4
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Set-up and installation
●
For potable water lines, comply with the provisions of EN 806,
the also applicable national guidelines for potable water
installation and the information in accordance with
chap. 1.2.6.
●
Install the ROTEX GCU compact close to the withdrawal
point to dispense with the need for a circulation line. If a circu-
lation line is essential, it must be installed in accordance with
the schematic diagrams in chap. 8.1.
4.6.1 Aligning the connections of the heating supply
and return
The connections of the heating supply and return can be directed
upwards or backwards in order to adapt it optimally to the struc-
tural conditions of the installation site.
The device is supplied with upwards aligned connections as
standard. The following conversion steps are required in order to
direct the connections to the rear out of the device:
●
Remove the protective cover and top thermal insulation (see
chap. 4.4.3).
●
Pull the two stirrups off the connection couplings (fig. 4-19,
item C).
●
Pull off the two connection couplings (fig. 4-19, item B).
●
Remove the retaining plate (fig. 4-19, item A).
●
Pull off the sealing plug stirrup (fig. 4-19, item D).
●
Pull out the sealing plug (fig. 4-19, item E).
●
Turn the elbow (fig. 4-19, item H) 90° to the rear.
●
Pull the stirrup off the manifold (fig. 4-19, item G).
●
Carefully pull the manifold (fig. 4-19, item F) so far backwards
out of its horizontal mounting that the retaining plate
(fig. 4-22, item A) can be pushed vertically in between.
In accordance with EN 12828 a safety valve that limits
the maximum permissible operating pressure in the
heating system must be installed on or in the immediate
vicinity of the heat generator. There may not be any hy-
draulic blocking elements between the heat generator and the
safety valve.
Any steam or heating water which may escape must be drained
by a suitable blow-off line with constant gradient in a frost-pro-
tected, safe and observable manner.
A suitable safety valve is integrated in the GCU compact as
standard (see fig. 3-7, item 24). The blow-off line must be in-
stalled on the building side.
A diaphragm expansion vessel suitably sized and preset for the
heating system must be connected to the ROTEX
GCU compact. There may not be any hydraulic blocking ele-
ments between the heat generator and the diaphragm ex-
pansion vessel.
Fig. 4-19 Aligning the heating supply and return upwards
CAUTION!
When working on the hydraulics, pay attention to the installation
position of the O-rings to avoid damaging them and causing
leaks.
●
Always place O-rings on the part to be inserted after disas-
sembly or before assembly (see fig. 4-20).
●
The heating lines must be connected free of tension via the
plug connectors. Establish a suitable strain relief especially
when connecting with flexible lines (not open to diffusion!)
(see fig. 4-21).
Fig. 4-20 Hydraulic system plug connectors
Fig. 4-21 Tension-free line connection
Содержание GCU compact 315
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