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Particular attention must be given to cases where an environment that is not particularly aggressive becomes
aggressive as a consequence of a local and/or temporal concomitant cause such as, for example, due to the
presence of a heating flue outlet or an industrial kitchen or a solvent extraction fan in a small craft business.
Protective treatment of the exchanger is strongly recommended if at least one of the points below is verified:
•
there are obvious signs of corrosion of the exposed metal surfaces in the installation area
•
the distance from the coast is less than 20 km
•
the prevailing winds come from the sea towards the unit
•
the environment is industrial with a significant concentration of pollutants
•
the environment is urban with a high population density
•
the environment is rural with the presence of organic discharges and effluents.
FW
Water filter
To protect the elements of the hydraulic circuit (in particular, the exchangers), there are Y filters that can stop
and settle the particles that are normally present in the water flow and would otherwise settle in the more
delicate parts of the hydraulic circuit and damage its heat exchange capacity.
Installation of the water filter is mandatory even when it is not supplied as an accessory.
Accessory supplied separately with the unit.
GABB Packaging in wooden crate
The unit is protected by a made-to-measure wooden crate. The accessory is mandatory if shipping by contain-
er is required
MCHE E-coated microchannel coil
The e-coated microchannel coils are treated by immersion of the whole exchanger in an emulsion of organic
resins, solvents, ionic stabilisers and deionised water. This is all subjected to a suitable electric field that causes
the formation of a solid, uniform deposit on the exchanger. The function of this deposit will be to protect the
aluminium from corrosion without penalising its thermophysical properties.
The choice of whether or not to treat the exchanger should be made in relation to the environment in which the
unit is to be installed and through observation of other structures and machinery with exposed metal surfaces
present in the destination environment.
The cross observation criterion is the most valid method of selection currently available without having to carry
out preliminary tests or measurements with instruments. The identified reference environments are:
•
marine coastal
•
industrial
•
urban with a high housing density
•
rural
Please note that in cases where different conditions co-exist, even for short periods, the choice must be suit-
able for preserving the exchanger in the harsher environmental conditions and not in conditions between the
worst and best situation.
Particular attention must be given to cases where an environment that is not particularly aggressive becomes
aggressive as a consequence of a local and/or temporal concomitant cause such as, for example, due to the
presence of a heating flue outlet or an industrial kitchen or a solvent extraction fan in a small craft business.
Protective treatment of the exchanger is strongly recommended if at least one of the points below is verified:
•
there are obvious signs of corrosion of the exposed metal surfaces in the installation area
•
the prevailing winds come from the sea towards the unit
•
the environment is industrial with a significant concentration of pollutants
•
the environment is urban with a high population density
•
the environment is rural with the presence of organic discharges and effluents.
For installations within a kilometre of the coast, the use of Cu/Al coils with anti-corrosion treatment is strongly
recommended.