Rev. F 01-2022
13
MTEC.5811.GB-F-1 Operation and maintenance manual HHA series English
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reset, low pressure switch with automatic reset, high pressure safety valve, compressor thermal overload protection, fans thermal overload
protection.
3.1.10 Test
All the units are fully assembled and wired at the factory, carefully evacuated and dried after leak tests under pressure and then charged
with refrigerant R410A. They are all fully operational tested before shipment. They all conforms to European Directives and are individually
marked with the CE label and provided with Conformity Declaration.
3.2 Accessories description
3.2.1
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This interface card enables the controller to comunicate with other devices using Modbus protocol.
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This version includes the complete acoustic insulation of the unit (comp heat exchangers vanes) with compressor jackets
and insulating material made with high density media and the interposition of heavy bitumen layer.
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This panel can be mounted up to 50m (maximum) from the unit and replicates all of the control functions. It is connected using a twin cable
of 0.5 mm sq section.
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Built-in Electronic temperature and humidity probe.
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The supply fan is a high performance centrifugal type, double inlet forward curved blades, directly coupled to the electric motor. The fan
wheel and the scroll are made from hot galvanised thick sheet metal, painted with polyurethane powders, to ensure the best resistance
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of the windings and the absence of power lost due to pulleys and belt transmission. The fan is statically and dynamically balanced class 6,3
according to ISO1940. The electric motor has a separate electronic commuter (driver) and a speed modulation 0-10V, integrated PFC, burn
out thermal protection (in case of considerable reduction of the power supply), protection degree IP54, serial interface card with modbus
protocol RTU.