references
DESCRIPTION
Compressors
- Hermetic SCROLL
OF THE MAIN COMPONENTS
- in-series stage capacity-reduction system on compressors based on cooling and heating demands - management of compressor short-cycle protection - management of the machine operation limit according to outdoor temperature - diagnosis of fault and operating statuses - management of a fault memory allowing a log of the last 20 incidents to be accessed, with operating readings taken when the fault occurs - master/slave management of the two machines in parallel with balancing of the running times and automatic changeover if a fault occurs on one machine - machine time schedule - pump standby based on demand - display and access to the operating parameters via a multilingual LCD screen with 4 lines of 24 characters
- built-in electric motor cooled by intake gases - motor protected by internal winding thermostat - placed on anti-vibration mounts
Evaporator
- brazed plate exchanger - stainless steel plates - plate patterns optimised for high-efficiency - armaflex thermal insulation
Condenser
- air-cooled exchanger, all-aluminium micro-channel coil - propeller fans with airfoil blades - IP 54, class F motors
Refrigerating accessories
- dehumidifier filters with rechargeable cartridges - hygroscopic sight glasses - electronic expansion valves
Remote control
CONNECT2 is equipped as standard with an RS485 serial port offering a range of remote management, monitoring and diagnostic options via the communication bus. Several contacts are available as standard, enabling the AQUACIATPOWER to be controlled remotely by wired link: - automatic operation control: when this contact is open, the machine stops - setpoint 1/setpoint 2 selector: when this contact is closed, a second cooling setpoint is activated (energy storage mode, for example) - setpoint adjustable via 4-20 mA signal: this input is used to adjust the setpoint in COOLING mode - compressor load shedding: closing the contact(s) concerned allows the power or refrigerating consumption of the machine to be limited by stopping one or more compressors - water pump 1 and 2 control: these outputs control the switches for one or two water pumps - fault reporting: this contact indicates the presence of a major fault which has caused one or both refrigerating circuits to stop
Control and safety instruments
- low and high pressure sensors - safety valves on refrigerating circuit - water temperature control sensors - evaporator antifreeze protection sensor - factory-assembled evaporator water flow controller
Electrics box
- IP 44 - 400V-3Ph-50 Hz power supply + earth (+10% / -10%) - main safety switch with handle on front - control circuit transformer - fan and compressor motor circuit breaker - fan and compressor motor contactors - CONNECT2 microprocessor-controlled electronic control module - wire numbering - marking of the main electrical components - RAL 7035
CONNECT2 electronic control module
Power control
In-series staged power control system on the compressors
Frame
Frame made from RAL 7024 and RAL 7035 painted panels The CIAT electronic control module performs the following main functions: - chilled water temperature control - regulation of the water temperature based on the outdoor temperature (water law) - regulation for low temperature energy storage - second setpoint management - complete management of compressors with start-up sequence, timer and operating time balancing - self-adjusting and proactive functions with adjustment of parameters on drift control
HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 17.01 A
119
AQUACIATPOWER HEE
1
High Efficiency water chillers