EDM SYSCREW AIR EVO HSE

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SYSCREW 380-1260 AIR EVO HSE
3
General
The new range has been designed and optimized to oper-
ate either with R513A and R134a refrigerants. Each unit
consists of two independent refrigerant circuits with a
hybrid combination of one inverter driven variable speed
screwcompressorandonexedspeedscrewcompressor.
Purecounter-owshellandtubedirectexpansionevapora-
tor is equipped with double refrigerant circuit and common
hydraulic circuit. The modular condensing section is made
with long life aluminium alloy micro-channel coils, and a
new optimized fan deck. All the units are equipped with
electronic expansion valves, one for each circuit. The units
are available in 12 sizes, with a nominal capacity range
from 360 to 1240 kW.
Twoacousticoptionsareavailable:
Standard: The units are equipped with electronically
commutated (EC) fan motors, providing quiet acoustic
performances and stepless speed control, and a metallic
compressors box further reducing the noise emission.
Super Low Noise (S):Theunitsareequippedwithelec-
tronically commutated (EC) fan motors operating at re-
duced nominal speed, additional air diffuser further im-
proving acoustic performances in both full and part load
operation. Compressor box is equipped with additional
acoustic insulation and exiblepipesaswellasmufers
on compressor discharge lines.
Toincreaseapplicationeld,threeadditionalversionsare
available:
High Temperature (HT): unitsare equippedwithventi-
lated compressor box, and more powerful electronically
commutated(EC)fanmotorstoensurehigherairow
rate and extend the operating map of the unit.
High Pressure Fans (HPF):unitsareequippedwithmore
powerful electronically commutated (EC) fan motors to
ensuresameairowrateasthestandardunitwithad-
ditional external static pressure up to 120 [Pa].
Brine Cooling (BC): same equipment as the basic CO
version, with customized refrigerant circuit and control
setting to extend operating envelope to negative water
set-point.
Twoheatrecoveryoptionsareavailable:
Desuperheater (D):platetypeheatexchangersttedon
the compressor discharge line, to recover about 20 % of
the total heat rejected to the condensers.
Total Heat Recovery (TR): double circuit shell & tubes
heat exchanger to recover the total heat rejected to the
condensers.4-wayvalvesandeldinstalledcontrolsen-
sor are also provided to ensure the cooling/heat recov-
ery mode changeover.
Cabinet and structure
The cabinet is made of heavy gauge galvanized steel. All
galvanized steel components are individually painted by a
special painting process before the assembly of the unit.
This painting system performs a homogeneous protec-
tion to the corrosion. The painting is a polyester powder
based type, colored in RAL 7040. The units are suitable for
outdoor installation, directly on the building roof or at the
ground level. All parts of the structure are totally fastened
with stainless steel bolts and rivets.
Refrigerant circuits
All the units are composed of two independent and sepa-
rate refrigerant circuits. Each refrigerant circuit is equipped
with discharge line shut-offvalves, lter-drier with solid
core, sight glass and electronic expansion valve. Some
units are equipped with economizer circuit (ECO) to im-
provecoolingcapacityand efciency.Thefunctionaldia-
gram of each circuit is shown in the section “Refrigerant
owdiagram”.
Specications
SY SCREW
AIR
S
SIZE
CO
TR
BC
(STD)*
HT
HPF
EVO HSE
(STD)*
CO = Cooling Only; BC = Brine Cooling; TR = Totaly Heat Recovery; Version
HT = High Temperature; HPF = High Pressure Fans; Version S = Super Low
Noise (version S not available for HT and HPF).
* (STD) = standard, not included in the product designation