© Danfoss | 2021.06| 11LGB40450
Termix VVX-I-R FI - 7 Series DS fully insulated
Mounting and installation
Hanging and fastening
It must be ensured that both the wall and the fastenings of the unit
can bear the unit’s gross weight.
Please refer to the section “Technical specifications”.
Re-tightening
As the unit has been subjected to vibrations during transit it is
important that all screw fittings are re-tightened.
The existing installation should be flushed out prior to installation.
Follow the symbols indicated on the heat interface unit for correct
connection of the pipes. Please refer to the section “Key to symbols”.
Adequate space
Please allow adequate space around the heat interface unit for mounting
and maintenance purposes.
Orientation
The unit must be mounted so that components, keyholes and labels are
placed correctly. If you wish to mount the unit differently please contact
your supplier.
Tightening
Due to vibrations during transit, lifting and handling all heat interface unit
connections
must be checked and tightened before installation.
Strainer
If a strainer is supplied with the heat interface unit it must be fitted
according to schematic diagram. Please note that the strainer may
be supplied loose.
Installation must comply with local standards and regulations.
Re-tightening
After filling the system with water and once it is in operation,
all union fittings must be re-tightened.
Commissioning
Before start-up check that:
• Pipes are connected in accordance with the symbols indicated on the
heat interface unit.
• Then slowly open the isolation valve(s) so that the heat interface unit
fills with water.
• Ensure that all union fittings and swivel nuts have been re-tightened.
• The heating circuit must be vented before commissioning.
• Monitor the heat interface unit’s operation in regard to temperature,
pressure, thermal expansion and leaks.
• Provided the heat interface unit functions in accordance with the
dimensioning regulations, it can be put into use.
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