Chiller of VS series. Model VS-485/2

TECHNICAL CHARACTERISTICS OF THE VATBUZ CHILLER VS-485/2

General information
Cooling capacity	kW	234.0
Power consumption	kW	110.4 (2х55.2)
Heat transfer medium inlet temperature	0С	-11
Coolant outlet temperature	0С	-15
Energy efficiency COP	–	2.12
Refrigerant type	–	R449a
Power supply	В	380 V/3 phase/50 Hz
Dimensions of the chiller	mm	1 550 x 4 400 x 1 855
Chiller weight	kg	2 610
Compressor unit
Compressor type	–	Semi-hermetic two-screw
Manufacturer	–	Bitzer Bitzer HSN 7471-75
Rated compressor capacity	hp	90
Number of compressors	pcs.	2
Type of performance management	–	Stepless
Adjustment range	–	25% – 100%
Capacitor
Type of capacitor	–	Shell and tube
Refrigerant condensation temperature	0С	20÷50
Cooling method	–	Water
Cooling water temperature	0С	10÷40
Number of capacitors	pcs.	2
Water flow through the condenser	m3/h	Up to 100
Estimated pollution coefficient	m2K/W	0.000086
Evaporator
Evaporator type	–	Shell and tube
Pipe material	–	Copper-nickel alloy 90/10
Body material	–	Stainless steel AISI 316L
Coolant	–	Salt solution 30% (CaCI2)
Coolant consumption	m3/h	up to 100
Estimated pollution coefficient	m2K/W	0.000086
Number of evaporators	pcs.	1
Number of contours	pcs.	2
Thermal insulation thickness	mm.	19
Electronic expansion valve
Type		Carel E4V95
Quantity.	pcs.	2
Refrigerant		R449a
Water supply regulator for the condenser
Type		Belimo H664N
Reason.		SR24A-SR-TPC
Quantity.	pcs.	2
Chiller protection system functions
Flow switch, electronic expansion valve backup battery, motor protection, voltage and phase control relays, gas release safety valve, oil cooler control, evaporator freeze protection, condenser refrigerant condensation pressure and temperature control

FEATURES AND ADVANTAGES OF THE VATBUZ VS-485/2 CHILLER

• Testing before shipment.
• Filling with R449a refrigerant.
• The warranty is 2 years.
• Welded steel frame with NPU for high rigidity.
• The steel frame is additionally protected by polyester paint (RAL 7032).
• Large water-cooled condensers with reinforced copper tubes.
• Electrical panel with contactors and thermal overload protection that comply with EN60204/1 standards.
• STARTING WITH PARTIAL WINDING: Starting the compressor with a low starting current.
• Electronic expansion valves with PID control.
• Reliable semi-hermetic twin-screw compressors.
• Compressor discharge and suction valves.
• Additional separators for efficient oil separation.
• Check valve and oil shut-off valve for easy maintenance.
• Oil level monitoring.
• Thermistor protection of the compressor motor and gas emission protection.
• Thermally insulated double-circuit shell-and-tube evaporator optimized for R449a.
• Infinitely variable capacity control (25% – 100%).
• ECONOMIZER: A scheme for high efficiency and a wide operating range.
• Single-point power connection with main interlocking switch.
• High performance replaceable core dehumidifiers.
• Sight glass of the liquid line.
• Discharge and suction pressure sensors.
• High-pressure safety switches.
• Multilingual digital control panel Carel pCO with microprocessor control.
• Relay for phase control and rotation detection.
• Backup battery for EEV.
• Event registration.
• Programmable time range control (day and week).
• Evaporator flow switch.
• Protection against freezing.
• Electric heaters on the evaporators to protect against freezing during downtime.
• High and low pressure sensors.
• Remote switching on/off of digital inputs.
• Alarm output.

Equipment catalog

Technical documentation