• 5 •
3,40
3,60
3,80
4,00
4,20
4,40
4,60
270
300
340
370
420
480
540
600
kW
ESEER
NEOSYS
Application Guide /NEOSYS-AGU-1801-E
Screw R134A units
Scroll R410A units
FEATURES AND BENEFITS
A high energy performance
By using R410A refrigerant associated with high ef
fi
ciency micro
channel coils and variable speed fans NEOSYS is contributing to
a very low energy consumption all year around with an average
energy ef
fi
ciency ratio (ESEER)* in cooling mode above 4.0.
NEOSYS Heat-pumps are also achieving very high performances
in cooling and heating mode (COP* up to 3.2).
Furthermore NEOSYS advanced control allows energy savings
all year around by using smart control functions:
- Low water system quantity to reduce the time to reach the set-
point.
- Dynamic defrost (patented) to limit the number of defrost cycles.
- Set-point reset based on outside air temperature to relax the
chilled water set-point.
*ESEER : European Seasonal Energy Ef
fi
ciency Ratio in cooling mode.
COP : Coef
fi
cient of Performance in heating mode.
R410A Micro channel heat exchanger
With the use of fully
aluminium coils already
used in the automotive
industry, NEOSYS offers
many customer bene
fi
ts:
- Up to 40% less refrigerant
charge that contributes to
reduce the total amount
of refrigerant used in the
system.
- A more ef
fi
cient system
(EER + 10%).
- An air heat exchanger
with signi
fi
cantly impro-
ved corrosion resistance
results (x 2) from the
same aluminium alloy (no galvanic action) vs. the traditional
copper tube/aluminium
fi
n coils. By using this type of coil, units
can be used in light corrosive or seacoast environments without
any need for additional, and expensive, pre-treated
fi
ns or coil
coating.
- High mechanical resistance eases the cleaning with high pressure
air or water washers without any risk of damaging the
fi
ns.
Available in cooling only version, this technology will surely be
enlarged shortly to reversible applications.
Floating high pressure
LENNOX optimizes the performance of the NEOSYS chillers with
electronic expansion valve (as an option) and variable speed
ventilation (as standard) to achieve maximum energy savings.
We de
fi
ne a condensation temperature depending on the outside
air temperature at an optimum value to obtain the lowest power
inputs of couples, compressors and condenser fan motors.
