Altherma EKHWE150A3V3 User manual

INSTALLATION MANUAL
EKHWE150A3V3
EKHWET150A3V3
EKHWE200A3V3
EKHWE300A3V3
EKHWE200A3Z2
EKHWE300A3Z2
Domestic hot water tank for air to water heat
pump system

1
2
3
1x 1x 2x 4x 1x 1x 1x
123 567 4
93
82
12
9
2
0
44
37
44
42
65
H4
H3
H5
1
1
5
300
H2
20
~4
0
H1
45
°
350
100
30
30
50
700
300
4
4
0
500
45
°
30
30
7
00
400
705
2
2
0
255
280
35
1
1
5
7
7
5
1
1
50
13
21
355
44
0
50
EKHWE1
50
~
300
EKHWET1
50
D1
1150
775
280
255
35
545
1525
925
280
410
35
545
1
5
2
5
851
21
0
41
0
27
660
H1
H2
H3
H4
H5
Ø D1
15
0
20
0
EKHWE
30
0
A
A
A
A
16
16
16
400
400
0
400
2
1
3

EKHWE150~300A3V3 + EKHWE200+300A3Z2
Domestic hot water tank for air to water heat pump system
4PW43396-1B
Installation manual
1
C
ONTENTS
Page
Introduction........................................................................................1
General information ................................................................................... 1
Scope of this manual................................................................................. 1
Model identification.................................................................................... 1
Accessories .......................................................................................1
Accessories supplied with the domestic hot water tank ............................ 1
Warranty ............................................................................................1
Installation of the EKHWE domestic hot water tank ..........................2
Main components ..............................................................................2
Outlook diagram ........................................................................................ 3
Installation guidelines ................................................................................ 3
Installing the domestic hot water tank ....................................................... 3
Connecting the water circuits .................................................................... 3
Field wiring ................................................................................................ 5
Commissioning ..................................................................................6
Maintenance ......................................................................................7
Troubleshooting .................................................................................7
General guidelines..................................................................................... 7
General symptoms .................................................................................... 7
Technical specifications .....................................................................7
Domestic hot water tank specifications ..................................................... 7
I
NTRODUCTION
General information
Thank you for purchasing this domestic hot water tank.
The EKHWE domestic hot water tank with integrated 3 kW electrical
booster heater must be connected to the indoor unit. The domestic
hot water tank is available in three sizes: 150, 200 and 300 litre. All
models are floor mounted, while the 150 litre model
EKHWET150A3V3 is wall mounted. The 200 and 300 litre models
are also available as 400 V versions.
Scope of this manual
This installation manual describes the procedures for unpacking,
installing and connecting the EKHWE domestic hot water tanks.
Model identification
A
CCESSORIES
Accessories supplied with the domestic hot water tank
See figure 1
W
ARRANTY
EKHWE150A3V3 EKHWET150A3V3
EKHWE200A3V3 EKHWE200A3Z2
EKHWE300A3V3 EKHWE300A3Z2
Domestic hot water tank
for air to water heat pump system
Installation 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.
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 0°C~35°C.
EK HWE (T) 150 A 3 V3
Booster heater voltage
V3 = 1P, 230 V
Z2 = 2P, 400 V (only for
200 l and 300 l models)
Capacity booster heater: 3 kW
Series
Indication of storage capacity in litres
T = wall mounted; otherwise, floor standing
Hot Water tank Enamel coated
European Kit
1 Thermistor + connection wire (12 m)
2 Contactor - fuse assembly
3 Contactor fixing screw
4 Tapping screw
5 Installation manual
6 3-way valve (Rp 1")
7 3-way valve motor
Warranty will not be valid if
■ a pressure relief valve of max. 10 bar is not installed.
■ abnormal corrosion occurred due to not installing
dielectric couplings.
■ incorrect electric connections are made.
■ applying electric power to the unit before filling it with
water.
■ insufficient maintenance, in particular not inspecting
the anode every 2 years and replacing if required.

