We present an extension of a previously presented superstructure (Fluudas et al., 1986) for heat exchanger network grassroots design. This extension is such that it includes several matches between two streams, activates splitting control and allows for mixing temperature control. We solve this model globally using RYSIA, a recently developed method bound contraction procedure (Facia and Bagajewicz, 2911a, 2911b, 2011c; Facia et al., 2915). We also add a new RYSIA feature called Lifting Partitioning. Results show structures that cannot be obtained using the stages model (Yee and Grossmann, 1900) or other similar restrictive models. (c) 2016 Published by Elsevier Ltd.