PACKAGED ROOFTOP UNITS
Energy saving / recovery options
Free-cooling management The operation of the unit in free-cooling allows the outdoor air conditions to be taken advantage of when these are more favourable than those of the return (or ambient) air. As such, this allows the cooling capacity to be reduced under these circumstances. Note: the free-cooling function is not compatible with the activation of the recovery circuit. The percentage of air refreshing will range from 0% to 100%. There are three options for the free-cooling management: - Thermal, with comparison of temperatures. - Enthalpic, with comparison of enthalpies. - Thermoenthalpic, with comparison of enthalpies and a correction for temperature.
Active recovery Circuit dedicated to recovery, with independent control, adapted to the air refreshing requirements in order to raise the COP and EER of the unit set. - Centrifugal fan or electronic plug-fan in top box MRC0 or MRC1. - Air circuit comprised of coils with copper pipes and aluminium fins. - Thermostatic expansion valve with external equalisation. - Hermetic scroll-type compressor with sound insulation, assembled over antivibration mounts. - Crankcase heater. - Four-way cycle reversing valve (heat pump units). - Anti-acid dehydrator filter. - Condensates drain pan.
reversible recovery circuit outlet
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Safety options - Soft starter of the supply and/or return centrifugal fans (optionals) which prolongs the set time mainly aimed at installations with cloth ducts. Compulsory for motors with an output of 15 kW and above. - Differential pressostat for the detection of clogged filters. - Differential pressostat for control of air flow, with centrifugal fan (optional). - Smoke detecting station in accordance with the NF S 61-961 standard. - Refrigerant leak detector. This allows prompt identification of gas leaks, guaranteeing the safety of any people in the vicinity. Installation of the device ensures compliance with European standards F-GAS and EN378 as well as ASHRAE 15.