5 x Decommissioning
BA ROTEX HPSU compact 4 - 09/2013
27
5 Decommissioning
5.1 Temporary shutdown
CAUTION!
A heating system which is shut down can freeze in the
event of frost and may suffer damage.
● If there is any risk of frost, empty any water from
the decommissioned heating system.
● If the heating system is not drained and there is the
risk of frost, the power supplies must be secured
and the external main switch must remain switched
on.
If the HPSU compact is not needed for a long time, it can be
temporarily decommissioned.
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 HPSU compact does not
have to be drained, provided that the storage tank tem-
perature is monitored regularly and does not fall
be
low +3 °C.
However, there is no frost protection for the connected
heat distribution system through this.
However, ROTEX advises against disconnecting the system
from the power supply, and recommends instead that you only
set the rotary switch 1 on the controller to "Standby".
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 HPSU compact on the water side,
or
– suitable anti-frost measures are taken.
Draining the storage tank
● Disconnect the HPSU compact from the power supply.
a) Without installed solar system
● Dismou
nt the safety overflow from the overflow
connection (fig. 2-2 to fig. 2-5, pos. 23) of the ROTEX
HPSU compact.
● Moun
t the safety overflow to the filling and drain
connection of the HPSU compact (fig. 2-2 to fig. 2-5,
pos. 10) (only this connection automatically opens the
foot valve) and drain the water content of the storage tank.
b) Only for the solar installation
● Dismou
nt the drain hose from the filling and drain
connection of the HPSU compact (fig. 2-2 to fig. 2-5,
pos. 23).
● C
onnect the drain hose to the KFE cock of the solar
return flow.
● Op
en the KFE cock of the solar return line, and drain
the water content of the storage tank.
Draining the heating circuit and hot water circuit
● Connect the drainage hose to the combined filling and
draining valve on the HPSU compact.
● Ope
n the combined filling and draining valve on the HPSU
compact.
● Allow
the heating and warm water circuit to run empty based
on the suction lifter method.
● Disco
nnect the heating flow and return flow as well as the cold
water inflow and the hot water outflow from the HPSU
compact.
● Con
nect the discharge hose on the heating flow and return
flow as well as the cold water inflow and hot water outflow so
that the hose opening is at ground level.
● Allo
w the individual heat exchangers to run empty one after
the other based on the suction lifter method.
5.2 Final shutdown
WARNING!
Cooling systems (heating pumps), climate control
systems and heating devices that are incorrectly dis-
mantled can both endanger life and health of people
and
be impaired in their function during start-up.
● Work on the HPSU compact (such as dismantling
components, temporary or final shutdown of
system) is only to be carried out by persons who
are authorised and who have successfully
completed qualifying technical or vocational
training and who have taken part in advanced
training sessions recognised by the relevant
responsible authorities. These include in particular
certified heating engineers, qualified electri-
cians and HVAC specialists,
who because of
their professional training and expert
knowledge, have experience in the professional
installation and maintenance of heating, cooling
and air conditioning systems and heat pumps.
● You mu
st observe the warning and safety
instructions in the installation manual on working
in the coolant system.
A final shutdown may be necessary if
– the system is defective and is being dis
mantled and disposed
of.
– components of the system are defective, are being disman-
tled and replaced.
– the system or parts of the system are being dis
mantled and
reassembled in another location.
The ROTEX HPSU compact is designed to be environmentally
fri
endly and easy to install: the jobs described above can
therefore be carried out in an efficient and environmentally-
friendly manner.
When changing locations or replacing parts on the coolant
system in the pip
e network:
● Pump the coolant back into the external heat pump unit
(see installation and operating guide for the particular
externa
l heat pump unit).
When disposing of the machine or replacing parts in the coolant
sys
tem:
● Vacuum coolant from the machine and recycle (see instal-
lation and operating guide for the particular external heat
pu
mp unit).
To Next Page
Loading...
