Daikin FLOSTO150 [6/24] Requirements for the filling water
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Daikin FLOSTO150 [6/24] Requirements for the filling water

Daikin FLOSTO150 [6/24] Requirements for the filling water
1 General safety precautions
Installation and operating instructions
6
Daikin FLOSTO150
Hot water storage tank
008.1632099_00 – 03/2019 – EN
Intended use also includes compliance with the maintenance and in-
spection conditions. Replacement parts must at least satisfy the
technical requirements defined by the manufacturer. This is the
case, for example, with original spare parts.
1.2.3 Device installation room
For safe and fault-free operation, the installation location of the hot
water storage tank must fulfil certain criteria. Information on the in-
stallation location for the hot water storage tank can be found in
Chap. 4.1.
Information on the installation location of other components can be
found in the associated documentation supplied with them.
1.2.4 Electrical installation
▪ 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 elec-
trical technicians under observance of the relevant electrical
guidelines and the regulations of the electric utilities company.
▪ For each hard-wired power connection, install a separate discon-
nector system compliant with EN60335-1 for all-pole disconnec-
tion from the power mains.
▪ Compare the mains voltage indicated on the nameplate with the
supply voltage before connecting to the mains.
1.2.5 Requirements for the filling water
Avoid damage caused by deposits and corrosion: Comply with the
applicable engineering regulations on the prevention of corrosion
products and deposits (VDI 2035, BDH/ZVSHK technical information
"Scale formation").
Measures for desalination, softening or hardness stabilisation are
necessary if the filling and top-up water have a high total hardness
(>3mmol/l - total of the calcium and magnesium concentrations, cal-
culated as calcium carbonate).
Minimum requirements regarding the quality of filling and top-up wa-
ter:
▪ 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
Measures for desalination, softening or hardness stabilisation or
other suitable conditioning measures are necessary to maintain the
required water quality if the filling and top-up water have a high total
hardness or other properties divergent from the minimum require-
ments.
It is recommended to install the DRELECANODEA external current
anode.
Using filling water and top-up water which does not meet the stated
quality requirements can cause a considerably reduced service life
of the device. The responsibility for this lies solely with the operator.
1.2.6 Heating system and sanitary connection
▪ Create a heating system according to the safety requirements of
EN12828.
▪ The plumbing connection must comply with the requirements of
EN12897. The requirements of the following must also be ob-
served:
▪ EN1717 – Protection against pollution of potable water installa-
tions and general requirements of devices to prevent pollution
by backflow
▪ EN61770 – Electric appliances connected to the water mains –
Avoidance of backsiphonage and failure of hose-sets
▪ EN806 – Specifications for installations inside buildings con-
veying water for human consumption
▪ and, in addition, the country-specific legislation.
INFORMATION
The domestic water quality must comply with the EU
Guideline 98/83EC and the regionally-applicable regula-
tions.
The connection of an electric immersion heater or an alternative heat
generator may cause the storage temperature to exceed 60°C.
▪ Scalding protection (e.g. VTA32 + screw connection set 1") must
therefore be fitted during installation.
▪ Use a pressure reducer if the cold water connection pressure
>6bar.
1.2.7 Operation
Only operate the hot water storage tank:
▪ After all installation and connection work has been completed.
▪ With fully installed device covers.
▪ With sanitary side pressure reducers installed (max. 6bar).
▪ With heating side pressure reducers installed (max. 3bar).
▪ With completely filled storage containers (fill level display).
The specified servicing intervals should be adhered to and inspec-
tion work must be carried out.

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