LCP
RG66006889-Rev.01
24
Proactive action of an Electronic Expansion Valve:
In the event of a compressor on/off request:
The electronic driver pre-positions the valve at a point very near the final equilibrium point
A status of equilibrium is quickly reached with small adjustments
The electronic expansion valve becomes an active, rather than passive, component within
the system
The transient time is greatly reduced
Overall the system is more efficient, with higher EERs and therefore greater savings
7.6
STOPPING THE UNIT
The unit can be stopped by pressing the "OFF" button on the front panel, by turning off the main switch,
or via the specific commands on the LCD user interface.
Warning: you should avoid stopping the unit using the main switch. The latter device
should be used to disconnect the unit from the electricity supply when there is no
passage of current, i.e. when the unit is already turned OFF.
Moreover, if you completely disconnect the unit from the electricity supply, the crankcase
heating elements will receive no power, thereby jeopardising the integrity of the
compressor the next time the unit is started.
8 OPERATING
LIMITS
Operating limits of LCP chillers in relation to the outlet water temperature (in brackets, in cooling mode)
and outdoor air temperature:
Min.
Max.
Evaporator outlet water temperature [°C]:
5 (30)
12 (45)
External air temperature [°C]:
-10
45
Maximum temperature of Domestic How Water [°C]
50
8.1
WATER FLOW TO EVAPORATOR
The nominal flow rate is based on a temperature differential of 5° C between inlet and outlet water, in
relation to the cooling capacity provided at the nominal water (12/7 °C) and air (35°C) temperatures.
The maximum allowed flow rate is associated with a temperature differential of 3 °C. Higher flow rates,
though admissible, cause pointless, high drops in pressure.
The minimum allowed flow rate is associated with a temperature differential of 8 °C or a minimum
pressure drop of 10 kPa: lower flow rates cause a reduction in heat exchange coefficients and
excessively low evaporation temperatures, which may trigger the safety devices and cause the unit to
stop.
