Galletti LCP 244 ML [5/20] Total heat recovery multi purpose heat pumps lcp
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Galletti LCP 244 ML [5/20] Total heat recovery multi purpose heat pumps lcp

Galletti LCP 244 ML [5/20] Total heat recovery multi purpose heat pumps lcp
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galletti.com VM66000387-01
Total heat recovery multi-purpose heat pumps LCP
The solution to the problem of defrosting
During the wintertime period, especially with temperatures ranging
between -3°C and +3°C, the high ambient relative humidity causes
the formation of water condensation around the exchanger fins.
Since the exchanger is at a lower temperature than the outdoor air,
the water in contact with it ends up hindering the heat exchange
necessary for the system to work correctly.
A defrost cycle is a temporary reversal of the thermodynamic cycle
which switches the unit into the summer mode and melts the ice
present between fins.
This phase is obviously problematic, since the cooling cycle warms
up the exchanger by drawing heat from the room that was previou-
sly being heated. The circuit that is defrosting will draw heat on the
user side (that is, not on the DHW side) if the unit is LCP M, and will
heat on the hot water user side if the unit is LCP P.
The LCP unit reduces this problem with the following technical
innovations:
The two thermodynamic circuits in the LCP M LCP P are com-
pletely independent and while one defrosts, the other circuit is
able to ensure continuity in the unit’s operation, with practically
no thermal discomfort for the user.
Hydrophilic coils are installed; these break down the drops of
water into particles and reduce the obstruction of the space
between one fin and another caused by ice build-up. Thanks to
a lower surface tension, the water tends to slide and precipitate
by gravity, preventing the formation of frost at low temperatures.
The software which manages the defrost cycle minimizes the
time it takes to complete it and only acts when it is really ne-
cessary. The fans are pushed to their maximum capacity at just
the right time, that is, when the ice is no longer stuck to the
fins, and mechanically ejects it from the heat exchanger.
Operating modes of the LCP M version
C1
C2
C1
C2
C1
C2
C1
C2
C1
C2
Simultaneous
Simultaneous
Separate defrosting
C1 C2
Cooling
Heating
Hot water production
(for sanitary use-DHW)
Cooling and hot water
production through total
recovery
Hot water production
(for example for sanitary use)
simultaneously with heating
In the “Chiller” mode the LCP M multifunctional unit chills water to
cool a room on the user side, dissipating the condensation heat in
air by means of a finned block condenser.
In the “Heat Pump” mode the LCP M unit heats the water in the con-
denser to provide heating on the user side, absorbing the evaporative
cooling capacity in air by means of a finned block heat exchanger.
In the “Production of High-temperature Hot Water for sanitary use
(DHW)” mode the LCP M multifunctional unit heats water in the
second condenser, absorbing the evaporative cooling capacity in
air by means of a finned block heat exchanger.
In the “Chiller + DHW” mode the LCP M multifunctional unit can
produce chilled water with the simultaneous production of high-tem-
perature hot water for sanitary use, thanks to total heat recovery.
In the “Simultaneous DHW Production and Heating” mode the LCP M
multifunctional unit heats water in parallel, optimally exploiting the
complete independence of its thermodynamic circuits.
Capacity is equally divided between the two circuits.

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