11
x
Taking out of operation
11 Taking out of operation
11.1 Temporary shutdown
If no heating and no hot water supply is needed over a long
period the ROTEX GCU compact can be temporarily shut down.
However, ROTEX recommends putting the system into standby
mode (see the documentation concerning "ROTEX controller).
The heating system is then protected from frost. The pumps and
valve protection functions are active.
If it is not possible to guarantee the gas and power supply when
there is danger of frost, then
– the GCU compact is completely drained
– suitable antifreeze measures must be taken for the connected
heating system and hot water storage tank (e.g. draining).
11.1.1 Draining the storage tank
●
Switch off the main switch and secure against restarting.
●
Close the gas stop valve.
●
Connect a drain hose to the
KFE filling connection
(accessory KFE BA,
16 52 15)
(fig. 11-1, item A) and
lay to a drainage point at least at ground level.
Tab. 11-1 Legend for fig. 11-1 to fig. 11-6
Without
solar system
●
Remove the cover panel on the filling and draining
connection.
●
When using the KFE filling connection (accessory
KFE BA,
16 52 15):
Remove the cover panel on the handle and unscrew the
threaded piece (fig. 11-2, item E) from the storage tank.
●
Insert the KFE filling connection in the threaded piece
(fig. 11-3, item E) and secure with the clamping piece
(fig. 11-3, item D).
●
Place a suitable collecting tray under the filling and draining
connection.
●
Unscrew the threaded piece on the filling and draining
connection (fig. 11-4, item E), remove the sealing plug
(fig. 11-4, item F)
and immediately
screw in
the pre-
installed threaded insert with
KFE filling connection
again
into the filling and draining connection (fig. 11-4).
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.
CAUTION!
A heating system which is shut down can freeze in the event of
frost and may suffer damage.
●
Drain the heating system that is shut down if there is danger
of frost.
●
If the heating system is not drained, the gas and power
supplies must be secured and the main switch must remain
switched on.
If the danger of frost exists for only a few days, with un-
certainly in the gas and power supply, you can leave out
the draining of the ROTEX GCU compact because the
thermal insulation is excellent, as long as the storage
tank temperature is observed regularly and does not fall below
+ 3 °C.
However, there is no frost protection for the connected heat dis-
tribution system through this.
If no
KFE filling connection
is available, the con-
necting piece (fig. 11-1, item C) can be detached
from the safety overflow (fig. 11-1, item B) and
used.
This must be re-installed after the draining process
before the heating system is put back in operation.
Fig. 11-1 Installing the draining
hose
Optional: Detaching the connect-
ing piece from the safety overflow
A
KFE filling connection (ac-
cessory KFE BA,
16 52 15)
B
Safety overflow
C
Hose connecting piece for
safety overflow
D
Clamping piece
E
Threaded piece
F
Sealing plug
G
Connection bracket
H
Spanner
X
Valve insert
Fig. 11-2 Unscrewing the threaded piece
CAUTION!
After removing the sealing plug, storage tank water surges out.
There is no valve or check valve on the filling and draining con-
nection.
Содержание GCU compact 315
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