The LZTi series of high efﬁciency heat pumps has been speciﬁcally designed for use with radiant ﬂoor heating systems or those applications where it is necessary to have maximum efﬁciency when heating. They have been optimized on heating mode, are able to produce water up to 65°C and can operate down to -20°C ambient temperature.
LZTi units are available in 2 or 4 pipe (SW6) versions. Both versions can produce domestic hot water, in the standard LZTi through the activation of an external 3-way-valve and in the SW6 version by means of a separate heat exchanger and hydraulic circuit for the domestic hot water.
All models are supplied as standard with a reversing valve for defrost and cold water production in summer.