Rev. 3 02-2021
12
MTEC.DXi.H/DXi.HF.GB-3 Use and Maintenance technical manual DXi.H/DXi.HF English
Emibyte DXi.H/DXi.HF
Direct expansion close control
3. TECHNICAL CHARACTERISTICS
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Close control unit are designed and produced in compliance with 9001:2015 ISO norms for technological plants of conditioning, data center,
for UPS and all the ambients where are needed special conditions and a strictly control.
The units are suitable for internal installation. The units are built with the most advanced industry technology, including variable speed
compressors equipped with brushless permanent magnets (BLDC) and fans with electronic commutated motor (EC).
BLDC compressors are driven by an inverter with 0-10V signal sent by the controller; they are able to vary the load continuously and the
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gic 0-10V signal sent from the controller; thanks to technology used the fans ensure reduced absorption compared to traditional centrifugal
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All the models are provided with a BLDC hermetic compressor (with brushless permanents magnets motor) rotary or scroll type, suitable
for functioning with R410a refrigerant.
Each compressor is installed on a rubber-type vibration dampers and are equipped with:
• Oil carter, where the crankcase heater is installed (only Scroll);
• Thermistor included protection for the overloads;
• Polyester oil charge.
The compressor’s terminal board has IP54 protection. Starts and stops of compressors are directly managed by the unit controller which in
this way modulates the cooling capacity. For rotary type compressors an equalization pressure valve is provided.
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The modular structure of this equipment is made up of press-formed section in galvanized sheet elements painted with a RAL 9004 epoxy
powder cycle. The elements are assembled together to make up a sturdy frame, capable of supporting units parts and to sustain strain
which may derive from unit handling and operation. The devices are arranged inside the frame in a way that they are easy to reach from
the front, to make necessary handling during unit operation and easier and more safety maintenance.
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The electric motor is suitable to be used at a variable rotation speed managed usign the controller with 0-10V signal. The blades, with a
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commutated motor equipped with internal thermal protection.
For further details on controlling the EC fans (rate calibration and static counter-pressure) please refer to the Microprocessor’s Manual.
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avoiding the drain of condensate outside the drip tray. The drip tray is made up of painted and galvanized sheet or in peraluman (aluminium
and magnesium alloy). All the coils are factory tested and cleaned before their installation by the Manufacturer.
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The drip tray is made up of painted and galvanized sheet or in peraluman (aluminium and magnesium alloy).
All the coils are factory tested and cleaned before their installation by the Manufacturer.
