Use As Intended; Instructions For Operating Safety; Before Working On The Hot Water Storage Tank And The Heating System; Electrical Installation Of Optional Accessories - Daikin EKHWP300B Installation And Operating Instructions Manual

2 x Safety

2.3 Use as intended

The Daikin EKHWP / EKHWC / EKHWD may
only be used as a hot water storage tank. The
Daikin EKHWP / EKHWC / EKHWD must be in-
stalled, connected and operated 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.
Only those electric immersion heaters supplied
by Daikin may be used.
Any other use outside the intended use is con-
sidered as improper. The operator alone shall
bear responsibility for any resulting damage.
Intended use also includes compliance with the
maintenance and service conditions. Re-
placement parts must at least satisfy the tech-
nical requirements defined by the manufacturer.
This is the case, for example, with the use of
original replacement parts.

2.4 Instructions for operating safety

2.4.1 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.
● Make sure that the safety valves comply with
the requirements of EN 12828 when
connecting on the heating side, and with the
requirements of EN 12897 when connecting
on the domestic water side.
● Only original Daikin replacement parts may be
used.
Installation and operating instructions
6
2.4.2 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 installations may only be carried out
by qualified electrical technicians under
observance of the relevant electrical guide-
lines and the regulations of the electric utilities
company.
● For each hard wired 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.

2.4.3 Housing installation room

For safe and fault-free operation, it is necessary
that the installation location of the Daikin
EKHWP / EKHWC / EKHWD fulfils certain cri-
teria. Information on the installation location for
the high-performance hot water storage tank can
be found in chapter 4.2 "Installation".
Information on the installation site of other com-
ponents can be found in the associated docu-
mentation supplied with them.
2.4.4 Requirements of the heating and filling
water
Observe the current technological regulations to
prevent corrosion products and deposits.
Minimum requirements regarding the quality
of filling and supplementary water:
– Water hardness (calcium and magnesium,
calculated as calcium carbonate): 
≤ 3 mmol/l
– Conductivity: ≤ 1500 (ideal ≤ 100) μS/cm
– Chloride: ≤ 250 mg/l
– Sulphate: ≤ 250 mg/l
– pH value (heating water): 6.5 - 8.5
Use of filling water and top-up water which 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.
Daikin EKHWP/EKHWC/EKHWD
Daikin High-efficiency hot water storage tank
008.1618744 – 03/2017