Tender Specification VLS / VLH / VLC 604-1204 Tender Specification SERIES: VLS / VLH / VLC 604-1204 TYPE: Air cooled water chiller, heat pump and condensing unit TECHNOLOGY: multi-scroll compressors, R410A refrigerant CAPACITY RANGE: Cool ing 153-307 [kW] Heating 170-337 [kW]
Tender Specification VLS / VLH / VLC 604-1204 1 General description VLS / VLH / VLC units have been designed and optimized to operate with R410A refrigerant and scroll compressors Thanks to multi-scroll technology and asymmetric design in tandem combination, it is possible to reach very high level of seasonal performances (ESEER up to 4,1), in line with Ecodesign requirements VLS units are available in 7 sizes, with a nominal capacity range from 153 to 307 [kW] VLH units are available in 7 sizes, with a no
Tender Specification VLS / VLH / VLC 604-1204 fan deck sound emission, the chillers are supplied with compressors box to reduce the noise emissions • Extra Low Noise (ELN): the units are equipped with star connected fans, fitted with a speed controller which allows the units to operate with a very low rotation speed.
Tender Specification VLS / VLH / VLC 604-1204 Several hydraulic options are available in order to cover a wide range of requirements in terms of pump available static pressure, redundancy and inertia water side The general operation status of the unit is steadily managed by a microprocessor implementing a dedicated developed software, ensuring a total protection of compressor inside its operating envelope and including parameter customization according application field
Tender Specification VLS / VLH / VLC 604-1204 2 Key points • High seasonal performances ESEER up to 4.
Tender Specification VLS / VLH / VLC 604-1204 3 Cabinet 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 protection to the corrosion. The painting is a polyester powder based type, colored in RAL 7040.
Tender Specification VLS / VLH / VLC 604-1204 protection against freezing at low ambient temperature when the unit is switched off. Maximum working pressure is 10 [bar] water side and 45 [bar] refrigerant side 6 Condenser In Heat pump version (VLH), Condensing unit (VLC) and Total heat recovery unit (VLR), condenser coils are made of seamless copper tubes, arranged in staggered rows, mechanically expanded into corrugated aluminum fins.
Tender Specification VLS / VLH / VLC 604-1204 8 Refrigerant circuit All the units are equipped with two independent and separate refrigerant circuits. Each refrigerant circuit is equipped with liquid line and discharge line shut-off valves, filter-drier with solid core, sight glass and electronic expansion valve. Heat pump units (VLH) are additionally provided with 4-way reversing valves, suction accumulators and liquid receivers.
Tender Specification VLS / VLH / VLC 604-1204 Evaporator antifreeze protection Defrost management High and low pressure operating conditions management External interlocks management Remote control management o Unit power on / off o Unit cool / heat operation o Summary alarm signal • Remote signaling, by dry contacts: o Voltage presence o Compressors in operation o General alarm • Hydro-kit management: start-up of pump, antifreeze heater of external tank, pump anti-sticking function • Heat recovery managem
Tender Specification VLS / VLH / VLC 604-1204 • Refrigerant coil temperature • Heat recovery temperature Unit controller can display various alarms and operation status: • Low / High pressure • Evaporator antifreeze • Lack of water flow • Compressor operation / operating hours and start-up numbers • Pump operation / operating hours • Compressor thermal protection • Fan thermal protection • Faulty sensors 10 Safety and control devices Each unit is complete with the following safety and control devices Safe
Tender Specification VLS / VLH / VLC 604-1204 • Crankcase oil electric heater • Water differential pressure switch • Safety valve on discharge lines Control • • • • • • • • • High pressure transducers Low pressure transducers Discharge gas temperature probes Return water temperature sensor Leaving water temperature sensor (with an antifreeze function) Suction temperature sensor (for EEV control) Outdoor ambient temperature sensor Coil temperature sensors (VLH only) Heat recovery temperature sensor (VLR on
Tender Specification VLS / VLH / VLC 604-1204 components: • Single or double pump with low available static pressure (100 [kPa]) or high available static pressure (200 [kPa]) • Expansion tank (25 [l] for all models) • Check valves (in case of 2 pumps) • Safety valve • Automatic air vent valve • Thermal insulation for pipes and water pump(s) On board hydro kit with buffer tank are provided with following components: • Single or double pump with low available static pressure (100 [kPa]) or high available sta
Tender Specification VLS / VLH / VLC 604-1204 12 Factory installed options • • • • • • • • • • • • • • • • • ModBus protocol kit for BMS Lonwork protocol kit for BMS Bacnet protocol kit for BMS Compressors soft-starter Fan speed control for low ambient operation in cooling mode Double set point Power factor correction capacitors Compressor overload protection Automatic circuit breaker HP & LP gauges E-coating for Al/Cu coils Condenser coils with copper fins Chiller grilles Compressor jackets Desuperheater
Tender Specification VLS / VLH / VLC 604-1204 • • • • • • • • Remote keyboard panel Sequencer, up to max four units Master and slave control, up to max four units Anti-vibration spring Water flow switch Water pressure switch Water filter Remote hydro kits with buffer tank, 1 or 2 low or high pressure pump(s), relevant accessories, with or without antifreeze heater 14 Conformity with standards The units are in conformity with the following standards: • Machine Directive: 2006/42/EC • Electromagnetic Compa
