Air Conditioning Machines Incorporating A Refrigerating Unit And A Valve For Reversal Of The Cooling-heat Cycle "reversible Heat Pumps" (excl. Of A Kind Used For Persons In Motor Vehicles And Self-contained Or "split-system" Window Or Wall Air Conditioning Machines)
Air Conditioning Machines Incorporating A Refrigerating Unit And A Valve For Reversal Of The Cooling-heat Cycle "reversible Heat Pumps"