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3.9. Second consumer circuit
The standard Compact-Line units have a 3 bar pump, which is designed for the nominal
volumetric flow of the respective unit. If several consumers with different water specifications are
to be cooled with one unit, the unit can also be supplied with an optional second cold water
circuit. Ask your KKT chillers contact.
3.10. Additional evaporator pump
The evaporator is optimised for the nominal volumetric flow rate of cold water. The nominal
volumetric flow rate is given in Table 3 Technical data.
If the operating volumetric flow rate of the cold water is more than 50 % smaller, an evaporation
pump must be installed. The evaporator pump circulates the cold water internally and keeps the
storage water at feed temperature. A second pump supplies the process circuit with cold water.
3.11. Automatic water feed
Any leaks and evaporation can cause the quantity of cold water available for the chiller function to
reduce during the course of operation of the chiller. The Automatic water feed option provides the
possibility of topping up the cold water circuit automatically. The tank contents are monitored
continuously and if necessary topped up until it has again reached the optimum level. In this case
the operator only has to connect the chiller to the building's water system via the feed connection
(see Figure 5). The inlet pressure must lie between 1 bar and 10 bar.
Figure 5: Top-up connection
If you operate your chiller with a mixture of water / glycol and top up only with pure water, you
must check the glycol content of the circuit water at regular intervals and if necessary adjust it.
3.12. Water circuit in non-ferrous metal-free version
If your machine is a non-ferrous metal-free version, all parts of the chiller's cold water circuit in
contact with the media are free from non-ferrous metals. Certain components such as the
evaporator and pump are suitably modified. The materials used in the water circuit are listed in
Table 6.
3.13. DI package
The DI package contains the non-ferrous metal-free option for the water circuit (see chapter,
3.12) and a replaceable DI cartridge with conductivity monitoring and control.
3.14. Special voltage
The special voltage option describes the use of the aggregate outside the voltage supply of 400V
(±10%)/3phases/50Hz. Here alternative components (e.g. compressors, pumps or fans) as well
as an autotransformer (integrated or unattached) can be used.
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