Water Connection - Rotex GCU compact 315 Installation And Maintenance Instructions Manual

4 x Set-up and installation
Additional kits
– Flue gas connection to a shaft system (rigid flue gas line
SET E or flexible flue gas line SET O)
– Flue gas connection for external wall line (SET G)
If necessary, additionally needed concentric LAS pipes for in-
creased roof or ceiling heights, single wall PP pipes for flue
heights of more than 10 m or additional accessory components
must be ordered.
The three-digit numbers in fig. 4-18 assist in finding individual
components in the ROTEX price list.

4.6 Water connection

The ROTEX GCU compact connections are located on the unit
top or front ( solar return flow). The heating circuit and
storage tank charging share the same flow and return flow. The
heating circuit for the storage tank charging is integrated at the
factory and must not be connected separately.
Important information
CAUTION!
If the ROTEX GCU compact is connected to a heating system
with steel pipes, radiators or non-diffusion-proof floor heating
pipes, slurry and swarf could enter the hot water storage tank
and cause blockages, local overheating or corrosion.
● Rinse supply lines before filling the device.
● Rinse out the heat distribution network (in the existing
heating system).
● Install a dirt filter or sludge separator in the heating return
flow (see chap. 1.2.6).
CAUTION!
If the ROTEX GCU compact is connected to a cold water line
where steel pipes are used, chips can go into the special steel
corrugated pipe heat exchanger and remain there. This can lead
to contact corrosion damage and subsequently to leakage.
● Flush the feed pipes before filling the heat exchanger.
● Install a dirt filter in the cold water supply.
– SAS 1 ( 15 60 21)
– SAS 2 ( 15 60 23)
CAUTION!
Only Biv
If the heat exchanger for charging the pressurised solar
system (see fig. 3-3 / fig. 3-6, item 19 + 20) is connected to an
external heating unit (e.g. wood-burning boiler), too high an
inflow temperature at these connections can damage or destroy
the ROTEX GCU compact.
● The inflow temperature of the external heating unit should
be limited to max. 95 °C.
CAUTION!
Corrosion may be caused by air entering the heating water
network and by a quality of the heating water that does not
comply with the requirements in accordance with chap. 1.2.5.
Corrosion products (particles) thus created may clog pumps and
valves and cause malfunctions.
● Equipment may not be connected by permeable, flexible
lines.