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4
x
Set-up and installation
Fig. 4-10 Removing the bottom thermal insulation
The thermal insulation is installed in reverse order.
4.4 Water connection
CAUTION!
If the Daikin Altherma M ECH
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.
● Flush the feed pipes before filling the heat
exchanger.
● Rinse out the heat distribution network (in the
existing heating system).
● Install a dirt filter or sludge separator in the
heating return flow (see chap. 2.4.4).
Installation and maintenance instructions
18
O is connected to
2
CAUTION!
If the Daikin Altherma M ECH
a cold water supply line in which steel pipes are
used, swarf can enter the stainless steel corru-
gated tube heat exchanger and remain there.
This can lead to contact corrosion damage
and subsequently to leakage.
● Flush the feed pipes before filling the heat
exchanger.
● Install a dirt filter in the cold water supply (see
chap. 2.4.4).
EKHWMXB300C AND
EKHWMXB500C ONLY
CAUTION!
If the heat exchanger for pressurised solar
system charging (fig. 4-1 / fig. 4-2, items 8+9)
is connected to an external heater (e.g. wood-
burning boiler), the Daikin Altherma M ECH
can be damaged or destroyed due to an exces-
sively high feed temperature at these connec-
tions.
● The inflow temperature of the external heat-
ing unit should be limited to max. 95 °C.
In accordance with EN 12828 a safety valve that limits
the maximum permissible operating pressure in the
heating system must be installed on or in the immediate
vicinity of the heat generator. There may not be any
hydraulic blocking elements between the heat generator and the
safety valve.
Any steam or heating water which may escape must be drained
by a suitable blow-off line with constant gradient in a frost-pro-
tected, safe and observable manner.
A diaphragm expansion vessel suitably sized and preset for the
heating system must be connected to the Daikin Altherma M
ECH
O. There may not be any hydraulic blocking elements
2
between the heat generator and the diaphragm expansion ves-
sel.
Daikin recommends installing a mechanical pressure gauge for
filling the heating system.
● Observe the stipulations of EN 806 and DIN 1988 for domes-
tic water pipes.
● Install the Daikin Altherma M ECH
point to dispense with the need for a circulation line. If a cir-
culation line is mandatory, it must be installed according to
the schematic diagrams in chap. 9 "Hydraulic system connec-
tion".
O is connected to
2
O
2
O close to the withdrawal
2
Daikin Altherma M ECH
O
2
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
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