Removing The Refrigeration Circuit Cover; Carrying Out The Hydraulics Installation; Requirements For The Heating Circuit - Vaillant flexoTHERM exclusive VWF 117/4 Installation And Maintenance Instructions Manual

6 Carrying out the hydraulics installation

B
A
2. To remove a side casing, remove the four screws at the
front and the three screws at the back.
3. Remove the side casing.
5.10

Removing the refrigeration circuit cover

A
B
1. Remove the four screws.
2. Pull the top of the refrigeration circuit cover forwards
and lift it out of the guide.
16
6 Carrying out the hydraulics
installation
A
1. If you want to carry out active cooling using ground as
B
the heat source, make sure that the borehole/ground
sensor is suitable for this purpose and observe the na-
tional directives and laws. The use of ground collectors
for active cooling is prohibited.
2. Flush the heating installation through thoroughly be-
fore connecting the heat pump in order to remove any
residue which could be deposited in the heat pump and
lead to damage.
3. Install the supply lines (disconnected from the power
supply) in accordance with the dimension and connec-
tion drawings.
–
–
–
–
4. Attach automatic purging valves to the heating installa-
tion.
6.1
In heating installations that are equipped primarily with ther-
mostatic or electrically controlled valves, a constant and suf-
ficient flow through the heat pump must be ensured. Irre-
spective of which heating installation is selected, the min-
imum volume of circulating heating water (35% of the nom-
inal flow; see the Technical data table) must be guaranteed.
Installation and maintenance instructions flexoTHERM exclusive 0020213394_01
Note
You can find the system diagram in the → system
diagram book.
Position the pipe brackets for securing the heating
circuit and brine circuit piping so that they are not
too close to the heat pump in order to prevent noise
transmission.
If required, instead of pipe brackets, use cold insu-
lation clamps with additional rubber insulation and,
in some cases, reinforced hoses (armoured rubber
hoses).
To prevent excessive pressure losses, do not use
stainless steel corrugated pipes.
If required, use horizontal or right-angled connection
adaptors from the accessories.
Note
The heat pump's compressor has two-fold
vibration insulation. This eliminates vibra-
tions in the coolant circuit that are inherent in
the system. However, under certain circum-
stances, residual vibrations may occur.

Requirements for the heating circuit