MAXA bi-32V5C MIDI 0128, Технический бюллетень

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i-32V5C MIDI
Inverter Air/Water chillers with axial fan
9
Fan silent mode
Digital input that can be activated by an external contact that allows the reduction of the sound power level by acting on the ventilation. The
mode is particularly suitable during night operation. The decreases in capacity and sound power level when the "fan silent mode" function is
active are shown below.
The reduction refers to the test condition (1) of the technical data tables; the value is determined on the basis of measurements carried out in
accordance with UNI EN ISO 9614-2, in compliance with the requirements of Eurovent certification.
Model i-32V5C Midi Yeld reduction factor [-] A35W7 Sound power level reduction [dB(A)]
0121 0,982 -1
0126 0,977 -1,5
0128 0,973 -1,5
0132 0,973 -1,5
2.3.2 Factory-fitted optional accessories
Microchannel battery with Aero surface treatment
The treatment consists in the application by spraying of a special water-based paint made of new resins with very high chemical resistance. The
product is flexible to resist thermal contraction and expansion, UV resistant, dirt repellent, mechanically resistant, with very low heat transmis-
sion losses and practically no effect on air-side pressure drops.
The treatment withstands 6000 h according to ASTM B117.
Finned coil protection grids
metal grid to prevent the intrusion of foreign bodies inside the coil and to protect the coil from accidental contact with things or people.
KA1
Heat exchanger adhesive resistor - electrical resistor located on the front face of the plate heat exchanger, which is activated when the tempera-
ture of the water inside the exchanger drops below +4°C. For BT units, this value must be set according to the percentage of glycol in the system
and the freezing point of the mixture.
GI - Plant management module
allows the management of the following functions:
• Compressor ON/OFF signalling
• General alarm signalling/Machine block signalling
Three-phase relay for sequence/shortage moni min/max voltage detection
signals if all three phases are present in the correct sequence and if all three phase-to-phase voltages are within the set limits. The maximum and
minimum voltage thresholds can be set separately.
General circuit breaker
Overcurrent circuit breaker applied upstream of electrical components, protects components from failures caused by current peaks.
2.3.3 Standard components supplied separately/activatable after delivery
Digital input for doubleset-point
input allowing set-point changes.
Minimum Hz function
Activating this function by the procedure described in the controller manual, the unit will reduce the absorbed power by about 10% compared
to the nominal reference value; there will therefore also be a reduction in capacity of the unit.
2.3.4 Optional accessories supplied separately/activatable after delivery
Y-filter
contains a stainless steel mesh sieve (500 μm filtration) that collects solids in the water. Filtration prevents clogging and/or
damage to devices installed downstream of the filter.
System storage remote probe
system temperature probe to be positioned inside an external tank. The system remote probe thermoregulates the heat pump only during the
compressor start-up phase; shutdown is managed by the probe on the unit's delivery side.
Rubber vibrations dampers
are designed to prevent the transmission of vibrations to the structure; they are mounted underneath the unit in special
holes.
The optimum recommended load capacities are given below, depending on the size of the machine.