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6
Taking out of operation
WARNING!
When opening the solar return connection and
the heating and hot water connections, there is
a danger of scalding and overflooding from
escaping hot water.
● Only empty storage tanks or the heating
system
– if they have cooled for a sufficient period of
time
– with a suitable fixture for safely draining or
collecting the escaping water
– with suitable protective clothing.
6.1 Temporary shutdown
CAUTION!
A heating system which is shut down can freeze
in the event of frost and may suffer damage.
● Drain the water out of the shutdown heating
system if there is a danger of frost.
● If the heating system is not drained, the
power supply must be ensured and the
external main switch must remain switched
on if there is a danger of frost.
If the Daikin Altherma M ECH
can be temporarily decommissioned.
However, Daikin recommends not disconnecting the system from
the power supply but merely switching it to "Stand-by mode" (see
controller operating instructions).
The system is then protected from frost. The pumps and valve
protection functions are active.
If it is not possible to guarantee the power supply when there is
danger of frost,
– completely drain the Daikin Altherma M ECH
side, or
– suitable antifreeze measures must be applied to the con-
nected heating system and hot water storage tank (e.g. drain-
ing).
If there is a danger of frost and the power supply cannot
be guaranteed for just a few days, the unit's excellent
heat insulation means that the Daikin Altherma M
ECH
O does not have to be drained on the water side,
2
provided that the storage tank temperature is monitored regu-
larly and does not fall below +3 °C.
However, there is no frost protection for the connected heat dis-
tribution system through this.
Daikin Altherma M ECH
O
2
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
O is not needed for a long time, it
2
O on the water
2
6
x
Taking out of operation
6.1.1 Draining the storage tank
● Disconnect the Daikin Altherma M ECH
supply.
● Connect a drain hose to the KFE filling connection
(accessory KFE BA) (fig. 6-1, item A) and lay to a drainage
point at least at ground level.
If no KFE filling connection is available, the con-
necting piece (fig. 6-1, item C) can be detached
from the safety overflow (fig. 6-1, item B) and used.
This must be re-installed after the draining process before
the heating system is put back in operation.
Fig. 6-1
Installing the draining
hose
A
KFE filling connection
(accessory KFE BA)
B
Safety overflow
C
Hose connecting piece for
safety overflow
D
Clamping piece
Tab. 6-1 Legend for fig. 6-1 to fig. 6-6
Without
solar system
● Remove the cover panel
on the filling and draining
connection.
● When using the KFE
filling connection
(accessory KFE BA):
Remove the cover panel
on the handle and
unscrew the threaded
piece (fig. 6-2, item E)
from the storage tank.
● Insert the KFE filling connection in the threaded piece
(fig. 6-3, item E) and secure with the clamping piece (fig. 6-3,
item D).
● Place a suitable collecting tray under the filling and draining
connection.
O from the power
2
Optional: Detaching the connect-
ing piece from the safety overflow
E
Threaded piece
F
Sealing plug
G
Connection bracket
X
Valve insert
E
Fig. 6-2
Unscrewing the
threaded piece
Installation and maintenance instructions
37
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