AL-KO AT4F Series, Operating And Assembly Instruction Manual

Page: 92 / 140

Translation of original operating instructions
92
AL-KO AT4F ATEX
6.2.3 Heat exchanger commissioning
WARNING
Risk of explosion due to impermissible components and electrostatic charging.
If inadmissible components are used for the ATEX version, the unit can be electrostatically
charged and result in an explosion.
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Check that the heat exchangers are integrated into the unit potential.
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Check that only components approved for the ATEX area have been used.
ATTENTION
During commissioning, observe chapter "5.9.4 Filling and venting" on page 73.
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Piping must be provided on-site.
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Check that the heat exchangers are integrated into the unit potential.
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Circulating pump must be dimensioned according to the technical data sheet. Depending on the version, the circu-
lation pump must be installed outside the ATEX area.
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Heat exchangers must be connected in the counterflow principle.
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In the case of two-part heat exchangers, their pipe or screw connections are to be retightened in the air handling
unit and tested for leak-tightness.
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Antifreeze concentration must correspond to the specifications on the technical data sheet.
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The pre flow is at the top or bottom, depending on the air direction.
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We recommend the use of the antifrogen N with a mixture of 25 – 35 %.
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During the pressure test, the entire installation must be checked for leakage.
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It is to be rinsed until no more residual particles and scale are flushed out.
6.2.3.1 Commissioning of circulating coil system CCS (recuperative energy recovery)
ETA EHA ETA SUP
Fig. 63 Schematic diagram of a circulating coil system
ATTENTION
When using high-performance circuit heat recovery systems, observe the manufacturer's op-
erating instructions.