D – 508 C – 07/02 D – EN pag. 3/36
Introduction
General description
Each unit is completely assembled, wired, evacuated, charged, tested, and ready for installation. The main
components are air-cooled condensers with integral sub-cooler sections, accessible semi-hermetic single-screw
compressors, shell-and-tube evaporators, shell-and-tube water heat recovery condensers (optional), oil
separators, complete refrigerant piping and electrical panel (including control and power sections). Liquid line
components are shut-off valves, charging valves, filter-dryers, sight-glass/moisture indicators, electronic expansion
valves, liquid receivers (only with total heat recovery option). Other features are compressor heaters, evaporator
heater for low ambient water freeze protection, automatic pump-down during circuit shutdown and fully integrated
microprocessor control system.
The chiller uses R407C refrigerant and operates at positive pressures.
Purpose of the manual
The manual allows the installer and the operator to perform correctly all the required operations for unit installation
and maintenance without causing any damage to the chiller or injuries to qualified personnel.
Nomenclature
EWA P 600 AJ YN N **** /A
Machine type
ERA: Air-cooled condensing unit
EWW: Water-cooled packaged water chiller
EWL: Remote condenser water chiller
EWA: Air-cooled chiller, cooling only
EWY: Air-cooled chiller, heatpump
EWC: Air-cooled chiller, cooling only with centrifugal fan
EWT: Air-cooled chiller, cooling only with heat recovery
Refrigerant
D: R-134a
P: R-407C
Q: R-410A
Capacity class in kW (cooling)
Always 3-digit code
Cap < 50 kW: not rounded: example: 37 kW => 037
50 < Cap < 999 kW: rounded 0/5: 536 kW => 535
Cap > 999 kW use C symbol (C=100): example: 2578 kW => C26
Model series
first character : letter A, B,…: major modification
second character : letter A,B,... : minor modification DENV
letter J-W… : minor modification New Series
Voltage
V1: ~ / 220 - 240 V / 50 Hz
V3: 1~ / 230 V / 50 Hz
T1: 3~ / 230 V / 50 Hz
W1: 3N~ / 400 V / 50 Hz
Y1: 3~ / 380-415 V / 50 Hz
YN: 3~ / 400 V / 50 Hz
Hydraulic module/Heat recovery version/
Pump & electrical options (Consult Selection software)
N: No Hydraulic components
M: Modular
A-V: Combination of specific options
Option code (Consult Selection software)
****: 4 digits
Option regarding efficiency version, sound version
/H: High ambient version
/A: High efficiency version
/Q: Extra low noise version
/Z: High efficiency and Extra low noise version
