3.5 Connection to cooling/heating system (DX)
Connection of DX
coil
The DX coil integrated in the VEX unit must be connected in accordance with cur-
rent legislation and regulations for work on cooling and heating pumps, and the
work must only be carried out by trained personnel.
Installation errors will reduce coil performance and may lead to malfunction of the
unit.
NB:
Note the following:
● Execute the connection to the pipe system such that no stresses, linear ex-
pansion/expansive forces or vibrations are transferred to the coil's tube sys-
tem. These could damage the coil tubes.
● Ensure that the DX coil's tubular manifold is not weighed down by the self-
weight of the battery.
● Avoid excessive use of heat during pipe connection, as this could damage
soldered and welded joints.
3.5.1 Principles for connecting the DX coil
Simplified diagram
Simplified diagram for connecting the VEX unit's integrated DX coil as evaporator
and condenser:
3.5.2 Soldering the pipes
NB:
When soldering connection pipes inside the VEX unit, the coil and internal surfa-
ces must be protected/shielded.
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Mechanical installation
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Summary of Contents for VEX300 Series
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