Installation manual
2
EKHWE150~300A3V3 + EKHWE200+300A3Z2
Domestic hot water tank for air to water heat pump system
4PW43396-1B
I NSTALLATION OF THE EKHWE DOMESTIC HOT
WATER TANK
In case of limited consumption of domestic hot water, e.g. at holiday
residences or at houses that are occasionally not occupied, the
domestic hot water tank installation must be fitted with a shunt pump.
■ The shunt pump can be time-controlled,
■ the shunt pump must operate to circulate the complete volume
of the domestic hot water tank 1.5 times per hour,
■ and the shunt pump must operate, or be programmed for
operation, during 2 uninterrupted hours per day at least.
In case of very long field water piping between the domestic hot
water tank and the hot water end point (shower, bath, etc.) it can take
more time before the hot water from the domestic hot water tank
reaches the hot water end point.
If required connect a recirculation pump in between the hot water end
point and the recirculation hole in the domestic hot water tank.
Main components
■ The total AD system (indoor unit
and outdoor unit) is designed for combination with an
AD domestic hot water tank. In case
another tank is being used in combination with the
AD indoor unit, Daikin cannot
guarantee neither good operation nor reliability of the
system. For those reasons Daikin cannot give
warranty of the system in such case.
■ Domestic hot water quality must be according to EN
directive 98/83 EC.
■ A drain device should be installed on the cold water
connection on the domestic hot water tank.
■ For safety reasons, it is not allowed to add ethylene
glycol to the water circuit. Adding ethylene glycol
might lead to contamination of the domestic water if a
leakage would occur in the heat exchanger coil.
■ It is important that the storage capacity of the
domestic hot water tank meets normal daily
fluctuations in consumption of domestic hot water
without any fall of the water outlet temperature during
use.
■ Take care that in the event of a leak, water cannot
cause any damage to the installation space and
surroundings.
■ The anode shall be inspected at least every 2 years
and, if required, replaced.
■ A pressure relief device of max. 10 bar should be
installed on the domestic hot water tank.
1Cold water connection
2Hot water connection
3Shunt pump
(field supply)
4Non-return valve
(field supply)
1
23
4
2
1
1Shower
2Recirculation pump
1 Anode
2 Hot water connection (3/4" MBSP)
(a)
(a) MBSP = Male British Standard Pipe
3 Pressure relief valve connection (1/2" MBSP)
(a)
4 Electrical box
5 Recirculation hole (3/4" MBSP)
(a)
6 Thermistor socket
7 Heat exchanger inlet (3/4" FBSP)
(b)
(b) FBSP = Female British Standard Pipe
8 Heat exchanger coil
9 Heat exchanger outlet (3/4" FBSP)
(b)
10 Cold water connection (3/4" MBSP)
(a)
11 Thermistor hole for use with solar kit option.
Refer to the Installation manual EKSOLHWAV1.
12 Electric heater element
13 Inspection flange
14 Thermal cut out
15 Cable entry from indoor unit
16 Cable entry for use with optional solar kit
A
3
2
5
6
4
7
11
8
9
10
4
1
15
16
12
13
14
A

EKHWE150~300A3V3 + EKHWE200+300A3Z2
Domestic hot water tank for air to water heat pump system
4PW43396-1B
Installation manual
3
Safety devices
■ Thermal protector — The booster heater in the domestic hot
water tank is equipped with a thermal protector. The thermal
protector is activated when the temperature becomes too high.
When activated, the protector has to be reset on the domestic
hot water tank by pressing the red button (for access, remove
the electrical box cover).
■ Pressure relief valve — A pressure relief valve (field supply) in
accordance with relevant local and national regulations, and with
an opening pressure of maximum 10 bar must be connected to
the pressure relief valve connection.
Water may drip from the discharge of the pressure relief valve
device.
Outlook diagram
Outlook diagram, see figure 2.
Installation guidelines
Keep in mind the following guidelines when installing the domestic
hot water tank:
■ The installation location is frost-free.
■ Take care that in the event of a leak, water cannot cause any
damage to the installation space and surroundings.
■ Make sure to make the piping in size 1" or more (and reduce to
3/4" at the inlet of the tank) as to have sufficient water volume in
the piping between indoor unit and domestic hot water tank.
■ Locate the domestic hot water tank in a suitable position to
facilitate ease of maintenance; remember access is required to
the electrical box. Refer to the grey-coloured zones indicated in
figure 2.
■ Provide a connection for the pressure relief valve blow-off and
drain.
■ To avoid back siphonage it is advised to install a non-return
valve on the water inlet of the domestic hot water tank in
accordance with local and national regulations.
Installing the domestic hot water tank
1 Check if all domestic hot water tank accessories (see
"Accessories" on page 1) are enclosed.
2 When floor mounting, place the domestic hot water tank on a
level surface. If required, adjust the legs at the bottom. When
wall mounting (only for EKHWET150A3V3 model), make sure
the wall is sturdy. In both cases, make sure the domestic hot
water tank is mounted level.
3 Make sure to respect the service space as indicated in figure 2.
Connecting the water circuits
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.
Make sure to insulate all water pipes and connections.
Connecting the 3-way valve
1 Refer to figure 3 before making the connection.
2 Installation position.
It is advised to connect the 3-way valve as close as possible to
the indoor unit. It can be installed according the following four
configurations.
■ The domestic hot water tank relief valve connections
may not be used for other purpose.
■ Do not install heaters without thermal cut-outs.
The electrical box lid must only be opened by a
licensed electrician.
Switch off the power supply before opening the
electrical box lid.
figure A figure B
figure C figure D
1
From
AD
indoor unit
2 To domestic hot water tank
3 To room heating
1
2
3
1
3
2
1
2
3
1
3
2

