter" on page 13.
Instruction to turn the unit OFF
User interface mode
(heating/cooling =)Domestic water heating mode (w)Push the ybutton Push the vbutton
ON ON 1 time 1 time
ON OFF 1 time —
OFF ON —1time
OFF OFF ——
Error
code Failure cause Corrective action
BH Outlet water temperature
of indoor unit too high
(>149°F (>65°C))
Check the 3-way valve and its wiring:
• 3-way valve is broken or wrongly
connected and remains in the
'domestic hot water' position during
operation of the solar kit.
• One of the non-return valves in the
solar kit is broken. Check the non-
return valves.
AA Booster heater thermal
protector is open
The maximum allowed temperature
setting on the solar pump station is set
too high. (shall be set below 176°F
(80°C)).
Reset the booster heater thermal
protector on the domestic hot water tank.
Your product is marked with this symbol. This means
that electrical and electronic products shall not be
mixed with unsorted household waste.

EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Installation and operation manual
15
TECHNICAL SPECIFICATIONS
ANNEXES
Decision flow of heating the domestic water by heat pump or by solar kit
• Maximum operating pressure of the connections to and from the solar pump station 362.60 psi (2.5 MPa)
•Maximum operating pressure of the connections to and from the indoor unit and connections to and from the domestic hot water
tank heat exchanger
43.51 psi (0.3 MPa)
• Minimum/maximum ambient temperature 39.2/95°F (4/35°C)
• Minimum/maximum fluid temperature 33.8/212°F (1/100°C)
• Heat transfer liquid (solar side) propylene glycol
Setting = 1
(no solar priority) Solar priority
parameter
Setting = 0
(solar priority)
Ye s Solar energy
available (Solar
panel T > DHW T
SPS +18°F
(10°C))
No Yes Solar energy
available
(Solar panel T
> DHW T SPS
+18°F (10°C))
No
DHW T I/U ≤heat
pump ON
temperature
Ye s
No DHW T I/U ≤
heat pump ON
temperature
Ye s N o DHW T I/U ≤
heat pump ON
temperature
No
DHW heating
enabled (by
schedule timer or
domestic water
heating button)
Ye s
Ye s
No
DHW heating
by heat pump
No DHW heating
enabled (by
schedule timer
or domestic
water heating
button)
Ye s No DHW T SPS >
maximum
domestic hot
water tank
temperature
Ye s
No DHW T SPS >
maximum
domestic hot water
tank temperature
DHW
heating by
heat pump
Ye s DHW heating only
possible by booster
heater. Refer to BH
decision flow.No DHW heating enabled
(by schedule timer or
domestic water heating
button)
DHW heating
by solar kit
DHW
heating by
solar kit
Tank on
maximum
allowed
temperature: no
more heating
allowed
Ye s Tank on maximum
allowed temperature:
no more heating
allowed
DHW heating
only possible by
booster heater.
Refer to BH
decision flow
DHW heating by
heat pump
DHW Domestic Hot Water
DHW T SPS Domestic Hot Water Temperature by the Solar Pump Station temperature sensor
DHW T I/U Domestic Hot Water Temperature by the Indoor Unit temperature sensor
BH Booster Heater

Installation and operation manual
16
EKSOLHWAVJU
Solar kit for air to water heat pump system
4PW54234-1
Decision flow of heating the domestic water by booster heater
Setting = 1
(no solar priority) Solar priority
parameter
Setting = 0
(solar priority)
Ye s Solar energy
available (Solar
panel T > DHW T
SPS +18°F
(10°C))
No Ye s Solar energy
available
(Solar panel T
> DHW T SPS
+ 18°F
(10°C))
No
DHW T I/U ≤BH
ON temperature
Ye s
No
DHW T I/U ≤
BH ON
temperature
Ye s No
DHW T I/U ≤
BH ON
temperature
No
No BH operation
(solar kit will operate
if maximum
temperature not
reached yet)
BH operation
enabled (by
schedule timer) Ye s
Ye s
BH delay time
finished
No BH operation
enabled (by
schedule timer)
Ye s No
No BH operation
enabled (by
schedule
timer)
Ye s
Ye s
No BH delay
time
finished BH operation
Ye s No
BH delay time finished
No BH
operation
No BH operation
(solar kit will
operate if
maximum
temperature not
reached yet)
BH operation
together with
solar kit Ye s
No BH operation BH operation
DHW Domestic Hot Water
DHW T SPS Domestic Hot Water Temperature by the Solar Pump Station temperature sensor
DHW T I/U Domestic Hot Water Temperature by the Indoor Unit temperature sensor
BH Booster Heater

NOTESNOTES

DAIKIN AIR CONDITIONING AMERICAS
1645 Wallace Drive, Suite 110
Carrollton, TX 75006
Copyright © Daikin
4PW54234-1