Daikin Altherma EKHWS-B3Z2 User manual

INSTALLATION MANUAL
EKHWS150B3V3
EKHWS200B3V3
EKHWS300B3V3
EKHWS200B3Z2
EKHWS300B3Z2
Domestic hot water tank for air to
water heat pump system

H4
H2
H3
110
H1
105°
73°
30°
5°
45°
15°
100
400
220
0
0~40 Ø580
300
1
6
9
7
2
3
8
4
5
2
1
1x 1x 2x 4x 1x
12 3 5 64
3/4" FBSP
3/4" FBSP
1/2" FBSP
3/4" FBSP
3/4" FBSP
62°
1x
+
2
1

EKHWS150~300B3V3 + EKHWS200+300B3Z2
Domestic hot water tank for air to water heat pump system
4PW44499-1D
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
Optional equipment.................................................................................... 1
Installation of the EKHWS 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
Maintenance......................................................................................6
Troubleshooting .................................................................................6
General guidelines ..................................................................................... 6
General symptoms..................................................................................... 6
Technical specifications.....................................................................7
Domestic hot water tank specifications...................................................... 7
I
NTRODUCTION
General information
Thank you for purchasing this domestic hot water tank.
The EKHWS domestic hot water tank with integrated 3 kW electrical
booster heater can be connected to the indoor unit. The domestic hot
water tank is available in three sizes: 150, 200 and 300 litre. All
models can be floor mounted, while the 150 litre model can be wall
mounted as well via option kit EKWBSWW150. 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 EKHWS domestic hot water tanks.
Model identification
A
CCESSORIES
Accessories supplied with the domestic hot water tank
See figure 1
Optional equipment
EKWBSWW150: kit, including a wall bracket for a domestic hot water
tank of 150 litres.
EKHWS150B3V3
EKHWS200B3V3 EKHWS200B3Z2
EKHWS300B3V3 EKHWS300B3Z2
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.
NOTE
Especially for the United Kingdom
For installation of an EKHWSU domestic hot water
tank, refer to the installation manual supplied with the
tank.
EK HWS 150 B 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
Hot Water tank Stainless steel
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 + motor
NOTE
For accessories supplied with the EKHWSU domestic
hot water tank, refer to the manual supplied with the
tank.

Installation manual
2
EKHWS150~300B3V3 + EKHWS200+300B3Z2
Domestic hot water tank for air to water heat pump system
4PW44499-1D
I NSTALLATION OF THE EKHWS 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.
Following descriptions are only for EKHWS*V3 and
EKHWS*Z2 models, not for EKHWSU*V3 models
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.
■ The equipment is not intended for use in a potentially
explosive atmosphere.
■ Only this tank can be used in combination with the
solar kit option.
■ 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.
■ Immediately after installation, the domestic hot water
tank must be flushed with fresh water. This procedure
must be repeated at least once a day the first 5
consecutive days after installation.
1Cold water connection
2Hot water connection
3Shunt pump
(field supply)
4Non-return valve
(field supply)
1
23
4
2
1
1Shower
2Recirculation pump
1 Field supply
2 Hot water connection
3 Pressure relief valve connection
4 Pressure relief valve (field supply)
5 Electrical box
6 Electrical box lid
7 Recirculation hole
8 Thermistor socket
9 Flow inlet connection
10 Heat exchanger coil
11 Return outlet connection
12 Cold water connection
13 Threaded thermistor hole for use with solar kit option. Refer to the
Installation manual EKSOLHWAV1.
C
R
F
14
23
H
5
6
7
8
9
10
13
11
12

EKHWS150~300B3V3 + EKHWS200+300B3Z2
Domestic hot water tank for air to water heat pump system
4PW44499-1D
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 lid).
■ 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.
■ 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.
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.
■ 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.
■ Take care that in the event of a leak, water can not cause any
damage to the installation space and surroundings.
■ The domestic hot water tank model
EKHWS(U)150B3V3 can be floor or wall
mounted. In case of wall mounting, wall
mounting kit EKWBSWW150 is required
(separate ordering).
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. When wall mounting (only for EKHWS(U)150B3V3
model), make sure the wall is sturdy. In both cases, make sure
the domestic hot water tank is mounted level.
3 Apply thermal paste to the thermistor and insert the thermistor
as deep as possible in the thermistor socket. Fix using the nut
provided.
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.
Connecting the 3-way valve
1 Refer to the figure below 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 in accordance with one of 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.
1 Hot water and pressure relief valve connection
2 Recirculation hole
3 Flow inlet connection from the main indoor unit
4 Return outlet connection to the main indoor unit
5 Cold water connection
6 Domestic hot water tank electrical box cable entry
7 Thermistor socket
8 Threaded thermistor hole for use with solar kit option. See
Installation manual EKSOLHWAV1.
9 Domestic hot water tank electrical box cable entry for use with
optional solar kit
Domestic hot water tank model H1 H2 H3 H4
EKHWS150B3V3 900 475 185 605
EKHWS200B3V3/Z2 1150 630 200 830
EKHWS300B3V3/Z2 1600 630 200 830
figure A figure B
figure C figure D
1
From
AD
indoor unit
2 To domestic hot water tank
3 To room heating
13
77
111
38 67
44 44
1
2
3
1
3
2
1
2
3
1
3
2

