Hydraulic Connections - Trane CXAO Installation Operation & Maintenance

10.2

Hydraulic connections

Preamble
The connecting pipes should be adequately supported
so as not to burden with their weight on the system.
The installation instructions included in the statements
to follow, represent a necessary condition for the validity
of the warranty.
Trane is at your disposal to examine any differing needs,
which still must be approved prior to the operation of the
unit.
It is necessary that the water fl ow to the group is
compatible with that of the evaporator. E 'also necessary
that the water fl ow is maintained constant during
operation
Dimensioning of the minimum water content and fl ow
To function properly, the unit needs a water content
suffi cient to avoid continuous changes of the cycle or
shutdown and restart the compressor too frequently
(refer to the contents in this manual) tab p.. Refer to
the chapter on data decici general. The content can be
reduced by the quantity declared 'contained in the piping
distribution system as regards the only air conditioning
system. Accumulations undersized reduce the useful life
of the unit design.
For proper operation of the unit, it is absolutely
necessary to ensure a constant fl ow rate to the unit,
particularly in the case of absence of accumulation, it
is recommended to install a bypass valve, manual or
automatic, correctly set at the start up of the unit.
WARNING!: it is recommended to mount on the
side water overfl ow valves to prevent dangerous
overpressure and / or water hammer.
Apparatus for adjusting the water circuit
Or monoblock centrifugal electric pump
Ensures the water fl ow rate needed to power the
evaporator shell and tube or plate.
Automatic fi lling unit
Ensures the maintenance of water pressure in the
system at least 1.5 bar automatically topping.
Safety valve
Undertakes to open atmosphere in the system if the
pressure exceeds 6 bar.
Expansion vessel
Compensates for small water hammer and volume
changes for different temperatures.
Shut-off valves
Provide to intercept the pump or other components for
maintenance.
RF-SVX003A-GB
Hydraulic connections
Non-return valves
Take measures to ensure the direction of fl ow rate of
water and also have the function of preventing the
propagation of heating at downstream of the plant when
its pump is switched off.
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