Rotex HPSU compact 304 Installation And Maintenance Manual

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FA ROTEX HPSU compact 4 - 06/2015
6 x Decommissioning
6 Decommissioning
6.1 Temporary shutdown
If the ROTEX HPSU compact is not needed for a long time, it can
be temporarily decommissioned.
ROTEX 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 ROTEX HPSU compact on the
water side, or
– suitable antifreeze measures must be take
n for the connected
heating system and hot water storage tank (e.g. draining).
6.1.1 Draining the storage tank
Ɣ Disconnect ROTEX HPSU compact from the power supply.
Ɣ Con
nect the drain hose to the KFE filling connection
(accessory KFE BA, 16 52 15) (fig. 6-1, pos. A) and run
to drainage point that is at least soil deep.
Tab. 6-1 Legend from fig. 6-1 to fig. 6-6
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.
Ɣ 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
catch
ing of escaping water,
– wearing appropriate protective clothing.
CAUTION!
A heating system which is shut down
can freeze in the
event of frost and may suffer damage.
Ɣ If there is any risk of frost, drain any water from the
decommissioned heating system.
Ɣ 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 an
d the power supply cannot
be guaranteed for just a few days, the unit's excellent
heat insulation means that the ROTEX HPSU compact
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
conn
ected heat distribution system.
If no KFE filling connection is available, the con-
nection piece (fig. 6-1, pos. C) can alternatively be
removed from the safety overflow (fig. 6-1, pos. B)
and used.
Once the drainage process is complete, this must
be replaced before the heating system can be
started again.
Fig. 6-1 Connecting the drain-
age hose
Optional: Removing the connec-
tion piece from the safety overflow
A KFE filling connection (ac-
cessory KFE BA,
16 52 15)
B Safety overflow
C Hose connection piece for
safety overflow
D Clamping piece
E Threaded piece
F Sealing plug
G Connecting angle
X Valve insert
Ɣ Remove the cover plate
from the filling and
emptying fitting.
Ɣ W
hen using the KFE
filling connection
(accessory KFE BA,
16 52 15):
Remove the cover plate
fro
m the handle and
unscrew the threaded
piece (fig. 6-2, pos. E)
from the storage tank con-
tainer.
Fig. 6-2 Unscrew threaded piece
E

Rotex HPSU compact 304 Specifications

General

Brand	Rotex
Model	HPSU compact 304
Category	Controller
Language	English