Translation of original operating instructions
64
AL-KO AT4F ATEX
On-site siphon
ATTENTION
The drain pipe and the siphon are to be kept frost-proof on-site.
A siphon is also required on-site for the cooler and for the direct evaporator.
Each pan drain must be fitted with a separate siphon.
5.8.3 Connection of pumps/cold water/air cooler (option)
For additional cooling of the supply air, a pump cold water air cooler (PKW) can be used.
To avoid condensate transfer into the duct, a droplet eliminator (TA) is installed behind the cooler.
The supply and return lines of both heat exchangers must be professionally connected.
NOTE
Do not mix up the feed and return lines when connecting the pipelines.
The medium inlet is located on the air outlet side (Fig. 49 Counterflow principle for heat ex
-
changer connection).
WARNING
Risk of explosion due to impermissible components and due to electrostatic charging.
If inadmissible components are used for the ATEX version, the unit can be electrostatically
charged. This can lead to an explosion.
The heat exchanger used must be suitable for the required ATEX marking.
The valves and actuators optionally supplied by AL-KO THERM may only be installed out-
side the ATEX zone. Otherwise, valves and actuators approved for the ATEX zone must
be used.
Measures must be taken by the operator to ensure that a sufficient safety distance between
media temperature (e.g.: medium of the heat exchanger) and the minimum ignition tem-
perature of the potentially present explosive mixture in accordance with DIN EN 1127-1.
Integrate the heat exchanger into the equipotential bonding of the unit.
ATTENTION
Counter-hold using a suitable tool (e.g. pipe wrench) during connection of the heat exchang-
ers in order to avoid damage.
Install pipes and connections in such a way that the heat exchangers remain freely accessible
for maintenance.
Maximum working pressure: 16 bar
Maximum hot water flow temperature: 120 °C
Valves and actuators must be installed professionally. Please note here whether a version with a 2-way or 3-way
valve is to be implemented.
For the electrical connection of the actuators, see the circuit diagram.
Summary of Contents for AT4F Series
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