Installation manual
4
EKHWS150~300B3V3 + EKHWS200+300B3Z2
Domestic hot water tank for air to water heat pump system
4PW44499-1D
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.
•Put the sleeve on the valve and turn the valve to the middle
position 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 in accordance with figure A or figure D, open the
valve motor cover by loosening the screw and change the
jumper so as to change the rotation direction of the valve.
By default the jumper is factory set to apply for installation in
accordance with figure B and figure C.
6 Push the motor on the motor sleeve.
Make sure not to rotate the sleeve during this action, so as to
maintain the valve position as set during step 4.
7
8 Put the scale on the valve as shown below.
9 Make sure to firmly fix the power supply cord onto the 3-way
valve body with a field supplied cable tie like in illustration below.
10 Perform the wiring in the indoor unit in accordance with the
following figure:
Refer also to the drawing on page 6.
11 Connect the water inlet and water outlet.
12 Connect the hot and cold water supply tubes.
13 Connect the pressure relief valve (field supply, opening pressure
maximum 10 bar) and drain.
1Sleeve
2Valve motor cover
3Screw
4Scale
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
Rotation direction of the valve
123
4
L
N
Y
DIR
2P
Domestic hot
water tank Room heating Room heating Domestic hot water tank
Installation in accordance with
figure B and figure C Installation in accordance with figure A and figure D
8910
3-way valve
BRN BLU BLK
LNY
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.

EKHWS150~300B3V3 + EKHWS200+300B3Z2
Domestic hot water tank for air to water heat pump system
4PW44499-1D
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 cable
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 for EKHWS*V3 and EKHWS*Z2
Connections to be made in the domestic hot water tank
electrical box
1Refer to the wiring diagram sticker in the domestic hot water
tank switch box.
2Make sure to ensure strain relief of the cable by correct use of
the PG nipple and PG nut (mounted on the domestic hot water
tank).
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.
■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.
Make sure all field wiring is insulated from the tank body
and heater element or can resist temperatures to 90°C.
Switch off the power supply before making any
connections.

Installation manual
6EKHWS150~300B3V3 + EKHWS200+300B3Z2
Domestic hot water tank for air to water heat pump system
4PW44499-1D
Note: only relevant field wiring is shown. 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.
The described checks must be executed at least once a year.
1Domestic hot water tank pressure relief valve (field supply)
Check for correct operation of the pressure relief valve on the
domestic hot water tank.
2Domestic hot water tank booster heater
It is advisable to remove lime buildup on the booster heater to
extend its life span, especially in regions with hard water. To do
so, drain the domestic hot water tank, remove the booster heater
from the domestic hot water tank and immerse in a bucket (or
similar) with lime-removing product for 24 hours.
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
A4P
K6M
F2B
K3M
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
X4M
X3M
230 V AC
3 kW
L N
400 V AC
3 kW
L1 L2
V3
Z2
3 way
valve
L
BRN BLU BLK
N Y
■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.
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).
•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.

EKHWS150~300B3V3 + EKHWS200+300B3Z2
Domestic hot water tank for air to water heat pump system
4PW44499-1D
Installation manual
7
Symptom 3: Intermittent water discharge
TECHNICAL SPECIFICATIONS
Domestic hot water tank specifications
POSSIBLE CAUSES CORRECTIVE ACTION
Thermal control failure (water will be
hot). Switch off power to the indoor unit. When discharge has stopped, check
the thermal controls and replace if
faulty.
Contact your local dealer.
The expansion vessel is broken. Replace the expansion vessel.
EKHWS150B3V3 EKHWS200B3V3 EKHWS200B3Z2 EKHWS300B3V3 EKHWS300B3Z2
Volume 150 l 200 l 200 l 300 l 300 l
Internal heat exchanger volume 2 l 3 l3l3l3l
Overall dimensions (Ø x H) 580 x 900 mm 580 x 1150 mm 580 x 1150 mm 580 x 1600 mm 580 x 1600 mm
Booster heater, power supply 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 7.5 A 13 A 7.5 A
Booster heater, capacity 3 kW 3 kW 3 kW 3 kW 3 kW
Connections 3/4" FBSP(a) 3/4" FBSP(a) 3/4" FBSP(a) 3/4" FBSP(a) 3/4" FBSP(a)
Weight (empty) 37 kg 45 kg 45 kg 59 kg 59 kg
Mounting Wall or floor Floor Floor Floor Floor
(a) FBSP = Female British Standard Pipe

4PW44499-1D
Copyright © Daikin