Daikin Altherma 3 ECH2O - Heating System and Sanitary Connection; Operation

1 General safety precautions
Installation and maintenance instructions
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Daikin Altherma EHS(X/H)(B)-D
Heat pump (indoor unit) with integrated heat accumulator
008.1444099_01 – 11/2018 – EN
KSK limescale and corrosion protector. For other properties deviat-
ing from the minimum requirements, suitable conditioning measures
are necessary to maintain the required water quality.
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 (TRWI).
▪ and, in addition, the country-specific legislation.
When operating the indoor unit with additional heat source, the stor-
age tank temperature may exceed 65°C, above all when solar en-
ergy is used.
▪ For this reason, some form of scalding protection needs to be in-
cluded when you install the system (hot water mixing device, e.g.
VTA32).
If the indoor unit is connected to a heating system with steel pipes,
radiators or non-diffusion-proof floor heating pipes, sludge and chips
can enter the hot water storage tank and cause blockages, local
overheating or corrosion damage.
▪ To prevent possible damage, install a dirt filter or sludge separator
into the heating return flow of the system (SAS 1 or SAS 2).
▪ The dirt filter must be cleaned at regular intervals.
1.2.7 Operation
The indoor unit:
▪ Do not operate until all installation and connection work is com-
pleted.
▪ Only operate with a completely full storage tank (Level indicator)
and heating circuit.
▪ Operate at a maximum pressure of 3bar.
▪ Only connect with a pressure reducer on the external water supply
(supply line).
▪ Only operate the with the specified quantity of coolant and the
type of coolant specified.
▪ only operate if the protective cover is installed.
The specified servicing intervals should be adhered to and inspec-
tion work must be carried out.