Aircooled chiller/Heat pump Blue Box TETRIS 178 kW
- Brand: Bluebox
- Power: 178 kW
- Year: 2013
- Article: 45/20
| Cooling capacity | 178 kW (12/7 — 35°C) |
| Heating capacity | 206 kW (40/45 — 7°C) |
| Year of manufacture | 2013 |
| Options | high-efficiency heat pump |
| Version | super low noise |
| Type of refrigerant | R410A |
| Refrigerant circuit | 2 pcs. |
| Compressors | 4 pcs. Copeland (scroll) |
| Number of fans | 8 pcs. |
| Dimensions | 4.58 х 2.30 х 2.40 m |
| Weight | 2960 kg |
| Working hours | 1755 (С1) - 1758 (С2)- 1704 (С3)- 1692 (С4) hrs |
| Condition | excellent (tested only) |
Strong points
►►Eurovent Class A Unit.
►► SLN unit with Night Shift function.
►► Integrated hydraulic modules also with an inertial tank.
►► Three types of pumps: standard, oversize, and for high percentages of glycol (e.g. up to 50%).
►►Availability of pumps with inverter on the utility side.
High energy efficiency compact air-cooled water chiller with hermetic scroll compressors, axial fans, and plate evaporators.R410A refrigerant fluid.
STRUCTURE
Holding frame module made of galvanized sheet metal and painted with polyester powders RAL 5017 / 7035 at 180°C, which guarantees very high resistance to atmospheric agents. Stainless steel bolts and screws.
COMPRESSORS
Hermetic orbiting scroll compressors, connected in parallel, equipped with oil sight glass, internal Klixon thermal circuit breaker, contactors, and oil-equalizing line.
CONDENSERS
In cooling only units consisting of aluminum microchannel coils, instead are aluminum-finned copper-tube multi-row coils in the heat pump units. Through continuous research in the field of metal alloys and
sophisticated production techniques, microchannel coils are made using specific aluminum alloys for the tubes and the fins. This drastically reduces the effects of galvanic corrosion, always guaranteeing the protection of pipes that contain the refrigerant. Tubes and fins are also subjected to processes of SilFLUX coating (or equivalent) or the addition of zinc to further increase the corrosion resistance.
Optional e-coated microchannel coils are available if the unit needs to be installed in environments with a particularly aggressive atmosphere. They are strongly recommended for use in coastal or highly industrialized areas. Using microchannel coils instead of those in copper/aluminum reduces the overall weight of the unit by approx. 10% and that of the refrigerant charge by a least 30%.
The layout of the ”V” coils makes the unit very compact and simultaneously guarantees an increase in the air intake area leaving ample space for the cooling and hydraulic circuit components to be set. To protect the exchangers from corrosion and to ensure the unit operates properly, follow the recommendations reported in the use, installation, and maintenance manual to clean the coils.
For installations within one kilometer from the coast, we strongly recommend using Cu/Al coils with an anti-corrosion treatment for cold-only units as well.
ELECTRIC FANS
Axial fans with sickle-shaped blades and conveyor, designed to optimize efficiency and reduce noise emission, directly coupled to the 6-pole 3-phase electric motor, with an internal Klixon thermal circuit-breaker. The protection degree of the motor is IP 54. The fan includes the accident-prevention protection grid.
EVAPORATOR
AISI 316 stainless steel braze-welded plate evaporator, insulated with a closed-cell insulating casing.
The models with 2 cooling circuits have a dual circuit exchanger with a single hydraulic connection.
Using dual circuit plate heat exchangers allows the following:
• Higher COP/EER values;
• Less refrigerant in the circuit;
• Smaller unit size and lighter weight;
• Easier maintenance.
The evaporator is equipped with a temperature probe for anti-freeze protection, with the flow switch and probe for the temperature control of the water returning from the system.
COOLING CIRCUIT
This includes shut-off cock in the liquid line, 5/16” load inlets, liquid indicator, dehydrator filter with the solid replaceable cartridge, and an electronic expansion valve. Pressure transducers to read
the high and low-pressure values and the relative evaporation and condensation temperatures, high-pressure switch, and safety valve values. The solenoid valve function on the liquid
line is implemented by the electronic expansion valve, which shuts off the liquid when it closes when the circuit stops. On request, the electronic valve can be equipped with a buffer coil that guarantees closure even in the case of a power cut.
ELECTRIC CONTROL BOARD
The board includes:
• main isolating switch
• automatic compressor circuit breakers with fixed calibration
• protection fuses of the fans and auxiliary circuits
• remote fan switches
• pump circuit breakers (if present)
• single potential-free contacts for compressors, fans and
pumps (if present)
• double set-point to be requested when placing the order,
specifying whether the change in the set is controlled via the
keyboard or a digital input
• RS485 serial port with Modbus protocol only summer/winter selection from digital input (only for /HP units)
• microprocessor to control the following functions:
–water temperature adjustment with inlet control
–anti-freeze protection
–compressor timing
–automatic rotation of compressor start-up sequence
–alarm signals
–alarms reset
–capacity control of the power dispensed by the unit
–cumulative alarm contact for remote signaling
–forced capacity control by pressure limit
–a recording of the alarm log with ”black box” function.
The display is used to display the following information:
–inlet water temperature
–set temperature and differentials
–a description of the alarms
–compressor operating hours counter
–counter of the number of start-ups of the unit and pumps (if present)
–high and low pressure and relative condensation and evaporation temperatures.
Standard electric power supply [V/f/Hz]: 400/3~/50 ±5%.
Super-silent unit
In addition to that provided for the Teal 2A, the unit also includes the compartment for soundproof compressors of the /LN option, the automatic speed regulator of the fans and the fan speed reduction so that at nominal operating conditions the airflow and therefore the noise is less than that in the basic version. However, the speed regulator allows rotation of the fans at maximum speed if the conditions of the outdoor air
temperature are particularly harsh. This allows the unit to have the same operating limits of Teal 2A+.
Teal 2A SLN can also be equipped with the Night Shift System