Installation manual
4
EKHWE150~300A3V3 + EKHWE200+300A3Z2
Domestic hot water tank for air to water heat pump system
4PW43396-1B
3 Unpack the 3-way valve body and 3-way valve motor.
Verify that following accessories are provided with the motor.
4 Install the 3-way valve body in the pipework.
•Make sure the shaft will be positioned in such a way that the
motor can be mounted and replaced.
•When installing the valve according to figure C or figure D,
remove the indication plate and turn it upside down, making
sure the scale "0 to 10" is located on the lower left bottom of
the valve.
•Put the sleeve on the valve and turn the valve to the middle
position (marked as "5") of the scale plate.
Check that the valve is positioned as in the figure below. It
should be blocking the outlet connection to the domestic hot
water for 50% and the outlet connection to the room heating
also for 50%.
5 When installing according to figure B or figure C, open the valve
motor cover by loosening the 4 screws and change the jumper
as to change the rotation direction of the valve.
By default the jumper is factory set to apply for installation
according to figure A and figure D.
6 Fit screw 2 (see step 3) in the lower right hand corner of the
valve cover plate.
7 Push the motor on the motor sleeve.
Make sure not to rotate the sleeve during this action, as to
maintain the valve position as set during step 4.
8 Put the red/blue scale on the valve as shown below.
The red arrow will point to the red zone when the valve is in
domestic water heating mode and will point to the blue zone
when the valve is in room heating mode.
9 Make the wiring in the indoor unit according to following figure:
Refer also to the drawing on page 6.
Connecting the water circuits
1 Connect the water inlet and water outlet from the heat
exchanger.
2 Connect the hot and cold water supply tubes.
3 Connect the pressure relief valve (field supply, opening pressure
maximum 10 bar).
1 Sleeve
2 Screw
3 Central screw
4 Red/blue scale
5 Cover
6 Indication plate
7 Valve motor cover
Installation in accordance with
figure A and figure B Installation in accordance with figure C and figure D
If the valve is not positioned in this way before mounting
the motor, the valve will give way to both domestic water
and room heating during operation.
Installation in accordance with
figure A and figure D Installation in accordance with figure B and figure C
12654 3 7
Installation in accordance with
figure A and figure B Installation in accordance with figure C and figure D
Installation in accordance with
figure A and figure D Installation in accordance with figure B and figure C
8910
3-way valve
BLK BLU BRN
Make sure to use galvanic couplings for the connection.
If a discharge pipe is connected to the pressure relief
device it must be installed in a continuously downward
direction and in a frost-free environment. It must be left
open to the atmosphere.

