RG66001652_REV.02
6
LCW - LCR
LCRC versions with remote condenser
o
Occupies an extremely small surface area
o
No need to add glycol to the water in the user circuit
o
Possibility of installing condensers on floors with a low weight-bearing capacity,
which would not be able to support the weight of a complete machine
o
Simplified piping, since there is no need for vapour barrier insulation [cooling only
configuration]
o
Innovative aesthetics and total safety, given that the chillers are completely enclosed
o
Availability of a separate hydronic kit with the same styling as the chiller
o
NOTE
: for the units in question, it is mandatory to comply with the specifications of
97/23 PED, cited in the section "INSTALLATION"
LCW units are to be used within the operating limits stated in this manual; failure to comply with said
limits will invalidate the warranties provided in the contract of sale.
Cooling circuit
The entire cooling circuit is built in the manufacturer factory using only components of the finest quality
brands and processes conforming to the specifications of Directive 97/23 for brazing. The chillers are built
with a single cooling circuit using only components supplied by leading international manufacturers.
Compressors: only scroll-type compressors of leading international manufacturers are used in
the LCW units. The scroll compressor is presently the best solution in terms of reliability and
efficiency in the range of power up to 145 kW for each circuit and in terms of noise level.
NOTE
: the scroll compressor, like all hermetic compressors, is classified as a pressure vessel
according to the PED insofar as its low-pressure section is concerned, to which the PS
indicated on the rating plate refers.
Heat exchangers all chillers have heat exchangers with braze-welded AISI 304 austenitic
stainless steel plates and connections made of AISI 304 L, characterised by a reduced
carbon content to facilitate brazing. Braze-welded plate exchangers represent the state of the
art in terms of heat exchange efficiency and make it possible to significantly reduce the
refrigerant charge compared to traditional solutions. The high turbulence induced by the
internal corrugation of the plates combined with their perfectly smooth surface also helps
prevent dirt build-up and the formation of scale on the condenser side.
NOTE
: due to the
presence of heat insulation, the data plate is not legible as required under 97/23 PED.
However, the exchanger serial number and declaration of conformity are recorded during
production and constitute an integral part of GALLETTI S.p.A records.
Cooling components:
o
Molecular mesh activated-alumina filter dryer
o
Flow indicator with humidity indicator. Indications are provided directly on the sight
glass.
o
Thermostatic valve with external equalisation and integrated MOP function.
o
Reverse cycle valve (heat pump only)
o
Unidirectional valve (heat pump only)
o
High and low pressure switches
o
Schrader valves for checks and/or maintenance
o
Safety valve
Electric control board: The electric control board is constructed and wired in accordance with
Directives 73/23/EEC and 89/336/EEC and related standards. The board may be accessed
through a door after the main switch has been put off. All the remote controls use 24 V
signals powered by an insulating transformer situated on the electric control board. A T
control kit comprising a thermostat and an auxiliary fan is available on request. The protection
rating of the unit is IP 43.
NOTE
: the mechanical safety devices such as the high pressure
switch are of the kind that trigger directly; their efficiency will not be affected by any faults
occurring in the microprocessor control circuit. in compliance with 97/23 PED.
