Installation Instructions, General - Danfoss VX Solo II Series Instructions For Installation And Use Manual

Instructions for installation and use VX Solo II substations

9.0 Installation instructions, general

The installation, connection and maintenance of the substation must
be performed by qualified and authorised personnel.
Installation must always be performed in accordance with the ap-
plicable legislation and in compliance with these instructions.
The substation must be installed so that it is freely accessible and can
be maintained without unnecessary disruption. Lift the substation
by its mounting plate and secure it to a solid wall using 2 expansion
bolts or the like positioned in the two keyholes in the mounting plate.
We recommend positioning of rubber spacers between the wall
and the unit to prevent the transfer of resonance noise from the
pump into the wall.
Before commissioning, rinse all the pipes in the household piping
system thoroughly to remove any impurities, and check and clean
the dirt strainers in the substation.
Connect the substation to the household piping in accordance with
the labelling at the bottom and/or in accordance with the instruc-
tions in this manual.
Test and connections
Before filling the system with water, retighten all the pipe connections
because vibrations and shocks during transport and handling may
have caused leaks. Once the system has been filled with water, tighten
all the pipe connections once more before performing pressure test
for leaks. After heating of the system, check all the connections and
retighten if necessary.
Please note that the connections feature EPDM rubber gaskets!
Therefore, it is important that you DO NOT OVERTIGHTEN the union
nuts. Over-tightening may result in leaks. Leaks caused by over-
tightening or failure to retighten connections are not covered by
the warranty.
Variable connections possibilities
The substations offer variable connection possibilities, as connec-
tion of pipes can be established in the top or in the bottom of the
substation. Upon delivery the substation is prepared for connection
in bottom of the substation.
For change of connection from bottom to top, demount plugs on
connection pipes in top of substation and ball valves on connection
pipes in bottom of substation, and mount plugs in connection pipes
in bottom of substation and ball valves on connection pipes in top
of substation.
Please note that the air screw, which originally is mounted on the
heating supply pipe in top of substation must be relocated to the
highest point of the substation.
PLEASE NOTE that the variable connection possibilities makes it
possible to establish some of the connections in the top and others
in the bottom of the substation. This may be desirable in some cases.
Safety valve
Always lead the blow-off pipes from the safety valves to a
drain in accordance with applicable legislation.
Expansion vessel
The VX Solo II substations are equipped with an expansion vessel,
which is factory set to 0,5 bar.
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Danfoss District Energy VI.GP.P2.02 DKDHR