Daikin EKHWP300B [5/28] Proper use
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Daikin EKHWP300B [5/28] Proper use

Daikin EKHWP300B [5/28] Proper use
1 x Safety
Daikin EKHWP300+500
Daikin High-performance hot water storage tank
008.1618744 – 08/2015
Installation and maintenance manual
5
1.4 Proper use
The Daikin EKHWP may only be used as a hot water storage
tank. The Daikin EKHWP must be installed, connected and op-
erated only according to the information in this manual.
When connecting to a Daikin heat pump you must use only the
storage tank connection kits (E-PAC) provided for the purpose.
Daikin Only those electric immersion heaters supplied by ROTEX
may be used.
Any other use outside the intended use is considered as im-
proper. The operator alone shall bear responsibility for any re-
sulting damage.
Intended use also includes compliance with the maintenance and
se
rvice conditions. Spare parts must at least satisfy the technical
requirements defined by the manufacturer. This is the case, for
example, with the use of original replacement parts.
1.5 Instructions for operating safety
1.5.1 Before working on the hot water storage tank
and the heating system
● Work on the hot water storage tank and heating system (e.g.
installation, connection and initial start-up) should only be
carried out by authorised and trained heating experts.
● Switch
off the main switch before starting any work on the
domestic hot water storage tank and heating system and
secure it against unintentional switch-on.
● Seals
must not be damaged or removed.
● M
ake sure that the safety valves comply with the require-
ments of EN 12828 when connecting on the heating side, and
with the requirements of EN 12897 when connecting on the
domestic water side.
● Onl
y original Daikin replacement parts may be used.
1.5.2 Electrical installation of optional accessories
● Before beginning work on live parts, disconnect them from the
power supply (switch off main switch, remove fuse) and
secure against unintentional restart.
● Electrical instal
lations may only be carried out by qualified
electrical technicians under observance of the relevant
electrical guidelines and the regulations of the electric utilities
company.
● For
each hardwired power connection, install a separate
disconnector system compliant with EN 60335-1 for all-pole
disconnection from the power mains.
● Compare
the mains voltage indicated on the nameplate with
the supply voltage before connecting to the mains.
1.5.3 Installation room
For safe and fault-free operation, it is necessary that the instal-
lation location of the Daikin EKHWP fulfils certain criteria. Infor-
mation about the installation location for the high-performance
hot water storage tank can be found in High-performance hot
water storage tank chapter 3.2 "Installation".
Information on the installation site of other components can be
fou
nd in the associated documentation supplied with them.
1.5.4 Requirements of the heating and filling water
Observe the relevant regulations of technology to prevent cre-
ation of corrosion products and deposits.
Minimum requirements regarding the quality of filling and sup-
plementary water:
– Water hardness (calcium and magn
esium, calculated as
calcium carbonate): ≤ 3 mmol/l
– Conductivity: ≤ 1
500 (ideal ≤ 100) μS/cm
– Chloride: ≤ 250 mg/l
– Sulphate: ≤ 250 mg/l
– pH value (heating water): 6,5 - 8,5
Using filling water and top-up water whi
ch does not meet the
stated quality requirements can cause a considerably reduced
service life of the equipment. The responsibility for this lies solely
with the operator.
1.5.5 Heating and sanitary side connection
● Create a heating system according to the safety requirements
of EN 12828.
● With sanitary connection, you must observe;
–EN 1717 - Protection of domestic water from contamina-
tion in domestic water installations and general require-
ments concerning safety equipment for the prevention of
do
mestic water contamination by back-flow
–EN 806 - Technical regulations for domestic water instal-
lations (TRWI)
– and, in addition, the country-specific legal regulations.
The domestic water quality must comply with the
EU Guideline 98/83 EC and the regionaly-applicable
re
gulations.
The connection of a solar installatio
n, an electric heating rod or
an alternative heat generator may cause the storage temperature
to exceed 60 °C.
● F
or this reason you should fit scalding protection (e.g. VTA32
+ Screw connection set 1") during installation.
● Use a pressure reducer if the cold water connection pressure
>6 bar.
If the Daikin EKHWP is connected to
a heating system with steel
pipes, radiators or non-diffusion-proof floor heating pipes, slurry
and swarf could enter the hot water storage tank and cause
blockages, local overheating or corrosion.
● T
o prevent possible damage, fit a dirt filter or sludge
separator into the heating return flow of the system.
– SAS 1
1.5.6 Operation
● Only operate the Daikin EKHWP;
– After all installation and connection work has been com-
pleted.
– With fully installed equipment covers and service
ac
cesses.
– With sanitary side pressure reducers installed
(max. 6 bar).
– With heating side pressure reducers installed
(max. 3 bar).
– With completely filled storage contai
ners (fill level dis-
play).
The specified servicing intervals should be adhered to and in-
spection work must be carried out.

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