AquaSnap® - Water-cooled liquid scroll chiller & water-sourced scroll heat pump 30WI
Short Description:
General description
- SCROLL hermetic compressors
- Chilled water evaporator with brazed plates
- Hot water condenser with brazed plates
- Electrical power and remote control cabinet:
- 400V-3ph-50Hz general electrical power supply (+10%/-10%) + earth
- Transformer fitted as standard on the machine for supplying the remote control circuit with 230V-1ph-50Hz
- 30WI electronic control module
European standards and directives compliance
- Machinery directive 2006/42/EC
- Electromagnetic compatibility directive 2004/108/EC
- EMC immunity and emissions EN 61800-3 ‘C3’
- Low voltage directive 2006/95/EC
- RoHS 2011/65/EU
- Pressure equipment directive (PED) 97/23/EC
- Machinery directive EN 60-204 -1
Main components
- Compressors
- Built-in electric motor cooled by intake gases
- Motor protected by internal winding thermostat
- Placed on anti-vibration mounts
- Evaporator and condenser
- Brazed plate exchanger.
- Stainless steel plates (AISI 316)
- Plate patterns optimized for high efficiency
- Armaflex thermal insulation on evaporator
- Refrigerating accessories
- Dehumidifier filters with rechargeable cartridges
- Hygroscopic sight glasses
- Solenoid valves on refrigerant lines (700 V to 1200 V models)
- Electronic expansion valves
- Control and safety instruments
- High and low pressure sensors
- High pressure safety valves
- Water temperature control sensors
- Evaporator frost protection sensor
- Factory-assembled evaporator water flow controller
- Electrical box
- Main safety switch with handle on front
- Control circuit transformer
- Circuit breaker for compressor motor
- Compressor motor switches
- Wire numbering
- Marking of the main electrical components
30WI Electronic control module
- Regulation of the chilled or hot water temperature
- Regulation of the water temperature based on the outdoor temperature (water law)
- Regulation for low temperature energy storage
- Second set-point management
- Complete management of compressors with start-up sequence, metering and runtime balancing
- Self-adjusting and proactive functions with adjustment of parameters on drift control
- In-series staged 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
- Operating and fault status diagnostics
- Management of a fault memory allowing a log of the last 20 incidents to be accessed, with operating readings taken when the fault occurs
- Lead/lag management of the two machines in parallel with runtime balancing and automatic changeover if a fault occurs on one machine
- Machine time schedule
- Display and access to the operating parameters via a multilingual LCD screen with 4 lines of 24 characters
Remote management
- Automatic operation control
- Set-point 1/set-point 2 selector
- Heating/cooling mode selector
- Set-point adjustable via 4-20 mA signal
- Compressor load shedding
- Water pump 1 and 2 control
- Fault reporting
