Split refrigeration units and heat pumps
AIRDUO SK/CK - SK/CP
Assemblies with mixing box for air renewal and free-cooling: • 2 motorised dampers: * MS assembly: outdoor air intake. • 3 motorised dampers: * MC assembly: outdoor air intake, air extraction and centrifugal return (models 90 to 180 and 420 to 600) or plug-fan (models 420 to 600 with MC0 assembly). Note: Plug-fan in models 420 to 600 with MC0 assembly: upon request.
All the possible combinations of “Asemmblies with mixing boxes” are represented on the following page.
On units with mixing box, the free-cooling can be managed by the electronic control. This function 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. The percentage of air renewal 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.
CK 90 to 360 MS
CK 90 to 180 MC
CK 420 to 600 MS
CK 420 to 600 MC0
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CK 420 to 600 MC1
Note: With enthalpic or thermoenthalpic free-cooling change to the CIATrtc electronic control is obligatory
Soft starter of the supply and/or return centrifugal fans 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. Smoke detecting station in accordance with the NF S 61-961 standard. Refrigerant leak detector (with CIATrtc control). 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.
HEAT PUMPS - AIR CONDITIONING - REFRIGERATION - AIR HANDLING - HEAT EXCHANGE - NA 17.01 A