9
DESHU - October 2015
Technical instructions
for Installation
C.
Storage
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It is recommended to inspect regularly the unit during storage.
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Some components require certain precautions in case of prolonged storage (more than 6 months). For
instance, electric motors and fans shall be rotated manually to prevent stuck bearings.
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Do not store the equipment at temperatures above 60°C.
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The unit must be stored in a safe place to avoid intentional or accidental damage.
D.
Installation
The installation area or the feet must be levelled and sturdy enough to bear the weight of the unit.
The
installation area must be horizontal.
A tolerance of plus or minus 1 % is allowed to avoid water accumulation in the condensate drain pans and to
ensure a correct compressors lubrication.
If the installation support is not fl at,
use shims to level the unit
(doors should close properly).
Provide 2 m clearance in front of the exchanger and 1 m clearance around the unit
to facilitate servicing and
maintenance.
E.
Hydraulic connections
1/
Water pipes
Concerning chilled water or hot water auxiliary coil, respect pipelines inlets and outlets and lag the pipes.
To ensure satisfactory operation of the piping network outside of the unit, we recommend the following
equipment:
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Demountable fi ttings
to facilitate circuit disassembly.
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Filters
prevent foreign matter from entering the circuits and protect the valves or the pump.
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Thermometers
allow water inlet and outlet temperatures monitoring.
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Stop valves
to isolate a circuit for maintenance operations.
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Pressure gauges
to display water inlet and outlet pressures and to check water fl ow rate. Stop valves
must be installed between the pressure gauges and the circuits.
If the unit is exposed to temperatures below 0°C, install electric heaters on all water pipes subject to frost.
Install drain valves at the lowest points and air vents (manual or automatic) at the highest points of the piping.
Nota:
Do not leave water in the exchangers during installation if the equipment is exposed to frost.
Otherwise, the guarantee on the exchangers will be void.
2/
Water condenser(s) piping
Pipe end is plain if the optional isolation valve has not been selected.
Piping supplied by ETT is made of CPVC, refer to the drawings for more information.
Water condensers are made of 316L stainless steel as standard, suitable for chlorine water treatment only. For
other treatments, request titanium condensers.
