Units which prepare domestic hot water.

Units with the refrigeration system containing R134a (GWP 1430) refrigerant.

Scroll compressor with an oil sight glass. Installed with internal overheating protection and, if required, with a crankcase heater, fitted on rubber vibration dampers.

The units in the heating-only version only serve to heat water or air. Their primary function is heating, while other functions are optional.

Plate heat exchanger made of AISI 316 stainless steel, soldered, with one cooling circuit and one water circuit or with two independent cooling circuits and one water circuit.