Accorroni HPE 018, Technical Manual

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4
1 SERIES
Water chillers and heat pumps of the series MPE are designed
for outdoor installation in both residential and commercial
applications.
The range uses R410a refrigerant, which assures high levels of
performance with relatively low energy consumption and fea-
tures 18 models in the chiller versionand 25 in heat pump veri-
sion, with cooling capacities ranging from 4 to 75 kW.
BEYOND CONVENTIONAL WORKING LIMITS
The finned block heat exchangers have been optimised for
R410a and use 8 mm copper pipes, which permit a better heat
exchange and quiet operation of the fans.
SELF - ADAPTIVE
The electronic control system allows the setpoint to be adjust-
ed automatically according to the outdoor temperature in order
to reduce consumption and broaden the working temperature
range.
The unit can also function in systems with a low water content,
even without the use of a storage reservoir, thanks to the auto-
matic adjustment which limits the number of compressor starts
and thus extends the life of the compressors themselves.
OFF
Tw
,in [°C]
t [s]
ON
15,5
15
14,5
14
13,5
13
12,5
12
11,5
ON ON
ON ON ON
OFF
420s
OFF OFF
600s
OFF
SMART DEFROST SYSTEM
The exclusive smart defrost system can correctly identify an im-
pairment of performance in the outdoor exchanger due to the
formation of ice and minimise the process time in relation to
normal operation of the unit.
Time Defrost start time
MAX
Ev
apor
ationing T
emper
atur
e
Variation