WT-V 100, 200, 300 and 750 have four connections while WT-V 500 and 1000 have six connections. WT-V 300, 500, 750 and 1000 can be connected to an immersion heater.
WT-V 500 FC, WT-V 750 FC and WT-V 1000 FC all feature connections on the front for easier transportation and installation. The boiler can easily be made narrower and easier to handle by removing the insulation.
3-bar and 6-bar variants make it possible to use the units in buildings where a higher working pressure is required. Moreover, both the 3-bar and 6-bar variants are available in a DN 80 version, with 4 DN 80 connections for applications where a larger flow is required.