EKHWE150~300A3V3 + EKHWE200+300A3Z2
Domestic hot water tank for air to water heat pump system
4PW43396-1B
Installation manual
5
Field wiring
Power circuit and cable requirements
For cable requirements and specifications, refer to "Field wiring" in
the indoor unit installation manual supplied with the EKHBH/X unit.
Thermistor and thermistor cable
Insert the thermistor as deep as possible in the thermistor socket. Fix
using the spring provided.
The distance between the thermistor cable and power supply cable
must always be at least 5 cm to prevent electromagnetic interference
on the thermistor cable.
Procedure
Connections to be made in the domestic hot water tank
electrical box
1For the EKHWE*V3 model, connect the booster heater power
supply and thermal protection cable as shown in the wiring
diagram below.
■A main switch or other means for disconnection,
having a contact separation in all poles, must be
incorporated in the fixed wiring in accordance with
relevant local and national legislation.
■All field wiring and components must be installed by a
licensed electrician and must comply with relevant
European and national regulations.
■The field wiring must be carried out in accordance
with the wiring diagram supplied with the unit and the
instructions given below.
■The domestic hot water tank must be earthed via the
indoor unit.
■Be sure to use a dedicated power circuit. Never use a
power circuit shared by another appliance.
■Use one and same dedicated power supply for the
outdoor unit, indoor unit, backup heater and domestic
hot water tank.
NOTE Select the power cable in accordance with relevant
local and national regulations.
1
3
4
2
Switch off the power supply before making any
connections.
Make sure the power supply cable is insulated from the
surface of the inspection hole or can resist temperatures to
90°C.
YLW Yellow BRN Brown
GRN Green BLU Blue
Can become hot
EKHB
19
20
P1
P2
14
13
1
2
YLW/GRN
BLU
BRN
YLW/GRN
P
19 20
19 20
19 20 211314
21 13
14
X2M X2MX4M
EKHBEKSOLHW
X10M
X9M

Installation manual
6EKHWE150~300A3V3 + EKHWE200+300A3Z2
Domestic hot water tank for air to water heat pump system
4PW43396-1B
For the Z2 models, connect as follows:
2Make sure to ensure strain relief of the cable.
Connections to be made in the indoor unit switch box
3Mount the prewired contactor (K3M), circuit breaker (F2B) and
terminal blocks (X3M, X4M). The contactor must be fixed with
the 2 supplied contactor screws and the terminal blocks must be
fixed with the 2x 2 supplied tapping screws.
4Plug the connector connected to the contactor K3M in the
socket X13A on the PCB.
5Plug the thermistor cable connector in the socket X9A on the
PCB.
6Connect the prewired earth wires of the terminal block X3M and
X4M to the earthing screw.
7Connect the booster heater power supply and thermal protection
cable (field supply) to terminal X4M earth, 1, 2, and X2M 13, 14.
8Connect the booster heater power supply cable to the terminal
block X3M.
9Fix the cables to the cable tie mountings with cable ties to
ensure strain relief.
10 Set DIP switch SS2-2 on the PCB to ON.
11 When routing out cables, make sure that these do not obstruct
mounting of the indoor unit cover.
Note: only relevant field wiring is shown.
COMMISSIONING
Before putting power to the unit, make sure:
■the unit is filled with water,
■the sensor of the thermistor cable is mounted correctly in the
thermistor socket,
■a pressure relief valve is installed.
Check the operation of the 3-way valve: make sure that when the
indoor unit is in domestic water mode it sends hot water to the tank;
when it is in room heating mode, it sends water to the room (feel the
tubes by hand).
YLW Yellow BRN Brown
GRN Green BLU Blue
Can become hot
EKHB
19
20
P1
P2
14
13
1
2
YLW/GRN
BLU
BRN
YLW/GRN
P
19 20
19 20
19 20 211314
21 13
14
X2M X2MX4M
EKHBEKSOLHW
X10M
X9M
A4P
K6M
F2B
3M
K7M
21
X4M
4a
OPTIONAL
X2M
2120
Q2L
3-way valve2-way valve
12114
thermostat
213 56789
10 13 19
thermal
fuse
14 15 16 17 18
SOLAR PUMP
NL
L2L1
X3M (230V)
F1B
TR1
TR1
A1P
A1P
X2M
X1M
K5M
K2M
K1M
K1M
K2M
K5M
K4M
123 L1 L2 L3 N
15a
K3M
X9A
X13A
12 4
2
3
X4M X2M
>50 mm
3 way
valve
BLK BLU BRN
X4M
X3M
230 V AC
3 kW
LN
400 V AC
3 kW
L1 L2
V3
Z2

