Daikin EKHWMX500CA [21/68] X set up and installation

Daikin EKHWMXB300CA [21/68] X set up and installation
Fig. 4-18 Supporting rear-facing hydraulic lines
4 x Set-up and installation
Daikin Altherma M ECH
2
O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
Installation and maintenance instructions
21
Connect the water for filling or refilling the heating system
as per EN
1717 so that contamination of the drinking
water due to return flow is reliably prevented.
Connect the drain line to the safety overpressure valve and
diaphragm expansion vessel as per EN 12828.
Check the seat of the drain hose on the pressure relief
valve.
If necessary, connect and install a separate hose.
Carefully insulate pipework against heat loss and to avoid
condensation (insulation thickness at least 20 mm).
Water shortage protection: the controller's pressure and
temperature monitoring function shuts off the Daikin Altherma
M ECH
2
O reliably if there is a shortage of water. No additional
water shortage protection is needed in the construction.
Damage due to deposits and corrosion: observe the rele-
vant technical rules to avoid corrosion products and deposits.
Minimum requirements regarding the quality of filling and sup-
plementary 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-values (heating water): 6.5 - 8.5
Measures for desalination, softening, hardness stabilisation or
other suitable conditioning measures are necessary to adhere to
the required water quality if the filling and top-up water have a
high overall hardness or other properties that deviate from the
minimum requirements.
WARNING!
There is a danger of scalding at hot water tem-
peratures over 60 °C. This is possible when
using solar energy if an external heater is con-
nected, the Legionella protection is activated, or
the target hot water temperature is set to be
greater than 60 °C.
Install scalding protection (hot water mixing
facility (e.g. VTA32 + Screw set 1").
Connect the drain hose to the hose connector for the safety
overflow (fig. 3-1 to fig. 3-3, item 23).
Use transparent drain hose (draining water must be visi-
ble).
Connect the drain hose to an adequately dimensioned
waste water installation.
Drain should not be lockable.
Fig. 4-19 Installation of drain hose at safety overflow
Connect the discharge fitting on the cover (fig. 3-3, item 30)
to the waste water installation with the enclosed hose section.
Connecting a diaphragm expansion vessel (see fig. 4-20)
Connect a suitably dimensioned and preset diaphragm
expansion vessel for the heating system. There must not
be any hydraulic blocking elements between the heat
generator and the safety valve.
Position the diaphragm expansion vessel in an easily
accessible place (maintenance, parts replacement)
Fig. 4-20 Mounting the diaphragm expansion vessel

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