Operating instructions
30
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1420944 – 05/2014
5
x
Decommissioning
5 Decommissioning
5.1 Temporary shutdown
If the Daikin Altherma EHS(X/H) is not required for a long time, it
can be temporarily decommissioned.
Daikin therefore recommends that you do not disconnect the
system from power supply, but rather only place it in "Stand-By
Mode" (consult the operating manual for the control system).
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 discharge the Daikin Altherma EHS(X/H) on the
water side, or
– suitable antifreeze measures must be taken for the connected
heating system and hot water storage tank (e.g. draining).
5.1.1 Draining the storage tank
●
Daikin Disconnect the Altherma EHS(X/H) from the power
supply.
●
Connect the outlet hose to the
KFE filling connection
(Accessory KFE BA)
(fig. 5-1, item A) and run to a drainage
point that is at least soil deep.
Tab. 5-1 Legend from fig. 5-1 to fig. 5-6
Without
solar installation
WARNING!
Danger of scalding and flooding
when opening the
solar return flow coupling or heating and hot water
pipes due to escaping hot water.
●
Only drain the storage tank container or heating
system
– when they have been left to cool sufficiently,
– with a suitable device for the safe draining or
catching of escaping water,
– wearing appropriate protective clothing.
CAUTION!
A heating system that is shut down can freeze in the
event of frost and may suffer damage.
●
If there is any risk of frost, drain any water from the
decommissioned heating system.
●
If the heating system is not drained and there is a
risk of frost, the power supplies must be secured
and the external main switch must remain switched
on.
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
EHS(X/H) does not have to be drained, provided that
the storage tank temperature is monitored regularly and
does not fall below +3 °C.
However, this does not provide frost protection for the
connected heat distribution system.
If no
KFE filling connection
is available, the con-
nection piece (fig. 5-1, item C) can be removed from
the safety overflow (fig. 5-1, item B) and used.
Once the drainage process is complete, this must
be replaced before the heating system can be
started again.
Fig. 5-1
Connecting the drain-
age hose
Optional: Removing the connec-
tion piece from the safety overflow
A
KFE filling connection (Ac-
cessory KFE BA)
B
Safety overflow
C
Connection piece for safety
overflow
D
Clamping piece
E
Threaded piece
F
Sealing plug
G
Connecting angle
X
Valve insert
●
Remove the cover plate
from the filling and
emptying fitting.
●
When using the KFE
filling connection
(Accessory KFE BA):
Remove the cover plate
from the handle and
unscrew the threaded
piece (fig. 5-2, item E)
from the storage tank con-
tainer.
Fig. 5-2
Unscrew threaded piece
A
C
1.
2.
B
B
C
E
D
E