EKHWE150~300A3V3 + EKHWE200+300A3Z2
Domestic hot water tank for air to water heat pump system
4PW43396-1B
Installation manual
7
MAINTENANCE
In order to ensure optimal availability of the unit, a number of checks
and inspections on the unit and the field wiring have to be carried out
at regular intervals.
1The pressure relief device valve is to be operated regularly as to
remove lime deposits and to verify that it is not blocked.
2 Once a year: Descaling
Depending on the water and set temperature, scale will deposit
on the heat exchanger and booster heater inside the domestic
hot water tank.
This will restrict heat transfer and can cause burn out of the
booster heater. For this reason, descale the booster heater and
the heat exchanger.
3 Once every 2 year: Anode.
Check if the anode is not deteriorated. If the diameter of the
anode has decreased with 10 mm or more, make sure to
replace it (original diameter is 33 mm).
TROUBLESHOOTING
This section provides useful information for diagnosing and
correcting certain troubles which may occur in the unit.
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.
Before contacting your local dealer, read this chapter carefully, it will
save you time and money.
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: No water flow from hot taps
Symptom 2: Water from hot taps is cold
TECHNICAL SPECIFICATIONS
Domestic hot water tank specifications
■Before carrying out any maintenance or repair activity,
always switch off the circuit breaker on the supply
panel, remove the fuses or open the protection
devices of the unit.
■Make sure that before starting any maintenance or
repair activity, also the power supply to the outdoor
unit is switched off.
Do not use sharp metal tools or strong acid to remove the
scaling. Only use commercially available cleaning and
scale removal agents for copper and enamelled surfaces.
After removing the scale, rinse the domestic hot water tank
by water jet.
It is of the utmost importance that the anode is in good
contact with the domestic hot water tank. For this reason,
after replacing the anode or other servicing, make sure
that the anode is connected with the earthing screw.
When carrying out an inspection on the supply panel or on
the switch box of the unit, always make sure that the circuit
breaker of the unit is switched off.
POSSIBLE CAUSES CORRECTIVE ACTION
The main water supply is off. Check that all shut off valves of the
water circuit are completely open.
POSSIBLE CAUSES CORRECTIVE ACTION
The thermal cut-out(s) has/have
operated
•Check and reset button(s).
•Put the thermostat setting for
domestic hot water on the indoor unit
to ≤75°C.
•Check if thermistor is correctly
installed in thermistor socket.
The indoor unit (EKHBH/X) is not
operating. Check the indoor unit (EKHBH/X) operation. Refer to the manual
delivered with the indoor unit.
If any faults are suspected, contact
your local dealer.
EKHWE150A3V3 EKHWET150A3V3 EKHWE200A3V3 EKHWE200A3Z2 EKHWE300A3V3 EKHWE300A3Z2
Volume 150 l 150 l 200 l 200 l 300 l 300 l
Internal heat exchanger volume 2 l 2 l3l3l3l3l
Overall dimensions (Ø x H) 545 x 1150 mm 545 x 1150 mm 545 x 1525 mm 545 x 1525 mm 660 x 1525 mm 660 x 1525 mm
Booster heater, power supply 230 V 50 Hz 1P 230 V 50 Hz 1P 230 V 50 Hz 1P 400 V 50 Hz 2P 230 V 50 Hz 1P 400 V 50 Hz 2P
Booster heater, running current 13 A 13 A 13 A 7.5 A 13 A 7.5 A
Booster heater, capacity 3 kW 3 kW 3 kW 3 kW 3 kW 3 kW
Connections Refer to "Main components" on page 2
Weight (empty) 80 kg 82 kg 104 kg 104 kg 140 kg 140 kg
Mounting Floor Wall Floor Floor Floor Floor
Maximum pressure 10 bar 10 bar 10 bar 10 bar 10 bar 10 bar
Maximum domestic hot water
temperature 75°C 75°C 75°C 75°C 75°C 75°C
Maximum temperature through
heat exchanger 110°C 110°C 110°C 110°C 110°C 110°C

4PW43396-1B
Copyright © Daikin
*4PW43396-1 B 0000000S*