INSTALLATION MANUAL
Domestic hot water tank for air to water heat
pump system
EKHWE150A3V3
EKHWET150A3V3
EKHWE200A3V3
EKHWE300A3V3
EKHWE200A3Z2
EKHWE300A3Z2
5
0
45
350
50
0
30
30
00
0
5
5
50
355440
300
50
D1
50
5
80
525
925
80
525
851
0
3
0200300
1
123 5
4
67
1x 1x 2x 4x 1x 1x 1x
1
2
EKHWE150~
EKHWET1
7
4
A
H
H4
H5
Ø D1
400
1
7
1
2
1
~4
16
15
11
77
2
255
545
1
35
2
410
545
1
21
410
35
27
660
2
3
3
EKHWE150A3V3 EKHWET150A3V3
EKHWE200A3V3 EKHWE200A3Z2
EKHWE300A3V3 EKHWE300A3Z2
Domestic hot water tank
for air to water heat pump system
Installation manual
CONTENTS 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................................................................................................. 4
Commissioning.................................................................................. 6
Maintenance...................................................................................... 7
Troubleshooting ................................................................................. 7
General guidelines..................................................................................... 7
General symptoms..................................................................................... 7
Technical specifications..................................................................... 7
Domestic hot water tank specifications...................................................... 7
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.
INTRODUCTION
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 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
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
ACCESSORIES
Accessories supplied with the domestic hot water tank
See figure 1
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
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.
EKHWE150~300A3V3 + EKHWE200+300A3Z2
Domestic hot water tank for air to water heat pump system
4PW43396-1G – 2015.11
Installation manual
1
INSTALLATION OF THE EKHWE DOMESTIC HOT
WATER TANK
Main components
■ The total system is designed for
combination with an domestic
hot water tank. In case another tank is being used in
combination with the 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.
■ 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.
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.
2
3
1
4
1 Cold water connection
2 Hot water connection
3 Shunt pump (field supply)
4 Non-return valve
(field supply)
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.
3
2
4
14
4
A
5
13
1
6
7
11
15
16
12
8
9
10
1 Anode
2 Hot water connection (3/4" MBSP)
3 Pressure relief valve connection (1/2" MBSP)
4 Electrical box
5 Recirculation hole (3/4" MBSP)
6 Thermistor socket
7 Heat exchanger inlet (3/4" FBSP)
8 Heat exchanger coil
9 Heat exchanger outlet (3/4" FBSP)
10 Cold water connection (3/4" MBSP)
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 unit
16 Cable entry for use with optional solar kit.
(a) MBSP = Male British Standard Pipe
(b) FBSP = Female British Standard Pipe
(a)
(a)
(b)
(b)
(a)
A
(a)
1 Shower
1
2
2 Recirculation pump
If required connect a recirculation pump in between the hot water end
point and the recirculation hole in the domestic hot water tank.
Installation manual
2
Domestic hot water tank for air to water heat pump system
EKHWE150~300A3V3 + EKHWE200+300A3Z2
4PW43396-1G – 2015.11
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